First BanCorp. (FBP) 10-K 2 Mar 20 2019 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 14, 2020	Jun. 30, 2019
Cover [Abstract]
Entity Registrant Name	FIRST BANCORP.
Entity Central Index Key	0001057706
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock Shares Outstanding		217,358,625
Entity Emerging Growth Company	false
Entity Small Business	false
Trading Symbol	FBP
Entity Current Reporting Status	Yes
Entity Shell Company	false
Document Transition Report	false
Entity File Number	001-14793
Entity Tax Identification Number	66-0561882
Entity Address Address Line 1	1519 Ponce de León Avenue, Stop 23
Entity Address City Or Town	Santurce
Entity Address Country	PR
Entity Address Postal Zip Code	00908
City Area Code	787
Local Phone Number	729-8200
Security 12b Title	Common Stock ($0.10 par value)
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes
Entity Incorporation State Country Code	PR
Entity Well Known Seasoned Issuer	Yes
Entity Public Float			$ 2,331,878,559
Entity Voluntary Filers	No
Document Annual Report	true
Documents Incorporated By Reference TextBlock	Portions of the definitive proxy statement relating to the registrant’s annual meeting of stockholders scheduled to be held on May 20, 2020 are incorporated by reference in response to items 10, 11, 12, 13 and 14 of Part III of this Form 10-K.

Consolidated Statements of Fina

Consolidated Statements of Financial Condition - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Cash and due from banks	$ 546,391	$ 578,613
Money market investments:
Time deposits with other financial institutions	300	300
Other short-term investments	97,408	7,290
Total money market investments	97,708	7,590
Investment securities available for sale, at fair value:
Securities pledged with creditors right to repledge	130,165	182,735
Other Investment Securities Available For Sale	1,993,360	1,759,833
Total investment securities available for sale	2,123,525	1,942,568
Investment securities held to maturity at amortized cost (fair value 2019 - $110,374; 2018 - $125,658)	138,675	144,815
Equity securities	38,249	44,530
Total loans, net	8,886,543	8,704,947
Loans, net of allowance for loan and lease losses of $155,139 (2018 - $196,362)	8,847,066	8,661,761
Loans held for sale, at lower of cost or market	39,477	43,186
Premises and equipment, net	149,989	147,814
Other real estate owned (OREO)	101,626	131,402
Accrued interest receivable on loans and investments	50,205	50,365
Deferred income taxes, net	264,842	319,851
Other assets	213,513	171,066
Total assets	12,611,266	12,243,561
LIABILITIES
Total deposits	9,348,429	8,994,714
Non-interest-bearing deposits	2,367,856	2,395,481
Interest-bearing deposits	6,980,573	6,599,233
Securities Sold Under Agreements To Repurchase	100,000	150,086
Advances from the Federal Home Loan Bank (FHLB)	570,000	740,000
Other borrowings	184,150	184,150
Accounts payable and other liabilities	180,614	129,907
Total liabilities	10,383,193	10,198,857
Preferred stock, authorized 50,000,000 shares:
Non-cummulative Perpetual Monthly Income Preferred Stock: 22,004,000 shares issued; 1,444,146 shares outstanding; aggregate liquidation value of $36,104	36,104	36,104
Common stock, $0.10 par value, authorized, 2,000,000,000 shares; 222,103,721 shares issued (2018 - 221,789,509 shares issued)	22,210	22,179
Less: Treasury stock (at par value)	(474)	(455)
Common stock outstanding, 217,359,337 shares outstanding (2018 - 217,235,140 shares outstanding)	21,736	21,724
Additional paid-in capital	941,652	939,674
Retained earnings, includes legal surplus reserve of $97,586 million (2018- $80,191 million )	1,221,817	1,087,617
Accumulated other comprehensive loss, net of tax of $7,752	6,764	(40,415)
Total stockholders' equity	2,228,073	2,044,704
Total liabilities and stockholders' equity	$ 12,611,266	$ 12,243,561

Consolidated Statements of Fi_2

Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Statement Of Financial Position [Abstract]
Held to Maturity Fair value	$ 110,374	$ 125,658
Allowance for loan and lease losses	$ 155,139	$ 196,362
Preferred stock, shares authorized	50,000,000	50,000,000
Non-cumulative Perpetual Monthly Income Preferred Stock, shares issued	22,004,000	22,004,000
Non-cumulative Perpetual Monthly Income Preferred Stock, shares outstanding	1,444,146	1,444,146
Non-cumulative Perpetual Monthly Income Preferred Stock, aggregate liquidation value	$ 36,104	$ 36,104
Common stock, par value	$ 0.1	$ 0.1
Common stock, shares authorized	2,000,000,000	2,000,000,000
Common Stock, Shares, Issued	222,103,721	221,789,509
Common stock, shares outstanding	217,359,337	217,235,140
Income tax expense	$ 7,752	$ 7,752
Legal Surplus Amount	$ 97,586	$ 80,191

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest incomeand divided income:
Loans	$ 602,998	$ 553,647	$ 532,684
Investment securities	59,546	60,224	51,125
Money martket investments and interest-bearing cash accounts	13,353	11,096	4,614
Total interest income	675,897	624,967	588,423
Interest expense:
Deposits	77,782	67,651	66,537
Securities sold under agreements to repurchase	6,647	9,401	10,911
Advances from FHLB	14,963	13,549	11,140
Other borrowings	9,424	8,983	8,284
Total interest expense	108,816	99,584	96,872
Net interest income	567,081	525,383	491,551
Provision for loan and lease losses	40,225	59,253	144,254
Net interest income after provision for loan and lease losses	526,856	466,130	347,297
Non-interest income:
Service charges and fees on deposits accounts	23,916	21,679	22,314
Mortgage banking activities	17,058	17,228	13,491
Net (loss) gain on sale of investments	0	(34)	371
Other-than-temporary impairment (OTTI) losses on available-for-sale debt securities:
Total OTTI losses	(557)	0	(12,231)
Portion of OTTI recognized in OCI	60	(50)	0
Net impairment losses recognized in earnings	(497)	(50)	(12,231)
Gain on early extinguishment of debt	0	2,316	1,391
Insurance commission income	10,186	8,429	8,197
Other non-interest income	39,909	32,742	28,854
Total non-interest income	90,572	82,310	62,387
Non-interest expenses:
Employees' compensation and benefits	162,374	159,494	151,845
Occupancy and equipment	63,169	57,942	56,659
Business promotion	15,710	14,808	12,485
Professional fees	45,889	43,497	45,929
Taxes, other than income taxes	15,325	14,707	14,550
FDIC deposit insurance	6,319	8,909	13,725
Net loss on other real estate owned (OREO) and OREO operations	14,644	14,452	10,997
Credit and debit card processing expenses	16,472	15,546	13,212
Merger and restructuring costs	11,442	0	0
Communications	6,891	6,372	6,148
Other non-interest expenses	19,821	22,075	22,151
Total non-interest expenses	378,056	357,802	347,701
Income before income taxes	239,372	190,638	61,983
Income tax expense (benefit)	71,995	(10,970)	(4,973)
Net income	167,377	201,608	66,956
Net income attributable to common stockholders	$ 164,701	$ 198,932	$ 64,280
Net income per common share:
Basic	$ 0.76	$ 0.92	$ 0.30
Diluted	$ 0.76	$ 0.92	$ 0.30

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 167,377	$ 201,608	$ 66,956
Other comprehensive (loss) income:
Unrealized (loss) gain on debt securities on which an other-than-temporary impairment has been recognized	48	255	(896)
Reclassification adjustment for OTTI on debt securities included in net income	497	50	12,231
Reduction of non-credit OTTI component on securities sold	0	0	5,678
Reclassification adjusment for net gain included in net income on debt securities sold on which an OTTI has been recognized	0	0	(371)
Reclassification adjustments for net loss (gain) included in net income on other sales of available-for-sale securities	0	34	0
All other unrealized holding losses on available-for-sale securities arising during the year	46,634	(20,145)	(2,867)
Other comprehensive (loss) income for the year	47,179	(19,806)	13,775
Total comprehensive income	$ 214,556	$ 181,802	$ 80,731

CONSOLIDATED STATEMENT OF CASH

CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 167,377	$ 201,608	$ 66,956
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	17,592	15,026	16,424
Amortization of intangible assets	3,086	3,593	4,403
Provision for loan and lease losses	40,225	59,253	144,254
Deferred income tax expense benefit)	55,009	(25,043)	(13,152)
Stock-based compensation	3,949	5,825	7,296
Loss (gain) on sale of investments	0	34	(371)
OTTI on debt securities	497	50	12,231
Unrealized gain on derivative instruments	(2,934)	(46)	(187)
Gain on early extinguishment of debt	0	(2,316)	(1,391)
Net loss (gain) on sales of premises and equipment and other assets	242	(1,366)	(149)
Net gain on sale of loans	(10,446)	(2,639)	(6,291)
Net amortization/accretion of premiums, discounts, and deferred loan fees and costs	(8,117)	(8,397)	(8,757)
Originations and purchases of loans held for sale	(362,612)	(319,770)	(316,258)
Sales and repayments of loans held for sale	360,572	344,935	329,554
Amortization of broker placement fees	732	1,163	1,900
Net amortization/accretion of premiums and discounts on investment securities	2,483	2,407	2,764
(Increase) decrease in accrued interest receivable	(1,971)	6,649	(12,755)
Increase in accrued interest payable	1,081	236	1,390
Decrease (increase) in other assets	32,521	8,906	(202)
(Decrease) increase in other liabilities	(5,002)	(1,785)	8,305
Net cash provided by operating activities	294,284	288,323	235,964
Cash flows from investing activities:
Net (disbursement) repayments on loans held for investment	(341,870)	(277,863)	(150,772)
Proceeds from sale of loans held for investment	83,428	82,526	53,245
Proceeds from sale of repossessed assets	60,124	51,799	35,239
Proceeds from sale of available-for-sale securities	0	47,805	23,408
Purchases of available-for-sale securities	(765,432)	(509,884)	(265,415)
Proceeds from principal repayments and maturities of securities available-for-sale securities	628,675	387,817	232,977
Proceeds from principal repayments of held-to-maturity securities	6,138	5,828	5,563
Additions to premises and equipment	(22,478)	(20,514)	(9,417)
Proceeds from sale of premises and equipment and other assets	1,568	2,548	2,043
Net redemptions/purchases of other investment securities	6,292	(993)	(127)
Proceeds from the settlement of insurance claims-investing activity	587	7,673	0
Net cash used in investing activities	(342,968)	(223,258)	(73,256)
Cash flows from financing activities:
Net increase (decrease) in deposits	361,657	(36,889)	220,105
Net decrease in short-term borrowings	(15,086)	(49,914)	(70,000)
Repayments of long-term borrowings	(205,000)	(216,434)	(305,930)
Proceeds from long-term borrowings	0	120,000	415,000
Repurchase of outstanding common stock	(1,959)	(2,827)	(2,497)
Dividends paid on common stock	(30,356)	(6,517)	0
Dividends paid on preferred stock	(2,676)	(2,676)	(2,676)
Net cash provided by (used in) financing activities	106,580	(195,257)	254,002
Net increase (decrease) in cash and cash equivalents	57,896	(130,192)	416,710
Cash and cash equivalents at beginning of year	586,203	716,395	299,685
Cash and cash equivalents at end of year	644,099	586,203	716,395
Cash and cash equivalents include:
Cash and Cash Equivalents, at Carrying Value, Total	$ 644,099	$ 716,395	$ 716,395

CONSOLIDATED STATEMENT OF CHANG

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Preferred Stock [Member]	Common Stock Outstanding [Member]	Additional Paid In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss), net of tax [Member]
Total stockholders' equity		$ 36,104	$ 21,745	$ 931,856	$ 830,928	$ (34,390)
Balance at beginning of year at Dec. 31, 2016		36,104	21,745	931,856	830,928	(34,390)
Common stock issued as compensation			58	(58)
Common stock issued for exercised warrants			0	0
Common stock withheld for taxes			(44)	(2,453)
Restricted stock grants			110	(110)
Restricted stock forfeited			(241)	241
Stock-based compensation				7,296
Net income	$ 66,956				66,956
Amount Reclassified Out Of Accumulated Other Comprehensive Income Loss Per ASU 2016 01					0	0
Other comprehensive (loss) income, net of tax	13,775					13,775
Balance at end of year at Dec. 31, 2017	1,869,097	36,104	21,628	936,772	895,208	(20,615)
Total stockholders' equity	1,869,097	36,104	21,745	936,772	895,208	(34,390)
Total stockholders' equity	1,869,097	36,104	21,628	936,772	895,208	(20,615)
Common stock issued as compensation			27	(27)
Common stock issued for exercised warrants			73	(73)
Common stock withheld for taxes			(43)	(2,784)
Restricted stock grants			40	(40)
Restricted stock forfeited			(1)	1
Stock-based compensation				5,825
Net income	201,608				201,608
Amount Reclassified Out Of Accumulated Other Comprehensive Income Loss Per ASU 2016 01					(6)	6
Other comprehensive (loss) income, net of tax	(19,806)					(19,806)
Balance at end of year at Dec. 31, 2018	2,044,704	36,104	21,724	939,674	1,087,617	(40,415)
Total stockholders' equity	1,869,097	36,104	21,724	936,772	895,208	(40,415)
Total stockholders' equity	2,044,704	36,104	21,724	939,674	1,087,617	(40,415)
Common stock issued as compensation			0	0
Common stock issued for exercised warrants			0	0
Common stock withheld for taxes			(18)	(1,941)
Restricted stock grants			31	(31)
Restricted stock forfeited			(1)	1
Stock-based compensation				3,949
Net income	167,377				167,377
Amount Reclassified Out Of Accumulated Other Comprehensive Income Loss Per ASU 2016 01					0	0
Other comprehensive (loss) income, net of tax	47,179					47,179
Balance at end of year at Dec. 31, 2019	2,228,073	36,104	21,736	941,652	1,221,817	6,764
Total stockholders' equity	2,228,073	36,104	21,724	941,652	1,087,617	(40,415)
Total stockholders' equity	$ 2,228,073	$ 36,104	$ 21,736	$ 941,652	$ 1,221,817	$ 6,764

CONSOLIDATED STATEMENT OF CHA_2

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Statement Of Stockholders Equity [Abstract]
Common Stock Dividends Per Share Declared	$ 0.14	$ 0.03

NATURE OF BUSINESS AND SUMMARY

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES [Text Block]	NOTE 1 – NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The accompanying consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The following is a description of First BanCorp.’s (“First BanCorp.” or the “Corporation”) most significant policies: Nature of business First BanCorp. is a publicly owned, Puerto Rico-chartered financial holding company that is subject to regulation, supervision, and examination by the Board of Governors of the Federal Reserve System (the “Federal Reserve Board”). The Corporation is a full service provider of financial services and products with operations in Puerto Rico, the United States, the U.S. Virgin Islands (the “USVI”), and the British Virgin Islands (the “BVI”). The Corporation provides a wide range of financial services for retail, commercial, and institutional clients. The Corporation has two wholly-owned subsidiaries: FirstBank Puerto Rico (“FirstBank” or the “Bank”), and FirstBank Insurance Agency, Inc. (“FirstBank Insurance Agency”). FirstBank is a Puerto Rico-chartered commercial bank, and FirstBank Insurance Agency is a Puerto Rico-chartered insurance agency. FirstBank is subject to the supervision, examination, and regulation of both the Office of the Commissioner of Financial Institutions of the Commonwealth of Puerto Rico (the “OCIF”) and the FDIC. Deposits are insured through the FDIC Deposit Insurance Fund. FirstBank also operates in the State of Florida, subject to regulation and examination by the Florida Office of Financial Regulation and the FDIC, in the USVI, subject to regulation and examination by the United States Virgin Islands Banking Board, and in the BVI, subject to regulation by the British Virgin Islands Financial Services Commission. The Consumer Financial Protection Bureau (the “CFPB”) regulates FirstBank’s consumer financial products and services. FirstBank Insurance Agency is subject to the supervision, examination, and regulation of the Office of the Insurance Commissioner of the Commonwealth of Puerto Rico and the Division of Banking and Insurance Financial Regulation in the USVI and operates four offices in Puerto Rico and two offices in the USVI. FirstBank conducts its business through its main office located in San Juan, Puerto Rico, 46 banking branches in Puerto Rico, 11 banking branches in the USVI and the BVI, and 10 banking branches in the state of Florida (USA). As of December 31, 2019, FirstBank has 5 wholly owned subsidiaries with operations in Puerto Rico: First Federal Finance Corp. (d/b/a Money Express La Financiera), a finance company specializing in the origination of small loans with 28 offices in Puerto Rico; First Management of Puerto Rico, a domestic corporation, which holds tax-exempt assets; FirstBank Overseas Corporation, an international banking entity organized under the International Banking Entity Act of Puerto Rico; and two other dormant companies formerly engaged in the operation of certain other real estate owned (“OREO”) properties. Principles of consolidation The consolidated financial statements include the accounts of the Corporation and its subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. Statutory business trusts that are wholly-owned by the Corporation and are issuers of trust-preferred securities (“TRuPs”), and entities in which the Corporation has a non-controlling interest, are not consolidated in the Corporation’s consolidated financial statements in accordance with authoritative guidance issued by the Financial Accounting Standards Board (the “FASB”) for consolidation of variable interest entities (“VIE”). See “Variable Interest Entities” below for further details regarding the Corporation’s accounting policy for these entities. Use of estimates in the preparation of financial statements The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and contingent liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Cash and cash equivalents For purposes of reporting cash flows, cash and cash equivalents include cash on hand, cash items in transit, and amounts due from the Federal Reserve Bank of New York (the “New York FED” or “Federal Reserve”) and other depository institutions. The term also includes money market funds and short-term investments with original maturities of three months or less. Investment securities The Corporation classifies its investments in debt and equity securities into one of four categories: Held-to-maturity — Securities that the entity has the intent and ability to hold to maturity. These securities are carried at amortized cost. The Corporation may not sell or transfer held-to-maturity securities without calling into question its intent to hold other debt securities to maturity, unless a nonrecurring or unusual event that could not have been reasonably anticipated has occurred. Trading — Securities that are bought and held principally for the purpose of selling them in the near term. These securities are carried at fair value, with unrealized gains and losses reported in earnings. As of December 31, 2019 and 2018, the Corporation did not hold investment securities for trading purposes. Available-for-sale — Securities not classified as held-to-maturity or trading. These securities are carried at fair value, with unrealized holding gains and losses, net of deferred taxes, reported in OCI as a separate component of stockholders’ equity, and do not affect earnings until they are realized or are deemed to be other-than-temporarily impaired. Equity securities — Equity securities that do not have readily available fair values are classified as equity securities in the consolidated statements of financial condition. These securities are stated at the lower of cost or realizable value. This category is principally composed of stock that is owned by the Corporation to comply with Federal Home Loan Bank (“FHLB”) regulatory requirements. Their realizable value equals their cost. Also included in this category are marketable equity securities held at fair value with changes in unrealized gains or losses recorded through earnings pursuant to the requirements of ASU 2016-01. Premiums and discounts on debt securities are amortized as an adjustment to interest income on investments over the life of the related securities under the interest method without anticipating prepayments, except for mortgage-backed securities (“MBS”) where prepayments are anticipated. Premiums on callable debt securities, if any, are amortized to the earliest call date. Net realized gains and losses and valuation adjustments considered other-than-temporary, if any, related to investment securities are determined using the specific identification method and are reported in non-interest income as net gain (loss) on sale of investments and net impairment losses on debt securities, respectively. Purchases and sales of securities are recognized on a trade-date basis. Evaluation of other-than-temporary impairment (“OTTI”) on held-to-maturity and available-for-sale securities On a quarterly basis, the Corporation performs an assessment to determine whether there have been any events or economic circumstances indicating that a security with an unrealized loss has suffered an OTTI. A security is considered impaired if the fair value is less than its amortized cost basis. The Corporation employs a systematic methodology that considers all available evidence in evaluating a potential impairment of its investments. The impairment analysis of debt securities places special emphasis on the analysis of the cash position of the issuer and its cash and capital generation capacity, which could increase or diminish the issuer’s ability to repay its bond obligations, the length of time and the extent to which the fair value has been less than the amortized cost basis, any adverse change to the credit conditions and liquidity of the issuer, taking into consideration the latest information available about the financial condition of the issuer, credit ratings, the failure of the issuer to make scheduled principal or interest payments, recent legislation and government actions affecting the issuer’s industry, and actions taken by the issuer to deal with the economic climate. The Corporation also takes into consideration changes in the near-term prospects of the underlying collateral of a security, if any, such as changes in default rates, loss severity given default, and significant changes in prepayment assumptions and the level of cash flows generated from the underlying collateral, if any, supporting the principal and interest payments of the debt securities. OTTI must be recognized in earnings if the Corporation has the intent to sell the debt security or it is more likely than not that it will be required to sell the debt security before recovery of its amortized cost basis. However, even if the Corporation does not expect to sell a debt security, it must evaluate expected cash flows to be received and determine if a credit loss has occurred. An unrealized loss is generally deemed to be other-than-temporary and a credit loss is deemed to exist if the present value of the expected future cash flows is less than the amortized cost basis of the debt security. For available-for-sale and held-to-maturity debt securities the Corporations intends to hold, the credit loss component of an OTTI, if any, is recorded as net impairment losses on debt securities in the consolidated statements of income, while the remaining portion of the impairment loss is recognized in OCI, net of taxes, and included as a component of stockholders’ equity. The previous amortized cost basis less the OTTI recognized in earnings is the new amortized cost basis of the investment. The new amortized cost basis is not adjusted for subsequent recoveries in fair value. Subsequent increases and decreases (if not an OTTI) in the fair value of available-for-sale securities is included in OCI. For held-to-maturity debt securities, any OTTI recognized in OCI should be accreted from OCI to the amortized cost of the debt security over the remaining life of the debt security. However, for debt securities for which OTTI was recognized in earnings, the difference between the new amortized cost basis and the cash flows expected to be collected is accreted as interest income as long as the security is not placed in nonaccrual status. Debt securities held by the Corporation at year-end primarily consisted of securities issued by U.S. government-sponsored entities (“GSEs”), private label MBS, certain bonds issued by the Puerto Rico Housing Finance Authority, a government instrumentality of the Commonwealth of Puerto Rico, and obligations of certain municipalities in Puerto Rico. Given the explicit and implicit guarantees provided by the U.S. federal government, the Corporation believes the credit risk in securities issued by the GSEs is low. The Corporation’s OTTI assessment was concentrated on Puerto Rico government debt securities and private label MBS. For further information, including the methodology and assumptions used for the discounted cash flow analyses performed on these securities, refer to Note 6 – Investment Securities, to the consolidated financial statements. In addition, refer to Recently Issued Accounting Standards Not Yet Effective – Accounting for Financial Instruments – Credit Losses below for information about the adoption in 2020 of ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASC 326”), that modifies the OTTI model for available-for-sale debt securities to require an allowance for credit impairment instead of a direct write-down to the amortized cost of the debt securities, which allows for reversal of credit impairments in future periods based on improvements in credit. ASC 326 also requires the Corporation to estimate an allowance for credit losses for the estimated life of certain financial assets, including held to maturity securities. Loans held for investment Loans that the Corporation has the ability and intent to hold for the foreseeable future are classified as held for investment. The substantial majority of the Corporation’s loans are classified as held for investment. Loans are stated at the principal outstanding balance, net of unearned interest, cumulative charge-offs, unamortized deferred origination fees and costs, and unamortized premiums and discounts. Fees collected and costs incurred in the origination of new loans are deferred and amortized using the interest method or a method that approximates the interest method over the term of the loan as an adjustment to interest yield. Unearned interest on certain personal loans, auto loans and finance leases and discounts and premiums are recognized as income under a method that approximates the interest method. When a loan is paid-off or sold, any unamortized net deferred fee (cost) is credited (charged) to income. Credit card loans are reported at their outstanding unpaid principal balance plus uncollected billed interest and fees net of amounts deemed uncollectible. Purchased Credit Impaired (“PCI”) loans are reported net of any remaining purchase accounting adjustments. See “Loans Acquired” below for the accounting policy for PCI loans. Nonaccrual and Past-Due Loans - Loans on which the recognition of interest income has been discontinued are designated as nonaccrual. Loans are classified as nonaccrual when they are 90 days past due for interest and principal, with the exception of residential mortgage loans guaranteed by the Federal Housing Administration (the “FHA”) or the Veterans Administration (the “VA”) and credit cards. It is the Corporation’s policy to report delinquent mortgage loans insured by the FHA, or guaranteed by the VA or the Puerto Rico Housing Authority, as loans past due 90 days and still accruing as opposed to nonaccrual loans since the principal repayment is insured. However, the Corporation discontinues the recognition of income relating to FHA/VA loans when such loans are over 15 months delinquent, taking into consideration the FHA interest curtailment process, and relating to loans guaranteed by the Puerto Rico Housing Finance Authority when such loans are over 90 days delinquent. As permitted by regulatory guidance issued by the Federal Financial Institutions Examination Council, credit card loans are generally charged off in the period in which the account becomes 180 days past due. Credit card loans continue to accrue finance charges and fees until charged off at 180 days. Loans generally may be placed on nonaccrual status prior to when required by the policies described above when the full and timely collection of interest or principal becomes uncertain (generally based on an assessment of the borrower’s financial condition and the adequacy of collateral, if any). When a loan is placed on nonaccrual status, any accrued but uncollected interest income is reversed and charged against interest income and amortization of any net deferred fees is suspended. Interest income on nonaccrual loans is recognized only to the extent it is received in cash. However, when there is doubt regarding the ultimate collectability of loan principal, all cash thereafter received is applied to reduce the carrying value of such loans ( i.e. , the cost recovery method). Generally, the Corporation returns a loan to accrual status when all delinquent interest and principal becomes current under the terms of the loan agreement, or after a sustained period of repayment performance ( 6 months) and the loan is well secured and in the process of collection, and full repayment of the remaining contractual principal and interest is expected. PCI loans are not reported as nonaccrual as these loans were written down to fair value at the acquisition date and the accretable yield is recognized in interest income over the remaining life of the loans. Loans that are past due 30 days or more as to principal or interest are considered delinquent, with the exception of residential mortgage, commercial mortgage, and construction loans, which are considered past due when the borrower is in arrears on two or more monthly payments. Impaired Loans - A loan is considered impaired when, based upon current information and events, it is probable that the Corporation will be unable to collect all amounts due (including principal and interest) according to the contractual terms of the loan agreement, or the loan has been modified in a Troubled Debt Restructuring (“TDR”). Loans with insignificant delays or insignificant shortfalls in the amounts of payments expected to be collected are not considered to be impaired. The Corporation individually evaluates for impairment those loans in the construction, commercial mortgage, and commercial and industrial portfolios of $ 1 million or more as well as any boat loan of $ 1 million or more. Although the authoritative accounting guidance for a specific impairment of a loan excludes large groups of smaller balance homogeneous loans that are collectively evaluated for impairment ( e.g. , mortgage and consumer loans), it specifically requires that loan modifications considered TDRs be analyzed under its provision. The Corporation also evaluates for impairment purposes certain residential mortgage loans and home equity lines of credit with high delinquency and loan to value levels. Held-for-sale loans are not reported as impaired, as these loans are recorded at the lower of cost or fair value. The Corporation generally measures impairment and the related specific allowance for individually impaired loans based on the difference between the recorded investment of the loan and the present value of the loans’ expected future cash flows, discounted at the effective original interest rate of the loan at the time of modification, or the loan’s observable market price. If the loan is collateral dependent, the Corporation measures impairment based upon the fair value of the underlying collateral, instead of discounted cash flows, regardless of whether foreclosure is probable. Loans are identified as collateral dependent if the repayment is expected to be provided solely by the underlying collateral, through liquidation or operation of the collateral. When the fair value of the collateral is used to measure impairment on an impaired collateral-dependent loan and repayment or satisfaction of the loan is dependent on the sale of the collateral, the fair value of the collateral is adjusted to consider estimated costs to sell. If repayment is dependent only on the operation of the collateral, the fair value of the collateral is not adjusted for estimated costs to sell. If the fair value of the loan is less than the recorded investment, the Corporation recognizes impairment by either a direct write-down or establishing a specific allowance for the loan or by adjusting the previously-established specific allowance for the impaired loan. For an impaired loan that is collateral dependent, charge-offs are taken in the period in which the loan, or a portion of the loan, is deemed uncollectible, and any portion of the loan that is not charged off is adversely credit-risk rated at a level no better than substandard. A restructuring of a loan constitutes a TDR if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. TDR loans typically result from the Corporation’s loss mitigation activities and the modification of residential mortgage loans in accordance with guidelines similar to those of the U.S. government’s Home Affordable Modification Program, and could include rate reductions to a rate that is below market on the loan, principal forgiveness, term extensions, payment forbearance, refinancing of any past-due amounts, including interest, escrow, and late charges and fees, and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of collateral. Residential mortgage loans for which a binding offer to restructure has been extended are also classified as TDR loans. PCI loans are not classified as TDR loans. TDR loans are classified as either accrual or nonaccrual loans. Loans in accrual status may remain in accrual status when their contractual terms have been modified in a TDR if the loans had demonstrated performance prior to the restructuring and payment in full under the restructured terms is expected. Otherwise, loans on nonaccrual and restructured as a TDR will remain on nonaccrual status until the borrower has proven the ability to perform under the modified structure, generally for a minimum of six months, and there is evidence that such payments, can, and are likely to, continue as agreed. Refer to Note 9 – Loans Held for Investment, to the consolidated financial statements, for additional qualitative and quantitative information about TDR loans. In connection with commercial loan restructurings, the decision to maintain a loan that has been restructured on accrual status is based on a current, well-documented credit evaluation of the borrower’s financial condition and prospects for repayment under the modified terms. The credit evaluation reflects consideration of the borrower’s future capacity to pay, which may include evaluation of cash flow projections, consideration of the adequacy of collateral to cover all principal and interest, and trends indicating improving profitability and collectability of receivables. This evaluation also includes an evaluation of the borrower’s current willingness to pay, which may include a review of past payment history, an evaluation of the borrower’s willingness to provide information on a timely basis, and consideration of offers from the borrower to provide additional collateral or guarantor support. The evaluation of mortgage and consumer loans for restructurings includes an evaluation of the client’s disposable income and credit report, the value of the property, the loan-to-value relationship, and certain other client-specific factors that have affected the borrower’s ability to make timely principal and interest payments on the loan. The Corporation removes loans from TDR classification, consistent with authoritative accounting guidance that allows for a loan to be removed from the TDR classification in years following the modification, only when the following two circumstances are met:  The loan is in compliance with the terms of the restructuring agreement and, therefore, is not considered impaired under the revised terms; and  The loan yields a market interest rate at the time of the restructuring. In other words, the loan was restructured with an interest rate equal to or greater than what the Corporation would have been willing to accept at the time of the restructuring for a new loan with comparable risk. If both of the conditions are met, the loan can be removed from the TDR classification in calendar years after the year in which the restructuring took place. However, the loan continues to be individually evaluated for impairment. Loans classified as TDRs, including loans in trial payment periods (trial modifications), are considered impaired loans. With respect to the restructuring of a loan into two new loan notes, or loan splits, generally Note A of a loan split is restructured under market terms, and Note B is fully charged off. A partial charge-off may be recorded if Note B is collateral dependent and the source of repayment is independent of Note A. If Note A is in compliance with the restructured terms in years following the restructuring, Note A will be removed from the TDR classification and will continue to be individually evaluated for impairment. Refer to Note 9 – Loans Held for Investment, to the consolidated financial statements, for additional information about loan splits. A loan that had previously been modified in a TDR and is subsequently refinanced under then-current underwriting standards at a market rate with no concessionary terms is accounted for as a new loan and is no longer reported as a TDR. Interest income on impaired loans is recognized based on the Corporation’s policy for recognizing interest on accrual and nonaccrual loans. Loans Acquired - All purchased loans are recorded at fair value at the date of acquisition. Loans acquired with evidence of credit deterioration since their origination and where it is probable at the date of acquisition that the Corporation will not collect all contractually required principal and interest payments are considered PCI loans. Evidence of credit quality deterioration as of the purchase date may include statistics such as past due and nonaccrual status, credit scores, and modified loan terms. PCI loans have been aggregated into pools based on common risk characteristics. Each pool is accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows. In accounting for PCI loans, the difference between contractually required payments and the cash flows expected to be collected at acquisition is referred to as the nonaccretable difference. The nonaccretable difference, which is neither accreted into income nor recorded on the consolidated statements of financial condition, reflects estimated future credit losses expected to be incurred over the life of the pool of loans. The excess of cash flows expected to be collected over the estimated fair value of PCI loans is referred to as the accretable yield. This amount is not recorded on the statements of financial condition, but is accreted into interest income over the remaining life of the pool of loans, using the effective-yield method. Subsequent to acquisition, the Corporation continues to estimate cash flows expected to be collected over the life of the PCI loans using models that incorporate current key assumptions, such as default rates, loss severity, and prepayment speeds. Decreases in expected cash flows will generally result in an impairment charge to the provision for loan and lease losses and the establishment of an allowance for loan and lease losses. Increases in expected cash flows will generally result in a reduction in any allowance for loan and lease losses established subsequent to acquisition and an increase in the accretable yield. The adjusted accretable yield is recognized in interest income over the remaining life of the pool of loans. Resolutions of loans may include sales of loans to third parties, receipt of payments in settlement with the borrower, or foreclosure of the collateral. The Corporation’s policy is to remove an individual loan from a pool at its relative carrying amount. The carrying amount is defined as the loan’s current contractually required payments receivable less its remaining nonaccretable difference and accretable yield, but excluding any post-acquisition loan loss allowance. To determine the carrying value, the Corporation performs a pro-rata allocation of the pool’s total remaining nonaccretable difference and accretable yield to an individual loan in proportion to the loan’s current contractually required payments receivable compared to the pool’s total contractually required payments receivable. This removal method assumes that the amount received from a PCI loan resolution approximates pool performance expectations. The remaining accretable yield balance is unaffected and any material change in the remaining effective yield caused by this removal method is addressed by the Corporation’s quarterly cash flow evaluation process for each pool. Modified PCI loans are not removed from a pool even if those loans would otherwise be deemed TDRs. Because the initial fair value of PCI loans recorded at acquisition includes an estimate of credit losses expected to be realized over the remaining lives of the loans, the Corporation separately tracks and reports PCI loans and excludes these loans from its nonaccrual loan statistics. For acquired loans that are not deemed impaired at acquisition, subsequent to acquisition, the Corporation recognizes the difference between the initial fair value at acquisition and the undiscounted expected cash flows in interest income over the period in which substantially all of the inherent losses associated with the non-PCI loans at the acquisition date are estimated to occur. Thus, such loans are accounted for consistently with other originated loans, potentially being classified as nonaccrual or impaired, as well as being classified under the Corporation’s standard practices and procedures. In addition, these loans are considered in the determination of the allowance for loan losses. Refer to Recently Issued Accounting Standards Not Yet Effective – Accounting for Financial Instruments – Credit Losses below for information about the adoption in 2020 of ASC 326 that eliminates the existing guidance for PCI loans, but requires an allowance for purchased financial assets with more than insignificant deterioration since origination. Charge-off of Uncollectible Loans - Net charge-offs consist of the unpaid principal balances of loans held for investment that the Corporation determines are uncollectible, net of recovered amounts. Charge-offs are recorded as a reduction to the allowance for loan and lease losses and subsequent recoveries of previously charged-off amounts are credited to the allowance for loan and lease losses. Collateral dependent loans in the construction, commercial mortgage, and commercial and industrial loan portfolios are charged off to their net realizable value (fair value of collateral, less estimated costs to sell) when loans are considered to be uncollectible. Within the consumer loan portfolio, auto loans and finance leases are reserved once they are 120 days delinquent and are charged off to their estimated net realizable value when the collateral deficiency is deemed uncollectible ( i.e. , when foreclosure/repossession is probable) or when the loan is 365 days past due. Within the other consumer loan portfolio, closed-end loans are charged off when payments are 120 days in arrears, except small personal loans. Open-end (revolving credit) consumer loans, including credit card loans, and small personal loans are charged off when payments are 180 days in arrears. On a quarterly basis, residential mortgage loans that are 180 days delinquent and have an original loan-to-value ratio that is higher than 60% are reviewed and charged-off, as needed, to the fair value of the underlying collateral. Generally, all loans may be charged off or written down to the fair value of the collateral prior to the application of the policies described above if a loss-confirming event has occurred. Loss-confirming events include, but are not limited to, bankruptcy (unsecured), continued delinquency, or receipt of an asset valuation indicating a collateral deficiency when the asset is the sole source of repayment. The Corporation does not record charge-offs on PCI loans that are performing in accordance with or better than expectations as of the date of acquisition, as the fair value of these loans already reflects a credit component. The Corporation records charge-offs on PCI loans only if actual losses exceed estimated losses incorporated into the fair value recorded at acquisition and the amount is deemed uncollectible. Loans held for sale Loans that the Corporation intends to sell or that the Corporation does not have the ability and intent to hold for the foreseeable future are classified as held-for-sale loans. Loans held for sale are recorded at the lower of aggregate cost or fair value. Generally, the loans held-for-sale portfolio consists of conforming residential mortgage loans that the Corporation intends to sell to the Government National Mortgage Association (“GNMA”) and GSEs, such as the Federal National Mortgage Association (“FNMA”) and the U.S. Federal Home Loan Mortgage Corporation (“FHLMC”). Generally, residential mortgage loans held for sale are valued on an aggregate portfolio basis and the value is primarily derived from quotations based on the MBS market. The amount by which cost exceeds market value in the aggregate portfolio of loans held for sale, if any, is accounted for as a valua

POTENTIAL ACQUISITION OF BANCO

POTENTIAL ACQUISITION OF BANCO SANTANDER PUERTO RICO	12 Months Ended
	Dec. 31, 2019
Disclosure Text Block [Abstract]
Unusual or Infrequent Items, or Both, Disclosure [Text Block]	NOTE 2 – POTENTIAL ACQUISITION OF BANCO SANTANDER PUERTO RICO On October 21, 2019, the Corporation announced the signing of a stock purchase agreement between FirstBank and Santander Holdings USA, Inc., pursuant to which FirstBank will acquire Santander Bancorp (“Santander Bancorp”), a wholly-owned subsidiary of Santander Holdings USA, Inc. and the holding company of Banco Santander Puerto Rico (“BSPR”). The purchase price is based on a formula set forth in the stock purchase agreement and is subject to adjustment based on Santander BanCorp's consolidated balance sheet as of the closing date of the acquisition (the “Closing”). The purchase price formula consists of the following: (i) a base purchase price equal to 117.5% of Santander BanCorp's core tangible common equity; (ii) a fixed $ 65 million premium on core tangible common equity; and (iii) an adjustment equal to 100% of the deemed excess capital of Santander BanCorp at Closing. The transaction is structured as an all-cash acquisition of all of the issued and outstanding common stock of Santander Bancorp, the sole shareholder of BSPR, a corporation incorporated under the laws of the Commonwealth of Puerto Rico and sole shareholder of Santander Insurance Agency, Inc. (Santander Bancorp is referred to together with BSPR collectively as the “Acquired Companies”). Immediately following the Closing, Santander Bancorp (a direct wholly-owned subsidiary of FirstBank following the Closing) will merge with and into FirstBank (the “HoldCo Merger”), with FirstBank surviving the HoldCo Merger (the “Surviving Bank”). Immediately following the effectiveness of the HoldCo Merger, BSPR (a direct wholly-owned subsidiary of the Surviving Bank following the effectiveness of the HoldCo Merger) will merge with and into FirstBank, with FirstBank as the surviving entity in the merger. Prior to the Closing, Santander Holdings USA, Inc., has agreed to sell or otherwise transfer to Santander Holdings USA, Inc., any of its affiliates or any other third party (other than any Acquired Company) (i) all non-performing assets (along with all collateral and rights to collection related thereto) of BSPR (the “Non-Performing Assets Transfer”), and (ii) Santander Asset Management, LLC, a limited liability company organized under the laws of the Commonwealth of Puerto Rico and a direct wholly-owned subsidiary of Santander Bancorp (the “Reorganization”). The Closing is conditioned on, among other things, consummation of the Non-Performing Assets Transfer, the Reorganization, and receipt of all required regulatory approvals. As of December 31, 2019, the Corporation has incurred approximately $ 11.4 million in merger and restructuring cost in connection with the pending acquisition of BSPR, which are presented as Merger and Restructuring costs in the accompanying consolidated statements of income for the year ended December 31, 2019. Merger and restructuring costs primarily have included advisory, legal, valuation, and other professional service fees, as well as charges related to a voluntary separation program (the “VSP”) offered to eligible employees at FirstBank in connection with initiatives to capitalize on expected operational efficiencies from the acquisition. The transaction has been unanimously approved by both companies’ Boards of Directors. The transaction is expected to close in the middle of 2020, subject to the satisfaction of customary closing conditions, including, as previously mentioned, receipt of all required regulatory approvals. There can be no assurance that the regulatory approvals received will not contain a condition or requirement that results in a failure to satisfy the conditions to closing set forth in the stock purchase agreement.

UPDATE ON EFFECTS OF NATURAL DI

UPDATE ON EFFECTS OF NATURAL DISASTERS	12 Months Ended
	Dec. 31, 2019
Update On Effects Of Natural Disasters [Abstract]
Natural Disasters [Text Block]	NOTE 3 – UPDATE ON EFFECTS OF NATURAL DISASTERS Two strong hurricanes affected the Corporation’s service areas during September 2017. The following summarizes the more significant continuing financial repercussions of these natural disasters on the Corporation and its major subsidiary, FirstBank. Credit Quality and Allowance for Loan and Lease Losses During the first quarter of 2019, the Corporation recorded a loan loss reserve release of approximately $ 6.4 million in connection with revised estimates associated with the effects of the hurricanes. The revised estimates were primarily attributable to updated payment patterns and probability of default credit risk analyses applied to consumer borrowers, and updated assessments of financial performance and repayment prospects of certain individually-assessed commercial credits. The significant overall uncertainties in the early assessments of hurricane-related credit losses have been largely addressed and the hurricanes’ effect on credit quality is now reflected in the normal process for determining the allowance for loan and lease losses and not through a separate hurricane-related qualitative reserve. Casualty Losses and Insurance Claims The Corporation incurred a variety of costs to operate in disaster response mode, and some facilities and their contents, including certain OREO properties, were damaged by the hurricanes. The Corporation maintains insurance for casualty losses, as well as for reasonable and necessary disaster response costs and certain revenue lost through business interruption. Insurance claim receivables were established for some of the individual costs, when incurred, based on management’s understanding of the underlying coverage and when realization of the claim was deemed probable. During 2019, the Corporation reached settlements on certain claims arising from the hurricanes. As a result, the Corporation received insurance proceeds of approximately $ 4.1 million, primarily involving repairs and maintenance costs, and impairments related to facilities in the USVI and the BVI. The insurance proceeds were recorded against incurred losses or previously-established accounts receivable. Insurance recoveries are recorded in the same income statement caption as the incurred losses. Recoveries from insurance proceeds in excess of losses incurred, amounting to $ 0.6 million in the second quarter of 2019, were recognized as a gain from insurance proceeds and reported as part of Other non-interest income in the consolidated statements of income. As of December 31, 2019, the Corporation had an insurance claim receivable of $ 0.6 million (December 31, 2018 - $ 3.4 million), which is included as part of Other assets in the consolidated statements of financial condition. Management also believes that there is a possibility that some gains will be recognized with respect to casualty and lost revenue claims in future periods, but this is contingent on reaching agreements on the Corporation’s claims with the insurance carriers. During the first quarter of 2019, the Corporation recorded a $ 2.3 million credit against employees’ compensation and benefits expenses related to an employee retention benefit payment (the “Benefit”) received by the Corporation by virtue of the Disaster Tax Relief and Airport Extension Act of 2017, as amended (the “Act”). The Benefit was available to eligible employers affected by Hurricanes Irma and Maria. An eligible employer, as established in the Internal Revenue Circular Letter No. 18-11 issued by the Puerto Rico Department of Treasury, is an employer that (i) on September 16, 2017 (or September 4, 2017 for Hurricane Irma) was engaged in a trade or business in Puerto Rico; (ii) whose business became inoperable on any day after such date and before January 1, 2018, due to damage caused by Hurricane Irma or Maria; and (iii) continued to pay wages to its eligible employees during the period in which the business was inoperable. For purposes of the income tax return, the Benefit did not affect the Corporation’s right to claim a deduction on wages paid and the amount of the Benefit was not treated as taxable income.

RESTRICTIONS ON CASH AND DUE FR

RESTRICTIONS ON CASH AND DUE FROM BANKS	12 Months Ended
	Dec. 31, 2019
Restricted Cash and Cash Equivalents [Abstract]
Restrictions on Cash and Due from Banks [Text Block]	NOTE 4 – RESTRICTIONS ON CASH AND DUE FROM BANKS The Corporation’s bank subsidiary, FirstBank, is required by law to maintain minimum average weekly reserve balances to cover demand deposits. The amount of those minimum average weekly reserve balances for the period that ended December 31, 2019 was $ 422.1 million (2018 - $ 420.9 million). As of December 31, 2019 and 2018, the Bank complied with the requirement. Cash and due from banks as well as other highly liquid securities are used to cover the required average reserve balances. As of December 31, 2019, and as required by the Puerto Rico International Banking Law, the Corporation maintained $ 300,000 in time deposits, which were considered restricted assets related to FirstBank Overseas Corporation, an international banking entity that is a subsidiary of FirstBank.

MONEY MARKET INVESTMENTS

MONEY MARKET INVESTMENTS	12 Months Ended
	Dec. 31, 2019
Cash and Cash Equivalents, at Carrying Value [Abstract]
Money Market Investments [Text Block]	NOTE 5 – MONEY MARKET INVESTMENTS Money market investments are composed of time deposits, overnight deposits with other financial institutions, and other short-term investments with original maturities of three months or less. Money market investments as of December 31, 2019 and 2018 were as follows: 2019 2018 (Dollars in thousands) Time deposits with other financial institutions (1) (2) $ 300 $ 300 Overnight deposits with other financial institutions (3) 96,228 6,111 Other short-term investments (4) 1,180 1,179 $ 97,708 $ 7,590 Consists of restricted time deposits required by the Puerto Rico International Banking Law. Weighted-average interest rate of 1.00% as of each December 31, 2019 and 2018. Weighted-average interest rate of % and % as of December 31, 2019 and 2018, respectively. Weighted-average interest rate of 0.11% as of each December 31, 2019 and 2018. As of December 31, 2019 and 2018, the Corporation had no money market investments pledged as collateral.

INVESTMENT SECURITIES

INVESTMENT SECURITIES	12 Months Ended
	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
INVESTMENT SECURITIES [Text Block]	NOTE 6 – INVESTMENT SECURITIES Investment Securities Available for Sale The amortized cost, non-credit loss component of OTTI recorded in OCI, gross unrealized gains and losses recorded in OCI, estimated fair value, and weighted-average yield on investment securities available for sale by contractual maturities as of December 31, 2019 and 2018 were as follows: December 31, 2019 Amortized cost Non-credit Loss Component of OTTI Recorded in OCI Gross Fair value Unrealized Weighted- Gains Losses average yield% (Dollars in thousands) U.S. Treasury securities: After 1 to 5 years $ 7,478 $ - $ 1 $ - $ 7,479 1.65 U.S. government-sponsored agencies' obligations: Due within one year 93,299 - 103 106 93,296 1.67 After 1 to 5 years 142,513 - 676 52 143,137 2.12 After 5 to 10 years 63,764 - 165 150 63,779 2.33 After 10 years 24,624 - - 116 24,508 2.00 Puerto Rico government obligations: After 5 to 10 years 4,000 - 348 - 4,348 5.12 After 10 years (1) 4,166 - - 1,192 2,974 6.97 United States and Puerto Rico government obligations 339,844 - 1,293 1,616 339,521 2.11 MBS: FHLMC certificates: After 5 to 10 years 81,418 - 589 228 81,779 2.16 After 10 years 424,316 - 3,873 758 427,431 2.50 505,734 - 4,462 986 509,210 2.44 GNMA certificates: After 1 to 5 years 4,357 - 45 - 4,402 3.26 After 5 to 10 years 42,303 - 607 - 42,910 2.77 After 10 years 258,944 - 7,126 500 265,570 3.03 305,604 - 7,778 500 312,882 3.00 FNMA certificates: After 1 to 5 years 19,779 - 415 3 20,191 2.79 After 5 to 10 years 140,599 - 1,257 641 141,215 2.14 After 10 years 700,213 - 9,006 1,208 708,011 2.58 860,591 - 10,678 1,852 869,417 2.51 Collateralized mortgage obligations issued or guaranteed by the FHLMC, FNMA and GNMA: After 1 to 5 years 608 - - 1 607 2.43 After 10 years 80,130 - 362 220 80,272 2.76 80,738 - 362 221 80,879 2.75 Private label: After 10 years 15,997 4,881 - - 11,116 3.90 Total MBS 1,768,664 4,881 23,280 3,559 1,783,504 2.60 Other After 1 to 5 years 500 - - - 500 2.95 Total investment securities available for sale $ 2,109,008 $ 4,881 $ 24,573 $ 5,175 $ 2,123,525 2.52 Consist of a residential pass-through MBS issued by the Puerto Rico Housing Finance Authority (“PRHFA”) that is collateralized by certain second mortgages originated under a program launched by the Puerto Rico government in 2010. December 31, 2018 Amortized cost Non-credit Loss Component of OTTI Recorded in OCI Gross Fair value Unrealized Weighted- Gains Losses average yield% (Dollars in thousands) U.S. Treasury securities: Due within one year $ 7,489 $ - $ - $ 33 $ 7,456 1.29 U.S. government-sponsored agencies' obligations: Due within one year 191,531 - - 1,908 189,623 1.28 After 1 to 5 years 184,851 - 203 2,249 182,805 2.07 After 5 to 10 years 195,750 - 286 1,674 194,362 2.95 After 10 years 34,627 - - 217 34,410 2.68 Puerto Rico government obligations: After 5 to 10 years 4,000 - 128 - 4,128 5.12 After 10 years (1) 4,185 - - 1,361 2,824 6.97 United States and Puerto Rico government obligations 622,433 - 617 7,442 615,608 2.18 MBS: FHLMC certificates: After 5 to 10 years 92,149 - 31 1,850 90,330 2.09 After 10 years 265,624 - 523 6,699 259,448 2.52 357,773 - 554 8,549 349,778 2.41 GNMA certificates: After 1 to 5 years 176 - 3 - 179 3.43 After 5 to 10 years 61,604 - 408 503 61,509 2.88 After 10 years 118,898 - 2,938 747 121,089 3.92 180,678 - 3,349 1,250 182,777 3.56 FNMA certificates: Due within one year 119 - 2 - 121 2.20 After 1 to 5 years 19,798 - 50 122 19,726 2.79 After 5 to 10 years 165,067 - 2 3,822 161,247 2.13 After 10 years 543,972 - 2,211 13,233 532,950 2.67 728,956 - 2,265 17,177 714,044 2.55 Collateralized mortgage obligations issued or guaranteed by the FHLMC and GNMA: After 1 to 5 years 6,530 - 1 18 6,513 3.15 After 10 years 59,020 - 474 60 59,434 3.22 65,550 - 475 78 65,947 3.22 Private label: After 10 years 19,340 5,426 - - 13,914 4.89 Total MBS 1,352,297 5,426 6,643 27,054 1,326,460 2.71 Other After 1 to 5 years 500 - - - 500 2.96 Total investment securities available for sale $ 1,975,230 $ 5,426 $ 7,260 $ 34,496 $ 1,942,568 2.55 Consist of a residential pass-through MBS issued by the PRHFA that is collateralized by certain second mortgages originated under a program launched by the Puerto Rico government in 2010. Maturities of MBS are based on the period of final contractual maturity. Expected maturities of investments might differ from contractual maturities because they may be subject to prepayments and/or call options. The weighted-average yield on investment securities available for sale is based on amortized cost and, therefore, does not give effect to changes in fair value. The net unrealized gain or loss on securities available for sale and the noncredit loss component of OTTI are presented as part of OCI. The aggregate amortized cost and approximate market value of investment securities available for sale as of December 31, 2019 by contractual maturity are shown below: Amortized Cost Fair Value (Dollars in thousands) United States and Puerto Rico government obligations, and other debt securities: Within 1 year $ 93,299 $ 93,296 After 1 to 5 years 150,491 151,116 After 5 to 10 years 67,764 68,127 After 10 years 28,790 27,482 340,344 340,021 MBS and Collateralized Mortgage Obligations (1) 1,768,664 1,783,504 Total investment securities available for sale $ 2,109,008 $ 2,123,525 (1) The expected maturities of MBS and collateralized mortgage obligations may differ from their contractual maturities because they may be subject to prepayments. The following tables show the Corporation’s available-for-sale investments’ fair value and gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of December 31, 2019 and December 31, 2018. The tables also include debt securities for which an OTTI was recognized and only the amount related to a credit loss was recognized in earnings. For unrealized losses for which OTTI was recognized, the related credit loss was charged against the amortized cost basis of the debt security. As of December 31, 2019 Less than 12 months 12 months or more Total Unrealized Unrealized Unrealized Fair Value Losses Fair Value Losses Fair Value Losses (In thousands) Debt securities: Puerto Rico-government obligations $ - $ - $ 2,974 $ 1,192 $ 2,974 $ 1,192 U.S. Treasury and U.S. government agencies’ obligations 45,073 172 99,764 252 144,837 424 MBS: FNMA 58,668 499 173,708 1,353 232,376 1,852 FHLMC 74,134 270 63,864 716 137,998 986 GNMA 79,145 472 7,203 28 86,348 500 Collateralized mortgage obligations issued or guaranteed by the FHLMC, FNMA and GNMA 21,873 221 - - 21,873 221 Private label MBS - - 11,116 4,881 11,116 4,881 $ 278,893 $ 1,634 $ 358,629 $ 8,422 $ 637,522 $ 10,056 As of December 31, 2018 Less than 12 months 12 months or more Total Unrealized Unrealized Unrealized Fair Value Losses Fair Value Losses Fair Value Losses (In thousands) Debt securities: Puerto Rico-government obligations $ - $ - $ 2,824 $ 1,361 $ 2,824 $ 1,361 U.S. Treasury and U.S. government agencies’ obligations 16,669 77 468,094 6,004 484,763 6,081 MBS: FNMA 25,079 129 521,871 17,048 546,950 17,177 FHLMC 3,382 32 263,798 8,517 267,180 8,549 GNMA 3,364 15 57,535 1,235 60,899 1,250 Collateralized mortgage obligations issued or guaranteed by the FHLMC and GNMA 16,065 78 - - 16,065 78 Private label MBS - - 13,914 5,426 13,914 5,426 $ 64,559 $ 331 $ 1,328,036 $ 39,591 $ 1,392,595 $ 39,922 Assessment for OTTI Debt securities issued by U.S. government agencies, U.S. government-sponsored entities, and the U.S. Treasury accounted for approximately 99% of the total available-for-sale portfolio as of December 31, 2019, and no credit losses are expected, given the explicit and implicit guarantees provided by the U.S. federal government. Because the decline in fair value is attributable to changes in interest rates, and not credit quality, and because the Corporation does not have the intent to sell these U.S. agencies debt securities and it is likely that it will not be required to sell the securities before their anticipated recovery, the Corporation does not consider these securities to be other-than-temporarily impaired as of December 31, 2019. The Corporation’s OTTI assessment was focused on private label MBS, and on Puerto Rico government debt securities, for which credit losses are evaluated on a quarterly basis. The Corporation considered the following factors in determining whether a credit loss existed and the period over which the debt security is expected to recover:  The length of time and the extent to which the fair value has been less than the amortized cost basis;  Any adverse change to the credit conditions and liquidity of the issuer, taking into consideration the latest information available about the financial condition of the issuer, credit ratings, the failure of the issuer to make scheduled principal or interest payments, any recent legislation and government actions affecting the issuer’s industry, and actions taken by the issuer to deal with the present economic climate;  Changes in the near term prospects of the underlying collateral for a security, if any, such as changes in default rates, loss severity given a default, and significant changes in prepayment assumptions; and  The level of cash flows generated from the underlying collateral, if any, supporting the principal and interest payments of the debt securities. The Corporation recorded OTTI losses on available-for-sale debt securities as follows: Year Ended December 31, 2019 2018 2017 (In thousands) Total OTTI losses $ ( 557) $ - $ ( 12,231) Portion of OTTI recognized in OCI 60 ( 50) - Net impairment losses recognized in earnings (1) $ ( 497) $ ( 50) $ ( 12,231) For the years ended December 31, 2019 and 2018, the credit impairments of $ 0.5 million and $ 50 thousand, respectively, recognized in earnings consisted of credit losses on private label MBS. For the year ended December 31, 2017, approximately $ 12.2 million of the credit impairment recognized in earnings consisted of credit losses on Puerto Rico government debt securities that were sold in the second quarter of 2017, as further discussed below. The following tables summarize the roll-forward of credit losses on debt securities held by the Corporation for which a portion of an OTTI is also recognized in OCI: Cumulative OTTI credit losses recognized in earnings on securities still held Credit impairments Credit loss December 31, recognized in earnings on reductions for December 31, 2018 securities that have been securities sold 2019 Balance previously impaired during the period Balance (In thousands) Available-for-sale securities Private label MBS $ 6,842 $ 497 $ - $ 7,339 Cumulative OTTI credit losses recognized in earnings on securities still held Credit impairments Credit loss December 31, recognized in earnings on reductions for December 31, 2017 securities that have been securities sold 2018 Balance previously impaired during the period Balance (In thousands) Available-for-sale securities Private label MBS $ 6,792 $ 50 $ - $ 6,842 Cumulative OTTI credit losses recognized in earnings on securities still held Credit impairments Credit loss December 31, recognized in earnings on reductions for December 31, 2016 securities that have been securities sold 2017 Balance previously impaired during the period Balance (In thousands) Available-for-sale securities Puerto Rico government obligations $ 22,189 $ 12,231 $ ( 34,420) $ - Private label MBS 6,792 - - 6,792 Total OTTI credit losses for available-for-sale debt securities $ 28,981 $ 12,231 $ ( 34,420) $ 6,792 During the second quarter of 2017, the Corporation sold for an aggregate of $ 23.4 million three Puerto Rico government available-for-sale debt securities, specifically bonds of the Government Development Bank for Puerto Rico (the “GDB”) and the Puerto Rico Public Buildings Authority, carried on its book at an amortized cost at the time of sale of $ 23.0 million (net of $ 34.4 million in cumulative OTTI impairment charges). This transaction resulted in a $ 0.4 million recovery from previous OTTI charges reflected in the consolidated statement of income as part of “net gain on sale of investments.” Approximately $ 12.2 million of the cumulative OTTI charges on these securities was recorded in the first quarter of 2017. For the OTTI charge recorded on the Puerto Rico government debt securities during 2017, the Corporation considered the latest available information about the Puerto Rico government’s financial condition, including but not limited to credit ratings downgrades, revised estimates of recovery rates, and other relevant developments, such as government actions, including debt exchange proposals and the fiscal plan published by the Puerto Rico government in March 2017, as applicable. The Corporation applied a discounted cash flow analysis to its Puerto Rico government debt securities in order to calculate the cash flows expected to be collected and to determine whether any portion of the decline in market value of these securities was considered a credit-related OTTI. The analysis derived an estimate of value based on the present value of risk-adjusted cash flows of the underlying securities and included the following components:  The contractual future cash flows of the bonds were projected based on the key terms as set forth in the official statements for each security. Such key terms include, among others, the interest rate, amortization schedule, if any, and maturity date.  The risk-adjusted cash flows were calculated based on a probability of default analysis and recovery rate assumptions, including the weighting of different scenarios of ultimate recovery, considering the credit rating of each security. Constant monthly default rates were assumed throughout the life of the bonds, which considered the respective security's credit rating as of the date of the analysis.  The adjusted future cash flows were then discounted at the original effective yield of each investment based on the purchase price and expected risk-adjusted future cash flows as of the purchase date of each investment. The discounted risk-adjusted cash flow analysis for the three Puerto Rico government bonds mentioned above assumed a default probability of 100%, as these three nonaccrual bonds had been in default since the third quarter of 2016. Based on this analysis, the Corporation recorded in the first quarter of 2017 credit-related OTTI amounting to $ 12.2 million, assuming recovery rates ranging from 15% to 80% (with a weighted average of 41%). As of December 31, 2019, the Corporation’s available-for-sale investment securities portfolio included bonds of the PRHFA at an amortized cost of $ 8.2 million (fair value - $ 7.3 million). Approximately $ 4.2 million (fair value - $ 3.0 million) of those bonds consisted of a residential pass-through MBS issued by the PRHFA that is collateralized by certain second mortgages originated under a program launched by the Puerto Rico government in 2010. This bond was structured as a zero-coupon bond for the first ten years (up to July 2019). The underlying source of payment on this bond is second mortgage loans in Puerto Rico; PRHFA and not the central government provides a guarantee in the event of default and subsequent foreclosure of the underlying properties. Based on the quarterly analyses performed, management concluded that these obligations were not other-than-temporarily impaired as of December 31, 2019. In the event that the second mortgage loans default and the collateral is insufficient to satisfy the outstanding balance of this bond, PRHFA’s ability to honor its insurance will depend on, among other factors, the financial condition of PRHFA at the time such obligation become due and payable. A deterioration of the Puerto Rico economy or fiscal health of the PRHFA could further impact the value of these securities, resulting in losses to the Corporation. The Corporation does not have the intent to sell these debt securities prior to recovery of the amortized cost basis. In addition, during 2019 and 2018, the Corporation recorded credit-related impairment losses of $ 0.5 million and $ 50 thousand, respectively, associated with private label MBS, which are collateralized by fixed-rate mortgages on single-family residential properties in the United States. The interest rate on these private-label MBS is variable, tied to 3-month LIBOR and limited to the weighted-average coupon on the underlying collateral. The underlying mortgages are fixed-rate, single-family loans with original FICO scores (over 700) and moderate loan-to-value ratios (under 80%), as well as moderate delinquency levels. Based on the expected cash flows, and since the Corporation does not have the intention to sell the securities and has sufficient capital and liquidity to hold these securities until a recovery of the fair value occurs, only the credit loss component, if any, has been reflected in earnings. Significant assumptions in the valuation of the private label MBS were as follows: As of As of December 31, 2019 December 31, 2018 Weighted Range Weighted Range Average Minimum Maximum Average Minimum Maximum Discount rate 13.7% 13.7% 13.7% 14.5% 14.5% 14.5% Prepayment rate 7.9% 6.8% 10.3% 11.4% 3.3% 20.9% Projected Cumulative Loss Rate 2.8% 0.0% 7.4% 3.0% 0.0% 6.8% Total proceeds from the sale of securities available for sale during 2018 and 2017 amounted to approximately $ 47.8 million and $ 23.4 million, respectively. There were no sales of securities available for sale during 2019. For the year ended December 31, 2018, the Corporation recorded a loss of approximately $ 59 thousand on the sale of U.S. agencies MBS and a gain of approximately $ 22 thousand on the sale of the U.S. agency callable debt securities. In 2017, the Corporation recorded a $ 0.4 million recovery from previous OTTI charges on the sale of Puerto Rico government debt securities with an amortized cost of $ 23.0 million. The following table states the names of issuers, and the aggregate amortized cost and market value of the securities of such issuers, when the aggregate amortized cost of such securities exceeds 10% of the Corporation’s stockholders’ equity. This information excludes securities of the U.S. and Puerto Rico government. Investments in obligations issued by a state of the U.S. and its political subdivisions and agencies that are payable and secured by the same source of revenue or taxing authority, other than the U.S. government, are considered securities of a single issuer and include debt securities and MBS. As of As of December 31, 2019 December 31, 2018 Amortized Amortized Cost Fair Value Cost Fair Value (In thousands) FHLMC $ 509,769 $ 513,249 $ 387,703 $ 379,653 GNMA 370,511 377,872 239,698 242,211 FNMA 915,704 924,663 791,200 775,673 FHLB 191,581 191,869 334,717 330,714 Investments Held to Maturity The amortized cost, gross unrecognized gains and losses, estimated fair value, weighted-average yield and contractual maturities of investment securities held to maturity as of December 31, 2019 and December 31, 2018 were as follows : December 31, 2019 Amortized cost Fair value Gross Unrecognized Weighted- (Dollars in thousands) gains losses average yield% Puerto Rico Municipal Bonds: Due within one year $ 321 $ - $ 6 $ 315 5.84 After 1 to 5 years 8,264 - 736 7,528 5.18 After 5 to 10 years 56,511 - 8,646 47,865 5.77 After 10 years 73,579 - 18,913 54,666 5.44 Total investment securities held to maturity $ 138,675 $ - $ 28,301 $ 110,374 5.56 December 31, 2018 Amortized cost Fair value Gross Unrecognized Weighted- (Dollars in thousands) gains losses average yield% Puerto Rico Municipal Bonds: After 1 to 5 years $ 6,100 $ - $ 435 $ 5,665 4.79 After 5 to 10 years 53,016 - 5,360 47,656 6.00 After 10 years 85,699 - 13,362 72,337 5.86 Total investment securities held to maturity $ 144,815 $ - $ 19,157 $ 125,658 5.86 The following tables show the Corporation’s held-to-maturity investments’ fair value and gross unrecognized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrecognized loss position, as of December 31, 2019 and December 31, 2018: As of December 31, 2019 Less than 12 months 12 months or more Total Unrecognized Unrecognized Unrecognized Fair Value Losses Fair Value Losses Fair Value Losses (In thousands) Debt securities: Puerto Rico Municipal Bonds $ - $ - $ 110,374 $ 28,301 $ 110,374 $ 28,301 As of December 31, 2018 Less than 12 months 12 months or more Total Unrecognized Unrecognized Unrecognized Fair Value Losses Fair Value Losses Fair Value Losses (In thousands) Debt securities: Puerto Rico Municipal Bonds $ - $ - $ 125,658 $ 19,157 $ 125,658 $ 19,157 The Corporation determines the fair market value of Puerto Rico Municipal Bonds based on a discounted cash flow analysis using risk-adjusted discount rates. A security with similar characteristics traded in the open market is used as a proxy for each municipal bond. Then, the cash flow is discounted at the average spread over the discount curve exhibited by the proxy security at the end of each quarter, plus any corresponding discount rate adjustments to reflect recent transactions or market yield expectations for these types of transactions. All of the Puerto Rico Municipal Bonds were current as to scheduled contractual payments as of December 31, 2019. Approximately 70% of the held-to-maturity municipal bonds were issued by three of the largest municipalities in Puerto Rico. The vast majority of revenues of these three municipalities is independent of the Puerto Rico central government. These obligations typically are not issued in bearer form, nor are they registered with the SEC, and are not rated by external credit agencies. In most cases, these bonds have priority over the payment of operating costs and expenses of the municipality, which are required by law to levy special property taxes in such amounts as are required for the payment of all of their respective general obligation bonds and loans. The Corporation performs periodic credit quality reviews on these issuers. During 2019, the Corporation received scheduled principal payments amounting to approximately $ 6.0 million from these Puerto Rico Municipal Bonds. Based on the quarterly analysis performed, management concluded that no individual debt security held to maturity was other-than-temporarily impaired as of December 31, 2019. During the second quarter of 2019, the oversight board established by the Puerto Rico Oversight, Management, and Economic Stability Act (“PROMESA”) announced the designation of the Puerto Rico’s 78 municipalities as covered instrumentalities under PROMESA. Meanwhile, the latest fiscal plan certified by the PROMESA oversight board did not contemplate a restructuring of the debt of Puerto Rico’s municipalities, but the plan did call for the gradual elimination of budgetary subsidies provided to municipalities by the central government. Furthermore, municipalities are also likely to be affected by the negative economic and other effects resulting from expense, revenue or cash management measures taken by the Puerto Rico government to address its fiscal and liquidity shortfalls, or measures included in fiscal plans of other government entities, such as the fiscal plans of the GDB and the Puerto Rico Electric Power Authority (“PREPA”). Given the uncertain effect that the negative fiscal situation of the Puerto Rico central government and the measures taken, or to be taken, by other government entities may have on municipalities, the Corporation cannot be certain whether impairment charges relating to these securities will be required in the future. From time to time, the Corporation has securities held to maturity with an original maturity of three months or less that are considered cash and cash equivalents and are classified as money market investments in the consolidated statements of financial condition. As of December 31, 2019 and December 31, 2018, the Corporation had no outstanding securities held to maturity that were classified as cash and cash equivalents.

EQUITY SECURITIES

EQUITY SECURITIES	12 Months Ended
	Dec. 31, 2019
Investments, All Other Investments [Abstract]
Other Investment Securities [Text Block]	NOTE 7 – EQUITY SECURITIES Institutions that are members of the FHLB system are required to maintain a minimum investment in FHLB stock. Such minimum investment is calculated as a percentage of aggregate outstanding mortgages, and the FHLB requires an additional investment that is calculated as a percentage of total FHLB advances, letters of credit, and the collateralized portion of outstanding interest-rate swaps. The stock is capital stock issued at $ 100 par value. Both stock and cash dividends may be received on FHLB stock. As of December 31, 2019 and 2018, the Corporation had investments in FHLB stock carried at a cost of $ 34.1 million and $ 41.9 million, respectively. Dividend income from FHLB stock for each of the years ended December 31, 2019 and 2018 amounted to $ 2.7 million, and for 2017 amounted to $ 2.1 million. The FHLB of New York issued the shares of FHLB stock owned by the Corporation. The FHLB of New York is part of the Federal Home Loan Bank System, a national wholesale banking network of 11 regional, stockholder-owned congressionally chartered banks. The FHLBs are all privately capitalized and operated by their member stockholders. The system is supervised by the Federal Housing Finance Agency, which ensures that the FHLBs operate in a financially safe and sound manner, remain adequately capitalized and able to raise funds in the capital markets, and carry out their housing finance mission. As of December 31, 2019 and 2018, the Corporation owned other equity securities with a readily determinable fair value of approximately $ 1.4 million and $ 0.4 million, respectively. During 2019, the Corporation recognized a marked-to-market gain of $ 0.4 thousand associated with these securities (marked-to-market losses of $9 thousand for 2018) recorded as part of other non-interest income in the consolidated statements of income. In addition, the Corporation had other equity securities that do not have a readily-determinable fair value. The carrying value of such securities as of December 31, 2019 and December 31, 2018 was $ 2.8 million and $ 2.2 million, respectively.

INTEREST AND DIVIDEND ON INVEST

INTEREST AND DIVIDEND ON INVESTMENTS	12 Months Ended
	Dec. 31, 2019
Investment Income, Interest and Dividend [Abstract]
Interest and Dividend on Investments [Text Block]	The following provides information about interest on investments, interest-bearing cash accounts, and FHLB dividend income: Year Ended December 31, 2019 2018 2017 (In thousands) MBS: Taxable $ 7,812 $ 8,688 $ 9,656 Exempt (1) 29,232 27,741 24,575 37,044 36,429 34,231 Puerto Rico government obligations, U.S. Treasury securities, and U.S. government agencies: Taxable 165 470 2,091 Exempt (1) 19,623 20,582 12,690 19,788 21,052 14,781 Other investment securities (including FHLB dividends) Taxable 2,714 2,743 2,113 Total interest income on investment securities 59,546 60,224 51,125 Interest on money market investments and interest-bearing cash accounts: Taxable 13,205 10,863 4,609 Exempt 148 233 5 Total interest income on money market investments and interest-bearing cash accounts 13,353 11,096 4,614 Total interest and dividend income on investment securities, money market investments, and interest-bearing cash accounts $ 72,899 $ 71,320 $ 55,739 (1) Primarily MBS and government obligations held by International Banking Entities (as defined in the International Baking Entity Act of Puerto Rico), whose interest income and sales is exempt from Puerto Rico income taxation under that act. The following table summarizes the components of interest and dividend income on investments: Year Ended December 31, 2019 2018 2017 (In thousands) Interest income on investment securities, money market investments, and interest-bearing cash accounts $ 70,217 $ 68,592 $ 53,634 Dividends on FHLB stock 2,682 2,728 2,105 Total interest income and dividends on investments $ 72,899 $ 71,320 $ 55,739

LOANS HELD FOR INVESTMENT

LOANS HELD FOR INVESTMENT	12 Months Ended
	Dec. 31, 2019
Receivables [Abstract]
Loans, Notes, Trade and Other Receivables, Excluding Allowance for Credit Losses [Text Block]	NOTE 9 – LOANS HELD FOR INVESTMENT The following provides information about the loan portfolio held for investment: As of December 31, As of December 31, 2019 2018 (In thousands) Residential mortgage loans, mainly secured by first mortgages $ 2,933,773 $ 3,163,208 Commercial loans: Construction loans 111,317 79,429 Commercial mortgage loans 1,444,586 1,522,662 Commercial and Industrial loans (1) 2,230,876 2,148,111 Total commercial loans 3,786,779 3,750,202 Finance leases 414,532 333,536 Consumer loans 1,867,121 1,611,177 Loans held for investment 9,002,205 8,858,123 Allowance for loan and lease losses ( 155,139) ( 196,362) Loans held for investment, net $ 8,847,066 $ 8,661,761 As of December 31, 2019 and 2018, includes $ 719.0 million and $ 796.8 million, respectively, of commercial loans that were secured by real estate but are not dependent upon the real estate for repayment. As of December 31, 2019, and 2018, the Corporation had net deferred origination costs on its loan portfolio amounting to $ 9.2 million and $ 5.6 million, respectively. The total loan portfolio is net of unearned income of $ 63.8 million and $ 51.3 million as of December 31, 2019 and 2018, respectively. As of December 31, 2019, the Corporation was servicing residential mortgage loans owned by others aggregating $ 3.1 billion (2018 — $ 2.9 billion), and commercial loan participations owned by others amounting to $ 267.6 million as of December 31, 2019 (2018 — $ 273.4 million). Various loans, mainly secured by first mortgages, were assigned as collateral for CDs, individual retirement accounts, and advances from the FHLB. Total loans pledged as collateral amounted to $ 1.8 billion and $ 1.9 billion as of December 31, 2019 and 2018, respectively. Loans held for investment on which accrual of interest income had been discontinued were as follows: As of As of December 31, December 31, 2019 2018 (In thousands) Nonaccrual loans: Residential mortgage $ 121,408 $ 147,287 Commercial mortgage 40,076 109,536 Commercial and Industrial 18,773 30,382 Construction: Land 2,743 6,260 Construction-commercial 6,035 - Construction-residential 1,004 2,102 Consumer: Auto loans 12,220 11,212 Finance leases 1,354 1,329 Other consumer loans 7,055 7,865 Total nonaccrual loans held for investment (1)(2)(3) $ 210,668 $ 315,973 Excludes $ 16.1 million of nonaccrual loans held for sale as of December 31, 2018. Amount excludes PCI loans with a carrying value of approximately $ 136.7 million and $ 146.6 million as of December 31, 2019 and 2018, respectively, primarily mortgage loans acquired from Doral Bank in the first quarter of 2015 and from Doral Financial in the second quarter of 2014, as further discussed below. These loans are not considered nonaccrual due to the application of the accretion method, under which these loans will accrete interest income over the remaining life of the loans using an estimated cash flow analysis. Nonaccrual loans exclude $ 398.3 million and $ 478.9 million of TDR loans that were in compliance with modified terms and in accrual status as of December 31, 2019 and 2018, respectively. If these nonaccrual loans were accruing interest, the additional interest income realized in 2019 would have been $ 13.9 million (2018— $ 21.4 million; 2017 — $ 35.2 million). As of December 31, 2019, the recorded investment of residential mortgage loans collateralized by residential real estate property that were in the process of foreclosure amounted to $ 159.6 million, including $ 39.4 million of loans insured by the FHA or guaranteed by the VA, and $ 18.7 million of PCI loans. The Corporation commences the foreclosure process on residential real estate loans when a borrower becomes 120 days delinquent in accordance with the requirements of the CFPB. Foreclosure procedures and timelines vary depending on whether the property is located in a judicial or non-judicial state. Judicial states ( i.e. , Puerto Rico, Florida and the USVI) require the foreclosure to be processed through the state’s court while foreclosure in non-judicial states ( i.e. , the BVI) is processed without court intervention. Foreclosure timelines vary according to local jurisdiction law and investor guidelines. Occasionally, foreclosures may be delayed due to, among other reasons, mandatory mediations, bankruptcy, court delays and title issues. The Corporation’s aging of the loans held for investment portfolio is as follows: As of December 31, 2019 30-59 Days Past Due 60-89 Days Past Due 90 days or more Past Due (1) Total Past Due Purchased Credit-Impaired Loans Current Total loans held for investment 90 days past due and still accruing (In thousands) Residential mortgage: FHA/VA government-guaranteed loans (2) (3) (4) $ - $ 2,068 $ 81,140 $ 83,208 $ - $ 40,701 $ 123,909 $ 81,140 Other residential mortgage loans (2) (4) - 77,971 136,598 214,569 133,744 2,461,551 2,809,864 15,190 Commercial: Commercial and Industrial loans 1,785 105 25,834 27,724 - 2,203,152 2,230,876 7,061 Commercial mortgage loans (4) - 3,551 40,278 43,829 2,956 1,397,801 1,444,586 202 Construction: Land (4) - 105 2,743 2,848 - 13,645 16,493 - Construction-commercial - - 6,035 6,035 - 79,488 85,523 - Construction-residential - - 1,004 1,004 - 8,297 9,301 - Consumer: Auto loans 36,433 8,539 12,220 57,192 - 1,077,663 1,134,855 - Finance leases 6,501 1,402 1,354 9,257 - 405,275 414,532 - Other consumer loans 10,921 5,757 11,466 28,144 - 704,122 732,266 4,411 Total loans held for investment $ 55,640 $ 99,498 $ 318,672 $ 473,810 $ 136,700 $ 8,391,695 $ 9,002,205 $ 108,004 Includes nonaccrual loans and accruing loans that were contractually delinquent 90 days or more ( i.e ., FHA/VA guaranteed loans and credit cards). Credit card loans continue to accrue finance charges and fees until charged-off at 180 days. It is the Corporation's policy to report delinquent residential mortgage loans insured by the FHA, guaranteed by the VA, and other government-insured loans as past-due loans 90 days and still accruing as opposed to nonaccrual loans since the principal repayment is insured. The Corporation continues accruing interest on these loans until they have passed the 15 months delinquency mark, taking into consideration the FHA interest curtailment process. These balances include $ 37.9 million of residential mortgage loans insured by the FHA that were over 15 months delinquent. As of December 31, 2019, includes $ 35.6 million of defaulted loans collateralizing GNMA securities for which the Corporation has an unconditional option (but not an obligation) to repurchase the defaulted loans. According to the Corporation's delinquency policy and consistent with the instructions for the preparation of the Consolidated Financial Statements for Bank Holding Companies (FR Y-9C) required by the Federal Reserve Board, residential mortgage, commercial mortgage, and construction loans are considered past due when the borrower is in arrears on two or more monthly payments . FHA/VA government-guaranteed loans, other residential mortgage loans, commercial mortgage loans, and land loans past due 30-59 days as of December 31, 2019 amounted to $ 7.1 million, $ 105.1 million, $ 6.6 million, and $ 0.1 million respectively. As of December 31, 2018 30-59 Days Past Due 60-89 Days Past Due 90 days or more Past Due (1) Total Past Due Purchased Credit-Impaired Loans Current Total loans held for investment 90 days past due and still accruing (In thousands) Residential mortgage: FHA/VA government-guaranteed loans (2) (3) (4) $ - $ 4,183 $ 104,751 $ 108,934 $ - $ 38,271 $ 147,205 $ 104,751 Other residential mortgage loans (2) (4) - 62,077 161,851 223,928 143,176 2,648,899 3,016,003 14,564 Commercial: Commercial and Industrial loans 2,550 66 35,385 38,001 - 2,110,110 2,148,111 5,003 Commercial mortgage loans (4) - 1,038 110,482 111,520 3,464 1,407,678 1,522,662 946 Construction: Land (4) - 207 6,327 6,534 - 13,779 20,313 67 Construction-commercial (4) - - - - - 47,965 47,965 - Construction-residential (4) - - 2,102 2,102 - 9,049 11,151 - Consumer: Auto loans 31,070 7,103 11,212 49,385 - 897,091 946,476 - Finance leases 5,502 1,362 1,329 8,193 - 325,343 333,536 - Other consumer loans 9,898 4,542 11,617 26,057 - 638,644 664,701 3,752 Total loans held for investment $ 49,020 $ 80,578 $ 445,056 $ 574,654 $ 146,640 $ 8,136,829 $ 8,858,123 $ 129,083 Includes nonaccrual loans and accruing loans that were contractually delinquent 90 days or more ( i.e. , FHA/VA guaranteed loans and credit cards). Credit card loans continue to accrue finance charges and fees until charged-off at 180 days. It is the Corporation's policy to report delinquent residential mortgage loans insured by the FHA, guaranteed by the VA, and other government-insured loans as past-due loans 90 days and still accruing as opposed to nonaccrual loans since the principal repayment is insured. The Corporation continues accruing interest on these loans until they have passed the 15 months delinquency mark, taking into consideration the FHA interest curtailment process. These balances include $ 51.4 million of residential mortgage loans insured by the FHA that were over 15 months delinquent. As of December 31, 2018, includes $ 43.6 million of defaulted loans collateralizing GNMA securities for which the Corporation has an unconditional option (but not an obligation) to repurchase the defaulted loans. According to the Corporation's delinquency policy and consistent with the instructions for the preparation of the Consolidated Financial Statements for Bank Holding Companies (FR Y-9C) required by the Federal Reserve Board, residential mortgage, commercial mortgage, and construction loans are considered past due when the borrower is in arrears on two or more monthly payments. FHA/VA government-guaranteed loans, other residential mortgage loans, commercial mortgage loans, and land loans past due 30-59 days as of December 31, 2018 amounted to $ 5.6 million, $ 101.4 million, $ 5.1 million, and $ 0.2 million, respectively. The Corporation’s commercial and construction loans by credit quality indicators as of December 31, 2019 and 2018 are set forth below: Commercial Credit Exposure-Credit Risk Profile Based on Creditworthiness Category: Special Mention Substandard Doubtful Loss Total Criticized Assets Total Portfolio December 31, 2019 (In thousands) Commercial mortgage $ 13,080 $ 175,838 $ - $ - $ 188,918 $ 1,444,586 Construction: Land - 5,527 - - 5,527 16,493 Construction-commercial - 6,035 - - 6,035 85,523 Construction-residential - 1,004 - - 1,004 9,301 Commercial and Industrial 39,327 29,031 2,768 249 71,375 2,230,876 Total $ 52,407 $ 217,435 $ 2,768 $ 249 $ 272,859 $ 3,786,779 Commercial Credit Exposure-Credit Risk Profile Based on Creditworthiness Category: Special Mention Substandard Doubtful Loss Total Criticized Assets (1) Total Portfolio December 31, 2018 (In thousands) Commercial mortgage $ 172,260 $ 276,935 $ 1,701 $ - $ 450,896 $ 1,522,662 Construction: Land - 7,407 - - 7,407 20,313 Construction-commercial - - - - - 47,965 Construction-residential - 2,102 - - 2,102 11,151 Commercial and Industrial 85,557 45,274 6,114 396 137,341 2,148,111 Total $ 257,817 $ 331,718 $ 7,815 $ 396 $ 597,746 $ 3,750,202 Excludes $ 16.1 million of nonaccrual loans held for sale ($ 11.4 million commercial mortgage, $ 3.0 million construction-commercial, and $ 1.7 million commercial and industrial) as of December 31, 2018. The Corporation considers a loan as a criticized asset if its risk rating is Special Mention, Substandard, Doubtful, or Loss. These categories are defined as follows: Special Mention – A Special Mention asset has potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the asset or in the Corporation’s credit position at some future date. Special Mention assets are not adversely classified and do not expose the Corporation to sufficient risk to warrant adverse classification. Substandard – A Substandard asset is inadequately protected by the current sound worth and paying capacity of the obligor or of the collateral pledged, if any. Assets so classified must have a well-defined weakness or weaknesses that jeopardize the liquidation of the debt. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Doubtful – Doubtful classifications have all of the weaknesses inherent in those classified Substandard with the added characteristic that the weaknesses make collection or liquidation in full highly questionable and improbable on the basis of currently known facts, conditions and values. A Doubtful classification may be appropriate in cases where significant risk exposures are perceived, but loss cannot be determined because of specific reasonable pending factors, which may strengthen the credit in the near term. Loss – Assets classified as Loss are considered uncollectible and of such little value that their continuance as bankable assets is not warranted. This classification does not mean that the asset has absolutely no recovery or salvage value, but, rather, that it is not practical or desirable to defer writing off this asset even though partial recovery may occur in the future. There is little or no prospect for near term improvement and no realistic strengthening action of significance pending. The Corporation periodically reviews its loan classifications to evaluate if loans are properly classified, and to determine impairment, if any. The frequency of these reviews depends on the amount of the aggregate outstanding debt, and the risk rating classification of the obligor. In addition, during the renewal and annual review process of applicable credit facilities, the Corporation evaluates the corresponding loan grades. The Corporation has a Loan Review Group that reports directly to the Risk Management Committee of the Corporation’s Board of Directors and administratively to the Chief Risk Officer and performs annual comprehensive credit process reviews of the Bank’s commercial portfolios. This group evaluates the credit risk profile of portfolios, including the assessment of the risk rating representative of the current credit quality of the loans, and the evaluation of collateral documentation. The monitoring performed by this group contributes to the assessment of compliance with credit policies and underwriting standards, the determination of the current level of credit risk, the evaluation of the effectiveness of the credit management process and the identification of any deficiency that may arise in the credit-granting process. Based on its findings, the Loan Review Group recommends corrective actions, if necessary, that help maintain a sound credit process. The Loan Review Group reports the results of the credit process reviews to the Risk Management Committee. The Corporation’s residential and consumer loans by credit quality indicators as of December 31, 2019 and 2018 are summarized below: December 31, 2019 Residential and Consumer Credit Exposure-Credit Risk Profile Based on Payment Activity Residential Real-Estate Consumer FHA/VA/ Guaranteed (1) Other residential loans Auto Finance Leases Other Consumer (In thousands) Performing $ 123,909 $ 2,554,712 $ 1,122,635 $ 413,178 $ 725,211 Purchased Credit-Impaired (2) - 133,744 - - - Nonaccrual - 121,408 12,220 1,354 7,055 Total $ 123,909 $ 2,809,864 $ 1,134,855 $ 414,532 $ 732,266 December 31, 2018 Residential and Consumer Credit Exposure-Credit Risk Profile Based on Payment Activity Residential Real-Estate Consumer FHA/VA/ Guaranteed (1) Other residential loans Auto Finance Leases Other Consumer (In thousands) Performing $ 147,205 $ 2,725,540 $ 935,264 $ 332,207 $ 656,836 Purchased Credit-Impaired (2) - 143,176 - - - Nonaccrual - 147,287 11,212 1,329 7,865 Total $ 147,205 $ 3,016,003 $ 946,476 $ 333,536 $ 664,701 It is the Corporation's policy to report delinquent residential mortgage loans insured by the FHA, guaranteed by the VA, and other government-insured loans as 90 days past-due loans and still accruing as opposed to nonaccrual loans since the principal repayment is insured. This balance includes $ 37.9 million and $ 51.4 million of residential mortgage loans insured by the FHA that were over 15 months delinquent, and were no longer accruing interest as of December 31, 2019 and 2018, respectively, taking into consideration the FHA interest curtailment process. PCI loans are excluded from nonaccrual statistics due to the application of the accretion method, under which these loans accrete interest income over the remaining life of the loans using estimated cash flow analyses. The following tables present, as of the indicated dates, information about impaired loans held for investment, excluding PCI loans, which are reported separately, as discussed below: Impaired Loans Impaired Loans Impaired Loans - With a Related Specific Allowance With No Related Specific Allowance Impaired Loans Total Recorded Investment (1) Unpaid Principal Balance Related Specific Allowance Recorded Investment (1) Unpaid Principal Balance Recorded Investment (1) Unpaid Principal Balance Related Specific Allowance (In thousands) As of December 31, 2019 FHA/VA-Guaranteed loans $ - $ - $ - $ - $ - $ - $ - $ - Other residential mortgage loans 265,280 288,663 17,037 111,960 158,063 377,240 446,726 17,037 Commercial: Commercial mortgage loans 34,437 43,936 6,788 44,120 48,195 78,557 92,131 6,788 Commercial and Industrial loans 49,324 86,762 7,123 27,209 31,360 76,533 118,122 7,123 Construction: Land 2,034 2,404 528 1,883 2,530 3,917 4,934 528 Construction-commercial 6,035 6,035 279 - - 6,035 6,035 279 Construction-residential 514 514 13 956 1,531 1,470 2,045 13 Consumer: Auto loans 14,460 14,446 3,438 79 155 14,539 14,601 3,438 Finance leases 1,533 1,711 80 - - 1,533 1,711 80 Other consumer loans 8,243 8,591 829 1,105 3,832 9,348 12,423 829 $ 381,860 $ 453,062 $ 36,115 $ 187,312 $ 245,666 $ 569,172 $ 698,728 $ 36,115 (1) Excluding accrued interest receivable. Impaired Loans Impaired Loans - With a Related Specific Allowance With No Related Specific Allowance Impaired Loans Total Recorded Investment (1) Unpaid Principal Balance Related Specific Allowance Recorded Investment (1) Unpaid Principal Balance Recorded Investment (1) Unpaid Principal Balance Related Specific Allowance (In thousands) As of December 31, 2018 FHA/VA-Guaranteed loans $ - $ - $ - $ - $ - $ - $ - $ - Other residential mortgage loans 293,494 325,897 19,965 110,238 148,920 403,732 474,817 19,965 Commercial: Commercial mortgage loans 184,068 201,116 17,684 43,358 49,253 227,426 250,369 17,684 Commercial and Industrial loans 61,162 76,027 9,693 30,030 48,085 91,192 124,112 9,693 Construction: Land 2,444 2,923 552 2,431 2,927 4,875 5,850 552 Construction-commercial - - - - - - - - Construction-residential 1,718 2,370 208 - - 1,718 2,370 208 Consumer: Auto loans 17,781 17,781 3,689 250 250 18,031 18,031 3,689 Finance leases 1,914 1,914 102 22 22 1,936 1,936 102 Other consumer loans 9,291 10,066 2,083 2,068 2,750 11,359 12,816 2,083 $ 571,872 $ 638,094 $ 53,976 $ 188,397 $ 252,207 $ 760,269 $ 890,301 $ 53,976 (1) Excluding accrued interest receivable. Impaired Loans Average Recorded Investment (1) Interest Income on Accrual Basis Interest Income on Cash Basis Total Interest Income (In thousands) Year Ended December 31, 2019 FHA/VA-Guaranteed loans $ - $ - $ - $ - Other residential mortgage loans 385,160 17,038 907 17,945 Commercial: Commercial mortgage loans 80,846 1,916 156 2,072 Commercial and Industrial loans 82,526 3,673 113 3,786 Construction: Land 4,258 85 28 113 Construction-commercial 6,036 - - - Construction-residential 1,482 21 - 21 Consumer: Auto loans 16,832 1,084 - 1,084 Finance leases 1,815 136 - 136 Other consumer loans 10,453 824 131 955 $ 589,408 $ 24,777 $ 1,335 $ 26,112 (1) Excluding accrued interest receivable. Average Recorded Investment (1) Interest Income on Accrual Basis Interest Income on Cash Basis Total Interest Income (In thousands) Year Ended December 31, 2018 FHA/VA-Guaranteed loans $ - $ - $ - $ - Other residential mortgage loans 411,730 18,131 1,376 19,507 Commercial: Commercial mortgage loans 233,372 4,434 2,135 6,569 Commercial and Industrial loans 99,050 2,530 9 2,539 Construction: Land 5,025 93 26 119 Construction-commercial - - - - Construction-residential 1,724 - - - Consumer: Auto loans 20,156 1,449 - 1,449 Finance leases 2,197 145 - 145 Other consumer loans 12,177 913 164 1,077 $ 785,431 $ 27,695 $ 3,710 $ 31,405 (1) Excluding accrued interest receivable. Average Recorded Investment (1) Interest Income on Accrual Basis Interest Income on Cash Basis Total Interest Income (In thousands) Year Ended December 31, 2017 FHA/VA-Guaranteed loans $ - $ - $ - $ - Other residential mortgage loans 438,847 17,316 2,478 19,794 Commercial: Commercial mortgage loans 180,283 1,983 390 2,373 Commercial and Industrial loans 121,233 1,447 403 1,850 Construction: Land 14,174 372 38 410 Construction-commercial 35,996 - - - Construction-residential 252 - - - Consumer: Auto loans 24,618 1,781 - 1,781 Finance leases 2,428 168 - 168 Other consumer loans 14,324 1,176 144 1,320 $ 832,155 $ 24,243 $ 3,453 $ 27,696 (1) Excluding accrued interest receivable. The following table shows the activity for impaired loans for 2019, 2018 and 2017: 2019 2018 2017 (In thousands) Impaired Loans: Balance at beginning of year $ 760,269 $ 790,308 $ 887,905 Loans determined impaired during the year 52,639 250,524 140,977 Charge-offs (1) ( 37,806) ( 57,152) ( 82,113) Loans sold, net of charge-offs - ( 4,121) ( 53,245) Increases to existing impaired loans 1,928 7,335 8,292 Foreclosures ( 25,310) ( 36,453) ( 37,513) Loans no longer considered impaired ( 3,355) ( 5,417) ( 3,526) Loans transferred to held for sale - ( 74,052) - Paid in full, partial payments and other ( 179,193) ( 110,703) ( 70,469) Balance at end of year $ 569,172 $ 760,269 $ 790,308 For the year ended December 31, 2018, includes charge-offs totaling $ 22.2 million associated with the $ 74.4 million in nonaccrual loans transferred to held for sale. For the year ended December 31, 2017, includes a charge-off of $ 10.7 million related to the sale of a $ 64 million loan extended to PREPA. PCI Loans The Corporation acquired PCI loans accounted for under ASC Topic 310-30, “Receivables – Loans and Debt Securities Acquired with Deteriorated Credit Quality” (“ASC Topic 310-30”), as part of a transaction that closed on February 27, 2015 in which FirstBank acquired 10 Puerto Rico branches of Doral Bank, acquired certain assets, including PCI loans, and assumed deposits, through an alliance with Banco Popular of Puerto Rico, which was the successful lead bidder with the FDIC on the failed Doral Bank, as well as other co-bidders. The Corporation also acquired PCI loans in previously completed asset acquisitions that are accounted for under ASC Topic 310-30. These previous transactions include the acquisition from Doral Financial in the second quarter of 2014 of all of its rights, title and interest in first and second residential mortgage loans in full satisfaction of secured borrowings owed by such entity to FirstBank. Under ASC Topic 310-30, the acquired PCI loans were aggregated into pools based on similar characteristics ( e.g. , delinquency status and loan terms). Each loan pool is accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows. Since the loans are accounted for under ASC Topic 310-30, they are not considered nonaccrual and will continue to have an accretable yield as long as there is a reasonable expectation about the timing and amount of cash flows expected to be collected. The Corporation recognizes additional losses on this portfolio when it is probable that the Corporation will be unable to collect all cash flows expected as of the acquisition date. The carrying amounts of PCI loans were as follows as of December 31, 2019 and 2018: As of As of December 31, December 31, 2019 2018 (In thousands) Residential mortgage loans $ 133,744 $ 143,176 Commercial mortgage loans 2,956 3,464 Total PCI loans $ 136,700 $ 146,640 Allowance for loan losses ( 11,434) ( 11,354) Total PCI loans, net of allowance for loan losses $ 125,266 $ 135,286 The following tables present PCI loans by past due status as of December 31, 2019 and 2018: As of December 31, 2019 30-59 Days 60-89 Days 90 days or more Total Past Due Total PCI loans Current (In thousands) Residential mortgage loans $ - $ 7,530 $ 25,018 $ 32,548 $ 101,196 $ 133,744 Commercial mortgage loans - - 2,020 2,020 936 2,956 Total (1) $ - $ 7,530 $ 27,038 $ 34,568 $ 102,132 $ 136,700 As of December 31, 2018 30-59 Days 60-89 Days 90 days or more Total Past Due Total PCI loans Current (In thousands) Residential mortgage loans $ - $ 6,979 $ 26,932 $ 33,911 $ 109,265 $ 143,176 Commercial mortgage loans - - 2,512 2,512 952 3,464 Total (1) $ - $ 6,979 $ 29,444 $ 36,423 $ 110,217 $ 146,640 According to the Corporation's delinquency policy and consistent with the instructions for the preparation of the Consolidated Financial Statements for Bank Holding Companies (FR Y-9C) required by the Federal Reserve Board, residential mortgage and commercial mortgage loans are considered past due when the borrower is in arrears two or more monthly payments. PCI residential mortgage loans past due 30-59 days as of December 31, 2019 and 2018 amounted to $ 11.2 million and $ 11.6 million, respectively. No PCI commercial mortgage loans were 30-59 days past due as of December 31, 2019 and 2018. Initial Fair Value and Accretable Yield of PCI Loans At acquisition of the PCI loans, the Corporation estimated the cash flows the Corporation expected to collect on the loans. Under the accounting guidance for PCI loans, the difference between the contractually required payments and the cash flows expected to be collected at acquisition is referred to as the non-accretable difference. This difference is neither accreted into income nor recorded on the Corporation’s consolidated statements of financial condition. The excess of cash flows expected to be collected over the estimated fair value is referred to as the accretable yield and is recognized in interest income over the remaining life of the loans, using the effective-yield method. Changes in Accretable Yield of Acquired PCI Loans Subsequent to the acquisition of PCI loans, the Corporation is required to periodically evaluate its estimate of cash flows expected to be collected. These evaluations, performed quarterly, require the continued use of key assumptions and estimates, similar to the initial estimate of fair value. Subsequent changes in the estimated cash flows expected to be collected may result in changes in the accretable yield and non-accretable difference or reclassifications from non-accretable yield to accretable yield. Increases in the cash flows expected to be collected will generally result in an increase in interest income over the remaining life of the loan or pool of loans. Decreases in expected cash flows due to further credit deterioration will generally result in an impairment charge recognized in the Corporation’s provision for loan and lease losses, resulting in an increase to the allowance for loan and lease losses. As of each December 31, 2019 and 2018, the reserve related to PCI loans amounted to $ 11.4 million. Changes in the accretable yield of PCI loans for the years ended December 31, 2019, 2018 and 2017 were as follows: December 31, 2019 December 31, 2018 December 31, 2017 (In thousands) Balance at beginning of year $ 93,493 $ 103,682 $ 116,462 Accretion recognized in earnings ( 9,370) ( 10,189) ( 10,810) Reclassification (to) from non-accretable - - ( 1,970) Balance at end of year $ 84,123 $ 93,493 $ 103,682 Changes in the carrying amount of PCI loans accounted for pursuant to ASC Topic 310-30 were as follows: Year ended Year ended December 31, 2019 December 31, 2018 (In thousands) Balance at beginning of year $ 146,640 $ 158,174 Accretion 9,370 10,189 Collections ( 15,645) ( 16,749) Foreclosures ( 3,665) ( 4,974) Ending balance $ 136,700 $ 146,640 Allowance for loan losses ( 11,434) ( 11,354) Ending balance, net of allowance for loan losses $ 125,266 $ 135,286 Changes in the allowance for loan losses related to PCI loans were as follows: Year ended December 31, 2019 December 31, 2018 Balance at beginning of year $ 11,354 $ 11,251 Provision for loan losses 80 103 Balance at end of period $ 11,434 $ 11,354 The outstanding principal balance of PCI loans, including amounts charged off by the Corporation, amounted to $ 167.9 million as of December 31, 2019 (2018 - $ 181.1 million). Purchases and Sales of Loans During 2019, the Corporation purchased $ 18.8 million of residential mortgage loans as part of a strategic program to purchase ongoing residential mortgage loan production from mortgage bankers in Puerto Rico, compared to purchases of $ 46.1 million in 2018 and $ 58.9 million in 2017. In general, the loans purchased from mortgage bankers were conforming residential mortgage loans. Purchases of conforming residential mortgage loans provide the Corporation the flexibility to retain or sell the loans, including through securitization transactions, depending upon the Corporation’s interest rate risk management strategies. When the Corporation sells such loans, it generally keeps the servicing of the loans. In addition, during 2019, 2018, and 2017, the Corporation purchased commercial and industrial loan participations of $ 20.0 million, $ 21.4 million, and $ 52.6 million, respectively. In the ordinary course of business, the Corporation sells residential mortgage loans (originated or purchased) to GNMA and GSEs, such as FNMA and FHLMC, which generally securitize the transferred loans into MBS for sale into the secondary market. During 2019, the Corporation sold $ 235.3 million of FHA/VA mortgage loans to GNMA, which packaged them into MBS, compared to sales of $ 233.2 million in 2018 and $ 235.1 million in 2017. Also, during 2019, the Corporation sold approximately $ 138.7 million of performing residential mortgage loans to FNMA and FHLMC, compared to sales of $ 104.9 million in 2018 and $ 87.5 million in 2017. The Corporation’s continuing involvement in these sold loans consists primarily of servicing the loans. In addition, the Corporation agreed to repurchase loans if it breaches any of the representations and warranties included in the sale agreement. These representations and warranties are consistent with the GSEs’ selling and servicing guidelines ( i.e. , ensuring that the mortgage was properly underwritten according to established guidelines). For loans sold to GNMA, the Corporation holds an option to repurchase individual delinquent loans issued on or after January 1, 2003 when the borrower fails to make any payment for three consecutive months. This option gives the Corporation the ability, but not the obligation, to repurchase the delinquent loans at par without prior authorization from GNMA. Under ASC Topic 860, “Transfer and Servicing”, once the Corporation has the unilateral ability to repurchase the delinquent loan, it is considered to have regained effective control over the loan and is required to recognize the loan and a corresponding repurchase liability on the balance sheet regardless of the Corporation’s intent to repurchase the loan. As of December 31, 2019 and 2018, rebooked GNMA delinquent loans included in the residential mortgage loan portfolio amounted to $ 35.6 million and $ 43.6 million, respectively. During 2019, 2018, and 2017, the Corporation repurchased, pursuant to its repurchase option with GNMA, $ 33.5 million, $ 49.1 million, and $ 25.1 million, respectively, of loans previously sold to GNMA. The principal balance of these loans is fully guaranteed and the risk of loss related to the repurchased loans is generally limited to the difference between the delinquent interest payment advanced to GNMA, which is computed at the loan’s interest rate, and the interest payments reimbursed by FHA, which are computed at a pre-determined debenture rate. Repurchases of GNMA loans allow the Corporation, among other things, to maintain acceptable delinquency rates on outstanding GNMA pools and remain as a seller and servicer in good standing with GNMA. Historically, losses for violations of representations and warranties, and on optional repurchases of GNMA delinquent loans, have been immaterial and no provision has been made at the time of sale. Loan sales to FNMA and FHLMC are without recourse in relation to the future

ALLOWANCE FOR LOAN AND LEASE LO

ALLOWANCE FOR LOAN AND LEASE LOSSES	12 Months Ended
	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Abstract]
ALLOWANCE FOR LOAN AND LEASE LOSSES [Text Block]	NOTE 10 – ALLOWANCE FOR LOAN AND LEASE LOSSES The changes in the allowance for loan and lease losses were as follows for the indicated periods: Residential Commercial Commercial and Construction Consumer Year Ended December 31, 2019 Mortgage Loans Mortgage Loans Industrial Loans Loans Loans Total (In thousands) Allowance for loan and lease losses: Beginning balance $ 50,794 $ 55,581 $ 32,546 $ 3,592 $ 53,849 $ 196,362 Charge-offs ( 22,742) ( 15,088) ( 7,206) ( 391) ( 52,160) ( 97,587) Recoveries 2,663 398 3,554 665 8,859 16,139 Provision (release) 14,091 ( 1,697) ( 13,696) ( 1,496) 43,023 40,225 Ending balance $ 44,806 $ 39,194 $ 15,198 $ 2,370 $ 53,571 $ 155,139 Ending balance: specific reserve for impaired loans $ 17,037 $ 6,788 $ 7,123 $ 820 $ 4,347 $ 36,115 Ending balance: PCI loans (1) $ 11,063 $ 371 $ - $ - $ - $ 11,434 Ending balance: general allowance $ 16,706 $ 32,035 $ 8,075 $ 1,550 $ 49,224 $ 107,590 Loans held for investment: Ending balance $ 2,933,773 $ 1,444,586 $ 2,230,876 $ 111,317 $ 2,281,653 $ 9,002,205 Ending balance: impaired loans $ 377,240 $ 78,557 $ 76,533 $ 11,422 $ 25,420 $ 569,172 Ending balance: PCI loans $ 133,744 $ 2,956 $ - $ - $ - $ 136,700 Ending balance: loans with general allowance $ 2,422,789 $ 1,363,073 $ 2,154,343 $ 99,895 $ 2,256,233 $ 8,296,333 Residential Commercial Commercial and Construction Consumer Year Ended December 31, 2018 Mortgage Loans Mortgage Loans Industrial Loans Loans Loans Total (In thousands) Allowance for loan and lease losses: Beginning balance $ 58,975 $ 48,493 $ 48,871 $ 4,522 $ 70,982 $ 231,843 Charge-offs (2) ( 24,775) ( 23,911) ( 9,704) ( 8,296) ( 50,106) ( 116,792) Recoveries 3,392 7,925 1,819 334 8,588 22,058 Provision (release) (2) 13,202 23,074 ( 8,440) 7,032 24,385 59,253 Ending balance $ 50,794 $ 55,581 $ 32,546 $ 3,592 $ 53,849 $ 196,362 Ending balance: specific reserve for impaired loans $ 19,965 $ 17,684 $ 9,693 $ 760 $ 5,874 $ 53,976 Ending balance: PCI loans (1) $ 10,954 $ 400 $ - $ - $ - $ 11,354 Ending balance: general allowance $ 19,875 $ 37,497 $ 22,853 $ 2,832 $ 47,975 $ 131,032 Loans held for investment: Ending balance $ 3,163,208 $ 1,522,662 $ 2,148,111 $ 79,429 $ 1,944,713 $ 8,858,123 Ending balance: impaired loans $ 403,732 $ 227,426 $ 91,192 $ 6,593 $ 31,326 $ 760,269 Ending balance: PCI loans $ 143,176 $ 3,464 $ - $ - $ - $ 146,640 Ending balance: loans with general allowance $ 2,616,300 $ 1,291,772 $ 2,056,919 $ 72,836 $ 1,913,387 $ 7,951,214 Residential Commercial Commercial and Construction Consumer Year Ended December 31, 2017 Mortgage Loans Mortgage Loans Industrial Loans Loans Loans Total (In thousands) Allowance for loan and lease losses: Beginning balance $ 33,980 $ 57,261 $ 61,953 $ 2,562 $ 49,847 $ 205,603 Charge-offs ( 28,186) ( 39,092) ( 19,855) ( 3,607) ( 44,030) ( 134,770) Recoveries 2,437 270 5,755 732 7,562 16,756 Provision 50,744 30,054 1,018 4,835 57,603 144,254 Ending balance $ 58,975 $ 48,493 $ 48,871 $ 4,522 $ 70,982 $ 231,843 Ending balance: specific reserve for impaired loans $ 22,086 $ 9,783 $ 12,359 $ 2,017 $ 5,165 $ 51,410 Ending balance: PCI loans (1) $ 10,873 $ 378 $ - $ - $ - $ 11,251 Ending balance: general allowance $ 26,016 $ 38,332 $ 36,512 $ 2,505 $ 65,817 $ 169,182 Loans held for investment: Ending balance $ 3,290,957 $ 1,614,972 $ 2,083,253 $ 111,397 $ 1,749,897 $ 8,850,476 Ending balance: impaired loans $ 433,434 $ 152,914 $ 118,300 $ 47,266 $ 38,394 $ 790,308 Ending balance: PCI loans loans $ 153,991 $ 4,183 $ - $ - $ - $ 158,174 Ending balance: loans with general allowance $ 2,703,532 $ 1,457,875 $ 1,964,953 $ 64,131 $ 1,711,503 $ 7,901,994 Refer to Note 9 - Loans Held for Investment - PCI Loans, to the consolidated financial statements, for additional information about changes in the allowance for loan losses related to PCI loans. During 2018, the Corporation transferred to held for sale $ 74.4 million (net of fair value write downs of $ 22.2 million) in nonaccrual loans. Approximately $ 6.5 million of the $ 22.2 million in charge-offs recorded on the transfer was taken against previously established reserves for loan losses, resulting in a charge to the provision of $ 15.7 million for the year ended December 31, 2018. Loans transferred to held for sale in 2018 consisted of $ 33.0 million in nonaccrual construction loans (net of fair value write downs of $ 6.7 million), $ 39.6 million in nonaccrual commercial mortgage loans (net of fair value write downs of $ 13.8 million), and $ 1.8 million in nonaccrual commercial and industrial loans (net of fair value write-downs of $ 1.7 million). The tables below present the allowance for loan and lease losses and the carrying value of loans by portfolio segment as of December 31, 2019 and 2018: As of December 31, 2019 Residential Mortgage Loans Commercial Mortgage Loans Commercial and Industrial Loans Consumer Loans Construction Loans (Dollars in thousands) Total Impaired loans without specific reserves: Principal balance of loans, net of charge-offs $ 111,960 $ 44,120 $ 27,209 $ 2,839 $ 1,184 $ 187,312 Impaired loans with specific reserves: Principal balance of loans, net of charge-offs $ 265,280 $ 34,437 $ 49,324 $ 8,583 $ 24,236 $ 381,860 Allowance for loan and lease losses 17,037 6,788 7,123 820 4,347 36,115 Allowance for loan and lease losses to principal balance 6.42 % 19.71 % 14.44 % 9.55 % 17.94 % 9.46 % PCI loans: Carrying value of PCI loans $ 133,744 $ 2,956 - - - $ 136,700 Allowance for PCI loans 11,063 371 - - - 11,434 Allowance for PCI loans to carrying value 8.27 % 12.55 % - - - 8.36 % Loans with general allowance: Principal balance of loans $ 2,422,789 $ 1,363,073 $ 2,154,343 $ 99,895 $ 2,256,233 $ 8,296,333 Allowance for loan and lease losses 16,706 32,035 8,075 1,550 49,224 107,590 Allowance for loan and lease losses to principal balance 0.69 % 2.35 % 0.37 % 1.55 % 2.18 % 1.30 % Total loans held for investment: Principal balance of loans $ 2,933,773 $ 1,444,586 $ 2,230,876 $ 111,317 $ 2,281,653 $ 9,002,205 Allowance for loan and lease losses 44,806 39,194 15,198 2,370 53,571 155,139 Allowance for loan and lease losses to principal balance (1) 1.53 % 2.71 % 0.68 % 2.13 % 2.35 % 1.72 % As of December 31, 2018 Residential Mortgage Loans Commercial Mortgage Loans Commercial and Industrial Loans Consumer Loans Construction Loans (Dollars in thousands) Total Impaired loans without specific reserves: Principal balance of loans, net of charge-offs $ 110,238 $ 43,358 $ 30,030 $ 2,431 $ 2,340 $ 188,397 Impaired loans with specific reserves: Principal balance of loans, net of charge-offs $ 293,494 $ 184,068 $ 61,162 $ 4,162 $ 28,986 $ 571,872 Allowance for loan and lease losses 19,965 17,684 9,693 760 5,874 53,976 Allowance for loan and lease losses to principal balance 6.80 % 9.61 % 15.85 % 18.26 % 20.26 % 9.44 % PCI loans: Carrying value of PCI loans $ 143,176 $ 3,464 - - - $ 146,640 Allowance for PCI loans 10,954 400 - - - 11,354 Allowance for PCI loans to carrying value 7.65 % 11.55 % - - - 7.74 % Loans with general allowance: Principal balance of loans $ 2,616,300 $ 1,291,772 $ 2,056,919 $ 72,836 $ 1,913,387 $ 7,951,214 Allowance for loan and lease losses 19,875 37,497 22,853 2,832 47,975 131,032 Allowance for loan and lease losses to principal balance 0.76 % 2.90 % 1.11 % 3.89 % 2.51 % 1.65 % Total loans held for investment: Principal balance of loans $ 3,163,208 $ 1,522,662 $ 2,148,111 $ 79,429 $ 1,944,713 $ 8,858,123 Allowance for loan and lease losses 50,794 55,581 32,546 3,592 53,849 196,362 Allowance for loan and lease losses to principal balance (1) 1.61 % 3.65 % 1.52 % 4.52 % 2.77 % 2.22 % Loans used in the denominator include PCI loans of $ 136.7 million and $ 146.6 million as of December 31, 2019 and 2018, respectively. However, the Corporation separately tracks and reports PCI loans and excludes these loans from the amounts of nonaccrual loans, impaired loans, TDRs and non-performing assets. During 2019, the Corporation reduced to zero the reserve for unfunded loan commitments (compared to $ 0.4 million as of December 31, 2018). The reserve for unfunded loan commitments is an estimate of the losses inherent in off-balance sheet loan commitments to borrowers that are experiencing financial difficulties at the balance sheet date. It is calculated by multiplying an estimated loss factor by an estimated probability of funding, and then by the period-end amounts for unfunded commitments. The reserve for unfunded loan commitments is included as part of accounts payable and other liabilities in the consolidated statements of financial condition and any changes to the reserve are included as part of other non-interest expenses in the consolidated statements of income. Refer to Note 1, Nature of Business and Summary of Significant Accounting Policies – Recently Issued Accounting Standards Not Yet Effective – Accounting for Financial Instruments – Credit Losses, to the consolidated financial statements, for information about the adoption in 2020 of ASC 326, which replaces the incurred loss methodology with the CECL model to estimate the allowance for credit losses for the remaining estimated life of the financial asset (including loans, debt securities and off-balance sheet credit exposures). Hurricane-Related Qualitative Allowance for Loan and Lease Losses As described in Note 3 – Update on Effects of Natural Disasters, to the consolidated financial statements, two strong hurricanes affected the Corporation’s service areas during September 2017. These hurricanes caused widespread property damage, flooding, power outages, and water and communication service interruptions, and severely disrupted normal economic activity in the affected areas. During the third quarter of 2017, the Corporation recorded a $ 66.5 million charge to the allowance for loan and lease losses related to the establishment of qualitative reserves associated with the effects of Hurricanes Irma and Maria. Refer to Note 1, Nature of Business and Summary of Significant Accounting Policies – Allowance for loan and lease losses, to the consolidated financial statements, for a description of the methodology used to established the hurricane-related qualitative reserves. Subsequently, during 2019 and 2018, the Corporation recorded net loan loss reserve releases of $ 6.4 16.9 5.7 million to the general reserve. Furthermore, approximately $ 10.9 million of consumer loan charge-offs recorded in 2018 were taken against previously-established hurricane-related qualitative reserves. The significant overall uncertainties in the early assessments of hurricane-related credit losses have been largely addressed and the hurricanes’ effect on the credit quality is now reflected in the normal process for determining the allowance for loan and lease losses and not through a separate hurricane-related qualitative reserve.

LOANS HELD FOR SALE

LOANS HELD FOR SALE	12 Months Ended
	Dec. 31, 2019
Receivables Held-for-sale [Abstract]
Loans Held For Sale [Text Block]	NOTE 11 – LOANS HELD FOR SALE The Corporation’s loans held-for-sale portfolio as of the dates indicated was composed of: December 31, 2019 2018 (In thousands) Residential mortgage loans $ 39,477 $ 27,075 Construction loans - 3,015 Commercial and Industrial loans (1) - 1,725 Commercial mortgage loans (1) - 11,371 Total $ 39,477 $ 43,186 (1) During 2019, the Corporation completed the sale of $ 11.4 million in nonaccrual loans held for sale ($ 10.4 million commercial mortgage and $ 1.1 million commercial and industrial).

OTHER REAL ESTATE OWNED

OTHER REAL ESTATE OWNED	12 Months Ended
	Dec. 31, 2019
Real Estate Owned, Disclosure of Detailed Components [Abstract]
Other Real Estate Owned [Text Block]	NOTE 12 – OTHER REAL ESTATE OWNED The following table presents OREO inventory as of the dates indicated: December 31, (In thousands) 2019 2018 OREO OREO balances, carrying value: Residential (1) $ 46,912 $ 49,239 Commercial 47,271 71,838 Construction 7,443 10,325 Total $ 101,626 $ 131,402 (1) Excludes $ 16.7 million and $ 14.4 million as of December 31, 2019 and 2018, respectively, of foreclosures that meet the conditions of ASC Topic 310-40 “Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure,” and are presented as a receivable (other assets) in the consolidated statements of financial condition.

RELATED PARTY TRANSACTIONS

RELATED PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2019
Related Party Transactions [Abstract]
Related Party Transactions [Text Block]	NOTE 13 – RELATED-PARTY TRANSACTIONS The Corporation granted loans to its directors, executive officers, and certain related individuals or entities in the ordinary course of business. The movement and balance of these loans were as follows: Amount (In thousands) Balance at December 31, 2017 $ 1,084 New loans 57 Payments ( 117) Other changes - Balance at December 31, 2018 1,024 New loans 154 Payments ( 146) Other changes - Balance at December 31, 2019 $ 1,032 These loans were made subject to the provisions of the Federal Reserve’s Regulation O-“Loans to Executive Officers, Directors and Principal Shareholders of Member Banks,” which governs the permissible lending relationships between a financial institution and its executive officers, directors, principal shareholders, their families and related parties. Amounts related to changes in the status of those who are considered related parties are reported as other changes in the table above. There were no changes in the status of related parties during 2019 and 2018. From time to time, the Corporation, in the ordinary course of its business, obtains services from related parties or makes contributions to non-profit organizations that have some association with the Corporation.

PREMISES AND EQUIPMENT

PREMISES AND EQUIPMENT	12 Months Ended
	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Property Plant And Equipment Disclosure [Text Block]	NOTE 14 – PREMISES AND EQUIPMENT Premises and equipment comprise: Useful Life In Years As of December 31, Minimum Maximum 2019 2018 (Dollars in thousands) Buildings and improvements 10 35 $ 135,263 $ 131,206 Leasehold improvements 1 10 56,530 54,734 Furniture and equipment 2 10 146,835 176,116 338,628 362,056 Accumulated depreciation and amortization ( 228,712) ( 256,355) 109,916 105,701 Land 22,939 24,640 Projects in progress 17,134 17,473 Total premises and equipment, net $ 149,989 $ 147,814 Depreciation and amortization expense amounted to $ 17.6 million, $ 15.0 million, and $ 16.4 million for the years ended December 31, 2019, 2018, and 2017, respectively. During 2019 and 2018, the Corporation received insurance proceeds of $ 0.6 million and $ 2.0 million, respectively, related to casualty losses incurred at some facilities. The insurance proceeds were recorded against impairment losses. Insurance recoveries in excess of losses amounted to $ 0.1 million and $ 0.5 million for 2019 and 2018, respectively, and were recognized as a gain from insurance proceeds and reported as part of other non-interest income in the consolidated statements of income.

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES	12 Months Ended
	Dec. 31, 2019
Goodwill and other Intangible Assets [Abstract]
GOODWILL AND OTHER INTANGIBLES [Text Block]	NOTE 15 – GOODWILL AND OTHER INTANGIBLES Goodwill as of both December 31, 2019 and 2018 amounted to $ 28.1 million, recognized as part of Other Assets in the consolidated statements of financial condition. The Corporation conducted its annual evaluation of goodwill and other intangibles during the fourth quarter of 2019. The Corporation’s goodwill is related to the Florida reporting unit. The Corporation performed a qualitative assessment in 2019 to test for impairment the goodwill of the Florida reporting unit. This assessment involved identifying the inputs and assumptions that most affects fair value, evaluating the significance of all identified relevant events and circumstances that affect fair value of the reporting entity and weighing such factors to determine if a positive assertion can be made that it is more likely than not that the fair value of the reporting unit is greater than its carrying amount. In 2018, the Corporation bypassed the qualitative assessment and proceeded directly to perform the first step of the two-step goodwill impairment test. The Step 1 evaluation of goodwill allocated to the Florida reporting unit under both valuation approaches (market and discounted cash flow analysis) indicated that the fair value of the unit was above the carrying amount of its equity book value as of the valuation date (October 1); therefore, the completion of Step 2 was not required. Based on the analyses conducted in 2019 and 2018, the Corporation concluded that the goodwill was not impaired, nor was any goodwill written off due to impairment during 2019, 2018, or 2017. In connection with the acquisition of the FirstBank-branded credit card loan portfolio in the second quarter of 2012, the Corporation recognized a purchased credit card relationship intangible of $ 24.5 million ($ 3.6 million as of December 31, 2019 and $ 5.7 million as of December 31, 2018), which is being amortized over the remaining estimated life of 1.9 years on an accelerated basis based on the estimated attrition rate of the purchased credit card accounts, which reflects the Corporation’s estimate that it will realize the economic benefits of the intangible asset as the revenue stream generated by the cardholder relationship is realized. The core deposit intangible of December 31, 2019 of $ 3.5 million (2018 - $ 4.3 million) primarily consists of the core deposit acquired in the February 2015 Doral Bank transaction. In the first quarter of 2016, FirstBank Insurance Agency acquired certain insurance customer accounts and related customer records and recognized an insurance customer relationship intangible of $ 1.1 million ($ 0.5 million as of December 31, 2019 and $ 0.6 million as of December 31. 2018). The acquired accounts have a direct relationship to the previous mortgage loan portfolio acquisitions from Doral Bank and Doral Financial in 2015 and 2014. The following table shows the gross amount and accumulated amortization of the Corporation’s intangible assets recognized as part of Other assets in the consolidated statements of financial condition as of the indicated dates: As of December 31, 2019 2018 (Dollars in thousands) Core deposit intangible: Gross amount $ 51,664 $ 51,664 Accumulated amortization (1) ( 48,176) ( 47,329) Net carrying amount $ 3,488 $ 4,335 Remaining amortization period (in years) 5.1 6.0 Purchased credit card relationship intangible: Gross amount $ 24,465 $ 24,465 Accumulated amortization (2) ( 20,850) ( 18,763) Net carrying amount $ 3,615 $ 5,702 Remaining amortization period (in years) 1.9 2.9 Insurance customer relationship intangible: Gross amount $ 1,067 $ 1,067 Accumulated amortization (3) ( 597) ( 445) Net carrying amount $ 470 $ 622 Remaining amortization period (in years) 3.0 4.0 For the years ended December 31, 2019, 2018 and 2017, the amortization expense of core deposit intangibles amounted to $ 0.8 million, $ 1.1 million and $ 1.7 million, respectively. For the years ended December 31, 2019, 2018 and 2017, the amortization expense of the purchased credit card relationship intangible amounted to $ 2.1 million, $ 2.3 million and $ 2.5 million, respectively. For each of the years ended December 31, 2019, 2018 and 2017, the amortization expense of the insurance customer relationship intangible amounted to $ 0.2 million. The estimated aggregate annual amortization expense related to the intangible assets for future periods is as follows as of December 31, 2019: Amount (In thousands) 2020 $ 2,851 2021 2,656 2022 915 2023 622 2024 457 2025 and after 72

NON-CONSOLIDATED VARIABLE INTER

NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS	12 Months Ended
	Dec. 31, 2019
Transfers and Servicing [Abstract]
NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS [Text Block]	NOTE 16 – NON CONSOLIDATED VARIABLE INTEREST ENTITIES (“VIE”) AND SERVICING ASSETS The Corporation transfers residential mortgage loans in sale or securitization transactions in which it has continuing involvement, including servicing responsibilities and guarantee arrangements. All such transfers have been accounted for as sales as required by applicable accounting guidance. When evaluating the need to consolidate counterparties to which the Corporation has transferred assets, or with which the Corporation has entered into other transactions, the Corporation first determines if the counterparty is an entity for which a variable interest exists. If no scope exception is applicable and a variable interest exists, the Corporation then evaluates whether it is the primary beneficiary of the VIE and whether the entity should be consolidated or not. Below is a summary of transactions with VIEs for which the Corporation has retained some level of continuing involvement: GNMA The Corporation typically transfers first lien residential mortgage loans in conjunction with GNMA securitization transactions in which the loans are exchanged for cash or securities that are readily redeemed for cash proceeds and servicing rights. The securities issued through these transactions are guaranteed by GNMA and, under seller/servicer agreements, the Corporation is required to service the loans in accordance with the issuers’ servicing guidelines and standards. As of December 31, 2019, the Corporation serviced loans securitized through GNMA with a principal balance of $ 1.9 billion. Trust-Preferred Securities In 2004, FBP Statutory Trust I, a financing trust that is wholly owned by the Corporation, sold to institutional investors $ 100 million of its variable-rate TRuPs. FBP Statutory Trust I used the proceeds of the issuance, together with the proceeds of the purchase by the Corporation of $ 3.1 million of FBP Statutory Trust I variable-rate common securities, to purchase $ 103.1 million aggregate principal amount of the Corporation’s Junior Subordinated Deferrable Debentures. Also in 2004, FBP Statutory Trust II, a financing trust that is wholly owned by the Corporation, sold to institutional investors $ 125 million of its variable-rate TRuPs. FBP Statutory Trust II used the proceeds of the issuance, together with the proceeds of the purchase by the Corporation of $ 3.9 million of FBP Statutory Trust II variable-rate common securities, to purchase $ 128.9 million aggregate principal amount of the Corporation’s Junior Subordinated Deferrable Debentures. The debentures are presented in the Corporation’s consolidated statement of financial condition as other borrowings, net of related issuance costs. The variable-rate TRuPs are fully and unconditionally guaranteed by the Corporation. The Junior Subordinated Deferrable Debentures issued by the Corporation in April 2004 and September 2004 mature on June 17, 2034 and September 20, 2034, respectively; however, under certain circumstances, the maturity of Junior Subordinated Deferrable Debentures may be shortened (such shortening would result in a mandatory redemption of the variable rate TRuPs). During the first quarter of 2018, the Corporation completed the repurchase of $ 23.8 million of TRuPs of the FBP Statutory Trust I that were auctioned in a public sale at which the Corporation was invited to participate. The Corporation’s winning bid equated to 90% of the $ 23.8 million par value. The 10% discount resulted in a gain of approximately $ 2.3 million. In addition, during the third quarter of 2017, the Corporation completed the repurchase of $ 7.3 million of TRuPs of the FBP Statutory Trust I that were offered to the Corporation by an investment banking firm. The Corporation’s purchase price equated to 81% of the $ 7.3 million par value. The 19% discount, plus accrued interest, resulted in a gain of approximately $ 1.4 million. These gains are reflected in the consolidated statements of income as “Gain on early extinguishment of debt.” The Collins Amendment to the Dodd-Frank Wall Street Reform and Consumer Protection Act eliminated certain TRuPs from Tier 1 Capital; however, these instruments may remain in Tier 2 capital until the instruments are redeemed or mature. Under the indentures, the Corporation has the right, from time to time, and without causing an event of default, to defer payments of interest on the Junior Subordinated Deferrable Debentures by extending the interest payment period at any time and from time to time during the term of the subordinated debentures for up to twenty consecutive quarterly periods. As of December 31, 2019, the Corporation was current on all interest payments due on its subordinated debt. The Corporation is no longer required to obtain the approval of the Federal Reserve Bank before paying dividends, receiving dividends from the Bank, making payments on subordinated debt or TRuPs, incurring or guaranteeing debt or purchasing or redeeming any corporate stock. Private Label MBS During 2004 and 2005, an unaffiliated party, referred to in this subsection as the seller, established a series of statutory trusts to effect the securitization of mortgage loans and the sale of trust certificates (“private label MBS”) . The seller initially provided the servicing for a fee, which is senior to the obligations to pay private label MBS holders. The seller then entered into a sales agreement through which it sold and issued these private label MBS in favor of the Corporation’s banking subsidiary. Currently, the Bank is the sole owner of these private label MBS; the servicing of the underlying residential mortgages that generate the principal and interest cash flows is performed by another third party, which receives a servicing fee. These private label MBS are variable-rate securities indexed to 90-day LIBOR plus a spread. The principal payments from the underlying loans are remitted to a paying agent (servicer), who then remits interest to the Bank. Interest income is shared to a certain extent with the FDIC, which has an interest only strip (“IO”) tied to the cash flows of the underlying loans and is entitled to receive the excess of the interest income less a servicing fee over the variable rate income that the Bank earns on the securities. This IO is limited to the weighted-average coupon on the securities. The FDIC became the owner of the IO upon its intervention of the seller, a failed financial institution. No recourse agreement exists, and the Bank, as the sole holder of the securities, absorbs all risks from losses on non-accruing loans and repossessed collateral. As of December 31, 2019, the amortized cost and fair value of these private label MBS amounted to $ 16.0 million and $ 11.1 million, respectively, with a weighted-average yield of 3.90%, which is included as part of the Corporation’s available-for-sale investment securities portfolio. As described in Note 6 – Investment Securities, to the consolidated financial statements, the Corporation recorded a $ 0.5 million OTTI charge on these private label MBS during 2019. Investment in unconsolidated entity On February 16, 2011, FirstBank sold an asset portfolio consisting of performing and nonaccrual construction, commercial mortgage and commercial and industrial loans with an aggregate book value of $269.3 million to CPG/GS, an entity organized under the laws of the Commonwealth of Puerto Rico and majority owned by PRLP Ventures LLC (“PRLP”), a company created by Goldman, Sachs & Co. and Caribbean Property Group. In connection with the sale, the Corporation received $ 88.5 million in cash and a 35% interest in CPG/GS, and made a loan in the amount of $ 136.1 million representing seller financing provided by FirstBank. The loan was refinanced and consolidated with other outstanding loans of CPG/GS in the second quarter of 2018 and was paid in full in October 2019. FirstBank’s equity interest in CPG/GS is accounted for under the equity method. FirstBank recorded a loss on its interest in CPG/GS in 2014 that reduced to zero the carrying amount of the Bank’s investment in CPG/GS. No negative investment needs to be reported as the Bank has no legal obligation or commitment to provide further financial support to this entity; thus, no further losses have been or will be recorded on this investment. CPG/GS has used cash proceeds on the loan to cover operating expenses and debt service payments, including those related to the refinanced loan that was paid off in October 2019. FirstBank will not receive any return on its equity interest until PRLP receives an aggregate amount equivalent to its initial investment and a priority return of at least 12%, which has not occurred, resulting in FirstBank’s interest in CPG/GS being subordinate to PRLP’s interest. CPG/GS will then begin to make payments pro rata to PRLP and FirstBank, 35% and 65%, respectively, until FirstBank has achieved a 12% return on its invested capital and the aggregate amount of distributions is equal to FirstBank’s capital contributions to CPG/GS. The Bank has determined that CPG/GS is a VIE in which the Bank is not the primary beneficiary. In determining the primary beneficiary of CPG/GS, the Bank considered applicable guidance that requires the Bank to qualitatively assess the determination of the primary beneficiary (or consolidator) of CPG/GS based on whether it has both the power to direct the activities of CPG/GS that most significantly affect the entity’s economic performance and the obligation to absorb losses of, or the right to receive benefits from, CPG/GS that could potentially be significant to the VIE. The Bank determined that it does not have the power to direct the activities that most significantly impact the economic performance of CPG/GS as it does not have the right to manage or influence the loan portfolio, foreclosure proceedings, or the construction and sale of the property; therefore, the Bank concluded that it is not the primary beneficiary of CPG/GS. Servicing Assets The Corporation sells residential mortgage loans to GNMA, which generally securitizes the transferred loans into MBS. Also, certain conventional conforming loans are sold to FNMA or FHLMC with servicing retained. The Corporation recognizes as separate assets the rights to service loans for others, whether those servicing assets are originated or purchased. Servicing assets are included as part of Other assets in the consolidated statements of financial condition. The changes in servicing assets are shown below for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Balance at beginning of year $ 27,428 $ 25,255 $ 26,244 Capitalization of servicing assets 4,039 3,864 3,318 Amortization ( 4,592) ( 2,895) ( 3,091) Temporary impairment (charges) recoveries , net ( 43) 1,289 ( 1,611) Other (1) ( 70) ( 85) 395 Balance at end of year $ 26,762 $ 27,428 $ 25,255 Amount represents adjustments related to the repurchase of loans serviced for others. Impairment charges are recognized through a valuation allowance for each individual stratum of servicing assets. The valuation allowance is adjusted to reflect the amount, if any, by which the cost basis of the servicing asset for a given stratum of loans being serviced exceeds its fair value. Any fair value in excess of the cost basis of the servicing asset for a given stratum is not recognized. Changes in the impairment allowance were as follows for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Balance at beginning of year $ 30 $ 1,451 $ 461 Temporary impairment charges 78 123 1,611 OTTI of servicing assets - ( 132) ( 621) Recoveries ( 35) ( 1,412) - Balance at end of year $ 73 $ 30 $ 1,451 The components of net servicing income, included as part of mortgage banking activities in the consolidated statements of income, are shown below for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Servicing fees $ 8,522 $ 8,704 $ 7,630 Late charges and prepayment penalties 610 510 405 Adjustment for loans repurchased ( 70) ( 85) 395 Other ( 15) ( 8) ( 35) Servicing income, gross 9,047 9,121 8,395 Amortization and impairment of servicing assets ( 4,635) ( 1,606) ( 4,702) Servicing income, net $ 4,412 $ 7,515 $ 3,693 The Corporation’s servicing assets are subject to prepayment and interest rate risks. Key economic assumptions used in determining the fair value at the time of sale of the related mortgages ranged as follows for the indicated periods: Maximum Minimum Year Ended December 31, 2019 Constant prepayment rate: Government-guaranteed mortgage loans 6.4 % 6.2 % Conventional conforming mortgage loans 6.9 % 6.7 % Conventional non-conforming mortgage loans 9.3 % 8.9 % Discount rate: Government-guaranteed mortgage loans 12.0 % 12.0 % Conventional conforming mortgage loans 10.0 % 10.0 % Conventional non-conforming mortgage loans 14.3 % 14.3 % Year Ended December 31, 2018 Constant prepayment rate: Government-guaranteed mortgage loans 6.0 % 5.6 % Conventional conforming mortgage loans 6.5 % 6.2 % Conventional non-conforming mortgage loans 10.3 % 9.1 % Discount rate: Government-guaranteed mortgage loans 12.0 % 12.0 % Conventional conforming mortgage loans 10.0 % 10.0 % Conventional non-conforming mortgage loans 14.3 % 14.3 % Year Ended December 31, 2017 Constant prepayment rate: Government-guaranteed mortgage loans 6.2 % 6.0 % Conventional conforming mortgage loans 6.7 % 6.3 % Conventional non-conforming mortgage loans 9.5 % 9.1 % Discount rate: Government-guaranteed mortgage loans 12.0 % 12.0 % Conventional conforming mortgage loans 10.0 % 10.0 % Conventional non-conforming mortgage loans 14.3 % 14.3 % The weighted averages of the key economic assumptions that the Corporation used in its valuation model and the sensitivity of the current fair value to immediate 10% and 20% adverse changes in those assumptions for mortgage loans as of December 31, 2019 and 2018 were as follows: 2019 2018 (In thousands) Carrying amount of servicing assets $ 26,762 $ 27,428 Fair value $ 31,027 $ 31,738 Weighted-average expected life (in years) 8.39 8.45 Constant prepayment rate (weighted-average annual rate) 6.45 % 6.26 % Decrease in fair value due to 10% adverse change $ 748 $ 747 Decrease in fair value due to 20% adverse change $ 1,464 $ 1,462 Discount rate (weighted-average annual rate) 11.27 % 11.25 % Decrease in fair value due to 10% adverse change $ 1,450 $ 1,528 Decrease in fair value due to 20% adverse change $ 2,783 $ 2,930 These sensitivities are hypothetical and should be used with caution. As the figures indicate, changes in fair value based on a 10% variation in assumptions generally cannot be extrapolated because the relationship between the change in assumption and the change in fair value may not be linear. Also, in this table, the effect of a variation in a particular assumption on the fair value of the servicing asset is calculated without changing any other assumption; in reality, changes in one factor may result in changes in another (for example, increases in market interest rates may result in lower prepayments), which may magnify or counteract the sensitivities .

DEPOSITS

DEPOSITS	12 Months Ended
	Dec. 31, 2019
Deposits [Abstract]
DEPOSITS [Text Block]	NOTE 17 – DEPOSITS AND RELATED INTEREST The following table summarizes deposit balances as of the dates indicated: December 31, 2019 2018 (In thousands) Type of account and interest rate: Non-interest-bearing checking accounts $ 2,367,856 $ 2,395,481 Interest-bearing savings accounts - 0.05% to 2.00% (2018- 0.05% to 0.40%) 2,437,345 2,334,949 Interest-bearing checking accounts - 0.05% to 1.00% (2018- 0.05% to 1.00%) 1,412,390 1,304,043 Certificates of deposit- 0.10% to 4.00% (2018- 0.10% to 4.00%) 2,695,749 2,404,644 Brokered certificates of deposit- 1.20% to 3.00% (2018- 1.10% to 3.00%) 435,089 555,597 $ 9,348,429 $ 8,994,714 The weighted-average interest rate on total interest-bearing deposits as of December 31, 2019 and 2018 was 1.18% and 1.03%, respectively. As of December 31, 2019, the aggregate amount of unplanned overdrafts of demand deposits that were reclassified as loans amounted to $ 4.1 million (2018 - $ 2.1 million). Pre-arranged overdrafts lines of credit amounted to $ 28.6 million as of December 31, 2019 (2018- $ 21.7 million). The following table presents the contractual maturities of CDs, including brokered CDs, as of December 31, 2019: Total (In thousands) Three months or less $ 553,322 Over three months to six months 447,694 Over six months to one year 770,191 Over one year to two years 744,805 Over two years to three years 323,033 Over three years to four years 161,959 Over four years to five years 122,722 Over five years 7,112 Total $ 3,130,838 As of December 31, 2019, CDs in denominations of $100,000 or higher amounted to $ 2.4 billion (2018- $ 2.2 billion) including brokered CDs of $ 434.8 million (2018 - $ 555.6 million) at a weighted-average rate of 2.15% (2018 - 1.88%) issued to deposit brokers in the form of large certificates of deposits that are generally participated out by brokers in shares of less than the FDIC insurance limit. As of December 31, 2019, unamortized broker placement fees amounted to $ 0.9 million (2018 - $ 1.1 million), which are amortized over the contractual maturity of the brokered CDs under the interest method. As of December 31, 2019, time deposits in denominations of $250,000 or more amounted to $ 1.3 billion. Brokered CDs mature as follows: December 31, 2019 (In thousands) Three months or less $ 61,157 Over three months to six months 51,368 Over six months to one year 118,852 Over one year to three years 169,483 Over three years to five years 28,281 Over five years 5,948 Total $ 435,089 As of December 31, 2019, deposit accounts issued to government agencies amounted to $ 1.1 billion (2018-$ 900.8 million). These deposits are insured by the FDIC up to the applicable limits, generally $250,000. The uninsured portions were collateralized by securities and loans with an amortized cost of $ 780.9 million (2018 - $ 615.7 million) and an estimated market value of $ 769.6 million (2018 - $ 592.9 million). In addition, as of December 31, 2019, the Corporation used $ 212.0 million in letters of credit issued by the FHLB as pledges for public deposits in the Virgin Islands (2018 - $ 182.0 million). As of December 31, 2019, the Corporation had $ 826.9 million of government deposits in Puerto Rico (2018 - $ 677.3 million), $ 227.7 million in the Virgin Islands (2018 - $ 223.4 million) and $ 7.6 million in Florida (2018 - $ 0). A table showing interest expense on deposits for the indicated periods follows: Year Ended December 31, 2019 2018 2017 (In thousands) Interest-bearing checking accounts $ 6,071 $ 5,208 $ 4,566 Savings 16,017 14,298 12,520 Certificates of deposit 44,658 33,652 30,277 Brokered certificates of deposit 11,036 14,493 19,174 Total $ 77,782 $ 67,651 $ 66,537 The total interest expense on deposits included the amortization of broker placement fees related to brokered CDs amounting to $ 0.7 million, $ 1.2 million, and $ 1.9 million for 2019, 2018 and 2017, respectively. For 2019, 2018 and 2017, total interest expense included $ 7 thousand, $ 9 thousand, and $ 0.1 million, respectively, for the accretion of premiums related to time deposits assumed in the Doral Bank transaction in 2015.

SECURITIES SOLD UNDER AGREEMENT

SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE	12 Months Ended
	Dec. 31, 2019
Disclosure of Repurchase Agreements [Abstract]
SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE [Text Block]	NOTE 18 – SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE Securities sold under agreements to repurchase (repurchase agreements) as of the dates indicated consisted of the following: December 31, 2019 2018 (Dollars in thousands) Short-term fixed-rate repurchase agreement (1) $ - $ 50,086 Long-term fixed-rate repurchase agreement (2)(3)(4) 100,000 100,000 $ 100,000 $ 150,086 (1) Interest rate 2.85%. (2) Interest rate 2.26% as of December 31, 2019 and 2018. (3) Reported net of securities purchased under agreements to repurchase (reverse repurchase agreements) by counterparty, when applicable, pursuant to ASC Topic 210-20-45-11, “Balance Sheet – Offsetting – Repurchase and Reverse Repurchase Agreements.” (4) Subsequent to December 31, 2019, the lender has not exercised its call option on this callable repurchase agreement. The weighted-average interest rates on repurchase agreements as of December 31, 2019 and 2018 were 2.26% and 2.46%, respectively. Accrued interest payable on repurchase agreements amounted to $ 0.8 million and $ 2.8 million as of December 31, 2019 and 2018, respectively. Repurchase agreements mature as follows as of the indicated date: December 31, 2019 (In thousands) Over one year to three years $ 100,000 The following securities were sold under agreements to repurchase: December 31, 2019 Amortized Approximate Weighted Cost of Fair Value Average Underlying Balance of of Underlying Interest Rate Underlying Securities Securities Borrowing Securities of Security (Dollars in thousands) U.S. government-sponsored agencies $ 13,776 $ 4,723 $ 13,768 1.53 % MBS 115,630 95,277 116,397 2.31 % Total $ 129,406 $ 100,000 $ 130,165 Accrued interest receivable $ 347 December 31, 2018 Amortized Approximate Weighted Cost of Fair Value Average Underlying Balance of of Underlying Interest Rate Underlying Securities Securities Borrowing Securities of Security (Dollars in thousands) U.S. government-sponsored agencies $ 31,396 $ 25,276 $ 30,958 1.55 % MBS 155,963 124,810 151,777 2.39 % Total $ 187,359 $ 150,086 $ 182,735 Accrued interest receivable $ 483 The maximum aggregate balance of repurchase agreements outstanding at any month-end during 2019 was $ 150.1 million (2018 - $ 200 million). The average balance during 2019 was $ 110.6 million (2018 - $ 166.0 million). The weighted-average interest rate during 2019 and 2018 was 6.01% and 5.66%, respectively, considering negative market rates on reverse repurchase agreements. As of December 31, 2019 and 2018, the securities underlying such agreements were delivered to the dealers with which the repurchase agreements were transacted. Repurchase agreements as of December 31, 2019, grouped by counterparty, were as follows: Weighted-Average (Dollars in thousands) Amount Maturity (In Months) Counterparty JP Morgan Chase $ 100,000 25

ADVANCES FROM THE FEDERAL HOME

ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB)	12 Months Ended
	Dec. 31, 2019
Federal Home Loan Bank, Advances, Fixed Rate [Abstract]
ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB) [Text Block]	NOTE 19 – ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB) The following is a summary of the advances from the FHLB as of the indicated dates: December 31, December 31, 2019 2018 (In thousands) Short-term Fixed-rate advances from FHLB (1) $ 35,000 $ - Long-term Fixed-rate advances from FHLB (2) 535,000 740,000 $ 570,000 $ 740,000 Weighted-average interest rate of 1.00% as of each December 31, 2019 and 2018. Weighted-average interest rate of % and % as of December 31, 2019 and 2018, respectively. Advances from FHLB mature as follows as of December 31, 2019: December 31, 2019 (In thousands) Within one month $ 35,000 Over three to six months 45,000 Over six months to one year 50,000 Over one to three years 440,000 Total $ 570,000 The Corporation receives advances from the FHLB under an Advances, Collateral Pledge, and Security Agreement (the “Collateral Agreement”). The Collateral Agreement requires the Corporation to maintain a minimum amount of qualifying mortgage collateral with a market value of generally 125% or higher than the outstanding advances. As of each December 31, 2019 and 2018, the estimated value of specific mortgage loans pledged as collateral amounted to $ 1.3 billion, as computed by the FHLB for collateral purposes. The carrying value of such loans as of December 31, 2019 amounted to $ 1.6 billion (2018 - $ 1.7 billion). As of December 31, 2019, the Corporation had additional capacity of approximately $ 547.6 million on this credit facility based on collateral pledged at the FHLB, including a haircut reflecting the perceived risk associated with the collateral. Haircut refers to the percentage by which an asset’s market value is reduced for the purpose of collateral levels. Advances may be repaid prior to maturity, in whole or in part, at the option of the borrower upon payment of any applicable fee specified in the contract governing such advance. In calculating the fee, due consideration is given to (i) all relevant factors, including, but not limited to, any and all applicable costs of repurchasing and/or prepaying any associated liabilities and/or hedges entered into with respect to the applicable advance; (ii) the financial characteristics, in their entirety, of the advance being prepaid; and (iii), in the case of adjustable-rate advances, the expected future earnings of the replacement borrowing as long as the replacement borrowing is at least equal to the original advance’s par value and the replacement borrowing’s tenor is at least equal to the remaining maturity of the prepaid advance.

OTHER BORROWINGS

OTHER BORROWINGS	12 Months Ended
	Dec. 31, 2019
Subordinated Borrowings [Abstract]
OTHER BORROWINGS [Text Block]	NOTE 20 – OTHER BORROWINGS Other borrowings, as of the indicated dates, consisted of: December 31, December 31, (In thousands) 2019 2018 Floating rate junior subordinated debentures (FBP Statutory Trust I) (1) $ 65,593 $ 65,593 Floating rate junior subordinated debentures (FBP Statutory Trust II) (2) 118,557 118,557 $ 184,150 $ 184,150 Amount represents junior subordinated interest-bearing debentures due in 2034 with a floating interest rate of 2.75% over 3-month LIBOR ( 4.65% as of December 31, 2019 and 5.54% as of December 31, 2018). Amount represents junior subordinated interest-bearing debentures due in 2034 with a floating interest rate of 2.50% over 3-month LIBOR ( 4.41% as of December 31, 2019 and 5.29% as of December 31, 2018).

EARNINGS PER COMMON SHARE

EARNINGS PER COMMON SHARE	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
EARNINGS PER COMMON SHARE [Text Block]	NOTE 21 – EARNINGS PER COMMON SHARE The calculation of earnings per common share for the years ended December 31, 2019, 2018, and 2017 are as follows: Year Ended December 31, 2019 2018 2017 (In thousands, except per share information) Net income $ 167,377 $ 201,608 $ 66,956 Less: Preferred stock dividends ( 2,676) ( 2,676) ( 2,676) Net income attributable to common stockholders $ 164,701 $ 198,932 $ 64,280 Weighted-Average Shares: Average common shares outstanding 216,614 215,709 213,963 Average potential dilutive common shares 520 968 2,155 Average common shares outstanding - assuming dilution 217,134 216,677 216,118 Earnings per common share: Basic $ 0.76 $ 0.92 $ 0.30 Diluted $ 0.76 $ 0.92 $ 0.30 Earnings per common share is computed by dividing net income attributable to common stockholders by the weighted-average number of common shares issued and outstanding. Net income attributable to common stockholders represents net income adjusted for any preferred stock dividends, including any dividends declared but not yet paid, and any cumulative dividends related to the current dividend period that have not been declared as of the end of the period. Basic weighted-average common shares outstanding exclude unvested shares of restricted stock that do not contain non-forfeitable dividend rights. Potential dilutive common shares consist of unvested shares of restricted stock that do not contain non-forfeitable dividend rights, warrants outstanding during the period and common stock issued under the assumed exercise of stock options using the treasury stock method. This method assumes that the potential dilutive common shares are issued and outstanding and the proceeds from the exercise, in addition to the amount of compensation cost attributable to future services, are used to purchase common stock at the exercise date. The difference between the numbers of potential dilutive shares issued and the shares purchased is added as incremental shares to the actual number of shares outstanding to compute diluted earnings per share. Unvested shares of restricted stock, stock options, and warrants outstanding during the period that result in lower potential dilutive shares issued than shares purchased under the treasury stock method are not included in the computation of dilutive earnings per share since their inclusion would have an antidilutive effect on earnings per share. Potential dilutive common shares also include performance units that do not contain non-forfeitable dividend rights if the performance condition is met as of the end of the reporting period. On May 17, 2018, the U.S. Treasury exercised its warrant to purchase 1,285,899 shares of the Corporation’s common stock on a cashless basis, resulting in the issuance of 730,571 shares of common stock.

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	12 Months Ended
	Dec. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
STOCK-BASED COMPENSATION [Text Block]	NOTE 22 – STOCK-BASED COMPENSATION On May 24, 2016, the Corporation’s stockholders approved the amendment and restatement of the First BanCorp. Omnibus Incentive Plan, as amended (the “Omnibus Plan”), to, among other things, increase the number of shares of common stock reserved for issuance under the Omnibus Plan, extend the term of the Omnibus Plan to May 24, 2026 and re-approve the material terms of the performance goals under the Omnibus Plan for purposes of the then- effective Section 162(m) of the U.S. Internal Revenue Code of 1986, as amended. The Omnibus Plan provides for equity-based compensation incentives (the “awards”) through the grant of stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares, cash-based awards and other stock-based awards. The Omnibus Plan authorizes the issuance of up to 14,169,807 shares of common stock, subject to adjustments for stock splits, reorganizations and other similar events. As of December 31, 2019, 6,597,643 authorized shares of common stock were available for issuance under the Omnibus Plan. The Corporation’s Board of Directors, based on the recommendation of the Corporation’s Compensation and Benefits Committee, has the power and authority to determine those eligible to receive awards and to establish the terms and conditions of any awards, subject to various limits and vesting restrictions that apply to individual and aggregate awards. Restricted Stock Under the Omnibus Plan, the Corporation may grant restricted stock to plan participants, subject to forfeiture upon the occurrence of certain events until the dates specified in the participant’s award agreement. While the restricted stock is subject to forfeiture and does not contain non-forfeitable dividend rights, participants may exercise full voting rights with respect to the shares of restricted stock granted to them. The restricted stock granted under the Omnibus Plan is typically subject to a vesting period. During 2019, the Corporation awarded to its independent directors 51,841 shares of restricted stock that are subject to one year vesting periods. In addition, during 2019, the Corporation awarded 262,371 shares of restricted stock to employees; fifty percent ( 50%) of those shares vest on the two-year anniversary of the grant date and the remaining 50% vest on three-year anniversary of the grant date. Included in those 262,371 shares of restricted stock were 16,808 shares granted to retirement-eligible employees. The total expense determined for the restricted stock awarded to retirement-eligible employees was charged against earnings. The fair value of the shares of restricted stock granted in 2019 was based on the market price of the Corporation’s outstanding common stock on the date of the respective grant. The following table summarizes the restricted stock activity in 2019 under the Omnibus Plan: 2019 Number of Weighted- shares of Average restricted Grant Date stock Fair Value Unvested shares outstanding at beginning of year 964,110 $ 4.79 Granted 314,212 10.97 Forfeited ( 14,000) 8.55 Vested ( 619,517) 3.97 Unvested shares outstanding at end of year 644,805 $ 8.51 For the years ended December 31, 2019, 2018 and 2017, the Corporation recognized $ 2.8 million, $ 3.4 million and $ 4.0 million, respectively, of stock-based compensation expense related to restricted stock awards. As of December 31, 2019, there was $ 2.7 million of total unrecognized compensation cost related to unvested shares of restricted stock. The weighted average period over which the Corporation expects to recognize such cost was 1.5 years as of December 31, 2019. During 2018, the Corporation awarded to its independent directors 65,447 shares of restricted stock that were subject to one year vesting periods. In addition, during 2018, the Corporation awarded 342,439 shares of restricted stock to employees; 50% of those shares vest on the two-year anniversary of the grant date and the remaining 50% vest on the three-year anniversary of the grant date. Included in those 342,439 shares of restricted stock were 20,447 shares granted to retirement-eligible employees. Stock-based compensation accounting guidance requires the Corporation to reverse compensation expense for any awards that are forfeited due to employee or director turnover. Quarterly changes in the estimated forfeiture rate may have a significant effect on stock-based compensation, as the Corporation’s recognized the effect of adjusting the rate for all expense amortization in the period in which the forfeiture estimate is changed. If the actual forfeiture rate is higher than the estimated forfeiture rate, an adjustment is made to increase the estimated forfeiture rate, which will result in a decrease in the expense recognized in the financial statements. If the actual forfeiture rate is lower than the estimated forfeiture rate, an adjustment is made to decrease the estimated forfeiture rate, which will result in an increase in the expense recognized in the financial statements. Performance Units Under the Omnibus Plan, the Corporation may award performance units to Omnibus Plan participants. During 2019, the Corporation granted 200,053 units to executives, with each unit representing the value of one share of the Corporation’s common stock. The performance units granted in 2019 are for the performance period beginning January 1, 2019 and ending on December 31, 2021 and are subject to three year requisite service periods. These awards do not contain non-forfeitable rights to dividend equivalent amounts and can only be settled in shares of the Corporation’s common stock. The performance units will vest based on the achievement of a pre-established tangible book value per share target as of December 31, 2021. All of the performance units will vest if performance is at the pre-established performance target level or above. However, the participants may vest on 50% of the awards to the extent that performance is below the target but at 80% of the pre-established performance target level (the “80% minimum threshold”), which is measured based upon the growth in the tangible book value during the performance cycle. If performance is between the 80% minimum threshold and the pre-established performance target level, the participants will vest on a proportional amount. No performance units will vest if performance is below the 80% minimum threshold. During 2018, the Corporation awarded 304,408 performance units to executives. The performance units granted in 2018 are for the performance period beginning January 1, 2018 and ending on December 31, 2020 and are subject to three year requisite service periods and a pre-established performance target level as describe above. The fair value of the performance units awarded during 2019 and 2018 was based on the market price of the Corporation’s outstanding common stock on the respective date of the grant. For the year ended December 31, 2019, and 2018, the Corporation recognized $ 1.1 million and $ 0.6 million, respectively, of stock-based compensation expense related to performance units. As of December 31, 2019, there was $ 2.4 million of total unrecognized compensation cost related to unvested performance units that the Corporation expects to recognize over the next two years. The total amount of compensation expense recognized reflects management’s assessment of the probability that the pre-established performance goal will be achieved. The Corporation will recognize a cumulative adjustment to compensation expense in the then-current period to reflect any changes in the probability of achievement of the performance goals. Salary stock Also, effective April 1, 2013, the Corporation’s Board of Directors determined to increase the salary amounts paid to certain executive officers, primarily by paying the increased salary amounts in the form of shares of the Corporation’s common stock issued under the Omnibus Plan, instead of cash. During 2018, the Corporation issued 268,709 shares of common stock with a weighted-average market value per share of $ 6.51 as salary stock compensation. This resulted in compensation expense of $ 1.7 million recorded in 2018. Effective July 1, 2018, the Corporation ceased paying additional salary amounts in the form of stock in accordance with the previously disclosed revised executive compensation program. Shares withheld During 2019, the Corporation withheld 176,015 shares (2018 – 337,689 shares) of the restricted stock that vested during such period and withheld 96,377 shares from the common stock paid to certain senior officer as additional compensation in 2018 to cover the officers’ payroll and income tax withholding liabilities; these shares are held as treasury shares. The Corporation paid in cash any fractional share of salary stock to which an officer was entitled. In the consolidated financial statements, the Corporation treats shares withheld for tax purposes as common stock repurchases.

STOCKHOLDERS' EQUITY

STOCKHOLDERS' EQUITY	12 Months Ended
	Dec. 31, 2019
Stockholders' Equity Note [Abstract]
STOCKHOLDERS' EQUITY [Text Block]	NOTE 23 – STOCKHOLDERS’ EQUITY Common Stock As of December 31, 2019 and 2018, the Corporation had 2,000,000,000 authorized shares of common stock with a par value of $ 0.10 per share. As of December 31, 2019 and 2018, there were 222,103,721 and 221,789,509 shares issued, respectively, and 217,359,337 and 217,235,140 shares outstanding, respectively. Refer to Note 22 – Stock-Based Compensation, to the consolidated financial statements, for information about transactions related to common stock under the Omnibus Plan. On October 25, 2019, the Corporation announced that its Board of Directors declared a quarterly cash dividend of $ 0.05 per common share, which represents an increase of $ 0.02 per common share compared to the dividend paid on September 13, 2019. The dividend was paid on December 13, 2019 to shareholders of record at the close of business on November 29, 2019. For the year ended December 31, 2019 and 2018, total cash dividends declared on shares of common stock amounted to $ 30.5 million and $ 6.5 million, respectively. The Corporation intends to continue to pay quarterly dividends on common stock. As mentioned above, the Corporation is no longer required to obtain the approval of the Federal Reserve Bank before paying dividends, receiving dividends from the Bank, making payments on subordinated debt or TRuPs, incurring or guaranteeing debt or purchasing or redeeming any corporate stock. On May 17, 2018, the U.S. Treasury exercised its warrant to purchase 1,285,899 shares of the Corporation’s stock on a cashless basis resulting in the issuance of 730,571 shares of common stock and the use of 555,328 shares to cover the strike price of the transaction. Preferred Stock The Corporation has 50,000,000 authorized shares of preferred stock with a par value of $ 1.00, redeemable at the Corporation’s option, subject to certain terms. This stock may be issued in series and the shares of each series have such rights and preferences as are fixed by the Board of Directors when authorizing the issuance of that particular series. As of December 31, 2019, the Corporation has five outstanding series of non-convertible, non-cumulative preferred stock: 7.125% non-cumulative perpetual monthly income preferred stock, Series A; 8.35% non-cumulative perpetual monthly income preferred stock, Series B; 7.40% non-cumulative perpetual monthly income preferred stock, Series C; 7.25% non-cumulative perpetual monthly income preferred stock, Series D; and 7.00% non-cumulative perpetual monthly income preferred stock, Series E. The liquidation value per share is $ 25. Effective January 17, 2012, the Corporation delisted all of its outstanding series of non-convertible, non-cumulative preferred stock from the New York Stock Exchange. The Corporation has not arranged for listing and/or registration on another national securities exchange or for quotation of the Series A through E preferred stock in a quotation medium. In December 2016, for the first time since July 2009, the Corporation paid dividends on its non-cumulative perpetual monthly income preferred stock, after receiving regulatory approval. Since then, the Corporation has continued to pay monthly dividend payments on the non-cumulative perpetual monthly income preferred stock. The Corporation intends to continue monthly dividend payments on the non-cumulative perpetual monthly income preferred stock. Treasury stock During 2019 and 2018, the Corporation withheld an aggregate of 176,015 shares and 434,066 shares, respectively, of the restricted stock that vested during 2019 and 2018, and common stock paid to certain senior officers as additional compensation in 2018, to cover the officers’ payroll and income tax withholding liabilities; these shares are held as treasury stock. As mentioned above, effective July 1, 2018, the Corporation ceased paying additional salary amounts in form of stock. As of December 31, 2019 and 2018, the Corporation had 4,744,384 and 4,554,369 shares held as treasury stock, respectively. FirstBank Statutory Reserve (Legal Surplus) The Banking Law of the Commonwealth of Puerto Rico requires that a minimum of 10% of FirstBank’s net income for the year be transferred to a legal surplus reserve until such surplus equals the total of paid-in-capital on common and preferred stock. Amounts transferred to the legal surplus reserve from Retained earnings are not available for distribution to the Corporation, including for payment as dividends to the stockholders, without the prior consent of the Puerto Rico Commissioner of Financial Institutions. The Puerto Rico Banking Law provides that, when the expenditures of a Puerto Rico commercial bank are greater than receipts, the excess of the expenditures over receipts must be charged against the undistributed profits of the bank, and the balance, if any, must be charged against the legal surplus reserve, as a reduction thereof. If there is no legal surplus reserve sufficient to cover such balance in whole or in part, the outstanding amount must be charged against the capital account and the Bank cannot pay dividends until it can replenish the legal surplus reserve to an amount of at least 20% of the original capital contributed. During 2019 and 2018, the Corporation transferred $ 17.4 million and $ 20.5 million, respectively, to the legal surplus reserve. FirstBank’s legal surplus reserve, included as part of Retained earnings in the Corporation’s consolidated statements of financial condition, amounted to $ 97.6 million and $ 80.2 million as of December 31, 2019 and 2018, respectively.

EMPLOYEES' BENEFIT PLAN

EMPLOYEES' BENEFIT PLAN	12 Months Ended
	Dec. 31, 2019
Employees' Benefit Plan [Abstract]
Employees' Benefit Plan [Text Block]	NOTE 24 – EMPLOYEES’ BENEFIT PLAN FirstBank provides contributory retirement plans pursuant to Section 1081.01 of the Puerto Rico Internal Revenue Code of 2011 for Puerto Rico employees and Section 401(k) of the U.S. Internal Revenue Code for USVI and U.S. employees (the “Plans”). All employees are eligible to participate in the Plans after three months of service for purposes of making elective deferral contributions and one year of service for purposes of sharing in the Bank’s matching, qualified matching, and qualified non-elective contributions. Under the provisions of the Plans, the Bank contributes 50% of the first 6% of the participant’s compensation contributed to the Plans on a pretax basis, up to an annual limit. The matching contribution of fifty cents for every dollar of the employee’s contribution is comprised of: (i) twenty-five cents for every dollar of the employee’s contribution up to 6% of the employee’s eligible compensation to be paid to the Plan as of each bi-weekly payroll; and, (ii) an additional twenty-five cents for every dollar of the employee’s contribution up to 6% of the employee’s eligible compensation to be deposited as a lump sum subsequent to the Plan Year. Puerto Rico employees were permitted to contribute up to $ 15,000 for each of 2019, 2018 and 2017 (USVI and U.S. employees - $ 19,000 for 2019, $ 18,500 for 2018 and $ 18,000 for 2017). Additional contributions to the Plans are voluntarily made by the Bank as determined by its Board of Directors. No additional discretionary contributions were made for the years ended December 31, 2019, 2018 and 2017. The Bank had a total plan expense of $ 2.9 million, $ 1.5 million and $ 0.9 million for the years ended December 31, 2019, 2018 and 2017, respectively.

OTHER NON- INTEREST EXPENSES

OTHER NON- INTEREST EXPENSES	12 Months Ended
	Dec. 31, 2019
Other Non Interest Expenses [Abstract]
Other Noninterest Expenses [Text Block]	NOTE 25 –OTHER NON-INTEREST EXPENSES A detail of other non-interest expenses is as follows for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Supplies and printing $ 1,966 $ 2,177 $ 1,990 Release of reserve for unfunded lending commitments ( 412) ( 264) ( 928) Amortization of intangible assets 3,086 3,593 4,403 Servicing and processing fees 4,781 4,991 4,421 Write-down and losses on sale of non-real estate repossessed properties 8 62 253 Insurance and supervisory fees 3,596 4,602 4,809 Provision for operational losses 2,164 1,774 2,568 Other 4,632 5,140 4,635 Total $ 19,821 $ 22,075 $ 22,151

OTHER NON- INTEREST INCOME

OTHER NON- INTEREST INCOME	12 Months Ended
	Dec. 31, 2019
Other Non-interest Income [Abstract]
Other Noninterest Income [Text Block]	NOTE 26 –OTHER NON-INTEREST INCOME A detail of other non-interest income is as follows for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Non-deferrable loan fees $ 2,789 $ 2,384 $ 2,109 Merchant-related income 5,635 5,244 4,209 ATM and POS fees 9,147 9,515 8,929 Credit and debit card interchange and other fees 11,759 9,598 7,587 Mail and cable transmission commissions 2,207 2,101 1,729 Fair value adjustments and gain (losses) on sales of commercial and construction loans held for sale 2,316 ( 3,186) - (Loss) gain from sales of fixed-assets ( 242) 1,366 149 Gain from insurance proceeds 660 537 - Other 5,638 5,183 4,142 Total $ 39,909 $ 32,742 $ 28,854

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
INCOME TAXES [Text Block]	NOTE 27 – INCOME TAXES Income tax expense includes Puerto Rico and USVI income taxes, as well as applicable U.S. federal and state taxes. The Corporation is subject to Puerto Rico income tax on its income from all sources. As a Puerto Rico corporation, First BanCorp. is treated as a foreign corporation for U.S. and USVI income tax purposes and, accordingly, is generally subject to U.S. and USVI income tax only on its income from sources within the U.S. and USVI or income effectively connected with the conduct of a trade or business in those jurisdictions. Any such tax paid in the U.S. and USVI is also creditable against the Corporation’s Puerto Rico tax liability, subject to certain conditions and limitations. Under the Puerto Rico Internal Revenue Code of 2011, as amended (the “2011 PR Code”), the Corporation and its subsidiaries are treated as separate taxable entities and are not entitled to file consolidated tax returns and, thus, the Corporation is generally not entitled to utilize losses from one subsidiary to offset gains in another subsidiary. Accordingly, in order to obtain a tax benefit from a net operating loss (“NOL”), a particular subsidiary must be able to demonstrate sufficient taxable income within the applicable NOL carry-forward period. Pursuant to the 2011 PR Code, the carry-forward period for NOLs incurred during taxable years that commenced after December 31, 2004 and ended before January 1, 2013 is 12 years; for NOLs incurred during taxable years commencing after December 31, 2012, the carryover period is 10 years. The 2011 PR Code provides a dividend received deduction of 100% on dividends received from “controlled” subsidiaries subject to taxation in Puerto Rico and 85% on dividends received from other taxable domestic corporations. On December 10, 2018, the Governor of Puerto Rico signed into law Act 257 (“Act 257”) to amend some of the provisions of the 2011 PR Code, as amended. Act 257 introduced various changes to the income tax regime in the case of individuals and corporations, and the sales and use taxes, which took effect on January 1, 2019, including, among others, (i) a reduction in the Puerto Rico maximum corporate tax rate from 39% to 37.5%; (ii) an increase in the net operating and capital losses usage limitation from 80% to 90%; (iii) amendments to the provisions related to “pass-through” entities that provide that corporations that own 50% or more of a partnership will not be able to claim a current or carryover non-partnership NOL deduction against a partnership distributable share, adversely impacting a tax action taken in 2017 under which the Corporation and the Bank were previously allowed to offset pass-through income earned by pass-through entities with non-partnership net operating losses at the parent company level, more significantly in connection with the pass-through income earned by FirstBank Insurance; and (iv) other limitations on certain deductions, such as meals and entertainment deductions. The Corporation has maintained an effective tax rate lower than the maximum statutory rate, mainly by investing in government obligations and MBS exempt from U.S. and Puerto Rico income taxes and by doing business through an International Banking Entity (“IBE”) unit of the Bank, and through the Bank’s subsidiary, FirstBank Overseas Corporation, whose interest income and gain on sales is exempt from Puerto Rico income taxation. The IBE and FirstBank Overseas Corporation were created under the International Banking Entity Act of Puerto Rico, which provides for total Puerto Rico tax exemption on net income derived by IBEs operating in Puerto Rico on the specific activities identified in the IBE Act. An IBE that operates as a unit of a bank pays income taxes at the corporate standard rates to the extent that the IBE’s net income exceeds 20% of the bank’s total net taxable income. The components of income tax expense (benefit) are summarized below for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Current income tax expense $ 16,986 $ 14,073 $ 8,179 Deferred income tax expense (benefit): Adjustment for enacted changes in tax law - 15,402 138 Reversal of deferred tax asset valuation allowance - ( 63,228) ( 1,792) Other deferred income tax expense (benefit) 55,009 22,783 ( 11,498) Total income tax expense (benefit) $ 71,995 $ ( 10,970) $ ( 4,973) The differences between the income tax expense applicable to income before the provision for income taxes and the amount computed by applying the statutory tax rate in Puerto Rico were as follows for the indicated periods: Year Ended December 31, 2019 2018 2017 Amount % of Pretax Income Amount % of Pretax Income Amount % of Pretax Income (Dollars in thousands) Computed income tax at statutory rate $ 89,764 37.5 % $ 74,349 39.0 % $ 24,173 39.0 % Federal and state taxes 4,467 1.6 % 3,768 2.0 % 2,335 3.8 % Benefit of net exempt income ( 24,811) ( 10.4) % ( 22,782) ( 12.0) % ( 16,596) ( 26.8) % Disallowed NOL carryforward resulting from net exempt income 15,887 6.6 % 14,904 7.8 % 5,091 8.2 % Deferred tax valuation allowance ( 14,108) ( 5.9) % ( 90,521) ( 47.5) % ( 10,037) ( 16.2) % Adjustments in net deferred tax assets due to changes in enacted tax rates - - % 15,402 8.1 % 138 0.2 % Change in tax status of subsidiaries - - % - - % ( 13,161) ( 21.2) % Share-based compensation windfall ( 1,165) ( 0.5) % ( 1,595) ( 0.8) % ( 40) - % Effect of capital losses subject to preferential rates - - % - - % 2,102 3.4 % Nondeductible expenses and other permanent differences ( 1,712) ( 0.7) % ( 839) ( 0.4) % ( 470) ( 0.8) % Tax return to provision adjustments 1,846 0.8 % 4 - % 607 1.0 % Other-net 1,827 1.1 % ( 3,660) ( 1.9) % 885 1.4 % Total income tax expense (benefit) $ 71,995 30.1 % $ ( 10,970) ( 5.7) % $ ( 4,973) ( 8.0) % Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and their tax bases. Significant components of the Corporation's deferred tax assets and liabilities as of December 31, 2019 and 2018 were as follows: December 31, 2019 2018 (In thousands) Deferred tax asset: NOL carryforward $ 259,717 $ 316,059 Allowance for loan and lease losses 58,793 75,010 Alternative Minimum Tax credits available for carryforward 13,813 9,238 Unrealized loss on OREO valuation 13,963 15,405 Unrealized loss on available-for-sale securities, net - 189 Settlement payment-closing agreement 7,031 7,031 Legal and other reserves 2,791 3,293 Reserve for insurance premium cancellations 613 610 Other 9,722 7,526 Total gross deferred tax assets $ 366,443 $ 434,361 Deferred tax liabilities: Differences between the assigned values and tax bases of assets and liabilities recognized in purchase business combinations 3,823 4,192 Servicing assets 8,906 9,143 Unrealized gain on available-for-sale securities, net 1,808 - Other 511 514 Total gross deferred tax liabilities 15,048 13,849 Valuation allowance ( 86,553) ( 100,661) Net deferred tax asset $ 264,842 $ 319,851 Accounting for income taxes requires that companies assess whether a valuation allowance should be recorded against their deferred tax asset based on an assessment of the amount of the deferred tax asset that is “more likely than not” to be realized. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount that is more likely than not to be realized. Management assesses the valuation allowance recorded against deferred tax assets at each reporting date. The determination of whether a valuation allowance for deferred tax assets is appropriate is subject to considerable judgment and requires the evaluation of positive and negative evidence that can be objectively verified. Consideration must be given to all sources of taxable income available to realize the deferred tax asset, including, as applicable, the future reversal of existing temporary differences, future taxable income forecasts exclusive of the reversal of temporary differences and carryforwards, and tax planning strategies. In estimating taxes, management assesses the relative merits and risks of the appropriate tax treatment of transactions taking into account statutory, judicial, and regulatory guidance. After completion of the deferred tax asset valuation allowance analysis for the fourth quarter of 2019, management concluded that, as of December 31, 2019, it is more likely than not that FirstBank, the banking subsidiary, will generate sufficient taxable income to realize $ 206.4 million of its deferred tax assets related to NOLs within the applicable carry-forward periods. The net deferred tax assets of FirstBank amounted to $ 264.8 million as of December 31, 2019, net of a valuation allowance of $ 55.6 million, compared to a deferred tax asset of $ 319.8 million, net of a valuation allowance of $ 68.1 million, as of December 31, 2018. The positive evidence considered by management in arriving at its conclusion includes factors such as: FirstBank’s three-year cumulative income position; sustained periods of profitability; management’s proven ability to forecast future income accurately and execute tax strategies; forecasts of future profitability, under several potential scenarios that support the partial utilization of NOLs prior to their expiration from 2021 through 2024; and the utilization of NOLs over the past three-years. The negative evidence considered by management includes: uncertainties around the state of the Puerto Rico economy, including considerations on the impact of hurricane recovery funds together with Puerto Rico government debt renegotiation efforts and the ultimate sustainability of the latest fiscal plan certified by the PROMESA oversight board. Management’s estimate of future taxable income is based on internal projections that consider historical performance, multiple internal scenarios and assumptions, as well as external data that management believes is reasonable. If events are identified that affect the Corporation’s ability to utilize its deferred tax assets, the analysis will be updated to determine if any adjustments to the valuation allowance are required. If actual results differ significantly from the current estimates of future taxable income, even if caused by adverse macro-economic conditions, the remaining valuation allowance may need to be increased. Such an increase could have a material adverse effect on the Corporation’s financial condition and results of operations. Conversely, a higher than projected proportion of taxable income to exempt income could lead to a higher usage of available NOLs and a lower amount of disallowed NOLs from projected levels of tax-exempt income, per the 2011 PR code, which in turn could result in further releases to the deferred tax valuation allowance; any such decreases could have a material positive effect on the Corporation’s financial condition and results of operations. As of December 31, 2019, approximately $ 92.0 million of the deferred tax assets of the Corporation are attributable to temporary differences or tax credit carry-forwards that have no expiration date, compared to $ 104 million in 2018. The valuation allowance attributable to FirstBank’s deferred tax assets of $ 55.6 million as of December 31, 2019 is related to the estimated NOL disallowance attributable to projected levels of tax-exempt income, NOLs attributable to the Virgin Islands jurisdiction, and capital losses. The remaining balance of $ 30.9 million of the deferred tax asset valuation allowance non-attributable to FirstBank is mainly related to NOLs and capital losses at the holding company level. The Corporation will continue to provide a valuation allowance against its deferred tax assets in each applicable tax jurisdiction until the need for a valuation allowance is eliminated. The need for a valuation allowance is eliminated when the Corporation determines that it is more likely than not the deferred tax assets will be realized. The ability to recognize the remaining deferred tax assets that continue to be subject to a valuation allowance will be evaluated on a quarterly basis to determine if there are any significant events that would affect the ability to utilize these deferred tax assets. The Corporation has U.S. and USVI sourced NOL carryforwards. Section 382 of the U.S. Internal Revenue Code (“Section 382”) limits the ability to utilize U.S. and USVI NOLs for income tax purposes in such jurisdictions following an event that is considered to be an “ownership change”. Generally, an “ownership change” occurs when certain shareholders increase their aggregate ownership by more than 50 percentage points over their lowest ownership percentage over a three-year testing period. Upon the occurrence of a Section 382 ownership change, the use of NOLs attributable to the period prior to the ownership change is subject to limitations and only a portion of the U.S. and USVI NOLs may be used by the Corporation to offset its annual U.S. and USVI taxable income, if any. In 2017, the Corporation completed a formal ownership change analysis within the meaning of Section 382 covering a comprehensive period, and concluded that an ownership change had occurred during such period. The Section 382 limitation has resulted in higher U.S. and USVI income tax liabilities than we would have incurred in the absence of such limitation. The Corporation has mitigated to an extent the adverse effects associated with the Section 382 limitation as any such tax paid in the U.S. or USVI can be creditable against Puerto Rico tax liabilities or taken as a deduction against taxable income. However, our ability to reduce our Puerto Rico tax liability through such a credit or deduction depends on our tax profile at each annual taxable period, which is dependent on various factors. For 2019 and 2018, the Corporation incurred an income tax expense of approximately $ 4.5 million and $ 3.8 million, respectively, related to its U.S. operations. The limitation did not impact the USVI operations in 2019 and 2018. As of December 31, 2019, the Corporation did not

OTHER COMPREHENSIVE INCOME (LOS

OTHER COMPREHENSIVE INCOME (LOSS)	12 Months Ended
	Dec. 31, 2019
Statement of Other Comprehensive Income [Abstract]
Comprehensive Income (Loss) Note [Text Block]	NOTE 28 – OTHER COMPREHENSIVE INCOME (LOSS) The following table presents changes in Accumulated other comprehensive income (loss) for the years ended December 31, 2019, 2018 and 2017: Changes in Accumulated Other Comprehensive Income (Loss) by Component (1) Year ended December 31, 2019 2018 2017 (In thousands) Unrealized net holding gains (losses) on debt securities Beginning balance $ ( 40,415) $ ( 20,609) $ ( 34,383) Other comprehensive income (loss) 47,179 ( 19,806) 13,774 Ending balance $ 6,764 $ ( 40,415) $ ( 20,609) Unrealized holding losses on equity securities Beginning balance $ - $ ( 6) $ ( 7) Reclassification to retained earnings per ASU 2016-01 - 6 - Other comprehensive income - - 1 Ending balance $ - $ - $ ( 6) ______________________ (1) All amounts presented are net of tax. The following table presents the amounts reclassified out of each component of Accumulated other comprehensive income (loss) for the years ended December 31, 2019, 2018 and 2017: Reclassifications Out of Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Consolidated Statements of Income Year ended December 31, 2019 2018 2017 (In thousands) Unrealized holding losses on debt securities Realized (loss) gain on sale of debt securities Net (loss) gain on sale of investments $ - $ ( 34) $ 371 OTTI on debt securities Net impairment losses on available-for-sale debt securities ( 497) ( 50) ( 12,231) Total before tax $ ( 497) $ ( 84) $ ( 11,860) Income tax - - - Total, net of tax $ ( 497) $ ( 84) $ ( 11,860)

LEASES

LEASES	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Lessee, Operating Leases [Text Block]	NOTE 29 – LEASES The Corporation’s operating leases are primarily related to the Corporation’s branches and leased commercial space for ATMs. Our leases mainly have terms ranging from two years to thirty years, some of which include options to extend the leases for up to seven years. As of December 31, 2019, the Corporation did not have a lease that qualifies as a finance lease. Operating lease cost for the year ended December 31, 2019 amounted to $ 10.7 million. Supplemental balance sheet information related to leases is as follows: As of December 31, 2019 (Dollars in thousands) Operating lease ROU asset $ 61,327 Operating lease liability $ 64,259 Operating lease weighted-average remaining lease term (in years) 10.8 Operating lease weighted-average discount rate 3.29% Generally, the Corporation cannot practically determine the interest rate implicit in the lease. Therefore, the Corporation uses its incremental borrowing rate as the discount rate for the lease. Supplemental cash flow information related to leases is as follows: Year Ended December 31, 2019 (In thousands) Operating cash flow from operating leases (1) $ 10,219 ROU assets obtained in exchange for operating lease liabilities (2) 10,762 Represents cash paid for amounts included in the measurement of operating lease liabilities. Represents non-cash activity and, accordingly, is not reflected in the consolidated statements of cash flows. Maturities under lease liabilities as of December 31, 2019, were as follows: Amount (In thousands) 2020 $ 10,329 2021 9,678 2022 8,664 2023 6,982 2024 6,395 2025 and later years 35,205 Total lease payments 77,253 Less: imputed interest ( 12,994) Total present value of lease liability $ 64,259

FAIR VALUE

FAIR VALUE	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
FAIR VALUE [Text Block]	NOTE 30 – FAIR VALUE Fair Value Measurement The FASB authoritative guidance for fair value measurement defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. This guidance also establishes a fair value hierarchy for classifying financial instruments. The hierarchy is based on whether the inputs to the valuation techniques used to measure fair value are observable or unobservable. One of three levels of inputs may be used to measure fair value: Level 1 Valuations of Level 1 assets and liabilities are obtained from readily-available pricing sources for market transactions involving identical assets or liabilities. Level 1 assets and liabilities include equity securities that trade in an active exchange market, as well as certain U.S. Treasury and other U.S. government and agency securities and corporate debt securities that are traded by dealers or brokers in active markets. Level 2 Valuations of Level 2 assets and liabilities are based on observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 2 assets and liabilities include (i) MBS for which the fair value is estimated based on the value of identical or comparable assets, (ii) debt securities with quoted prices that are traded less frequently than exchange-traded instruments, and (iii) derivative contracts whose value is determined using a pricing model with inputs that are observable in the market or can be derived principally from or corroborated by observable market data. Level 3 Valuations of Level 3 assets and liabilities are based on unobservable inputs that are supported by little or no market activity and are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined by using pricing models for which the determination of fair value requires significant management judgments as to the estimation. Financial Instruments Recorded at Fair Value on a Recurring Basis Investment securities available for sale and marketable equity securities held at fair value The fair value of investment securities was the market value based on quoted market prices (as is the case with Treasury notes, non-callable U.S. agencies debt securities, and equity securities with readily determinable fair values), when available (Level 1), or, when available, market prices for identical or comparable assets (as is the case with MBS and callable U.S. agency debt) that are based on observable market parameters, including benchmark yields, reported trades, quotes from brokers or dealers, issuer spreads, bids, offers and reference data, including market research operations (Level 2). Observable prices in the market already consider the risk of nonperformance. If listed prices or quotes are not available, fair value is based upon discounted cash flow models that use unobservable inputs due to the limited market activity of the instrument, as is the case with certain private label MBS held by the Corporation (Level 3). Derivative instruments The fair value of most of the Corporation’s derivative instruments is based on observable market parameters and takes into consideration the credit risk component of paying counterparties, when appropriate. On interest caps, only the seller’s credit risk is considered. The Corporation valued the caps using a discounted cash flow approach based on the related LIBOR and swap rate for each cash flow. The Corporation considers a credit spread for those derivative instruments that are not secured. The cumulative mark-to-market effect of credit risk in the valuation of derivative instruments in 2019, 2018 and 2017 was immaterial. Assets and liabilities measured at fair value on a recurring basis are summarized below as of December 31, 2019 and 2018: As of December 31, 2019 As of December 31, 2018 Fair Value Measurements Using Fair Value Measurements Using (In thousands) Level 1 Level 2 Level 3 Assets/Liabilities at Fair Value Level 1 Level 2 Level 3 Assets/Liabilities at Fair Value Assets: Securities available for sale : U.S. Treasury Securities $ 7,479 $ - $ - $ 7,479 $ 7,456 $ - $ - $ 7,456 Noncallable U.S. agencies debt securities - 146,777 - 146,777 - 319,124 - 319,124 Callable U.S. agencies debt securities and MBS - 1,950,331 - 1,950,331 - 1,594,622 - 1,594,622 Puerto Rico government obligations - 4,348 2,974 7,322 - 4,128 2,824 6,952 Private label MBS - - 11,116 11,116 - - 13,914 13,914 Other investments - - 500 500 - - 500 500 Equity securities 1,428 - - 1,428 418 - - 418 Derivatives, included in assets: Purchased interest rate cap agreements - 11 - 11 - 623 - 623 Interest rate lock commitments - 341 - 341 - 383 - 383 Forward loan sales commitments - 20 - 20 - 12 - 12 Liabilities: Derivatives, included in liabilities: Written interest rate cap agreements - 11 - 11 - 617 - 617 Forward contracts - 138 - 138 - 383 - 383 The table below presents a reconciliation of the beginning and ending balances of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31, 2019, 2018, and 2017: 2019 2018 2017 Level 3 Instruments Only Securities Available for Sale (1) Securities Available for Sale (1) Securities Available for Sale (1) (In thousands) Beginning balance $ 17,238 $ 19,855 $ 22,914 Total gain (losses) (realized/unrealized): Included in earnings ( 497) ( 50) - Included in other comprehensive income 714 222 2,777 Purchases - 500 - Principal repayments and amortization ( 2,865) ( 3,289) ( 5,836) Ending balance $ 14,590 $ 17,238 $ 19,855 ___________________ (1) Amounts mostly related to private label MBS. The tables below present qualitative information for significant assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as of December 31, 2019 and December 31, 2018: December 31, 2019 Fair Value Valuation Technique Unobservable Input Range Weighted Average (Dollars in thousands) Minimum Maximum Investment securities available-for-sale: Private label MBS $ 11,116 Discounted cash flows Discount rate 13.7% 13.7% 13.7% Prepayment rate 6.8% 10.3% 7.9% Projected Cumulative Loss Rate 0.0% 7.4% 2.8% Puerto Rico government obligations 2,974 Discounted cash flows Discount rate 6.9% 6.9% 6.9% Prepayment rate 3.0% 3.0% 3.0% December 31, 2018 Fair Value Valuation Technique Unobservable Input Range Weighted Average (Dollars in thousands) Minimum Maximum Investment securities available-for-sale: Private label MBS $ 13,914 Discounted cash flows Discount rate 14.5% 14.5% 14.5% Prepayment rate 3.3% 20.9% 11.4% Projected Cumulative Loss Rate 0.0% 6.8% 3.0% Puerto Rico government obligations 2,824 Discounted cash flows Discount rate 6.3% 6.3% 6.3% Prepayment rate 3.0% 3.0% 3.0% Information about Sensitivity to Changes in Significant Unobservable Inputs Private label MBS : The significant unobservable inputs in the valuation include probability of default, the loss severity assumption, and prepayment rates. Shifts in those inputs would result in different fair value measurements. Increases in the probability of default, loss severity assumptions, and prepayment rates in isolation would generally result in an adverse effect on the fair value of the instruments. The Corporation modeled meaningful and possible shifts of each input to assess the effect on the fair value estimation. Puerto Rico Government Obligations : The significant unobservable input used in the fair value measurement is the assumed prepayment rate of the underlying residential mortgage loans that collateralize these obligations, which are guaranteed by the PRHFA. A significant increase (decrease) in the assumed rate would lead to a higher (lower) fair value estimate. The fair value of these bonds was based on a discounted cash flow analysis that contemplates the credit quality of the holder of second mortgages and a discount for liquidity constraints on the bonds considering the absence of an active market for them. Due to the guarantee of the PRHFA and other applicable contractual safeguards, the Corporation does not apply any additional credit spread for debt service default. The table below summarizes changes in unrealized gains and losses recorded in earnings for the years ended December 31, 2019, 2018 and 2017 for Level 3 assets and liabilities that were still held at the end of each year: Changes in Unrealized Losses (Year Ended December 31, 2019) Changes in Unrealized Losses (Year Ended December 31, 2018) Changes in Unrealized Losses (Year Ended December 31, 2017) Level 3 Instruments Only Securities Available for Sale Securities Available for Sale Securities Available for Sale (In thousands) Changes in unrealized losses relating to assets still held at reporting date: Net impairment losses on available-for-sale investment securities (credit component) $ ( 497) $ ( 50) $ - Additionally, fair value is used on a nonrecurring basis to evaluate certain assets in accordance with GAAP. Adjustments to fair value usually result from the application of lower-of-cost or market accounting ( e.g ., loans held for sale carried at the lower-of-cost or fair value and repossessed assets) or write-downs of individual assets ( e.g ., goodwill and loans). As of December 31, 2019, the Corporation recorded impairment or valuation adjustments for assets recognized at fair value on a non-recurring basis as shown in the following table: Carrying value as of December 31, 2019 Losses recorded for the Year Ended December 31, 2019 Level 1 Level 2 Level 3 (In thousands) Loans receivable (1) $ - $ - $ 217,252 $ ( 18,013) OREO (2) - - 101,626 ( 6,572) Consists mainly of impaired commercial and construction loans. The Corporation generally measured impairments based on the fair value of the collateral. The Corporation derived the fair values from external appraisals that took into consideration prices in observed transactions involving similar assets in similar locations but adjusted for specific characteristics and assumptions of the collateral ( e.g ., absorption rates), which are not market observable. The Corporation derived the fair values from appraisals that took into consideration prices in observed transactions involving similar assets in similar locations but adjusted for specific characteristics and assumptions of the properties ( e.g. , absorption rates and net operating income of income producing properties), which are not market observable. Losses were related to market valuation adjustments after the transfer of the loans to the OREO portfolio. As of December 31, 2018, the Corporation recorded impairment or valuation adjustments for assets recognized at fair value on a non-recurring basis as shown in the following table: Carrying value as of December 31, 2018 Losses recorded for the Year Ended December 31, 2018 Level 1 Level 2 Level 3 (In thousands) Loans receivable (1) $ - $ - $ 365,726 $ ( 29,799) OREO (2) - - 131,402 ( 11,499) Loans Held For Sale (3) - - 16,111 ( 10,102) Consists mainly of impaired commercial and construction loans. The Corporation generally measured the impairments based on the fair value of the collateral. The Corporation derived the fair values from external appraisals that took into consideration prices in observed transactions involving similar assets in similar locations but adjusted for specific characteristics and assumptions of the collateral ( e.g. , absorption rates), which are not market observable. The Corporation derived the fair values from appraisals that took into consideration prices in observed transactions involving similar assets in similar locations but adjusted for specific characteristics and assumptions of the properties ( e.g. , absorption rates and net operating income of income producing properties), which are not market observable. Losses were related to market valuation adjustments after the transfer of the loans to the OREO portfolio. Represents nonaccrual commercial and construction loans transferred to held for sale in 2018 and still in inventory at year-end. The Corporation derived the fair value of these loans primarily from broker price opinions that the Corporation considered. As of December 31, 2017, the Corporation recorded impairment or valuation adjustments for assets recognized at fair value on a nonrecurring basis as shown in the following table: Carrying value as of December 31, 2017 Losses recorded for the Year Ended December 31, 2017 Level 1 Level 2 Level 3 (In thousands) Loans receivable (1) $ - $ - $ 410,428 $ ( 39,493) OREO (2) - - 147,940 ( 8,511) Mortgage servicing rights (3) - - 25,255 ( 1,611) Consists mainly of impaired commercial and construction loans. The Corporation generally measured the impairments based on the fair value of the collateral. The Corporation derived the fair values from external appraisals that took into consideration prices in observed transactions involving similar assets in similar locations but adjusted for specific characteristics and assumptions of the collateral ( e.g. , absorption rates), which are not market observable. The Corporation derived the fair values from appraisals that took into consideration prices in observed transactions involving similar assets in similar locations but adjusted for specific characteristics and assumptions of the properties ( e.g. , absorption rates and net operating income of income producing properties), which are not market observable. Losses were related to market valuation adjustments after the transfer of the loans to the OREO portfolio. Fair value adjustments to the mortgage servicing rights were mainly due to assumptions associated with mortgage prepayments rates. The Corporation carries its mortgage servicing rights at the lower of cost or market, measured at fair value on a non-recurring basis. Assumptions for the value of mortgage servicing rights include: Prepayment rate 6.30%, Discount rate 11.23%. Qualitative information regarding the fair value measurements for Level 3 financial instruments as of December 31, 2019 are as follows: December 31, 2019 Method Inputs Loans Income, Market, Comparable Sales, Discounted Cash Flows External appraised values; probability weighting of broker price opinions; management assumptions regarding market trends or other relevant factors OREO Income, Market, Comparable Sales, Discounted Cash Flows External appraised values; probability weighting of broker price opinions; management assumptions regarding market trends or other relevant factors The following tables present the carrying value, estimated fair value and estimated fair value level of the hierarchy of financial instruments as of December 31, 2019 and 2018: Total Carrying Amount in Statement of Financial Condition as of December 31, 2019 Fair Value Estimate as of December 31, 2019 Level 1 Level 2 Level 3 (In thousands) Assets: Cash and due from banks and money market investments (amortized cost) $ 644,099 $ 644,099 $ 644,099 $ - $ - Investment securities available for sale (fair value) 2,123,525 2,123,525 7,479 2,101,456 14,590 Investment securities held to maturity (amortized cost) 138,675 110,374 - - 110,374 Equity securities (fair value) 38,249 38,249 1,428 36,821 - Loans held for sale (lower of cost or market) 39,477 40,234 - 40,234 - Loans, held for investment (amortized cost) 9,002,205 Less: allowance for loan and lease losses ( 155,139) Loans held for investment, net of allowance $ 8,847,066 8,715,144 - - 8,715,144 Derivatives, included in assets (fair value) 372 372 - 372 - Liabilities: Deposits (amortized cost) 9,348,429 9,372,591 - 9,372,591 - Securities sold under agreements to repurchase (amortized cost) 100,000 120,020 - 120,020 - Advances from FHLB (amortized cost) 570,000 578,498 - 578,498 - Other borrowings (amortized cost) 184,150 180,577 - - 180,577 Derivatives, included in liabilities (fair value) 149 149 - 149 - Total Carrying Amount in Statement of Financial Condition as of December 31, 2018 Fair Value Estimate as of December 31, 2018 Level 1 Level 2 Level 3 (In thousands) Assets: Cash and due from banks and money market investments (amortized cost) $ 586,203 $ 586,203 $ 586,203 $ - $ - Investment securities available for sale (fair value) 1,942,568 1,942,568 7,456 1,917,874 17,238 Investment securities held to maturity (amortized cost) 144,815 125,658 - - 125,658 Equity Securities (fair value) 44,530 44,530 418 44,112 - Loans held for sale (lower of cost or market) 43,186 43,831 - 27,720 16,111 Loans held for investment (amortized cost) 8,858,123 Less: allowance for loan and lease losses ( 196,362) Loans held for investment, net of allowance $ 8,661,761 8,213,144 - - 8,213,144 Derivatives, included in assets (fair value) 1,018 1,018 - 1,018 - Liabilities: Deposits (amortized cost) 8,994,714 9,005,679 - 9,005,679 - Securities sold under agreements to repurchase (amortized cost) 150,086 169,366 - 169,366 - Advances from FHLB (amortized cost) 740,000 730,253 - 730,253 - Other borrowings (amortized cost) 184,150 177,201 - - 177,201 Derivatives, included in liabilities (fair value) 1,000 1,000 - 1,000 - The short-term nature of certain assets and liabilities result in their carrying value approximating fair value. These include cash and cash due from banks and other short-term assets, such as FHLB stock. Certain assets, the most significant being premises and equipment, mortgage servicing rights, deposits base, and other customer relationship intangibles, are not considered financial instruments and are not included above. Accordingly, this fair value information is not intended to, and does not, represent the Corporation’s underlying value. Many of these assets and liabilities that are subject to the disclosure requirements are not actively traded, requiring management to estimate fair values. These estimates necessarily involve the use of assumptions and judgment about a wide variety of factors, including but not limited to, relevancy of market prices of comparable instruments, expected futures cash flows, and appropriate discount rates.

REVENUE FROM CONTRACTS WITH CUS

REVENUE FROM CONTRACTS WITH CUSTOMERS	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Revenue from Contract with Customer [Text Block]	NOTE 31 – REVENUE FROM CONTRACTS WITH CUSTOMERS Revenue Recognition In accordance with ASC Topic 606, “Revenues from Contracts with Customers,” revenues are recognized when control of promised goods or services is transferred to customers in an amount that reflects the consideration to which the Corporation expects to be entitled in exchange for those goods or services. To determine revenue recognition for arrangements that an entity determines are within the scope of ASC Topic 606, the Corporation performs the following five steps: (i) identifies the contract(s) with a customer; (ii) identifies the performance obligations in the contract; (iii) determines the transaction price; (iv) allocates the transaction price to the performance obligations in the contract; and (v) recognizes revenue when (or as) the Corporation satisfies a performance obligation. The Corporation only applies the five-step model to contracts when it is probable that the entity will collect the consideration to which it is entitled in exchange for the goods or services it transfers to the customer. At contract inception, once the contract is determined to be within the scope of ASC Topic 606, the Corporation assesses the goods or services that are promised within each contract, identifies those that contain performance obligations, and assesses whether each promised good or service is distinct. The Corporation then recognizes as revenue the amount of the transaction price that is allocated to the respective performance obligation when (or as) the performance obligation is satisfied. Disaggregation of Revenue The following table summarizes the Corporation’s revenue, which includes net interest income on financial instruments and non-interest income, disaggregated by type of service and business segments for the years ended December 31, 2019 and 2018: (In thousands) Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Treasury and Investments United States Operations Virgin Islands Operations Total Year ended December 31, 2019: Net interest income (1) $ 68,803 $ 244,535 $ 91,266 $ 73,626 $ 62,539 $ 26,312 $ 567,081 Service charges and fees on deposit accounts - 14,534 5,811 - 631 2,940 23,916 Insurance commissions - 9,621 - - 67 498 10,186 Merchant-related income - 4,120 466 - - 1,049 5,635 Credit and debit card fees - 19,014 104 - 43 1,744 20,905 Other service charges and fees 216 3,012 2,690 - 1,558 1,313 8,789 Not in scope of ASC Topic 606 (1) 16,609 1,428 2,643 ( 225) 508 178 21,141 Total non-interest income 16,825 51,729 11,714 ( 225) 2,807 7,722 90,572 Total Revenue $ 85,628 $ 296,264 $ 102,980 $ 73,401 $ 65,346 $ 34,034 $ 657,653 (In thousands) Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Treasury and Investments United States Operations Virgin Islands Operations Total Year ended December 31, 2018: Net interest income (1) $ 79,389 $ 217,933 $ 78,675 $ 61,628 $ 59,056 $ 28,702 $ 525,383 Service charges and fees on deposit accounts - 13,332 4,965 - 559 2,812 21,668 Insurance commissions - 7,889 - - 87 455 8,431 Merchant-related income - 3,561 748 - - 934 5,243 Credit and debit card fees - 17,538 1,225 - 618 2,061 21,442 Other service charges and fees 252 4,391 1,280 71 1,351 525 7,870 Not in scope of Topic 606 (1) 16,821 995 ( 3,060) 2,434 405 61 17,656 Total non-interest income 17,073 47,706 5,158 2,505 3,020 6,848 82,310 Total Revenue $ 96,462 $ 265,639 $ 83,833 $ 64,133 $ 62,076 $ 35,550 $ 607,693 (1) Most of the Corporation’s revenue is not within the scope of ASC Topic 606. The guidance explicitly excludes net interest income from financial assets and liabilities, as well as other non-interest income from loans, leases, investment securities and derivative financial instruments. For 2019 and 2018, substantially all of the Corporation’s revenue within the scope of ASC Topic 606 was related to performance obligations satisfied at a point in time. The following is a discussion of the Corporation’s revenues that are within the scope of ASC Topic 606. Service Charges and Fees on Deposit Accounts Service charges and fees on deposit accounts relate to fees generated from a variety of deposit products and services rendered to customers. Charges include, but are not limited to, overdraft fees, non-sufficient fund fees, dormant fees and monthly service charges. Such fees are recognized concurrently with the event on a daily basis or on a monthly basis depending upon the customer’s cycle date. These depository arrangements are considered day-to-day contracts that do not extend beyond the services performed, as customers have the right to terminate these contracts with no penalty or, if any, nonsubstantive penalties. Insurance Commissions For insurance commissions, which include regular and contingent commissions paid to the Corporation’s insurance agency, the agreements contain a performance obligation related to the sale/issuance of the policy and ancillary administrative post-issuance support. The performance obligations are satisfied when the policies are issued, and revenue is recognized at that point in time. In addition, contingent commission income may be considered to be constrained, as defined under ASC Topic 606. Contingent commission income is included in the transaction price only to the extent that it is probable that a significant reversal in the amount of cumulative revenue recognized will not occur or payments are received. For 2019 and 2018, the Corporation recognized revenue of $ 3.0 million and $ 2.4 million, respectively, at the time that payments were confirmed and constraints were released. Merchant-related Income For merchant-related income, the determination of which included the consideration of a 2015 sale of merchant contracts that involved sales of point of sale (“POS”) terminals and entry into a marketing alliance under a revenue-sharing agreement, the Corporation concluded that control of the POS terminals and merchant contracts was transferred to the customer at the contract’s inception. With respect to the related revenue-sharing agreement, the Corporation satisfies the marketing alliance performance obligation over the life of the contract, and recognizes the associated transaction price as the entity performs and any constraints over the variable consideration are resolved. Credit and Debit Card Fees Credit and debit card fees primarily represent revenues earned from interchange fees and ATM fees. Interchange and network revenues are earned on credit and debit card transactions conducted with payment networks. ATM fees are primarily earned as a result of surcharges assessed to non-FirstBank customers who use a FirstBank ATM. Such fees are generally recognized concurrently with the delivery of services on a daily basis. Other Fees Other fees primarily include revenues generated from wire transfers, lockboxes, and bank issuances of checks. The Corporation recognizes such fees concurrently with the event or on a monthly basis. Contract Balances A contract liability is an entity’s obligation to transfer goods or services to a customer in exchange for consideration from the customer. During 2019, the Bank entered into a growth agreement with an international card service association to expand the customer base and enhance product offerings. As part of this agreement, the Bank received a signing bonus of approximately $0.7 million. The contract requires the Bank to either launch a new debit card product by March 30, 2021 or maintain a ratio of over 50% of the portfolio with the related card service association by the end of year 2021. The Corporation recognized $ 0.7 million as a contract liability as the revenue is constrained to the fulfillment of either of the above conditions. In addition, as discussed above, during 2015, the Bank entered into a long-term strategic marketing alliance under a revenue-sharing agreement with another entity to which the Bank sold its merchant contracts portfolio and related POS terminals. Merchant services are marketed through FirstBank’s branches and offices in Puerto Rico and the Virgin Islands. Under the revenue-sharing agreement, FirstBank shares with this entity revenues generated by the merchant contracts over the term of the 10-year agreement. As of December 31, 2019 and 2018, these contract liabilities amounted to approximately $ 2.5 million and $ 2.1 million, respectively, which will be recognized over the remaining term of the contracts. For 2019 and 2018, the Corporation recognized revenue and its contract liabilities decreased by approximately $ 0.3 A contract asset is the right to consideration for transferred goods or services when the amount is conditioned on something other than the passage of time. As of December 31, 2019 and 2018, there were no contract assets from contracts with customers or contract assets recorded on the Corporation’s consolidated financial statements. The following table show the activity of contract liabilities for the years ended December 31, 2019 and 2018: (In thousands) 2019 2018 Beginning Balance $ 2,071 $ 2,396 Plus: Additions 730 - Less: Amortizations ( 325) ( 325) Ending balance $ 2,476 $ 2,071 Other Except for the contract liabilities noted above, the Corporation did not have any significant performance obligations as of December 31, 2019. The Corporation also did not have any material contract acquisition costs and did not make any significant judgments or estimates in recognizing revenue for financial reporting purposes.

SUPPLEMENTAL CASH FLOW INFORMAT

SUPPLEMENTAL CASH FLOW INFORMATION	12 Months Ended
	Dec. 31, 2019
Supplemental Cash Flow Elements [Abstract]
SUPPLEMENTAL CASH FLOW INFORMATION [Text Block]	NOTE 32 – SUPPLEMENTAL STATEMENT OF CASH FLOWS INFORMATION Supplemental statement of cash flows information is as follows for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Cash paid for: Interest on borrowings $ 107,010 $ 98,194 $ 93,634 Income tax 13,495 7,175 4,037 Operating cash flow from operating leases 10,219 - - Non-cash investing and financing activities: Additions to OREO 40,398 48,767 47,711 Additions to auto and other repossessed assets 47,643 52,023 40,987 Capitalization of servicing assets 4,039 3,864 3,318 Loan securitizations 235,258 233,175 235,074 Loans held for investment transferred to held for sale 24,470 90,319 - Loans held for sale transferred to held for investment - 2,179 10,234 Property plant and equipment transferred to other assets - - 1,185 ROU asset obtained in exchange for operating lease liabilities 10,762 - - Adoption of lease accounting standard: ROU assets operating leases 57,178 - - Operating lease liabilities 59,818 - -

REGULATORY MATTERS, COMMITMENTS

REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES [Text Block]	NOTE 33 – REGULATORY MATTERS, COMMITMENTS, AND CONTINGENCIES The Corporation and FirstBank are each subject to various regulatory capital requirements imposed by the federal banking agencies. Failure to meet minimum capital requirements can result in certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material adverse effect on the Corporation’s financial statements and activities. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Corporation must meet specific capital guidelines that involve quantitative measures of the Corporation’s and FirstBank’s assets, liabilities, and certain off-balance sheet items as calculated under regulatory accounting practices. The Corporation’s capital amounts and classification are also subject to qualitative judgments and adjustment by the regulators with respect to minimum capital requirements, components, risk weightings, and other factors. As of December 31, 2019, and 2018, the Corporation and FirstBank exceeded the minimum regulatory capital ratios for capital adequacy purposes and FirstBank exceeded the minimum regulatory capital ratios to be considered a well capitalized institution under the regulatory framework for prompt corrective action. As of December 31, 2019, management does not believe that any condition has changed or event has occurred that would have changed the institution’s status. Although the Corporation and FirstBank became subject to the U.S. Basel III capital rules (“Basel III rules”) beginning on January 1, 2015, certain elements of the Basel III have been deferred by the federal banking agencies. The Corporation and FirstBank compute risk-weighted assets using the Standardized Approach required by the Basel III rules. The Basel III rules require the Corporation to maintain an additional capital conservation buffer of 2.5% to avoid limitations on both (i) capital distributions ( e.g. , repurchases of capital instruments, dividends and interest payments on capital instruments) and (ii) discretionary bonus payments to executive officers and heads of major business lines. The phase-in of the capital conservation buffer began on January 1, 2016 with a first year requirement of 0.625% of additional Common Equity Tier 1 Capital (“CET1”), which was progressively increased over a four-year period, increasing by that same percentage amount on each subsequent January 1 until it reached the fully phased-in 2.5% CET1 requirement on January 1, 2019. Under the fully phased-in Basel III rules, in order to be considered adequately capitalized and not subject to the above-described limitations, the Corporation is required to maintain: (i) a minimum CET1 capital to risk-weighted assets ratio of at least 4.5%, plus the 2.5% “capital conservation buffer,” resulting in a required minimum CET1 ratio of at least 7%; (ii) a minimum ratio of total Tier 1 capital to risk-weighted assets of at least 6.0%, plus the 2.5% capital conservation buffer, resulting in a required minimum Tier 1 capital ratio of 8.5%; (iii) a minimum ratio of total Tier 1 plus Tier 2 capital to risk-weighted assets of at least 8.0%, plus the 2.5% capital conservation buffer, resulting in a required minimum total capital ratio of 10.5%; and (iv) a required minimum leverage ratio of 4%, calculated as the ratio of Tier 1 capital to average on-balance sheet (non-risk adjusted) assets. In addition, as required under the Basel III rules, the Corporation’s TRuPs were fully phased-out from Tier 1 capital as of January 1, 2016. However, the Corporation’s TRuPs may continue to be included in Tier 2 capital until the instruments are redeemed or mature. The Federal Reserve Board, the FDIC, and the Office of the Comptroller of the Currency (collectively “the agencies”) have issued several rulemakings over the last two years to simplify certain aspects of the capital rule. For example, the capital rule included transitional arrangements for certain requirements. Under such transitional arrangements in the capital rule, any amount of mortgage servicing assets, temporary difference deferred tax assets, and investments in the capital of unconsolidated financial institutions that a banking organization did not deduct from common equity tier 1 capital was risk weighted at 100 percent until January 1, 2018. In 2017, the agencies adopted a transition rule to allow non-advanced approaches banking organizations, such as the Corporation and FirstBank, to continue to apply the transition treatment in effect in 2017 (including the 100 percent risk weight for mortgage servicing assets, temporary difference deferred tax assets, and significant investments in the capital of unconsolidated financial institutions) while the agencies considered the simplifications proposal. On July 9, 2019, the agencies adopted a final rule that supersedes the regulatory capital transition rules and eliminates the transition provisions that are no longer operative. The final rule will be generally effective April 1, 2020 and eliminates: (i) the 10% common equity tier 1 capital deduction threshold, which applies individually to holdings of mortgage servicing assets, temporary difference deferred tax assets, and significant investments in the capital of unconsolidated financial institutions in the form of common stock; (ii) the 15% common equity tier 1 capital deduction threshold, which applies to the aggregate amount of such items; (iii) the 10% threshold for non-significant investments, which applies to holdings of regulatory capital of unconsolidated financial institutions; and (iv) the deduction treatment for significant investments in the capital of unconsolidated financial institutions that are not in the form of common stock. Instead of the current capital rule's treatments for mortgage servicing assets, temporary difference deferred tax assets, and investments in the capital of unconsolidated financial institutions, the final rule requires non-advanced approaches banking organizations to deduct from common equity tier 1 capital any amount of mortgage servicing assets, temporary difference deferred tax assets, and investments in the capital of unconsolidated financial institutions that individually exceeds 25% of common equity tier 1 capital of the banking organization (the 25% common equity tier 1 capital deduction threshold). The final rule retains the deferred requirement that a banking organization must apply a 250% risk weight to non-deducted mortgage servicing assets or temporary difference deferred tax assets. The regulatory capital positions of the Corporation and FirstBank as of December 31, 2019 and 2018 were as follows: Regulatory Requirements Actual For Capital Adequacy Purposes To be Well-Capitalized Thresholds Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) As of December 31, 2019 Total Capital (to Risk-Weighted Assets) First BanCorp. $ 2,286,337 25.22% $ 725,236 8.0% N/A N/A FirstBank $ 2,242,262 24.74% $ 725,047 8.0% $ 906,309 10.0% Common Equity Tier 1 Capital (to Risk-Weighted Assets) First BanCorp. $ 1,957,887 21.60% $ 407,946 4.5% N/A N/A FirstBank $ 1,820,571 20.09% $ 407,839 4.5% $ 589,101 6.5% Tier I Capital (to Risk-Weighted Assets) First BanCorp. $ 1,993,991 22.00% $ 543,927 6.0% N/A N/A FirstBank $ 2,128,571 23.49% $ 543,785 6.0% $ 725,047 8.0% Leverage ratio First BanCorp. $ 1,993,991 16.15% $ 493,786 4.0% N/A N/A FirstBank $ 2,128,571 17.26% $ 493,242 4.0% $ 616,552 5.0% As of December 31, 2018 Total Capital (to Risk-Weighted Assets) First BanCorp. $ 2,118,940 24.00% $ 706,418 8.0% N/A N/A FirstBank $ 2,075,894 23.51% $ 706,426 8.0% $ 883,032 10.0% Common Equity Tier 1 Capital (to Risk-Weighted Assets) First BanCorp. $ 1,792,880 20.30% $ 397,360 4.5% N/A N/A FirstBank $ 1,656,563 18.76% $ 397,365 4.5% $ 573,971 6.5% Tier I Capital (to Risk-Weighted Assets) First BanCorp. $ 1,828,984 20.71% $ 529,814 6.0% N/A N/A FirstBank $ 1,964,563 22.25% $ 529,819 6.0% $ 706,426 8.0% Leverage ratio First BanCorp. $ 1,828,984 15.37% $ 475,924 4.0% N/A N/A FirstBank $ 1,964,563 16.53% $ 475,490 4.0% $ 594,362 5.0% The following table summarizes commitments to extend credit and standby letters of credit as of the indicated dates: December 31, 2019 2018 (In thousands) Financial instruments whose contract amounts represent credit risk: Commitments to extend credit: Construction undisbursed funds $ 185,569 $ 160,905 Unused personal lines of credit 722,761 722,510 Commercial lines of credit 533,230 455,344 Commercial letters of credit 82,281 69,664 Standby letters of credit 4,452 2,865 The Corporation’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument on commitments to extend credit and standby letters of credit is represented by the contractual amount of those instruments. Management uses the same credit policies and approval process in entering into commitments and conditional obligations as it does for on-balance sheet instruments. Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any conditions established in the contract. Commitments generally have fixed expiration dates or other termination clauses. Since certain commitments are expected to expire without being drawn upon, the total commitment amount does not necessarily represent future cash requirements. For most of the commercial lines of credit, the Corporation has the option to reevaluate the agreement prior to additional disbursements. In the case of credit cards and personal lines of credit, the Corporation can cancel the unused credit facility at any time and without cause. In general, commercial and standby letters of credit are issued to facilitate foreign and domestic trade transactions. Normally, commercial and standby letters of credit are short-term commitments used to finance commercial contracts for the shipment of goods. The collateral for these letters of credit includes cash or available commercial lines of credit. The fair value of commercial and standby letters of credit is based on the fees currently charged for such agreements, which, as of December 31, 2019 and 2018, was not significant. The Corporation obtained from GNMA commitment authority to issue GNMA MBS. Under this program, for 2019, the Corporation sold approximately $ 235.3 million (2018 - $ 233.2 million) of FHA/VA mortgage loan production into GNMA MBS. As of December 31, 2019, First BanCorp. and its subsidiaries were defendants in various legal proceedings, claims and other loss contingencies arising in the ordinary course of business. On at least a quarterly basis, the Corporation assesses its liabilities and contingencies in connection with threatened and outstanding legal proceedings, claims and other loss contingencies utilizing the latest information available. For legal proceedings, claims and other loss contingencies where it is both probable that the Corporation will incur a loss and the amount can be reasonably estimated, the Corporation establishes an accrual for the loss. Once established, the accrual is adjusted as appropriate to reflect any relevant developments. For legal proceedings, claims and other loss contingencies where a loss is not probable or the amount of the loss cannot be estimated, no accrual is established. Any estimate involves significant judgment, given the varying stages of the proceedings (including the fact that some of them are currently in preliminary stages), the existence in some of the current proceedings of multiple defendants whose share of liability has yet to be determined, the numerous unresolved issues in the proceedings, and the inherent uncertainty of the various potential outcomes of such proceedings. Accordingly, the Corporation’s estimate will change from time-to-time, and actual losses may be more or less than the current estimate. While the final outcome of legal proceedings, claims and other loss contingencies is inherently uncertain, based on information currently available, management believes that the final disposition of the Corporation’s legal proceedings, claims and other loss contingencies, to the extent not previously provided for, will not have a material adverse effect on the Corporation’s consolidated financial position as a whole. If management believes that, based on available information, it is at least reasonably possible that a material loss (or material loss in excess of any accrual) will be incurred in connection with any legal contingencies, the Corporation discloses an estimate of the possible loss or range of loss, either individually or in the aggregate, as appropriate, if such an estimate can be made, or discloses that an estimate cannot be made. Based on the Corporation’s assessment as of December 31, 2019, no such disclosures were necessary.

DERIVATIVE INSTRUMENTS AND HEDG

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES [Text Block]	NOTE 34 – DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES One of the market risks facing the Corporation is interest rate risk, which includes the risk that changes in interest rates will result in changes in the value of the Corporation’s assets or liabilities and will adversely affect the Corporation’s net interest income from its loan and investment portfolios. The overall objective of the Corporation’s interest rate risk management activities is to reduce the variability of earnings caused by changes in interest rates. The Corporation designates a derivative as a fair value hedge, cash flow hedge or economic undesignated hedge when it enters into the derivative contract. As of December 31, 2019 and 2018, all derivatives held by the Corporation were considered economic undesignated hedges. The Corporation records these undesignated hedges at fair value with the resulting gain or loss recognized in current earnings. The following summarizes the principal derivative activities used by the Corporation in managing interest rate risk: Interest rate cap agreements - Interest rate cap agreements provide the right to receive cash if a reference interest rate rises above a contractual rate. The value of the interest rate cap increases as the reference interest rate rises. The Corporation enters into interest rate cap agreements for protection from rising interest rates. Forward Contracts - Forward contracts are primarily sales of to-be-announced (“TBA”) MBS that will settle over the standard delivery date and do not qualify as “regular way” security trades. Regular-way security trades are contracts that have no net settlement provision and no market mechanism to facilitate net settlement and that provide for delivery of a security within the time frame generally established by regulations or conventions in the market place or exchange in which the transaction is being executed. The forward sales are considered derivative instruments that need to be marked to market. The Corporation uses these securities to economically hedge the FHA/VA residential mortgage loan securitizations of the mortgage-banking operations. The Corporation also reports as forward contracts the mandatory mortgage loan sales commitments that it enters into with GSEs that require or permit net settlement via a pair-off transaction or the payment of a pair-off fee. Unrealized gains (losses) are recognized as part of Mortgage banking activities in the consolidated statements of income. Interest Rate Lock Commitments - Interest rate lock commitments are agreements under which the Corporation agrees to extend credit to a borrower under certain specified terms and conditions in which the interest rate and the maximum amount of the loan are set prior to funding. Under the agreement, the Corporation commits to lend funds to a potential borrower, generally on a fixed rate basis, regardless of whether interest rates change in the market. To satisfy the needs of its customers, the Corporation may enter into non-hedging transactions. In these transactions, the Corporation generally participates as a buyer in one of the agreements and as a seller in the other agreement under the same terms and conditions. In addition, the Corporation enters into certain contracts with embedded derivatives that do not require separate accounting as these are clearly and closely related to the economic characteristics of the host contract. When the embedded derivative possesses economic characteristics that are not clearly and closely related to the economic characteristics of the host contract, it is bifurcated, carried at fair value, and designated as a trading or non-hedging derivative instrument. The following table summarizes the notional amounts of all derivative instruments as of the indicated dates: Notional Amounts (1) As of December 31, 2019 2018 (In thousands) Undesignated economic hedges: Interest rate contracts: Written interest rate cap agreements $ 21,010 $ 68,510 Purchased interest rate cap agreements 21,010 68,510 Interest rate lock commitments 11,456 11,722 Forward Contracts: Sale of TBA GNMA MBS pools 35,000 33,000 Forward loan sales commitments 6,418 6,339 $ 94,894 $ 188,081 (1) Notional amounts are presented on a gross basis with no netting of offsetting exposure positions. The following table summarizes for derivative instruments their fair values and location in the consolidated statements of financial condition as of the indicated dates: Asset Derivatives Liability Derivatives Statements of December 31, December 31, December 31, December 31, Financial Condition 2019 2018 Statements of 2019 2018 Location Fair Value Fair Value Financial Condition Location Fair Value Fair Value (In thousands) Undesignated economic hedges: Interest rate contracts: Written interest rate cap agreements Other assets $ - $ - Accounts payable and other liabilities $ 11 $ 617 Purchased interest rate cap agreements Other assets 11 623 Accounts payable and other liabilities - - Interest rate lock commitments Other assets 341 383 - - Forward Contracts: Sales of TBA GNMA MBS pools Other assets - - Accounts payable and other liabilities 138 383 Forward loan sales commitments Other assets 20 12 - - $ 372 $ 1,018 $ 149 $ 1,000 The following table summarizes the effect of derivative instruments on the consolidated statements of income for the indicated periods: Gain (or Loss) Location of Unrealized Gain (loss) Year ended on Derivative Recognized in December 31, Statements of Income 2019 2018 2017 (In thousands) Undesignated economic hedges: Interest rate contracts: Written and purchased interest rate cap agreements Interest income - Loans $ ( 6) $ 22 $ ( 2) Interest rate lock commitments Mortgage Banking Activities 224 383 - Forward contracts: Sales of TBA GNMA MBS pools Mortgage Banking Activities 245 ( 371) 189 Forward loan sales commitments Mortgage Banking Activities 8 12 - Total gain on derivatives $ 471 $ 46 $ 187 Derivative instruments are subject to market risk. As is the case with investment securities, the market value of derivative instruments is largely a function of the financial market’s expectations regarding the future direction of interest rates. Accordingly, current market values are not necessarily indicative of the future impact of derivative instruments on earnings. This will depend, for the most part, on the shape of the yield curve, and the level of interest rates, as well as the expectations for rates in the future. As of December 31, 2019, the Corporation had not entered into any derivative instrument containing credit-risk-related contingent features. Credit and Market Risk of Derivatives The Corporation uses derivative instruments to manage interest rate risk. By using derivative instruments, the Corporation is exposed to credit and market risk. If the counterparty fails to perform, credit risk is equal to the extent of the Corporation’s fair value gain on the derivative. When the fair value of a derivative instrument contract is positive, this generally indicates that the counterparty owes the Corporation which, therefore, creates a credit risk for the Corporation. When the fair value of a derivative instrument contract is negative, the Corporation owes the counterparty and, therefore, it has no credit risk. The Corporation minimizes its credit risk in derivative instruments by entering into transactions with reputable broker dealers (financial institutions) that are reviewed periodically by the Management Investment and Asset Liability Committee of the Corporation (the “MIALCO”) and by the Board of Directors. The Corporation also has a policy of requiring that all derivative instrument contracts be governed by an International Swaps and Derivatives Association Master Agreement, which includes a provision for netting. The Corporation has a policy of diversifying derivatives counterparties to reduce the consequences of counterparty default. The Corporation had credit risk of $ 0.4 million as of December 31, 2019 (2018 — $ 1.0 million) related to derivative instruments with positive fair values. The credit risk does not consider the value of any collateral and the effects of legally enforceable master netting agreements. There were no credit losses associated with derivative instruments recognized in 2019, 2018, or 2017. Market risk is the adverse effect that a change in interest rates or implied volatility rates has on the value of a financial instrument. The Corporation manages the market risk associated with interest rate contracts by establishing and monitoring limits as to the types and degree of risk that may be undertaken. The MIALCO monitors Corporation’s derivative activities as part of its risk-management oversight of the Corporation’s treasury functions.

OFFSETTING OF ASSETS AND LIABIL

OFFSETTING OF ASSETS AND LIABILITIES	12 Months Ended
	Dec. 31, 2019
Offsetting [Abstract]
Offsetting of assets and liabilties [Table Text Block]	NOTE 35 – OFFSETTING OF ASSETS AND LIABILITIES The Corporation enters into master agreements with counterparties, primarily related to derivatives and repurchase agreements, that may allow for netting of exposures in the event of default. In an event of default, each party has a right of set-off against the other party for amounts owed under the related agreement and any other amount or obligation owed with respect to any other agreement or transaction between them. The following tables present information about the offsetting of financial assets and liabilities as well as derivative assets and liabilities, as of the indicated dates: Offsetting of Financial Assets and Derivative Assets As of December 31, 2019 Net Amounts of Assets Presented in the Statement of Financial Condition Gross Amounts of Recognized Assets Gross Amounts Offset in the Statement of Financial Condition Gross Amounts Not Offset in the Statement of Financial Condition Financial Instruments Cash Collateral Net Amount (In thousands) Description Derivatives $ 11 $ - $ 11 $ - $ ( 11) $ - Securities purchased under agreement to resell 200,000 ( 200,000) - - - - Total $ 200,011 $ ( 200,000) $ 11 $ - $ ( 11) $ - As of December 31, 2018 Net Amounts of Assets Presented in the Statement of Financial Condition Gross Amounts of Recognized Assets Gross Amounts Offset in the Statement of Financial Condition Gross Amounts Not Offset in the Statement of Financial Condition Financial Instruments Cash Collateral Net Amount (In thousands) Description Derivatives $ 623 $ - $ 623 $ - $ ( 623) $ - Securities purchased under agreement to resell 200,000 ( 200,000) - - - - Total $ 200,623 $ ( 200,000) $ 623 $ - $ ( 623) $ - Offsetting of Financial Liabilities and Derivative Liabilities As of December 31, 2019 Gross Amounts Not Offset in the Statement of Financial Condition Net Amounts of Liabilities Presented in the Statement of Financial Condition Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statement of Financial Condition Financial Instruments Cash Collateral Net Amount (In thousands) Description Securities purchased under agreement to repurchase $ 300,000 $ ( 200,000) $ 100,000 $ ( 100,000) $ - $ - As of December 31, 2018 Gross Amounts Not Offset in the Statement of Financial Condition Net Amounts of Liabilities Presented in the Statement of Financial Condition Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statement of Financial Condition Financial Instruments Cash Collateral As of December 31, 2018 Net Amount (In thousands) Description Securities purchased under agreement to repurchase $ 350,086 $ ( 200,000) $ 150,086 $ ( 150,086) $ - $ -

SEGMENT INFORMATION

SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
SEGMENT INFORMATION [Text Block]	NOTE 36 – SEGMENT INFORMATION Based upon the Corporation’s organizational structure and the information provided to the Chief Executive Officer, the operating segments are based primarily on the Corporation’s lines of business for its operations in Puerto Rico, the Corporation’s principal market, and by geographic areas for its operations outside of Puerto Rico. As of December 31, 2019, the Corporation had six The Commercial and Corporate Banking segment consists of the Corporation’s lending and other services for large customers represented by specialized and middle-market clients and the public sector. The Commercial and Corporate Banking segment offers commercial loans, including commercial real estate and construction loans, and floor plan financings, as well as other products, such as cash management and business management services. The Mortgage Banking segment consists of the origination, sale, and servicing of a variety of residential mortgage loans. The Mortgage Banking segment also acquires and sells mortgages in the secondary markets. In addition, the Mortgage Banking segment includes mortgage loans purchased from other local banks and mortgage bankers. The Consumer (Retail) Banking segment consists of the Corporation’s consumer lending and deposit-taking activities conducted mainly through its branch network and loan centers. The Treasury and Investments segment is responsible for the Corporation’s investment portfolio and treasury functions that are executed to manage and enhance liquidity. This segment lends funds to the Commercial and Corporate Banking, Mortgage Banking, Consumer (Retail) Banking and United States Operations segments to finance their lending activities and borrows from those segments. The Consumer (Retail) Banking segment also lends funds to other segments. The interest rates charged or credited by Treasury and Investments and the Consumer (Retail) Banking segments are allocated based on market rates. The difference between the allocated interest income or expense and the Corporation’s actual net interest income from centralized management of funding costs is reported in the Treasury and Investments segment. The United States Operations segment consists of all banking activities conducted by FirstBank in the United States mainland, including commercial and retail banking services. The Virgin Islands Operations segment consists of all banking activities conducted by the Corporation in the USVI and BVI, including commercial and retail banking services. The accounting policies of the segments are the same as those referred to in Note 1 - Nature of Business and Summary of Significant Accounting Policies, to the consolidated financial statements. The Corporation evaluates the performance of the segments based on net interest income, the provision for loan and lease losses, non-interest income and direct non-interest expenses. The segments are also evaluated based on the average volume of their interest-earning assets less the allowance for loan and lease losses. The following tables present information about the reportable segments for the indicated periods: Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Banking Treasury and Investments United States Operations Virgin Islands Operations Total (In thousands) For the year ended December 31, 2019: Interest income $ 120,981 $ 216,066 $ 148,224 $ 63,175 $ 97,406 $ 30,045 $ 675,897 Net (charge) credit for transfer of funds ( 52,178) 66,675 ( 56,958) 47,477 ( 5,016) - - Interest expense - ( 38,206) - ( 37,026) ( 29,851) ( 3,733) ( 108,816) Net interest income 68,803 244,535 91,266 73,626 62,539 26,312 567,081 (Provision) release for loan and lease losses ( 13,499) ( 41,043) 17,565 - ( 7,296) 4,048 ( 40,225) Non-interest income (loss) 16,825 51,729 11,714 ( 225) 2,807 7,722 90,572 Direct non-interest expenses ( 34,825) ( 116,854) ( 34,718) ( 2,729) ( 34,070) ( 28,995) ( 252,191) Segment income $ 37,304 $ 138,367 $ 85,827 $ 70,672 $ 23,980 $ 9,087 $ 365,237 Average earnings assets $ 2,161,772 $ 1,960,352 $ 2,489,933 $ 2,487,084 $ 1,931,015 $ 467,252 $ 11,497,408 Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Banking Treasury and Investments United States Operations Virgin Islands Operations Total (In thousands) For the year ended December 31, 2018: Interest income $ 127,042 $ 181,166 $ 138,706 $ 61,913 $ 83,971 $ 32,169 $ 624,967 Net (charge) credit for transfer of funds ( 47,653) 65,092 ( 60,031) 44,540 ( 1,948) - - Interest expense - ( 28,325) - ( 44,825) ( 22,967) ( 3,467) ( 99,584) Net interest income 79,389 217,933 78,675 61,628 59,056 28,702 525,383 Provision for loan and lease losses ( 13,083) ( 23,516) ( 4,804) - ( 11,882) ( 5,968) ( 59,253) Non-interest income 17,073 47,706 5,158 2,505 3,020 6,848 82,310 Direct non-interest expenses ( 38,213) ( 112,176) ( 32,371) ( 2,966) ( 33,566) ( 30,963) ( 250,255) Segment income (loss) $ 45,166 $ 129,947 $ 46,658 $ 61,167 $ 16,628 $ ( 1,381) $ 298,185 Average earnings assets $ 2,258,974 $ 1,636,002 $ 2,530,635 $ 2,552,130 $ 1,750,155 $ 537,574 $ 11,265,470 Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Banking Treasury and Investments United States Operations Virgin Islands Operations Total (In thousands) For the year ended December 31, 2017: Interest income $ 131,718 $ 173,690 $ 128,871 $ 48,071 $ 69,760 $ 36,313 $ 588,423 Net (charge) credit for transfer of funds ( 45,759) 27,475 ( 36,904) 56,865 ( 1,677) - - Interest expense - ( 25,240) - ( 49,577) ( 18,902) ( 3,153) ( 96,872) Net interest income 85,959 175,925 91,967 55,359 49,181 33,160 491,551 Provision for loan and lease losses ( 47,713) ( 53,778) ( 33,296) - ( 3,644) ( 5,823) ( 144,254) Non-interest income (loss) 12,825 43,924 7,176 ( 10,206) 2,664 6,004 62,387 Direct non-interest expenses ( 36,403) ( 108,165) ( 35,142) ( 3,376) ( 32,197) ( 26,994) ( 242,277) Segment income $ 14,668 $ 57,906 $ 30,705 $ 41,777 $ 16,004 $ 6,347 $ 167,407 Average earnings assets $ 2,451,655 $ 1,749,148 $ 2,489,948 $ 2,215,551 $ 1,525,191 $ 603,835 $ 11,035,328 The following table presents a reconciliation of the reportable segment financial information to the consolidated totals for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Net income: Total income for segments and other $ 365,237 $ 298,185 $ 167,407 Other operating expenses (1) ( 125,865) ( 107,547) ( 105,424) Income before income taxes 239,372 190,638 61,983 Income tax expense (benefit) 71,995 ( 10,970) ( 4,973) Total consolidated net income $ 167,377 $ 201,608 $ 66,956 Average assets: Total average earning assets for segments $ 11,497,408 $ 11,265,470 $ 11,035,328 Average non-earning assets 954,726 940,731 937,950 Total consolidated average assets $ 12,452,134 $ 12,206,201 $ 11,973,278 Expenses pertaining to corporate administrative functions that support the operating segment, but are not specifically attributable to or managed by any segment, are not included in the reported financial results of the operating segments. The unallocated corporate expenses include certain general and administrative expenses and related depreciation and amortization expenses. The following table presents revenues (interest income plus non-interest income) and selected balance sheet data by geography based on the location in which the transaction is originated as of indicated dates: 2019 2018 2017 (In thousands) Revenues: Puerto Rico $ 628,489 $ 581,269 $ 536,069 United States 100,213 86,991 72,424 Virgin Islands 37,767 39,017 42,317 Total consolidated revenues $ 766,469 $ 707,277 $ 650,810 Selected Balance Sheet Information: Total assets: Puerto Rico $ 10,059,890 $ 9,797,267 $ 9,871,272 United States 2,048,260 1,940,633 1,780,654 Virgin Islands 503,116 505,661 609,342 Loans: Puerto Rico $ 6,695,953 $ 6,586,033 $ 6,633,432 United States 1,879,346 1,834,088 1,665,448 Virgin Islands 466,383 481,188 584,576 Deposits: Puerto Rico (1) $ 6,422,864 $ 6,208,531 $ 6,268,056 United States (2) 1,661,657 1,519,362 1,637,941 Virgin Islands 1,263,908 1,266,821 1,116,634 For 2019, 2018, and 2017, includes $ 243.4 million, $ 441.1 million, and $ 1.0 billion, respectively, of brokered CDs allocated to Puerto Rico operations. For 2019, 2018, and 2017 includes $ 191.7 million, $ 114.5 million, and $ 158.0 million, respectively, of brokered CDs allocated to the United States operations.

FIRST BANCORP. (Holding Company

FIRST BANCORP. (Holding Company Only) Financial Information	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
FIRST BANCORP. (Holding Company Only) Financial Information [Text Block]	NOTE 37- FIRST BANCORP. (HOLDING COMPANY ONLY) FINANCIAL INFORMATION The following condensed financial information presents the financial position of First BanCorp at the holding company level only as of December 31, 2019 and 2018, and the results of its operations and cash flows for the years ended December 31, 2019, 2018, and 2017: Statements of Financial Condition As of December 31, 2019 2018 (In thousands) Assets Cash and due from banks $ 16,895 $ 10,984 Money market investments 6,211 6,111 Other investment securities 285 285 Investment in First Bank Puerto Rico, at equity 2,362,182 2,179,655 Investment in First Bank Insurance Agency, at equity 24,995 17,780 Investment in FBP Statutory Trust I 1,963 1,963 Investment in FBP Statutory Trust II 3,561 3,561 Other assets 509 12,219 Total assets $ 2,416,601 $ 2,232,558 Liabilities and Stockholders' Equity Liabilities: Other borrowings $ 184,150 $ 184,150 Accounts payable and other liabilities 4,378 3,704 Total liabilities 188,528 187,854 Stockholders' equity 2,228,073 2,044,704 Total liabilities and stockholders' equity $ 2,416,601 $ 2,232,558 Statements of Income Year Ended December 31, 2019 2018 2017 (In thousands) Income Interest income on money market investments $ 233 $ 20 $ 20 Interest income on loans - 105 - Dividend income from banking subsidiaries 42,243 37,784 7,200 Dividend income from non-banking subsidiaries - - 3,000 Other income 283 275 262 42,759 38,184 10,482 Expense Other borrowings 9,424 8,983 8,284 Other operating expenses 2,131 2,489 3,175 11,555 11,472 11,459 Gain on early extinguishment of debt - 2,316 1,391 Income before income taxes and equity in undistributed earnings of subsidiaries 31,204 29,028 414 Income tax provision 2,752 - 45 Equity in undistributed earnings of subsidiaries 138,925 172,580 66,587 Net income $ 167,377 $ 201,608 $ 66,956 Other comprehensive income (loss), net of tax 47,179 ( 19,806) 13,775 Comprehensive income $ 214,556 $ 181,802 $ 80,731 Statements of Cash Flows Year Ended December 31, 2019 2018 2017 (In thousands) Cash flows from operating activities: Net income $ 167,377 $ 201,608 $ 66,956 Adjustments to reconcile net income to net cash provided by operating activities: Stock-based compensation 314 2,202 3,769 Equity in undistributed earnings of subsidiaries ( 138,925) ( 172,580) ( 66,587) Gain on early extinguishment of debt - ( 2,316) ( 1,391) Accretion of discount on loans - ( 4) ( 14) Net decrease (increase) in other assets 11,710 ( 8,417) ( 8) Net increase (decrease) in other liabilities 526 2,890 ( 201) Net cash provided by operating activities 41,002 23,383 2,524 Cash flows from investing activities: Principal collected on loans - 191 50 Net cash provided by investing activities - 191 50 Cash flows from financing activities: Repurchase of common stock ( 1,959) ( 2,827) ( 2,497) Repayment of junior subordinated debentures - ( 21,434) ( 5,930) Dividends paid on common stock ( 30,356) ( 6,517) - Dividends paid on preferred stock ( 2,676) ( 2,676) ( 2,676) Net cash used in financing activities ( 34,991) ( 33,454) ( 11,103) Net increase (decrease) in cash and cash equivalents 6,011 ( 9,880) ( 8,529) Cash and cash equivalents at beginning of the year 17,095 26,975 35,504 Cash and cash equivalents at end of year $ 23,106 $ 17,095 $ 26,975 Cash and cash equivalents include: Cash and due from banks $ 16,895 $ 10,984 $ 20,864 Money market instruments 6,211 6,111 6,111 $ 23,106 $ 17,095 $ 26,975

SUBSEQUENT EVENTS

SUBSEQUENT EVENTS	12 Months Ended
	Dec. 31, 2019
Subsequent Events [Abstract]
SUBSEQUENT EVENTS [Text Block]	NOTE 38 – SUBSEQUENT EVENTS At the end of December 2019 and in early January 2020, the southwestern part of Puerto Rico was struck by a series of seismic events. The largest and most damaging of these events occurred on January 7, 2020, an earthquake that had a magnitude of 6.4 on the Modified Mercalli intensity scale. This earthquake and related aftershocks damaged several structures, including residences, historical buildings, and high-rise buildings in the affected areas. However, damages on the Corporation’s facilities and OREO properties in the affected areas were minor and we do not believe that such damages would be material to our financial position. In working with borrowers affected by these events, the Corporation established a relief program that may provide deferred repayment arrangements, on a case by case basis, to those consumer and residential mortgage borrowers who were current or less than 90 days delinquent as of January 7, 2020 (less than 29 days delinquent for credit cards and other consumer credit lines), as well as commercial customers current in payments as of December 31, 2019. As of the date hereof, the Corporation has entered into deferred payment arrangements on 726 consumer loans totaling $ 14.5 million, 59 residential mortgage loans totaling $ 9.2 million, and two commercial mortgage loan of $ 55.7 million. The Corporation has performed an evaluation of all other events occurring subsequent to December 31, 2019; management has determined that, other than the adoption of ASC 326, which is disclosed in Note 1 above, there were no events occurring in this period that require disclosure in or adjustment to the accompanying financial statements.

Significant Accounting Policies

Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Nature of Business [Policy Text Block]	Nature of business First BanCorp. is a publicly owned, Puerto Rico-chartered financial holding company that is subject to regulation, supervision, and examination by the Board of Governors of the Federal Reserve System (the “Federal Reserve Board”). The Corporation is a full service provider of financial services and products with operations in Puerto Rico, the United States, the U.S. Virgin Islands (the “USVI”), and the British Virgin Islands (the “BVI”). The Corporation provides a wide range of financial services for retail, commercial, and institutional clients. The Corporation has two wholly-owned subsidiaries: FirstBank Puerto Rico (“FirstBank” or the “Bank”), and FirstBank Insurance Agency, Inc. (“FirstBank Insurance Agency”). FirstBank is a Puerto Rico-chartered commercial bank, and FirstBank Insurance Agency is a Puerto Rico-chartered insurance agency. FirstBank is subject to the supervision, examination, and regulation of both the Office of the Commissioner of Financial Institutions of the Commonwealth of Puerto Rico (the “OCIF”) and the FDIC. Deposits are insured through the FDIC Deposit Insurance Fund. FirstBank also operates in the State of Florida, subject to regulation and examination by the Florida Office of Financial Regulation and the FDIC, in the USVI, subject to regulation and examination by the United States Virgin Islands Banking Board, and in the BVI, subject to regulation by the British Virgin Islands Financial Services Commission. The Consumer Financial Protection Bureau (the “CFPB”) regulates FirstBank’s consumer financial products and services. FirstBank Insurance Agency is subject to the supervision, examination, and regulation of the Office of the Insurance Commissioner of the Commonwealth of Puerto Rico and the Division of Banking and Insurance Financial Regulation in the USVI and operates four offices in Puerto Rico and two offices in the USVI. FirstBank conducts its business through its main office located in San Juan, Puerto Rico, 46 banking branches in Puerto Rico, 11 banking branches in the USVI and the BVI, and 10 banking branches in the state of Florida (USA). As of December 31, 2019, FirstBank has 5 wholly owned subsidiaries with operations in Puerto Rico: First Federal Finance Corp. (d/b/a Money Express La Financiera), a finance company specializing in the origination of small loans with 28 offices in Puerto Rico; First Management of Puerto Rico, a domestic corporation, which holds tax-exempt assets; FirstBank Overseas Corporation, an international banking entity organized under the International Banking Entity Act of Puerto Rico; and two other dormant companies formerly engaged in the operation of certain other real estate owned (“OREO”) properties.
Principles of consolidation [Policy Text Block]	Principles of consolidation The consolidated financial statements include the accounts of the Corporation and its subsidiaries. All significant intercompany balances and transactions have been eliminated in consolidation. Statutory business trusts that are wholly-owned by the Corporation and are issuers of trust-preferred securities (“TRuPs”), and entities in which the Corporation has a non-controlling interest, are not consolidated in the Corporation’s consolidated financial statements in accordance with authoritative guidance issued by the Financial Accounting Standards Board (the “FASB”) for consolidation of variable interest entities (“VIE”). See “Variable Interest Entities” below for further details regarding the Corporation’s accounting policy for these entities.
Use of estimates in the preparation of financial statements [Policy Text Block]	Use of estimates in the preparation of financial statements The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities and contingent liabilities as of the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Cash and cash equivalents [Policy Text Block]	Cash and cash equivalents For purposes of reporting cash flows, cash and cash equivalents include cash on hand, cash items in transit, and amounts due from the Federal Reserve Bank of New York (the “New York FED” or “Federal Reserve”) and other depository institutions. The term also includes money market funds and short-term investments with original maturities of three months or less.
Investment securities [Policy Text Block]	Investment securities The Corporation classifies its investments in debt and equity securities into one of four categories: Held-to-maturity — Securities that the entity has the intent and ability to hold to maturity. These securities are carried at amortized cost. The Corporation may not sell or transfer held-to-maturity securities without calling into question its intent to hold other debt securities to maturity, unless a nonrecurring or unusual event that could not have been reasonably anticipated has occurred. Trading — Securities that are bought and held principally for the purpose of selling them in the near term. These securities are carried at fair value, with unrealized gains and losses reported in earnings. As of December 31, 2019 and 2018, the Corporation did not hold investment securities for trading purposes. Available-for-sale — Securities not classified as held-to-maturity or trading. These securities are carried at fair value, with unrealized holding gains and losses, net of deferred taxes, reported in OCI as a separate component of stockholders’ equity, and do not affect earnings until they are realized or are deemed to be other-than-temporarily impaired. Equity securities — Equity securities that do not have readily available fair values are classified as equity securities in the consolidated statements of financial condition. These securities are stated at the lower of cost or realizable value. This category is principally composed of stock that is owned by the Corporation to comply with Federal Home Loan Bank (“FHLB”) regulatory requirements. Their realizable value equals their cost. Also included in this category are marketable equity securities held at fair value with changes in unrealized gains or losses recorded through earnings pursuant to the requirements of ASU 2016-01. Premiums and discounts on debt securities are amortized as an adjustment to interest income on investments over the life of the related securities under the interest method without anticipating prepayments, except for mortgage-backed securities (“MBS”) where prepayments are anticipated. Premiums on callable debt securities, if any, are amortized to the earliest call date. Net realized gains and losses and valuation adjustments considered other-than-temporary, if any, related to investment securities are determined using the specific identification method and are reported in non-interest income as net gain (loss) on sale of investments and net impairment losses on debt securities, respectively. Purchases and sales of securities are recognized on a trade-date basis.
Evaluation of other-than-temporary impairment (OTTI) on held-to-maturity and available-for-sale securities [Policy Text Block]	Evaluation of other-than-temporary impairment (“OTTI”) on held-to-maturity and available-for-sale securities On a quarterly basis, the Corporation performs an assessment to determine whether there have been any events or economic circumstances indicating that a security with an unrealized loss has suffered an OTTI. A security is considered impaired if the fair value is less than its amortized cost basis. The Corporation employs a systematic methodology that considers all available evidence in evaluating a potential impairment of its investments. The impairment analysis of debt securities places special emphasis on the analysis of the cash position of the issuer and its cash and capital generation capacity, which could increase or diminish the issuer’s ability to repay its bond obligations, the length of time and the extent to which the fair value has been less than the amortized cost basis, any adverse change to the credit conditions and liquidity of the issuer, taking into consideration the latest information available about the financial condition of the issuer, credit ratings, the failure of the issuer to make scheduled principal or interest payments, recent legislation and government actions affecting the issuer’s industry, and actions taken by the issuer to deal with the economic climate. The Corporation also takes into consideration changes in the near-term prospects of the underlying collateral of a security, if any, such as changes in default rates, loss severity given default, and significant changes in prepayment assumptions and the level of cash flows generated from the underlying collateral, if any, supporting the principal and interest payments of the debt securities. OTTI must be recognized in earnings if the Corporation has the intent to sell the debt security or it is more likely than not that it will be required to sell the debt security before recovery of its amortized cost basis. However, even if the Corporation does not expect to sell a debt security, it must evaluate expected cash flows to be received and determine if a credit loss has occurred. An unrealized loss is generally deemed to be other-than-temporary and a credit loss is deemed to exist if the present value of the expected future cash flows is less than the amortized cost basis of the debt security. For available-for-sale and held-to-maturity debt securities the Corporations intends to hold, the credit loss component of an OTTI, if any, is recorded as net impairment losses on debt securities in the consolidated statements of income, while the remaining portion of the impairment loss is recognized in OCI, net of taxes, and included as a component of stockholders’ equity. The previous amortized cost basis less the OTTI recognized in earnings is the new amortized cost basis of the investment. The new amortized cost basis is not adjusted for subsequent recoveries in fair value. Subsequent increases and decreases (if not an OTTI) in the fair value of available-for-sale securities is included in OCI. For held-to-maturity debt securities, any OTTI recognized in OCI should be accreted from OCI to the amortized cost of the debt security over the remaining life of the debt security. However, for debt securities for which OTTI was recognized in earnings, the difference between the new amortized cost basis and the cash flows expected to be collected is accreted as interest income as long as the security is not placed in nonaccrual status. Debt securities held by the Corporation at year-end primarily consisted of securities issued by U.S. government-sponsored entities (“GSEs”), private label MBS, certain bonds issued by the Puerto Rico Housing Finance Authority, a government instrumentality of the Commonwealth of Puerto Rico, and obligations of certain municipalities in Puerto Rico. Given the explicit and implicit guarantees provided by the U.S. federal government, the Corporation believes the credit risk in securities issued by the GSEs is low. The Corporation’s OTTI assessment was concentrated on Puerto Rico government debt securities and private label MBS. For further information, including the methodology and assumptions used for the discounted cash flow analyses performed on these securities, refer to Note 6 – Investment Securities, to the consolidated financial statements. In addition, refer to Recently Issued Accounting Standards Not Yet Effective – Accounting for Financial Instruments – Credit Losses below for information about the adoption in 2020 of ASU 2016-13, Financial Instruments – Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments (“ASC 326”), that modifies the OTTI model for available-for-sale debt securities to require an allowance for credit impairment instead of a direct write-down to the amortized cost of the debt securities, which allows for reversal of credit impairments in future periods based on improvements in credit. ASC 326 also requires the Corporation to estimate an allowance for credit losses for the estimated life of certain financial assets, including held to maturity securities.
Loans held for investment [Policy Text Block]	Loans held for investment Loans that the Corporation has the ability and intent to hold for the foreseeable future are classified as held for investment. The substantial majority of the Corporation’s loans are classified as held for investment. Loans are stated at the principal outstanding balance, net of unearned interest, cumulative charge-offs, unamortized deferred origination fees and costs, and unamortized premiums and discounts. Fees collected and costs incurred in the origination of new loans are deferred and amortized using the interest method or a method that approximates the interest method over the term of the loan as an adjustment to interest yield. Unearned interest on certain personal loans, auto loans and finance leases and discounts and premiums are recognized as income under a method that approximates the interest method. When a loan is paid-off or sold, any unamortized net deferred fee (cost) is credited (charged) to income. Credit card loans are reported at their outstanding unpaid principal balance plus uncollected billed interest and fees net of amounts deemed uncollectible. Purchased Credit Impaired (“PCI”) loans are reported net of any remaining purchase accounting adjustments. See “Loans Acquired” below for the accounting policy for PCI loans. Nonaccrual and Past-Due Loans - Loans on which the recognition of interest income has been discontinued are designated as nonaccrual. Loans are classified as nonaccrual when they are 90 days past due for interest and principal, with the exception of residential mortgage loans guaranteed by the Federal Housing Administration (the “FHA”) or the Veterans Administration (the “VA”) and credit cards. It is the Corporation’s policy to report delinquent mortgage loans insured by the FHA, or guaranteed by the VA or the Puerto Rico Housing Authority, as loans past due 90 days and still accruing as opposed to nonaccrual loans since the principal repayment is insured. However, the Corporation discontinues the recognition of income relating to FHA/VA loans when such loans are over 15 months delinquent, taking into consideration the FHA interest curtailment process, and relating to loans guaranteed by the Puerto Rico Housing Finance Authority when such loans are over 90 days delinquent. As permitted by regulatory guidance issued by the Federal Financial Institutions Examination Council, credit card loans are generally charged off in the period in which the account becomes 180 days past due. Credit card loans continue to accrue finance charges and fees until charged off at 180 days. Loans generally may be placed on nonaccrual status prior to when required by the policies described above when the full and timely collection of interest or principal becomes uncertain (generally based on an assessment of the borrower’s financial condition and the adequacy of collateral, if any). When a loan is placed on nonaccrual status, any accrued but uncollected interest income is reversed and charged against interest income and amortization of any net deferred fees is suspended. Interest income on nonaccrual loans is recognized only to the extent it is received in cash. However, when there is doubt regarding the ultimate collectability of loan principal, all cash thereafter received is applied to reduce the carrying value of such loans ( i.e. , the cost recovery method). Generally, the Corporation returns a loan to accrual status when all delinquent interest and principal becomes current under the terms of the loan agreement, or after a sustained period of repayment performance ( 6 months) and the loan is well secured and in the process of collection, and full repayment of the remaining contractual principal and interest is expected. PCI loans are not reported as nonaccrual as these loans were written down to fair value at the acquisition date and the accretable yield is recognized in interest income over the remaining life of the loans. Loans that are past due 30 days or more as to principal or interest are considered delinquent, with the exception of residential mortgage, commercial mortgage, and construction loans, which are considered past due when the borrower is in arrears on two or more monthly payments. Impaired Loans - A loan is considered impaired when, based upon current information and events, it is probable that the Corporation will be unable to collect all amounts due (including principal and interest) according to the contractual terms of the loan agreement, or the loan has been modified in a Troubled Debt Restructuring (“TDR”). Loans with insignificant delays or insignificant shortfalls in the amounts of payments expected to be collected are not considered to be impaired. The Corporation individually evaluates for impairment those loans in the construction, commercial mortgage, and commercial and industrial portfolios of $ 1 million or more as well as any boat loan of $ 1 million or more. Although the authoritative accounting guidance for a specific impairment of a loan excludes large groups of smaller balance homogeneous loans that are collectively evaluated for impairment ( e.g. , mortgage and consumer loans), it specifically requires that loan modifications considered TDRs be analyzed under its provision. The Corporation also evaluates for impairment purposes certain residential mortgage loans and home equity lines of credit with high delinquency and loan to value levels. Held-for-sale loans are not reported as impaired, as these loans are recorded at the lower of cost or fair value. The Corporation generally measures impairment and the related specific allowance for individually impaired loans based on the difference between the recorded investment of the loan and the present value of the loans’ expected future cash flows, discounted at the effective original interest rate of the loan at the time of modification, or the loan’s observable market price. If the loan is collateral dependent, the Corporation measures impairment based upon the fair value of the underlying collateral, instead of discounted cash flows, regardless of whether foreclosure is probable. Loans are identified as collateral dependent if the repayment is expected to be provided solely by the underlying collateral, through liquidation or operation of the collateral. When the fair value of the collateral is used to measure impairment on an impaired collateral-dependent loan and repayment or satisfaction of the loan is dependent on the sale of the collateral, the fair value of the collateral is adjusted to consider estimated costs to sell. If repayment is dependent only on the operation of the collateral, the fair value of the collateral is not adjusted for estimated costs to sell. If the fair value of the loan is less than the recorded investment, the Corporation recognizes impairment by either a direct write-down or establishing a specific allowance for the loan or by adjusting the previously-established specific allowance for the impaired loan. For an impaired loan that is collateral dependent, charge-offs are taken in the period in which the loan, or a portion of the loan, is deemed uncollectible, and any portion of the loan that is not charged off is adversely credit-risk rated at a level no better than substandard. A restructuring of a loan constitutes a TDR if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. TDR loans typically result from the Corporation’s loss mitigation activities and the modification of residential mortgage loans in accordance with guidelines similar to those of the U.S. government’s Home Affordable Modification Program, and could include rate reductions to a rate that is below market on the loan, principal forgiveness, term extensions, payment forbearance, refinancing of any past-due amounts, including interest, escrow, and late charges and fees, and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of collateral. Residential mortgage loans for which a binding offer to restructure has been extended are also classified as TDR loans. PCI loans are not classified as TDR loans. TDR loans are classified as either accrual or nonaccrual loans. Loans in accrual status may remain in accrual status when their contractual terms have been modified in a TDR if the loans had demonstrated performance prior to the restructuring and payment in full under the restructured terms is expected. Otherwise, loans on nonaccrual and restructured as a TDR will remain on nonaccrual status until the borrower has proven the ability to perform under the modified structure, generally for a minimum of six months, and there is evidence that such payments, can, and are likely to, continue as agreed. Refer to Note 9 – Loans Held for Investment, to the consolidated financial statements, for additional qualitative and quantitative information about TDR loans. In connection with commercial loan restructurings, the decision to maintain a loan that has been restructured on accrual status is based on a current, well-documented credit evaluation of the borrower’s financial condition and prospects for repayment under the modified terms. The credit evaluation reflects consideration of the borrower’s future capacity to pay, which may include evaluation of cash flow projections, consideration of the adequacy of collateral to cover all principal and interest, and trends indicating improving profitability and collectability of receivables. This evaluation also includes an evaluation of the borrower’s current willingness to pay, which may include a review of past payment history, an evaluation of the borrower’s willingness to provide information on a timely basis, and consideration of offers from the borrower to provide additional collateral or guarantor support. The evaluation of mortgage and consumer loans for restructurings includes an evaluation of the client’s disposable income and credit report, the value of the property, the loan-to-value relationship, and certain other client-specific factors that have affected the borrower’s ability to make timely principal and interest payments on the loan. The Corporation removes loans from TDR classification, consistent with authoritative accounting guidance that allows for a loan to be removed from the TDR classification in years following the modification, only when the following two circumstances are met:  The loan is in compliance with the terms of the restructuring agreement and, therefore, is not considered impaired under the revised terms; and  The loan yields a market interest rate at the time of the restructuring. In other words, the loan was restructured with an interest rate equal to or greater than what the Corporation would have been willing to accept at the time of the restructuring for a new loan with comparable risk. If both of the conditions are met, the loan can be removed from the TDR classification in calendar years after the year in which the restructuring took place. However, the loan continues to be individually evaluated for impairment. Loans classified as TDRs, including loans in trial payment periods (trial modifications), are considered impaired loans. With respect to the restructuring of a loan into two new loan notes, or loan splits, generally Note A of a loan split is restructured under market terms, and Note B is fully charged off. A partial charge-off may be recorded if Note B is collateral dependent and the source of repayment is independent of Note A. If Note A is in compliance with the restructured terms in years following the restructuring, Note A will be removed from the TDR classification and will continue to be individually evaluated for impairment. Refer to Note 9 – Loans Held for Investment, to the consolidated financial statements, for additional information about loan splits. A loan that had previously been modified in a TDR and is subsequently refinanced under then-current underwriting standards at a market rate with no concessionary terms is accounted for as a new loan and is no longer reported as a TDR. Interest income on impaired loans is recognized based on the Corporation’s policy for recognizing interest on accrual and nonaccrual loans. Loans Acquired - All purchased loans are recorded at fair value at the date of acquisition. Loans acquired with evidence of credit deterioration since their origination and where it is probable at the date of acquisition that the Corporation will not collect all contractually required principal and interest payments are considered PCI loans. Evidence of credit quality deterioration as of the purchase date may include statistics such as past due and nonaccrual status, credit scores, and modified loan terms. PCI loans have been aggregated into pools based on common risk characteristics. Each pool is accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows. In accounting for PCI loans, the difference between contractually required payments and the cash flows expected to be collected at acquisition is referred to as the nonaccretable difference. The nonaccretable difference, which is neither accreted into income nor recorded on the consolidated statements of financial condition, reflects estimated future credit losses expected to be incurred over the life of the pool of loans. The excess of cash flows expected to be collected over the estimated fair value of PCI loans is referred to as the accretable yield. This amount is not recorded on the statements of financial condition, but is accreted into interest income over the remaining life of the pool of loans, using the effective-yield method. Subsequent to acquisition, the Corporation continues to estimate cash flows expected to be collected over the life of the PCI loans using models that incorporate current key assumptions, such as default rates, loss severity, and prepayment speeds. Decreases in expected cash flows will generally result in an impairment charge to the provision for loan and lease losses and the establishment of an allowance for loan and lease losses. Increases in expected cash flows will generally result in a reduction in any allowance for loan and lease losses established subsequent to acquisition and an increase in the accretable yield. The adjusted accretable yield is recognized in interest income over the remaining life of the pool of loans. Resolutions of loans may include sales of loans to third parties, receipt of payments in settlement with the borrower, or foreclosure of the collateral. The Corporation’s policy is to remove an individual loan from a pool at its relative carrying amount. The carrying amount is defined as the loan’s current contractually required payments receivable less its remaining nonaccretable difference and accretable yield, but excluding any post-acquisition loan loss allowance. To determine the carrying value, the Corporation performs a pro-rata allocation of the pool’s total remaining nonaccretable difference and accretable yield to an individual loan in proportion to the loan’s current contractually required payments receivable compared to the pool’s total contractually required payments receivable. This removal method assumes that the amount received from a PCI loan resolution approximates pool performance expectations. The remaining accretable yield balance is unaffected and any material change in the remaining effective yield caused by this removal method is addressed by the Corporation’s quarterly cash flow evaluation process for each pool. Modified PCI loans are not removed from a pool even if those loans would otherwise be deemed TDRs. Because the initial fair value of PCI loans recorded at acquisition includes an estimate of credit losses expected to be realized over the remaining lives of the loans, the Corporation separately tracks and reports PCI loans and excludes these loans from its nonaccrual loan statistics. For acquired loans that are not deemed impaired at acquisition, subsequent to acquisition, the Corporation recognizes the difference between the initial fair value at acquisition and the undiscounted expected cash flows in interest income over the period in which substantially all of the inherent losses associated with the non-PCI loans at the acquisition date are estimated to occur. Thus, such loans are accounted for consistently with other originated loans, potentially being classified as nonaccrual or impaired, as well as being classified under the Corporation’s standard practices and procedures. In addition, these loans are considered in the determination of the allowance for loan losses. Refer to Recently Issued Accounting Standards Not Yet Effective – Accounting for Financial Instruments – Credit Losses below for information about the adoption in 2020 of ASC 326 that eliminates the existing guidance for PCI loans, but requires an allowance for purchased financial assets with more than insignificant deterioration since origination. Charge-off of Uncollectible Loans - Net charge-offs consist of the unpaid principal balances of loans held for investment that the Corporation determines are uncollectible, net of recovered amounts. Charge-offs are recorded as a reduction to the allowance for loan and lease losses and subsequent recoveries of previously charged-off amounts are credited to the allowance for loan and lease losses. Collateral dependent loans in the construction, commercial mortgage, and commercial and industrial loan portfolios are charged off to their net realizable value (fair value of collateral, less estimated costs to sell) when loans are considered to be uncollectible. Within the consumer loan portfolio, auto loans and finance leases are reserved once they are 120 days delinquent and are charged off to their estimated net realizable value when the collateral deficiency is deemed uncollectible ( i.e. , when foreclosure/repossession is probable) or when the loan is 365 days past due. Within the other consumer loan portfolio, closed-end loans are charged off when payments are 120 days in arrears, except small personal loans. Open-end (revolving credit) consumer loans, including credit card loans, and small personal loans are charged off when payments are 180 days in arrears. On a quarterly basis, residential mortgage loans that are 180 days delinquent and have an original loan-to-value ratio that is higher than 60% are reviewed and charged-off, as needed, to the fair value of the underlying collateral. Generally, all loans may be charged off or written down to the fair value of the collateral prior to the application of the policies described above if a loss-confirming event has occurred. Loss-confirming events include, but are not limited to, bankruptcy (unsecured), continued delinquency, or receipt of an asset valuation indicating a collateral deficiency when the asset is the sole source of repayment. The Corporation does not record charge-offs on PCI loans that are performing in accordance with or better than expectations as of the date of acquisition, as the fair value of these loans already reflects a credit component. The Corporation records charge-offs on PCI loans only if actual losses exceed estimated losses incorporated into the fair value recorded at acquisition and the amount is deemed uncollectible.
Nonaccrual and Past Due Loans [Policy Text Block]	Nonaccrual and Past-Due Loans - Loans on which the recognition of interest income has been discontinued are designated as nonaccrual. Loans are classified as nonaccrual when they are 90 days past due for interest and principal, with the exception of residential mortgage loans guaranteed by the Federal Housing Administration (the “FHA”) or the Veterans Administration (the “VA”) and credit cards. It is the Corporation’s policy to report delinquent mortgage loans insured by the FHA, or guaranteed by the VA or the Puerto Rico Housing Authority, as loans past due 90 days and still accruing as opposed to nonaccrual loans since the principal repayment is insured. However, the Corporation discontinues the recognition of income relating to FHA/VA loans when such loans are over 15 months delinquent, taking into consideration the FHA interest curtailment process, and relating to loans guaranteed by the Puerto Rico Housing Finance Authority when such loans are over 90 days delinquent. As permitted by regulatory guidance issued by the Federal Financial Institutions Examination Council, credit card loans are generally charged off in the period in which the account becomes 180 days past due. Credit card loans continue to accrue finance charges and fees until charged off at 180 days. Loans generally may be placed on nonaccrual status prior to when required by the policies described above when the full and timely collection of interest or principal becomes uncertain (generally based on an assessment of the borrower’s financial condition and the adequacy of collateral, if any). When a loan is placed on nonaccrual status, any accrued but uncollected interest income is reversed and charged against interest income and amortization of any net deferred fees is suspended. Interest income on nonaccrual loans is recognized only to the extent it is received in cash. However, when there is doubt regarding the ultimate collectability of loan principal, all cash thereafter received is applied to reduce the carrying value of such loans ( i.e. , the cost recovery method). Generally, the Corporation returns a loan to accrual status when all delinquent interest and principal becomes current under the terms of the loan agreement, or after a sustained period of repayment performance ( 6 months) and the loan is well secured and in the process of collection, and full repayment of the remaining contractual principal and interest is expected. PCI loans are not reported as nonaccrual as these loans were written down to fair value at the acquisition date and the accretable yield is recognized in interest income over the remaining life of the loans. Loans that are past due 30 days or more as to principal or interest are considered delinquent, with the exception of residential mortgage, commercial mortgage, and construction loans, which are considered past due when the borrower is in arrears on two or more monthly payments. Charge-off of Uncollectible Loans - Net charge-offs consist of the unpaid principal balances of loans held for investment that the Corporation determines are uncollectible, net of recovered amounts. Charge-offs are recorded as a reduction to the allowance for loan and lease losses and subsequent recoveries of previously charged-off amounts are credited to the allowance for loan and lease losses. Collateral dependent loans in the construction, commercial mortgage, and commercial and industrial loan portfolios are charged off to their net realizable value (fair value of collateral, less estimated costs to sell) when loans are considered to be uncollectible. Within the consumer loan portfolio, auto loans and finance leases are reserved once they are 120 days delinquent and are charged off to their estimated net realizable value when the collateral deficiency is deemed uncollectible ( i.e. , when foreclosure/repossession is probable) or when the loan is 365 days past due. Within the other consumer loan portfolio, closed-end loans are charged off when payments are 120 days in arrears, except small personal loans. Open-end (revolving credit) consumer loans, including credit card loans, and small personal loans are charged off when payments are 180 days in arrears. On a quarterly basis, residential mortgage loans that are 180 days delinquent and have an original loan-to-value ratio that is higher than 60% are reviewed and charged-off, as needed, to the fair value of the underlying collateral. Generally, all loans may be charged off or written down to the fair value of the collateral prior to the application of the policies described above if a loss-confirming event has occurred. Loss-confirming events include, but are not limited to, bankruptcy (unsecured), continued delinquency, or receipt of an asset valuation indicating a collateral deficiency when the asset is the sole source of repayment. The Corporation does not record charge-offs on PCI loans that are performing in accordance with or better than expectations as of the date of acquisition, as the fair value of these loans already reflects a credit component. The Corporation records charge-offs on PCI loans only if actual losses exceed estimated losses incorporated into the fair value recorded at acquisition and the amount is deemed uncollectible.
Impaired Loans [Policy Text Block]	Impaired Loans - A loan is considered impaired when, based upon current information and events, it is probable that the Corporation will be unable to collect all amounts due (including principal and interest) according to the contractual terms of the loan agreement, or the loan has been modified in a Troubled Debt Restructuring (“TDR”). Loans with insignificant delays or insignificant shortfalls in the amounts of payments expected to be collected are not considered to be impaired. The Corporation individually evaluates for impairment those loans in the construction, commercial mortgage, and commercial and industrial portfolios of $ 1 million or more as well as any boat loan of $ 1 million or more. Although the authoritative accounting guidance for a specific impairment of a loan excludes large groups of smaller balance homogeneous loans that are collectively evaluated for impairment ( e.g. , mortgage and consumer loans), it specifically requires that loan modifications considered TDRs be analyzed under its provision. The Corporation also evaluates for impairment purposes certain residential mortgage loans and home equity lines of credit with high delinquency and loan to value levels. Held-for-sale loans are not reported as impaired, as these loans are recorded at the lower of cost or fair value. The Corporation generally measures impairment and the related specific allowance for individually impaired loans based on the difference between the recorded investment of the loan and the present value of the loans’ expected future cash flows, discounted at the effective original interest rate of the loan at the time of modification, or the loan’s observable market price. If the loan is collateral dependent, the Corporation measures impairment based upon the fair value of the underlying collateral, instead of discounted cash flows, regardless of whether foreclosure is probable. Loans are identified as collateral dependent if the repayment is expected to be provided solely by the underlying collateral, through liquidation or operation of the collateral. When the fair value of the collateral is used to measure impairment on an impaired collateral-dependent loan and repayment or satisfaction of the loan is dependent on the sale of the collateral, the fair value of the collateral is adjusted to consider estimated costs to sell. If repayment is dependent only on the operation of the collateral, the fair value of the collateral is not adjusted for estimated costs to sell. If the fair value of the loan is less than the recorded investment, the Corporation recognizes impairment by either a direct write-down or establishing a specific allowance for the loan or by adjusting the previously-established specific allowance for the impaired loan. For an impaired loan that is collateral dependent, charge-offs are taken in the period in which the loan, or a portion of the loan, is deemed uncollectible, and any portion of the loan that is not charged off is adversely credit-risk rated at a level no better than substandard.
TDR loans [Policy Text Block]	A restructuring of a loan constitutes a TDR if the creditor, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. TDR loans typically result from the Corporation’s loss mitigation activities and the modification of residential mortgage loans in accordance with guidelines similar to those of the U.S. government’s Home Affordable Modification Program, and could include rate reductions to a rate that is below market on the loan, principal forgiveness, term extensions, payment forbearance, refinancing of any past-due amounts, including interest, escrow, and late charges and fees, and other actions intended to minimize the economic loss and to avoid foreclosure or repossession of collateral. Residential mortgage loans for which a binding offer to restructure has been extended are also classified as TDR loans. PCI loans are not classified as TDR loans. TDR loans are classified as either accrual or nonaccrual loans. Loans in accrual status may remain in accrual status when their contractual terms have been modified in a TDR if the loans had demonstrated performance prior to the restructuring and payment in full under the restructured terms is expected. Otherwise, loans on nonaccrual and restructured as a TDR will remain on nonaccrual status until the borrower has proven the ability to perform under the modified structure, generally for a minimum of six months, and there is evidence that such payments, can, and are likely to, continue as agreed. Refer to Note 9 – Loans Held for Investment, to the consolidated financial statements, for additional qualitative and quantitative information about TDR loans. In connection with commercial loan restructurings, the decision to maintain a loan that has been restructured on accrual status is based on a current, well-documented credit evaluation of the borrower’s financial condition and prospects for repayment under the modified terms. The credit evaluation reflects consideration of the borrower’s future capacity to pay, which may include evaluation of cash flow projections, consideration of the adequacy of collateral to cover all principal and interest, and trends indicating improving profitability and collectability of receivables. This evaluation also includes an evaluation of the borrower’s current willingness to pay, which may include a review of past payment history, an evaluation of the borrower’s willingness to provide information on a timely basis, and consideration of offers from the borrower to provide additional collateral or guarantor support. The evaluation of mortgage and consumer loans for restructurings includes an evaluation of the client’s disposable income and credit report, the value of the property, the loan-to-value relationship, and certain other client-specific factors that have affected the borrower’s ability to make timely principal and interest payments on the loan. The Corporation removes loans from TDR classification, consistent with authoritative accounting guidance that allows for a loan to be removed from the TDR classification in years following the modification, only when the following two circumstances are met:  The loan is in compliance with the terms of the restructuring agreement and, therefore, is not considered impaired under the revised terms; and  The loan yields a market interest rate at the time of the restructuring. In other words, the loan was restructured with an interest rate equal to or greater than what the Corporation would have been willing to accept at the time of the restructuring for a new loan with comparable risk. If both of the conditions are met, the loan can be removed from the TDR classification in calendar years after the year in which the restructuring took place. However, the loan continues to be individually evaluated for impairment. Loans classified as TDRs, including loans in trial payment periods (trial modifications), are considered impaired loans. With respect to the restructuring of a loan into two new loan notes, or loan splits, generally Note A of a loan split is restructured under market terms, and Note B is fully charged off. A partial charge-off may be recorded if Note B is collateral dependent and the source of repayment is independent of Note A. If Note A is in compliance with the restructured terms in years following the restructuring, Note A will be removed from the TDR classification and will continue to be individually evaluated for impairment. Refer to Note 9 – Loans Held for Investment, to the consolidated financial statements, for additional information about loan splits. A loan that had previously been modified in a TDR and is subsequently refinanced under then-current underwriting standards at a market rate with no concessionary terms is accounted for as a new loan and is no longer reported as a TDR. Interest income on impaired loans is recognized based on the Corporation’s policy for recognizing interest on accrual and nonaccrual loans.
Loans Acquired [Policy Text Block]	Loans Acquired - All purchased loans are recorded at fair value at the date of acquisition. Loans acquired with evidence of credit deterioration since their origination and where it is probable at the date of acquisition that the Corporation will not collect all contractually required principal and interest payments are considered PCI loans. Evidence of credit quality deterioration as of the purchase date may include statistics such as past due and nonaccrual status, credit scores, and modified loan terms. PCI loans have been aggregated into pools based on common risk characteristics. Each pool is accounted for as a single asset with a single composite interest rate and an aggregate expectation of cash flows. In accounting for PCI loans, the difference between contractually required payments and the cash flows expected to be collected at acquisition is referred to as the nonaccretable difference. The nonaccretable difference, which is neither accreted into income nor recorded on the consolidated statements of financial condition, reflects estimated future credit losses expected to be incurred over the life of the pool of loans. The excess of cash flows expected to be collected over the estimated fair value of PCI loans is referred to as the accretable yield. This amount is not recorded on the statements of financial condition, but is accreted into interest income over the remaining life of the pool of loans, using the effective-yield method. Subsequent to acquisition, the Corporation continues to estimate cash flows expected to be collected over the life of the PCI loans using models that incorporate current key assumptions, such as default rates, loss severity, and prepayment speeds. Decreases in expected cash flows will generally result in an impairment charge to the provision for loan and lease losses and the establishment of an allowance for loan and lease losses. Increases in expected cash flows will generally result in a reduction in any allowance for loan and lease losses established subsequent to acquisition and an increase in the accretable yield. The adjusted accretable yield is recognized in interest income over the remaining life of the pool of loans. Resolutions of loans may include sales of loans to third parties, receipt of payments in settlement with the borrower, or foreclosure of the collateral. The Corporation’s policy is to remove an individual loan from a pool at its relative carrying amount. The carrying amount is defined as the loan’s current contractually required payments receivable less its remaining nonaccretable difference and accretable yield, but excluding any post-acquisition loan loss allowance. To determine the carrying value, the Corporation performs a pro-rata allocation of the pool’s total remaining nonaccretable difference and accretable yield to an individual loan in proportion to the loan’s current contractually required payments receivable compared to the pool’s total contractually required payments receivable. This removal method assumes that the amount received from a PCI loan resolution approximates pool performance expectations. The remaining accretable yield balance is unaffected and any material change in the remaining effective yield caused by this removal method is addressed by the Corporation’s quarterly cash flow evaluation process for each pool. Modified PCI loans are not removed from a pool even if those loans would otherwise be deemed TDRs. Because the initial fair value of PCI loans recorded at acquisition includes an estimate of credit losses expected to be realized over the remaining lives of the loans, the Corporation separately tracks and reports PCI loans and excludes these loans from its nonaccrual loan statistics. For acquired loans that are not deemed impaired at acquisition, subsequent to acquisition, the Corporation recognizes the difference between the initial fair value at acquisition and the undiscounted expected cash flows in interest income over the period in which substantially all of the inherent losses associated with the non-PCI loans at the acquisition date are estimated to occur. Thus, such loans are accounted for consistently with other originated loans, potentially being classified as nonaccrual or impaired, as well as being classified under the Corporation’s standard practices and procedures. In addition, these loans are considered in the determination of the allowance for loan losses. Refer to Recently Issued Accounting Standards Not Yet Effective – Accounting for Financial Instruments – Credit Losses below for information about the adoption in 2020 of ASC 326 that eliminates the existing guidance for PCI loans, but requires an allowance for purchased financial assets with more than insignificant deterioration since origination.
Loans held for sale [Policy Text Block]	Loans held for sale Loans that the Corporation intends to sell or that the Corporation does not have the ability and intent to hold for the foreseeable future are classified as held-for-sale loans. Loans held for sale are recorded at the lower of aggregate cost or fair value. Generally, the loans held-for-sale portfolio consists of conforming residential mortgage loans that the Corporation intends to sell to the Government National Mortgage Association (“GNMA”) and GSEs, such as the Federal National Mortgage Association (“FNMA”) and the U.S. Federal Home Loan Mortgage Corporation (“FHLMC”). Generally, residential mortgage loans held for sale are valued on an aggregate portfolio basis and the value is primarily derived from quotations based on the MBS market. The amount by which cost exceeds market value in the aggregate portfolio of loans held for sale, if any, is accounted for as a valuation allowance with changes therein included in the determination of net income and reported as part of mortgage banking activities in the consolidated statements of income. Loan costs and fees are deferred at origination and are recognized in income at the time of sale. The fair value of commercial and construction loans held for sale, if any, is primarily derived from external appraisals, or broker price opinions that the Corporation considers, with changes in the valuation allowance reported as part of other non-interest income in the consolidated statements of income. In certain circumstances, the Corporation transfers loans from/to held for sale or held for investment based on a change in strategy. If such a change in holding strategy is made, significant adjustments to the loans’ carrying values may be necessary. Reclassifications of loans held for investment to held for sale are made at the lower of cost or fair value on the date of transfer and establish a new cost basis upon transfer. Write-downs of loans transferred from held for investment to held for sale are recorded as charge-offs at the time of transfer. Subsequent changes in value below amortized cost are reflected in non-interest income. Reclassifications of loans held for sale to held for investment are made at the lower cost or fair value on the transfer date.
Allowance for loan and lease losses [Policy Text Block]	Allowance for loan and lease losses The Corporation maintains the allowance for loan and lease losses at a level considered adequate to absorb incurred losses that are considered to be inherent in the loan and lease portfolio at that time. The Corporation does not maintain an allowance for held-for-sale loans or PCI loans that are performing in accordance with or better than expectations as of the date of acquisition, as the fair values of these loans already reflect a credit component. The allowance for loan and lease losses provides for probable incurred losses that have been identified with specific valuation allowances for individually evaluated impaired loans and for probable incurred losses believed to be inherent in the loan portfolio that have not been specifically identified. The determination of the allowance for loan and lease losses requires significant estimates, including with respect to the timing and amounts of expected future cash flows on impaired loans, consideration of current economic conditions and business strategies, and historical loss experience pertaining to the portfolios and pools of homogeneous loans, all of which may be susceptible to change. The Corporation evaluates the need for changes to the allowance by portfolio loan segments and classes of loans within certain of those portfolio segments. The Corporation combines loans with similar credit risk characteristics into the following portfolio segments: commercial mortgage, construction, commercial and industrial, residential mortgage, and consumer loans. Classes are usually disaggregations of the portfolio segments. The classes within the residential mortgage segment are residential mortgages guaranteed by the U.S. government and other residential loans. The classes within the consumer portfolio are auto loans, finance leases, and other consumer loans. Other consumer loans mainly include unsecured personal loans, credit cards, home equity lines, lines of credits, and boat loans. The classes within the construction loan portfolio are land loans, construction of commercial projects, and construction of residential projects. The commercial mortgage and commercial and industrial segments are not further segmented into classes. The adequacy of the allowance for loan and lease losses is based on judgments related to the credit quality of each portfolio segment. These judgments consider ongoing evaluations of each portfolio segment, including such factors as the economic risks associated with each loan class, the financial condition of specific borrowers, the geography (Puerto Rico, Florida or the Virgin Islands), the level of delinquent loans, historical loss experience, the value of any collateral and, where applicable, the existence of any guarantees or other documented support. In addition to the general economic conditions and other factors described above, additional factors considered include the internal risk ratings assigned to loans. An internal risk rating is assigned to each commercial and construction loan at the time of approval and is subject to subsequent periodic review by the Corporation's senior management. The allowance for loan and lease losses is reviewed on a quarterly basis as part of the Corporation’s continued evaluation of its asset quality. The allowance for loan and lease losses is increased through a provision for credit losses that is charged to earnings, based on the quarterly evaluation of the factors previously mentioned, and is reduced by charge-offs, net of recoveries. The allowance for loan and lease losses consists of specific reserves based upon valuations of loans considered to be impaired and general reserves. A specific valuation allowance is established for individual impaired loans in the commercial mortgage, construction, and commercial and industrial portfolios and certain boat loans, residential mortgage loans, and home equity lines of credit, primarily when the collateral value of the loan (if the impaired loan is determined to be collateral dependent) or the present value of the expected future cash flows discounted at the loan’s effective rate is lower than the carrying amount of that loan. The loans within the commercial mortgage, construction, commercial and industrial portfolios, and boat loans of $ 1 million or more are individually evaluated for impairment. Also, certain residential mortgage loans and home equity lines of credit are individually evaluated for impairment purposes based on their delinquency and loan to value levels. When foreclosure of a collateral dependent loan is probable, the impairment measure is based on the fair value of the collateral, less estimated costs to sell. The fair value of the collateral is generally obtained from appraisals. Updated appraisals are obtained when the Corporation determines that loans are impaired and are generally updated annually thereafter according to the Corporation’s appraisal policy. In addition, appraisals and/or appraiser price opinions are also obtained for residential mortgage loans based on specific characteristics, such as delinquency levels, age of the appraisal, and loan-to-value ratios. The excess of the recorded investment in a collateral dependent loan over the resulting fair value of the collateral is charged-off when deemed uncollectible. For all other loans, which include small, homogeneous loans, such as auto loans, and the other classes in the consumer loan portfolio, residential mortgages and commercial and construction loans that are not individually evaluated for impairment, the Corporation maintains a general valuation allowance established through a process that begins with estimates of incurred losses based upon various statistical analyses. The general reserve is primarily determined by applying loss factors according to the loan type and assigned risk category (pass, special mention, substandard, and doubtful loans that are not considered to be impaired). The Corporation uses a roll-rate methodology to estimate losses on its consumer loan portfolio based on delinquencies and considering credit bureau score bands. The Corporation tracks the historical portfolio performance to arrive at a weighted-average distribution in each subgroup of each delinquency bucket. Roll-to-loss rates (loss factors) are calculated by multiplying the roll rates from each subgroup within the delinquency buckets forward through loss. Once roll rates are calculated, the resulting loss factor is applied to the existing receivables in the applicable subgroups within the delinquency buckets and the end results are aggregated to arrive at the required allowance level. The Corporation’s assessment also involves evaluating key qualitative and environmental factors, which include credit and macroeconomic indicators such as unemployment, bankruptcy trends, recent market transactions, and collateral values to account for current market conditions that are likely to cause estimated credit losses to differ from historical loss experience. The Corporation analyzes the expected delinquency migration to determine the future volume of delinquencies. The cash flow analysis for each residential mortgage pool is performed at the individual loan level and then aggregated to the pool level in determining the overall loss ratio (the “base methodology”). The model applies risk-adjusted prepayment curves, default curves, and severity curves to each loan in the pool. For loan restructuring pools, the present value of future cash flows under the new terms, at the loan’s effective interest rate, is taken into consideration. Additionally, estimates of default risk and prepayments related to loan restructurings are based on, among other things, the historical experience of these loans. Loss severity is affected by the house price scenario, which is based in part on recent house price trends. Default curves are used in the model. The attributes that are most significant to the probability of default include present collection status (current, delinquent, in bankruptcy, in foreclosure stage), vintage, loan-to-values, and geography (Puerto Rico, Florida or the Virgin Islands). The estimates of the risk-adjusted timing of liquidations and associated costs are used in the model, and are risk-adjusted for the geographic area in which each property is located. For commercial loans, the Corporation calculates historical charge-off rates on a quarterly basis for each commercial loan regulatory-based credit risk category ( i.e. pass, special mention, substandard, and doubtful) using the historical charge-offs and portfolio balances over their average loss emergence period (the “raw loss rate”) for each credit risk classification. However, when not enough loss experience is observed in a particular risk-rated category and the calculation results in a loss rate for such risk-rated category that is lower than the loss rate of a less severe risk-rated category, the Corporation uses the loss rate of such less severe category. A qualitative factor adjustment is applied to the base rate average derived from a set of risk-based ratings and weights assigned to credit and economic indicators over a reasonable period applied to a developed expected range of historical losses and a basis point adjustment that is derived from the difference between the average raw loss rate and the highest loss rate observed during a look-back period that management determined was appropriate to use for each region to identify any relevant effect during an economic cycle. During 2017, management established a separate qualitative element of the allowance to estimate inherent losses associated with the effect of Hurricanes Irma and Maria on the Corporation’s loan portfolios in the Puerto Rico and Virgin Islands regions. This qualitative element of the allowance was initially determined based on the estimated effect that the hurricanes could have on employment levels ( e.g. , an unemployment rate that significantly increases from levels in Puerto Rico at the time of the hurricanes based on statistics observed in the aftermath of similar natural disasters in the U.S. mainland like Hurricane Katrina), economic activity in the Corporation’s geographic regions, and the time it could take for the affected regions to return to a more normalized operating environment. For large commercial and construction loan relationships, loan officers performed individual reviews of the effect of the hurricanes on these borrowers’ sources of repayment. These large relationships, that represented 80% of the outstanding balance of the Corporation’s commercial and construction loan portfolio at the time of the hurricanes, were analyzed and divided into three hurricane-affected categories ( i.e. Low, Medium and High). Clients categorized as Low had no effect, or relatively insignificant effect, as a result of the hurricanes. Clients in the Medium category had demonstrated that they had sufficient liquidity to satisfy their obligations, but the complexity of the insurance claim process may affect their primary or secondary source of repayment. Finally, clients categorized as High could potentially have problems with their primary or secondary sources of repayment as they have a higher degree of uncertainty with respect to the timing of the insurance claim resolution, and the full reestablishment of their businesses was highly dependent on the timely receipt of insurance proceeds. Reserve levels were then recognized for these particular loans based on this stratification. For loans in the Low category, no additional qualitative hurricane-related reserve was calculated. For loans in the Medium and High categories, the Corporation stressed the general reserve loss factors applicable to these loans to reflect higher default probabilities not reflected in the historical data. This review also resulted in downgrades in the credit risk classification of certain loans and their reserves were determined following the methodology applicable to criticized and adversely classified loans, as appropriate. During 2018, the Corporation performed additional procedures to evaluate the adequacy of the qualitative reserve, including the consideration of updated payment patterns and probability of default credit risk analyses applied to consumer loan borrowers subject to payment deferral programs that expired early in 2018. For the determination of the hurricane-related qualitative reserve for residential mortgage loans as of December 31, 2018, the Corporation stressed the loss factors derived from its above-described base methodology by incorporating assumptions of further deterioration in the housing price index and higher loan modification levels. For the determination of the hurricane-related qualitative reserve for commercial and construction loans not individually reviewed as of December 31, 2018, the Corporation segregated the portfolio based on delinquency levels and stressed the general reserve loss factors applicable to 30-89 days past due loans to reflect higher default probabilities. The significant overall uncertainties in the early assessments of hurricane-related credit losses have been largely addressed and the hurricane’s effect on credit quality is now reflected in the normal process for determining the allowance for loan and lease losses and not through a separate hurricane-related qualitative reserve. Refer to Note 3 – Effects of Natural Disasters, to the consolidated financial statements, for additional information. As of January 1, 2020, the Corporation is required to adopt ASC 326 which replaces the above-described incurred loss methodology with a methodology referred to as current expected credit losses (“CECL”) to estimate the allowance for credit losses for the remaining estimated life of the financial asset (including loans, debt securities, and off-balance sheet credit exposures) using historical experience, current conditions, and reasonable and supportable forecasts. Refer to Recently Issued Accounting Standards Not Yet Effective - Accounting for Financial Instruments – Credit Losses below for additional information.
Transfers and servicing of financial assets and extinguishment of liabilities [Policy Text Block]	Transfers and servicing of financial assets and extinguishment of liabilities After a transfer of financial assets in a transaction that qualifies for sale accounting, the Corporation derecognizes the financial assets when control has been surrendered, and derecognizes liabilities when they are extinguished. A transfer of financial assets in which the Corporation surrenders control over the assets is accounted for as a sale to the extent that consideration other than beneficial interests is received in exchange. The criteria that must be met to determine that the control over transferred assets has been surrendered include: (1) the assets must be isolated from creditors of the transferor; (2) the transferee must obtain the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets; and (3) the transferor cannot maintain effective control over the transferred assets through an agreement to repurchase them before their maturity. When the Corporation transfers financial assets and the transfer fails any one of the above criteria, the Corporation is prevented from derecognizing the transferred financial assets and the transaction is accounted for as a secured borrowing.
Servicing Assets [Policy Text Block]	Servicing assets The Corporation recognizes as separate assets the rights to service loans for others, whether those servicing assets are originated or purchased. In the ordinary course of business, the Corporation sells residential mortgage loans (originated or purchased) to GNMA, which generally securitizes the transferred loans into MBS for sale into the secondary market. Also, certain conventional conforming loans are sold to FNMA or FHLMC, with servicing retained. When the Corporation sells mortgage loans, it recognizes any retained servicing right, based on its fair value. Servicing assets (“MSRs”) retained in a sale or securitization arise from contractual agreements between the Corporation and investors in mortgage securities and mortgage loans. The value of MSRs is derived from the net positive cash flows associated with the servicing contracts. Under these contracts, the Corporation performs loan-servicing functions in exchange for fees and other remuneration. The servicing functions typically include: collecting and remitting loan payments, responding to borrower inquiries, accounting for principal and interest, holding custodial funds for payment of property taxes and insurance premiums, supervising foreclosures and property dispositions, and generally administering the loans. The servicing rights, included as part of other assets in the statements of financial condition, entitle the Corporation to servicing fees based on the outstanding principal balance of the mortgage loans and the contractual servicing rate. The servicing fees are credited to income on a monthly basis when collected and recorded as part of mortgage banking activities in the consolidated statements of income. In addition, the Corporation generally receives other remuneration consisting of mortgagor-contracted fees such as late charges and prepayment penalties, which are credited to income when collected. Considerable judgment is required to determine the fair value of the Corporation’s MSRs. Unlike highly liquid investments, the market value of MSRs cannot be readily determined because these assets are not actively traded in securities markets. The initial carrying value of an MSR is generally determined based on its fair value. The Corporation determines the fair value of the MSRs based on a combination of market information on trading activity (MSR trades and broker valuations), benchmarking of servicing assets (valuation surveys), and cash flow modeling. The valuation of the Corporation’s MSRs incorporates two sets of assumptions: (1) market-derived assumptions for discount rates, servicing costs, escrow earnings rates, floating earnings rates, and the cost of funds; and (2) market assumptions calibrated to the Corporation’s loan characteristics and portfolio behavior for escrow balances, delinquencies and foreclosures, late fees, prepayments, and prepayment penalties. Once recorded, the Corporation periodically evaluates MSRs for impairment. Impairment occurs when the current fair value of the MSRs is less than its carrying value. If MSRs are impaired, the impairment is recognized in current-period earnings and the carrying value of the MSRs is adjusted through a valuation allowance. If the value of the MSRs subsequently increases, the recovery in value is recognized in current period earnings and the carrying value of the MSRs is adjusted through a reduction in the valuation allowance. For purposes of performing the MSR impairment evaluation, the servicing portfolio is stratified on the basis of certain risk characteristics such as region, terms, and coupons. The Corporation conducts an other-than-temporary impairment analysis to evaluate whether a loss in the value of the MSRs in a particular stratum, if any, is other than temporary or not. When the recovery of the value is unlikely in the foreseeable future, a write-down of the MSRs in the stratum to its estimated recoverable value is charged to the valuation allowance. As of December 31, 2019, the carrying value of the MSRs amounted to $ 26.8 million (2018 - $ 27.4 million). The MSRs are amortized over the estimated life of the underlying loans based on an income forecast method as a reduction of servicing income. The income forecast method of amortization is based on projected cash flows. A particular periodic amortization is calculated by applying to the carrying amount of the MSRs the ratio of the cash flows projected for the current period to total remaining net MSR forecasted cash flow.
Lessee, Leases [Policy Text Block]	Leases The Corporation determines if an arrangement is a lease or contains a lease at inception. Operating and finance lease liabilities are recognized based on the present value of the remaining lease payments, discounted using the discount rate for the lease at the commencement date. As the rate implicit in the lease is not readily determinable for the Corporation’s operating leases, the Corporation generally uses an incremental borrowing rate based on information available at the commencement date to determine the present value of future lease payments. Operating right-of-use (“ROU”) assets and finance lease assets are generally recognized based on the amount of the initial measurement of the lease liability. The Corporation’s leases are primarily related to operating leases for the Bank’s branches and automated teller machines (“ATMs”). Most of the Corporation’s leases with operating ROU assets have terms of two years to thirty years, some of which include options to extend the leases for up to seven years. The Corporation does not recognize ROU assets and lease liabilities that arise from short-term leases, primarily related to certain month-to-month ATM operating leases. As of December 31, 2019, the Corporation did not have a lease that qualifies as a finance lease. Lease expense is recognized on a straight-line basis over the lease term. The Corporation includes the lease ROU asset and lease liability as part of Other assets and Accounts payable and other liabilities, respectively, in the consolidated statement of financial condition. Refer to “Accounting Standards Adopted in 2019 – Lease Accounting” below for additional accounting guidance and effect of adopting new accounting guidance for leasing transactions in 2019.
Premises and equipment [Policy Text Block]	Premises and equipment Premises and equipment are carried at cost, net of accumulated depreciation and amortization. Depreciation is provided on the straight-line method over the estimated useful life of each type of asset. Amortization of leasehold improvements is computed over the terms of the leases ( i.e. , the contractual term plus lease renewals that are reasonably assured) or the estimated useful lives of the improvements, whichever is shorter. Costs of maintenance and repairs that do not improve or extend the life of the respective assets are expensed as incurred. Costs of renewals and betterments are capitalized. When the Corporation sells or disposes assets, their cost and related accumulated depreciation are removed from the accounts and any gain or loss is reflected in earnings as part of other non-interest income in the consolidated statements of income. When the asset is no longer used in operations, and the Corporation intends to sell it, the asset is reclassified to other assets held for sale and is reported at the lower of the carrying amount or fair value less cost to sell.
Other real estate owned (OREO) [Policy Text Block]	Other real estate owned (OREO) OREO, which consists of real estate acquired in settlement of loans, is recorded at the lower of cost (carrying value of the loan) or fair value minus estimated costs to sell the real estate acquired. Generally, loans have been written down to their net realizable value prior to foreclosure. Any further reduction to their net realizable value is recorded with a charge to the allowance for loan losses at the time of foreclosure or shortly thereafter. Thereafter, gains or losses resulting from the sale of these properties and losses recognized on the periodic reevaluations of these properties are credited or charged to earnings and are included as part of net loss on OREO and OREO expenses in the consolidated statements of income. The cost of maintaining and operating these properties is expensed as incurred. The Corporation estimates fair values primarily based on appraisals, when available, and periodically reviews and updates the net realizable value.
Goodwill and other intangible assets [Policy Text Block]	Goodwill and other intangible assets Goodwill – Goodwill is the purchase premium after adjusting for the fair value of net assets acquired. Goodwill is not amortized but is reviewed for potential impairment on an annual basis, generally during the fourth quarter, or more often if events or circumstances indicate there may be an impairment. The Corporation evaluated goodwill for impairment as of October 1, 2019. Goodwill impairment testing is performed at the segment (or “reporting unit”) level. Goodwill is assigned to reporting units at the date the goodwill is initially recorded. Once goodwill has been assigned to a reporting unit, it no longer retains its association with a particular acquisition, and all of the activities within a reporting unit, whether acquired or internally generated, are available to support the value of the goodwill. The Corporation’s goodwill is related to the United States (Florida) reporting unit. In 2019, the Corporation performed a qualitative assessment to test for impairment the goodwill of the Florida reporting unit. This assessment involved identifying the inputs and assumptions that most affects fair value, evaluating the significance of all identified relevant events and circumstances that affect fair value of the reporting entity and weighing such factors to determine if it is more likely than not that the fair value of the reporting unit was greater than its carrying amount. In the qualitative assessment, the Corporation evaluated events and circumstances that could impact the fair value including the following:  Macroeconomic conditions, such as improvement or deterioration in general economic conditions  Industry and market considerations  Interest rate fluctuations  Overall financial performance of the entity  Performance of industry peers over the last year  Recent market transactions Management considered positive and negative evidence obtained during the evaluation of significant events and circumstances and weighted such information to conclude that it is more likely than not that the reporting unit’s fair value is greater than its carrying amount, thus quantitative tests were not required. In the past, the Corporation has applied quantitative valuation methodologies, including market multiples and discounted cash flow approaches to determine the estimated fair value, which was compared to the carrying value of the reporting unit. If the fair value was less than the carrying amount, an additional test was required to measure the amount of impairment. The Corporation determined that goodwill was not impaired as of December 31, 2019 or 2018. Intangible Assets subject to Amortization – The Corporation amortizes core deposit intangibles over their estimated lives, generally on a straight-line basis, and are reviewed periodically for impairment when events or changes in circumstances indicate that the carrying amount may not be recoverable. The carrying value of core deposit intangible assets amounted to $ 3.5 million as of December 31, 2019 ($ 4.3 million as of December 31, 2018). In connection with the acquisition of a FirstBank-branded credit card loan portfolio in 2012, the Corporation recognized at acquisition a purchased credit card relationship intangible of $ 24.5 million ($ 3.6 million and $ 5.7 million as of December 31, 2019 and 2018, respectively), which is being amortized on an accelerated basis based on the estimated attrition rate of the purchased credit card accounts, which reflects the Corporation’s estimate that it will realize the economic benefits of the intangible asset as the revenue stream generated by the cardholder relationship is realized. These benefits are consumed as the revenue stream generated by the cardholder relationship is realized. For further disclosures, refer to Note 15 – Goodwill and other Intangibles, to the consolidated financial statements. In the first quarter of 2016, FirstBank Insurance Agency acquired certain insurance customer accounts and related customer records and recognized an insurance customer relationship intangible of $ 1.1 million ($ 0.5 million and $ 0.6 million as of December 31, 2019 and 2018, respectively), which the Corporation is amortizing on a straight-line basis. The list of accounts acquired has a direct relationship to previous mortgage loan portfolio acquisitions from Doral Bank and Doral Financial in 2015 and 2014, respectively. For intangible assets subject to amortization, the Corporation recognizes an impairment loss if it determines that the carrying value of the intangible asset is not recoverable and exceeds the fair value. The carrying value of the intangible asset is considered to be not recoverable if it exceeds the sum of the undiscounted cash flows expected to result from the use of the asset. The Corporation performed impairment tests for the years ended December 31, 2019, 2018, and 2017 and determined that no impairment was needed for intangible assets subject to amortization.
Securities purchased and sold under agreements to repurchase [Policy Text Block]	Securities purchased and sold under agreements to repurchase The Corporation accounts for securities purchased under resale agreements and securities sold under repurchase agreements as collateralized financing transactions. Generally, the Corporation records these agreements at the amount at which the securities were purchased or sold. The Corporation monitors the fair value of securities purchased and sold, and obtains collateral from, or returns it to, the counterparties when appropriate. These financing transactions do not create material credit risk given the collateral involved and the related monitoring process. The Corporation sells and acquires securities under agreements to repurchase or resell the same or similar securities. Generally, similar securities are securities from the same issuer, with identical form and type, similar maturity, identical contractual interest rates, similar assets as collateral, and the same aggregate unpaid principal amount. The counterparty to certain agreements may have the right to repledge the collateral by contract or custom. The Corporation presents such assets separately in the consolidated statements of financial condition as securities pledged with creditors’ rights to repledge. Repurchase and resale activities may be transacted under legally enforceable master repurchase agreements that give the Corporation, in the event of default by the counterparty, the right to liquidate securities held and to offset receivables and payables with the same counterparty. The Corporation offsets repurchase and resale transactions with the same counterparty in the consolidated statements of financial condition where it has such a legally enforceable master netting agreement and the transactions have the same maturity date. From time to time, the Corporation modifies repurchase agreements to take advantage of prevailing interest rates. Following applicable GAAP guidance, if the Corporation determines that the debt under the modified terms is substantially different from the original terms, the modification must be accounted for as an extinguishment of debt. The Corporation considers modified terms to be substantially different if the present value of the cash flows under the terms of the new debt instrument is at least 10% different from the present value of the remaining cash flows under the terms of the original instrument. The new debt instrument will be initially recorded at fair value, and that amount will be used to determine the debt extinguishment gain or loss to be recognized through the consolidated statements of income and the effective rate of the new instrument. If the Corporation determines that the debt under the modified terms is not substantially different, then the new effective interest rate is determined based on the carrying amount of the original debt instrument. The Corporation has considered that none of the repurchase agreements modified in the past were substantially different from the original terms, and, therefore, these modifications were not accounted for as extinguishments of debt.
Rewards Liability [Policy Text Block]	Rewards liability The Corporation offers products, primarily credit cards, that offer various rewards to reward program members, such as airline tickets, cash, or merchandise, based on account activity. The Corporation generally recognizes the cost of rewards as part of business promotion expenses when the rewards are earned by the customer and, at that time, records the corresponding reward liability. The Corporation determines the reward liability based on points earned to date that the Corporation expects to be redeemed and the average cost per point redemption. The reward liability is reduced as points are redeemed. In estimating the reward liability, the Corporation considers historical reward redemption behavior, the terms of the current reward program, and the card purchase activity. The reward liability is sensitive to changes in the reward redemption type and redemption rate, which is based on the expectation that the vast majority of all points earned will eventually be redeemed. The reward liability, which is included in other liabilities in the consolidated statements of financial condition, totaled $ 7.1 million and $ 7.0 million as of December 31, 2019 and 2018, respectively.
Income Tax [PolicyText Block]	Income taxes The Corporation uses the asset and liability method for the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been recognized in the Corporation’s financial statements or tax returns. Deferred income tax assets and liabilities are determined for differences between financial statement and tax bases of assets and liabilities that will result in taxable or deductible amounts in the future. The computation is based on enacted tax laws and rates applicable to periods in which the temporary differences are expected to be recovered or settled. Valuation allowances are established, when necessary, to reduce deferred tax assets to the amount that is more likely than not to be realized. In making such assessment, significant weight is given to evidence that can be objectively verified, including both positive and negative evidence. The authoritative guidance for accounting for income taxes requires the consideration of all sources of taxable income available to realize the deferred tax asset, including the future reversal of existing temporary differences, tax planning strategies and future taxable income, exclusive of the impact of the reversal of temporary differences and carryforwards. In estimating taxes, management assesses the relative merits and risks of the appropriate tax treatment of transactions taking into account statutory, judicial, and regulatory guidance. Refer to Note 27 – Income Taxes, to the consolidated financial statements, for additional information. Under the authoritative accounting guidance, income tax benefits are recognized and measured based on a two-step analysis: 1) a tax position must be more likely than not to be sustained based solely on its technical merits in order to be recognized; and 2) the benefit is measured at the largest dollar amount of that position that is more likely than not to be sustained upon settlement. The difference between a benefit not recognized in accordance with this analysis and the tax benefit claimed on a tax return is referred to as an Unrecognized Tax Benefit (“UTB”). The Corporation classifies interest and penalties, if any, related to UTBs as components of income tax expense. As of December 31, 2019 and 2018, the Corporation did not have any UTBs recorded on its books.
Treasury stock [Policy Text Block]	Treasury stock The Corporation accounts for treasury stock at par value. Under this method, the treasury stock account is increased by the par value of each share of common stock reacquired. Any excess amount paid per share over the par value is debited to additional paid-in capital for the amount per share that was originally credited. Any remaining excess is charged to retained earnings.
Stock-based compensation [Policy Text Block]	Stock-based compensation Compensation cost is recognized in the financial statements for all share-based payment grants. On May 24, 2016, the Corporation’s stockholders approved the amendment and restatement of the First BanCorp. Omnibus Incentive Plan, as amended (the “Omnibus Plan”), to, among other things, increase the number of shares of common stock reserved for issuance under the Omnibus Plan, extend the term of the Omnibus Plan to May 24, 2026 and re-approve the material terms of the performance goals under the Omnibus Plan for purposes of the then-effective Section 162(m) of the U.S. Internal Revenue Code of 1986, as amended. The Omnibus Plan provides for equity-based compensation incentives (the “awards”) through the grant of stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares, cash-based awards and other stock-based awards. The compensation cost for an award, determined based on the estimate of the fair value at the grant date (considering forfeitures and any post-vesting restrictions), is recognized over the period during which an employee or director is required to provide services in exchange for an award, which is the vesting period. Stock-based compensation accounting guidance requires the Corporation to reverse compensation expense for any awards that are forfeited due to employee or director turnover. Quarterly changes in the estimated forfeiture rate may have a significant effect on share-based compensation, as the effect of adjusting the rate for all expense amortization is recognized in the period in which the forfeiture estimate is changed. If the actual forfeiture rate is higher than the estimated forfeiture rate, an adjustment is made to increase the estimated forfeiture rate, which will result in a decrease in the expense recognized in the financial statements. If the actual forfeiture rate is lower than the estimated forfeiture rate, an adjustment is made to decrease the estimated forfeiture rate, which will result in an increase in the expense recognized in the financial statements. For additional information regarding the Corporation’s equity-based compensation and awards granted, refer to Note 22 – Stock-Based Compensation, to the consolidated financial statements.
Comprehensive income [Policy Text Block]	Comprehensive income Comprehensive income for First BanCorp. includes net income and the unrealized gain (loss) on available-for-sale securities, net of estimated tax effects.
Segment Information [Policy Text Block]	Segment information The Corporation reports financial and descriptive information about its reportable segments. Operating segments are components of an enterprise about which separate financial information is available that is evaluated regularly by management in deciding how to allocate resources and in assessing performance. The Corporation’s management determined that the segregation that best fulfills the segment definition described above is by lines of business for its operations in Puerto Rico, the Corporation’s principal market, and by geographic areas for its operations outside of Puerto Rico. As of December 31, 2019, the Corporation had the following six operating segments that are all reportable segments: Commercial and Corporate Banking; Mortgage Banking; Consumer (Retail) Banking; Treasury and Investments; United States Operations; and Virgin Islands Operations. Refer to Note 36 – Segment Information, to the consolidated financial statements, for additional information.
Valuation of financial instruments [Policy Text Block]	Valuation of financial instruments The measurement of fair value is fundamental to the Corporation’s presentation of its financial condition and results of operations. The Corporation holds debt and equity securities, derivatives, and other financial instruments at fair value. The Corporation holds its investments and liabilities mainly to manage liquidity needs and interest rate risks. A meaningful part of the Corporation’s total assets is reflected at fair value on the Corporation’s financial statements. The FASB’s authoritative guidance for fair value measurement defines fair value as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. This guidance also establishes a fair value hierarchy for classifying financial instruments. The hierarchy is based on whether the inputs to the valuation techniques used to measure fair value are observable or unobservable. Three levels of inputs may be used to measure fair value: Level 1 Inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 Valuations are based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Under the fair value accounting guidance, an entity has the irrevocable option to elect, on a contract-by-contract basis, to measure certain financial assets and liabilities at fair value at the inception of the contract and, thereafter, to reflect any changes in fair value in current earnings. The Corporation did not make any fair value option election as of December 31, 2019 or 2018. See Note 30 – Fair Value, to the consolidated financial statements, for additional information.
Income recognition- Insurance agencies business [Policy Text Block]	Income recognition— Insurance agency Commission revenue is recognized as of the effective date of the related insurance policy. Additional premiums and rate adjustments are recorded as they occur. The Corporation also receives contingent commissions from insurance companies as additional incentive for achieving specified premium volume goals and/or the loss experience of the insurance placed by the Corporation. The Corporation recognizes contingent commissions from insurance companies generally when it receives such commissions or when the insurance company reports the amount to be paid to the Corporation. The Corporation establishes an allowance for expected adjustments to commissions earned relating to policy cancellations. Refer to Note 31 - Revenue from Contracts with Customers, to the consolidated financial statements, for additional information about the Corporation’s evaluation of insurance commissions for purposes of compliance with the revenue recognition accounting guidelines as required by Accounting Standard Codification (“ASC” or “the Codification”) Topic 606
Earnings per common share [Policy Text Block]	Earnings per common share Earnings per share-basic is calculated by dividing net income attributable to common stockholders by the weighted-average number of common shares issued and outstanding. Net income attributable to common stockholders represents net income adjusted for any preferred stock dividends, including any preferred stock dividends declared but not yet paid, and any cumulative preferred stock dividends related to the current dividend period that have not been declared as of the end of the period. Basic weighted-average common shares outstanding excludes unvested shares of restricted stock that do not contain non-forfeitable dividend rights. The computation of diluted earnings per share is similar to the computation of basic earnings per share except that the number of weighted-average common shares is increased to include the number of additional common shares that would have been outstanding if the dilutive common shares had been issued, referred to as potential common shares. Potential dilutive common shares consist of unvested shares of restricted stock that do not contain non-forfeitable dividend rights, warrants outstanding during the period and common stock issued under the assumed exercise of stock options, if any, using the treasury stock method. This method assumes that the potential dilutive common shares are issued and outstanding and the proceeds from the exercise, in addition to the amount of compensation cost attributable to future services, are used to purchase common stock at the exercise date. The difference between the number of potential dilutive shares issued and the shares purchased is added as incremental shares to the actual number of shares outstanding to compute diluted earnings per share. Unvested shares of restricted stock, stock options, and warrants outstanding during the period that result in lower potential dilutive shares issued that shares purchased under the treasury stock method are not included in the computation of dilutive earnings per share since their inclusion would have an antidilutive effect on earnings per share. Potential dilutive common shares also include performance units that do not contain non-forfeitable dividend rights if the performance condition is met as of the end of the reporting period.

MONEY MARKET INVESTMENTS (Table

MONEY MARKET INVESTMENTS (Tables)	12 Months Ended
	Dec. 31, 2019
Cash and Cash Equivalents, at Carrying Value [Abstract]
Schedule Of Money Market Investments [Table Text Block]	Money market investments as of December 31, 2019 and 2018 were as follows: 2019 2018 (Dollars in thousands) Time deposits with other financial institutions (1) (2) $ 300 $ 300 Overnight deposits with other financial institutions (3) 96,228 6,111 Other short-term investments (4) 1,180 1,179 $ 97,708 $ 7,590

INVESTMENT SECURITIES (Tables)

INVESTMENT SECURITIES (Tables)	12 Months Ended
	Dec. 31, 2019
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Significant Assumptions in Valuation of Private Label MBS [Table Text Block]	The tables below present qualitative information for significant assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as of December 31, 2019 and December 31, 2018: December 31, 2019 Fair Value Valuation Technique Unobservable Input Range Weighted Average (Dollars in thousands) Minimum Maximum Investment securities available-for-sale: Private label MBS $ 11,116 Discounted cash flows Discount rate 13.7% 13.7% 13.7% Prepayment rate 6.8% 10.3% 7.9% Projected Cumulative Loss Rate 0.0% 7.4% 2.8% Puerto Rico government obligations 2,974 Discounted cash flows Discount rate 6.9% 6.9% 6.9% Prepayment rate 3.0% 3.0% 3.0% December 31, 2018 Fair Value Valuation Technique Unobservable Input Range Weighted Average (Dollars in thousands) Minimum Maximum Investment securities available-for-sale: Private label MBS $ 13,914 Discounted cash flows Discount rate 14.5% 14.5% 14.5% Prepayment rate 3.3% 20.9% 11.4% Projected Cumulative Loss Rate 0.0% 6.8% 3.0% Puerto Rico government obligations 2,824 Discounted cash flows Discount rate 6.3% 6.3% 6.3% Prepayment rate 3.0% 3.0% 3.0%
Held-to-maturity Securities [Member]
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Investments Classified by Contractual Maturity Date [Table Text Block]	The amortized cost, gross unrecognized gains and losses, estimated fair value, weighted-average yield and contractual maturities of investment securities held to maturity as of December 31, 2019 and December 31, 2018 were as follows December 31, 2019 Amortized cost Fair value Gross Unrecognized Weighted- (Dollars in thousands) gains losses average yield% Puerto Rico Municipal Bonds: Due within one year $ 321 $ - $ 6 $ 315 5.84 After 1 to 5 years 8,264 - 736 7,528 5.18 After 5 to 10 years 56,511 - 8,646 47,865 5.77 After 10 years 73,579 - 18,913 54,666 5.44 Total investment securities held to maturity $ 138,675 $ - $ 28,301 $ 110,374 5.56 December 31, 2018 Amortized cost Fair value Gross Unrecognized Weighted- (Dollars in thousands) gains losses average yield% Puerto Rico Municipal Bonds: After 1 to 5 years $ 6,100 $ - $ 435 $ 5,665 4.79 After 5 to 10 years 53,016 - 5,360 47,656 6.00 After 10 years 85,699 - 13,362 72,337 5.86 Total investment securities held to maturity $ 144,815 $ - $ 19,157 $ 125,658 5.86
Schedule of Unrealized Loss on Investments [Table Text Block]	The following tables show the Corporation’s held-to-maturity investments’ fair value and gross unrecognized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrecognized loss position, as of December 31, 2019 and December 31, 2018: As of December 31, 2019 Less than 12 months 12 months or more Total Unrecognized Unrecognized Unrecognized Fair Value Losses Fair Value Losses Fair Value Losses (In thousands) Debt securities: Puerto Rico Municipal Bonds $ - $ - $ 110,374 $ 28,301 $ 110,374 $ 28,301 As of December 31, 2018 Less than 12 months 12 months or more Total Unrecognized Unrecognized Unrecognized Fair Value Losses Fair Value Losses Fair Value Losses (In thousands) Debt securities: Puerto Rico Municipal Bonds $ - $ - $ 125,658 $ 19,157 $ 125,658 $ 19,157
Available-for-sale Securities [Member]
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Investments Classified by Contractual Maturity Date [Table Text Block]	The amortized cost, non-credit loss component of OTTI recorded in OCI, gross unrealized gains and losses recorded in OCI, estimated fair value, and weighted-average yield on investment securities available for sale by contractual maturities as of December 31, 2019 and 2018 were as follows: December 31, 2019 Amortized cost Non-credit Loss Component of OTTI Recorded in OCI Gross Fair value Unrealized Weighted- Gains Losses average yield% (Dollars in thousands) U.S. Treasury securities: After 1 to 5 years $ 7,478 $ - $ 1 $ - $ 7,479 1.65 U.S. government-sponsored agencies' obligations: Due within one year 93,299 - 103 106 93,296 1.67 After 1 to 5 years 142,513 - 676 52 143,137 2.12 After 5 to 10 years 63,764 - 165 150 63,779 2.33 After 10 years 24,624 - - 116 24,508 2.00 Puerto Rico government obligations: After 5 to 10 years 4,000 - 348 - 4,348 5.12 After 10 years (1) 4,166 - - 1,192 2,974 6.97 United States and Puerto Rico government obligations 339,844 - 1,293 1,616 339,521 2.11 MBS: FHLMC certificates: After 5 to 10 years 81,418 - 589 228 81,779 2.16 After 10 years 424,316 - 3,873 758 427,431 2.50 505,734 - 4,462 986 509,210 2.44 GNMA certificates: After 1 to 5 years 4,357 - 45 - 4,402 3.26 After 5 to 10 years 42,303 - 607 - 42,910 2.77 After 10 years 258,944 - 7,126 500 265,570 3.03 305,604 - 7,778 500 312,882 3.00 FNMA certificates: After 1 to 5 years 19,779 - 415 3 20,191 2.79 After 5 to 10 years 140,599 - 1,257 641 141,215 2.14 After 10 years 700,213 - 9,006 1,208 708,011 2.58 860,591 - 10,678 1,852 869,417 2.51 Collateralized mortgage obligations issued or guaranteed by the FHLMC, FNMA and GNMA: After 1 to 5 years 608 - - 1 607 2.43 After 10 years 80,130 - 362 220 80,272 2.76 80,738 - 362 221 80,879 2.75 Private label: After 10 years 15,997 4,881 - - 11,116 3.90 Total MBS 1,768,664 4,881 23,280 3,559 1,783,504 2.60 Other After 1 to 5 years 500 - - - 500 2.95 Total investment securities available for sale $ 2,109,008 $ 4,881 $ 24,573 $ 5,175 $ 2,123,525 2.52 December 31, 2018 Amortized cost Non-credit Loss Component of OTTI Recorded in OCI Gross Fair value Unrealized Weighted- Gains Losses average yield% (Dollars in thousands) U.S. Treasury securities: Due within one year $ 7,489 $ - $ - $ 33 $ 7,456 1.29 U.S. government-sponsored agencies' obligations: Due within one year 191,531 - - 1,908 189,623 1.28 After 1 to 5 years 184,851 - 203 2,249 182,805 2.07 After 5 to 10 years 195,750 - 286 1,674 194,362 2.95 After 10 years 34,627 - - 217 34,410 2.68 Puerto Rico government obligations: After 5 to 10 years 4,000 - 128 - 4,128 5.12 After 10 years (1) 4,185 - - 1,361 2,824 6.97 United States and Puerto Rico government obligations 622,433 - 617 7,442 615,608 2.18 MBS: FHLMC certificates: After 5 to 10 years 92,149 - 31 1,850 90,330 2.09 After 10 years 265,624 - 523 6,699 259,448 2.52 357,773 - 554 8,549 349,778 2.41 GNMA certificates: After 1 to 5 years 176 - 3 - 179 3.43 After 5 to 10 years 61,604 - 408 503 61,509 2.88 After 10 years 118,898 - 2,938 747 121,089 3.92 180,678 - 3,349 1,250 182,777 3.56 FNMA certificates: Due within one year 119 - 2 - 121 2.20 After 1 to 5 years 19,798 - 50 122 19,726 2.79 After 5 to 10 years 165,067 - 2 3,822 161,247 2.13 After 10 years 543,972 - 2,211 13,233 532,950 2.67 728,956 - 2,265 17,177 714,044 2.55 Collateralized mortgage obligations issued or guaranteed by the FHLMC and GNMA: After 1 to 5 years 6,530 - 1 18 6,513 3.15 After 10 years 59,020 - 474 60 59,434 3.22 65,550 - 475 78 65,947 3.22 Private label: After 10 years 19,340 5,426 - - 13,914 4.89 Total MBS 1,352,297 5,426 6,643 27,054 1,326,460 2.71 Other After 1 to 5 years 500 - - - 500 2.96 Total investment securities available for sale $ 1,975,230 $ 5,426 $ 7,260 $ 34,496 $ 1,942,568 2.55 The aggregate amortized cost and approximate market value of investment securities available for sale as of December 31, 2019 by contractual maturity are shown below: Amortized Cost Fair Value (Dollars in thousands) United States and Puerto Rico government obligations, and other debt securities: Within 1 year $ 93,299 $ 93,296 After 1 to 5 years 150,491 151,116 After 5 to 10 years 67,764 68,127 After 10 years 28,790 27,482 340,344 340,021 MBS and Collateralized Mortgage Obligations (1) 1,768,664 1,783,504 Total investment securities available for sale $ 2,109,008 $ 2,123,525 (1) The expected maturities of MBS and collateralized mortgage obligations may differ from their contractual maturities because they may be subject to prepayments.
Schedule of Unrealized Loss on Investments [Table Text Block]	The following tables show the Corporation’s available-for-sale investments’ fair value and gross unrealized losses, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, as of December 31, 2019 and December 31, 2018. The tables also include debt securities for which an OTTI was recognized and only the amount related to a credit loss was recognized in earnings. For unrealized losses for which OTTI was recognized, the related credit loss was charged against the amortized cost basis of the debt security. As of December 31, 2019 Less than 12 months 12 months or more Total Unrealized Unrealized Unrealized Fair Value Losses Fair Value Losses Fair Value Losses (In thousands) Debt securities: Puerto Rico-government obligations $ - $ - $ 2,974 $ 1,192 $ 2,974 $ 1,192 U.S. Treasury and U.S. government agencies’ obligations 45,073 172 99,764 252 144,837 424 MBS: FNMA 58,668 499 173,708 1,353 232,376 1,852 FHLMC 74,134 270 63,864 716 137,998 986 GNMA 79,145 472 7,203 28 86,348 500 Collateralized mortgage obligations issued or guaranteed by the FHLMC, FNMA and GNMA 21,873 221 - - 21,873 221 Private label MBS - - 11,116 4,881 11,116 4,881 $ 278,893 $ 1,634 $ 358,629 $ 8,422 $ 637,522 $ 10,056 As of December 31, 2018 Less than 12 months 12 months or more Total Unrealized Unrealized Unrealized Fair Value Losses Fair Value Losses Fair Value Losses (In thousands) Debt securities: Puerto Rico-government obligations $ - $ - $ 2,824 $ 1,361 $ 2,824 $ 1,361 U.S. Treasury and U.S. government agencies’ obligations 16,669 77 468,094 6,004 484,763 6,081 MBS: FNMA 25,079 129 521,871 17,048 546,950 17,177 FHLMC 3,382 32 263,798 8,517 267,180 8,549 GNMA 3,364 15 57,535 1,235 60,899 1,250 Collateralized mortgage obligations issued or guaranteed by the FHLMC and GNMA 16,065 78 - - 16,065 78 Private label MBS - - 13,914 5,426 13,914 5,426 $ 64,559 $ 331 $ 1,328,036 $ 39,591 $ 1,392,595 $ 39,922
OTTI Losses on Debt Securities [Table Text Block]	The Corporation recorded OTTI losses on available-for-sale debt securities as follows: Year Ended December 31, 2019 2018 2017 (In thousands) Total OTTI losses $ ( 557) $ - $ ( 12,231) Portion of OTTI recognized in OCI 60 ( 50) - Net impairment losses recognized in earnings (1) $ ( 497) $ ( 50) $ ( 12,231) The following tables summarize the roll-forward of credit losses on debt securities held by the Corporation for which a portion of an OTTI is also recognized in OCI: Cumulative OTTI credit losses recognized in earnings on securities still held Credit impairments Credit loss December 31, recognized in earnings on reductions for December 31, 2018 securities that have been securities sold 2019 Balance previously impaired during the period Balance (In thousands) Available-for-sale securities Private label MBS $ 6,842 $ 497 $ - $ 7,339 Cumulative OTTI credit losses recognized in earnings on securities still held Credit impairments Credit loss December 31, recognized in earnings on reductions for December 31, 2017 securities that have been securities sold 2018 Balance previously impaired during the period Balance (In thousands) Available-for-sale securities Private label MBS $ 6,792 $ 50 $ - $ 6,842 Cumulative OTTI credit losses recognized in earnings on securities still held Credit impairments Credit loss December 31, recognized in earnings on reductions for December 31, 2016 securities that have been securities sold 2017 Balance previously impaired during the period Balance (In thousands) Available-for-sale securities Puerto Rico government obligations $ 22,189 $ 12,231 $ ( 34,420) $ - Private label MBS 6,792 - - 6,792 Total OTTI credit losses for available-for-sale debt securities $ 28,981 $ 12,231 $ ( 34,420) $ 6,792
Significant Assumptions in Valuation of Private Label MBS [Table Text Block]	Based on the expected cash flows, and since the Corporation does not have the intention to sell the securities and has sufficient capital and liquidity to hold these securities until a recovery of the fair value occurs, only the credit loss component, if any, has been reflected in earnings. Significant assumptions in the valuation of the private label MBS were as follows: As of As of December 31, 2019 December 31, 2018 Weighted Range Weighted Range Average Minimum Maximum Average Minimum Maximum Discount rate 13.7% 13.7% 13.7% 14.5% 14.5% 14.5% Prepayment rate 7.9% 6.8% 10.3% 11.4% 3.3% 20.9% Projected Cumulative Loss Rate 2.8% 0.0% 7.4% 3.0% 0.0% 6.8%
Schedule of Available-for-sale Securities by issuer type [Table Text Block]	The following table states the names of issuers, and the aggregate amortized cost and market value of the securities of such issuers, when the aggregate amortized cost of such securities exceeds 10% of the Corporation’s stockholders’ equity. This information excludes securities of the U.S. and Puerto Rico government. Investments in obligations issued by a state of the U.S. and its political subdivisions and agencies that are payable and secured by the same source of revenue or taxing authority, other than the U.S. government, are considered securities of a single issuer and include debt securities and MBS. As of As of December 31, 2019 December 31, 2018 Amortized Amortized Cost Fair Value Cost Fair Value (In thousands) FHLMC $ 509,769 $ 513,249 $ 387,703 $ 379,653 GNMA 370,511 377,872 239,698 242,211 FNMA 915,704 924,663 791,200 775,673 FHLB 191,581 191,869 334,717 330,714

INTEREST AND DIVIDEND ON INVE_2

INTEREST AND DIVIDEND ON INVESTMENTS (Tables)	12 Months Ended
	Dec. 31, 2019
Investment Income, Interest and Dividend [Abstract]
Schedule of interest on investments and FHLB dividend income	The following provides information about interest on investments, interest-bearing cash accounts, and FHLB dividend income: Year Ended December 31, 2019 2018 2017 (In thousands) MBS: Taxable $ 7,812 $ 8,688 $ 9,656 Exempt (1) 29,232 27,741 24,575 37,044 36,429 34,231 Puerto Rico government obligations, U.S. Treasury securities, and U.S. government agencies: Taxable 165 470 2,091 Exempt (1) 19,623 20,582 12,690 19,788 21,052 14,781 Other investment securities (including FHLB dividends) Taxable 2,714 2,743 2,113 Total interest income on investment securities 59,546 60,224 51,125 Interest on money market investments and interest-bearing cash accounts: Taxable 13,205 10,863 4,609 Exempt 148 233 5 Total interest income on money market investments and interest-bearing cash accounts 13,353 11,096 4,614 Total interest and dividend income on investment securities, money market investments, and interest-bearing cash accounts $ 72,899 $ 71,320 $ 55,739 The following table summarizes the components of interest and dividend income on investments: Year Ended December 31, 2019 2018 2017 (In thousands) Interest income on investment securities, money market investments, and interest-bearing cash accounts $ 70,217 $ 68,592 $ 53,634 Dividends on FHLB stock 2,682 2,728 2,105 Total interest income and dividends on investments $ 72,899 $ 71,320 $ 55,739

LOANS HELD FOR INVESTMENT (Tabl

LOANS HELD FOR INVESTMENT (Tables)	12 Months Ended
	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Portfolio Held for Investment [Table Text Block]	The following provides information about the loan portfolio held for investment: As of December 31, As of December 31, 2019 2018 (In thousands) Residential mortgage loans, mainly secured by first mortgages $ 2,933,773 $ 3,163,208 Commercial loans: Construction loans 111,317 79,429 Commercial mortgage loans 1,444,586 1,522,662 Commercial and Industrial loans (1) 2,230,876 2,148,111 Total commercial loans 3,786,779 3,750,202 Finance leases 414,532 333,536 Consumer loans 1,867,121 1,611,177 Loans held for investment 9,002,205 8,858,123 Allowance for loan and lease losses ( 155,139) ( 196,362) Loans held for investment, net $ 8,847,066 $ 8,661,761
Loans Held for Investment on Which Accrual of Interest Income had been Discontinued [Table Text Block]	Loans held for investment on which accrual of interest income had been discontinued were as follows: As of As of December 31, December 31, 2019 2018 (In thousands) Nonaccrual loans: Residential mortgage $ 121,408 $ 147,287 Commercial mortgage 40,076 109,536 Commercial and Industrial 18,773 30,382 Construction: Land 2,743 6,260 Construction-commercial 6,035 - Construction-residential 1,004 2,102 Consumer: Auto loans 12,220 11,212 Finance leases 1,354 1,329 Other consumer loans 7,055 7,865 Total nonaccrual loans held for investment (1)(2)(3) $ 210,668 $ 315,973
Corporation's Aging of Loans Held for Investment Portfolio [Table Text Block]	The Corporation’s aging of the loans held for investment portfolio is as follows: As of December 31, 2019 30-59 Days Past Due 60-89 Days Past Due 90 days or more Past Due (1) Total Past Due Purchased Credit-Impaired Loans Current Total loans held for investment 90 days past due and still accruing (In thousands) Residential mortgage: FHA/VA government-guaranteed loans (2) (3) (4) $ - $ 2,068 $ 81,140 $ 83,208 $ - $ 40,701 $ 123,909 $ 81,140 Other residential mortgage loans (2) (4) - 77,971 136,598 214,569 133,744 2,461,551 2,809,864 15,190 Commercial: Commercial and Industrial loans 1,785 105 25,834 27,724 - 2,203,152 2,230,876 7,061 Commercial mortgage loans (4) - 3,551 40,278 43,829 2,956 1,397,801 1,444,586 202 Construction: Land (4) - 105 2,743 2,848 - 13,645 16,493 - Construction-commercial - - 6,035 6,035 - 79,488 85,523 - Construction-residential - - 1,004 1,004 - 8,297 9,301 - Consumer: Auto loans 36,433 8,539 12,220 57,192 - 1,077,663 1,134,855 - Finance leases 6,501 1,402 1,354 9,257 - 405,275 414,532 - Other consumer loans 10,921 5,757 11,466 28,144 - 704,122 732,266 4,411 Total loans held for investment $ 55,640 $ 99,498 $ 318,672 $ 473,810 $ 136,700 $ 8,391,695 $ 9,002,205 $ 108,004 As of December 31, 2018 30-59 Days Past Due 60-89 Days Past Due 90 days or more Past Due (1) Total Past Due Purchased Credit-Impaired Loans Current Total loans held for investment 90 days past due and still accruing (In thousands) Residential mortgage: FHA/VA government-guaranteed loans (2) (3) (4) $ - $ 4,183 $ 104,751 $ 108,934 $ - $ 38,271 $ 147,205 $ 104,751 Other residential mortgage loans (2) (4) - 62,077 161,851 223,928 143,176 2,648,899 3,016,003 14,564 Commercial: Commercial and Industrial loans 2,550 66 35,385 38,001 - 2,110,110 2,148,111 5,003 Commercial mortgage loans (4) - 1,038 110,482 111,520 3,464 1,407,678 1,522,662 946 Construction: Land (4) - 207 6,327 6,534 - 13,779 20,313 67 Construction-commercial (4) - - - - - 47,965 47,965 - Construction-residential (4) - - 2,102 2,102 - 9,049 11,151 - Consumer: Auto loans 31,070 7,103 11,212 49,385 - 897,091 946,476 - Finance leases 5,502 1,362 1,329 8,193 - 325,343 333,536 - Other consumer loans 9,898 4,542 11,617 26,057 - 638,644 664,701 3,752 Total loans held for investment $ 49,020 $ 80,578 $ 445,056 $ 574,654 $ 146,640 $ 8,136,829 $ 8,858,123 $ 129,083
Corporation's Credit Quality Indicators by Loan [Table Text Block]	The Corporation’s commercial and construction loans by credit quality indicators as of December 31, 2019 and 2018 are set forth below: Commercial Credit Exposure-Credit Risk Profile Based on Creditworthiness Category: Special Mention Substandard Doubtful Loss Total Criticized Assets Total Portfolio December 31, 2019 (In thousands) Commercial mortgage $ 13,080 $ 175,838 $ - $ - $ 188,918 $ 1,444,586 Construction: Land - 5,527 - - 5,527 16,493 Construction-commercial - 6,035 - - 6,035 85,523 Construction-residential - 1,004 - - 1,004 9,301 Commercial and Industrial 39,327 29,031 2,768 249 71,375 2,230,876 Total $ 52,407 $ 217,435 $ 2,768 $ 249 $ 272,859 $ 3,786,779 Commercial Credit Exposure-Credit Risk Profile Based on Creditworthiness Category: Special Mention Substandard Doubtful Loss Total Criticized Assets (1) Total Portfolio December 31, 2018 (In thousands) Commercial mortgage $ 172,260 $ 276,935 $ 1,701 $ - $ 450,896 $ 1,522,662 Construction: Land - 7,407 - - 7,407 20,313 Construction-commercial - - - - - 47,965 Construction-residential - 2,102 - - 2,102 11,151 Commercial and Industrial 85,557 45,274 6,114 396 137,341 2,148,111 Total $ 257,817 $ 331,718 $ 7,815 $ 396 $ 597,746 $ 3,750,202 The Corporation’s residential and consumer loans by credit quality indicators as of December 31, 2019 and 2018 are summarized below: December 31, 2019 Residential and Consumer Credit Exposure-Credit Risk Profile Based on Payment Activity Residential Real-Estate Consumer FHA/VA/ Guaranteed (1) Other residential loans Auto Finance Leases Other Consumer (In thousands) Performing $ 123,909 $ 2,554,712 $ 1,122,635 $ 413,178 $ 725,211 Purchased Credit-Impaired (2) - 133,744 - - - Nonaccrual - 121,408 12,220 1,354 7,055 Total $ 123,909 $ 2,809,864 $ 1,134,855 $ 414,532 $ 732,266 December 31, 2018 Residential and Consumer Credit Exposure-Credit Risk Profile Based on Payment Activity Residential Real-Estate Consumer FHA/VA/ Guaranteed (1) Other residential loans Auto Finance Leases Other Consumer (In thousands) Performing $ 147,205 $ 2,725,540 $ 935,264 $ 332,207 $ 656,836 Purchased Credit-Impaired (2) - 143,176 - - - Nonaccrual - 147,287 11,212 1,329 7,865 Total $ 147,205 $ 3,016,003 $ 946,476 $ 333,536 $ 664,701
Impaired Loans [Table Text Block]	The following tables present, as of the indicated dates, information about impaired loans held for investment, excluding PCI loans, which are reported separately, as discussed below: Impaired Loans Impaired Loans Impaired Loans - With a Related Specific Allowance With No Related Specific Allowance Impaired Loans Total Recorded Investment (1) Unpaid Principal Balance Related Specific Allowance Recorded Investment (1) Unpaid Principal Balance Recorded Investment (1) Unpaid Principal Balance Related Specific Allowance (In thousands) As of December 31, 2019 FHA/VA-Guaranteed loans $ - $ - $ - $ - $ - $ - $ - $ - Other residential mortgage loans 265,280 288,663 17,037 111,960 158,063 377,240 446,726 17,037 Commercial: Commercial mortgage loans 34,437 43,936 6,788 44,120 48,195 78,557 92,131 6,788 Commercial and Industrial loans 49,324 86,762 7,123 27,209 31,360 76,533 118,122 7,123 Construction: Land 2,034 2,404 528 1,883 2,530 3,917 4,934 528 Construction-commercial 6,035 6,035 279 - - 6,035 6,035 279 Construction-residential 514 514 13 956 1,531 1,470 2,045 13 Consumer: Auto loans 14,460 14,446 3,438 79 155 14,539 14,601 3,438 Finance leases 1,533 1,711 80 - - 1,533 1,711 80 Other consumer loans 8,243 8,591 829 1,105 3,832 9,348 12,423 829 $ 381,860 $ 453,062 $ 36,115 $ 187,312 $ 245,666 $ 569,172 $ 698,728 $ 36,115 (1) Excluding accrued interest receivable. Impaired Loans Impaired Loans - With a Related Specific Allowance With No Related Specific Allowance Impaired Loans Total Recorded Investment (1) Unpaid Principal Balance Related Specific Allowance Recorded Investment (1) Unpaid Principal Balance Recorded Investment (1) Unpaid Principal Balance Related Specific Allowance (In thousands) As of December 31, 2018 FHA/VA-Guaranteed loans $ - $ - $ - $ - $ - $ - $ - $ - Other residential mortgage loans 293,494 325,897 19,965 110,238 148,920 403,732 474,817 19,965 Commercial: Commercial mortgage loans 184,068 201,116 17,684 43,358 49,253 227,426 250,369 17,684 Commercial and Industrial loans 61,162 76,027 9,693 30,030 48,085 91,192 124,112 9,693 Construction: Land 2,444 2,923 552 2,431 2,927 4,875 5,850 552 Construction-commercial - - - - - - - - Construction-residential 1,718 2,370 208 - - 1,718 2,370 208 Consumer: Auto loans 17,781 17,781 3,689 250 250 18,031 18,031 3,689 Finance leases 1,914 1,914 102 22 22 1,936 1,936 102 Other consumer loans 9,291 10,066 2,083 2,068 2,750 11,359 12,816 2,083 $ 571,872 $ 638,094 $ 53,976 $ 188,397 $ 252,207 $ 760,269 $ 890,301 $ 53,976 (1) Excluding accrued interest receivable. Impaired Loans Average Recorded Investment (1) Interest Income on Accrual Basis Interest Income on Cash Basis Total Interest Income (In thousands) Year Ended December 31, 2019 FHA/VA-Guaranteed loans $ - $ - $ - $ - Other residential mortgage loans 385,160 17,038 907 17,945 Commercial: Commercial mortgage loans 80,846 1,916 156 2,072 Commercial and Industrial loans 82,526 3,673 113 3,786 Construction: Land 4,258 85 28 113 Construction-commercial 6,036 - - - Construction-residential 1,482 21 - 21 Consumer: Auto loans 16,832 1,084 - 1,084 Finance leases 1,815 136 - 136 Other consumer loans 10,453 824 131 955 $ 589,408 $ 24,777 $ 1,335 $ 26,112 (1) Excluding accrued interest receivable. Average Recorded Investment (1) Interest Income on Accrual Basis Interest Income on Cash Basis Total Interest Income (In thousands) Year Ended December 31, 2018 FHA/VA-Guaranteed loans $ - $ - $ - $ - Other residential mortgage loans 411,730 18,131 1,376 19,507 Commercial: Commercial mortgage loans 233,372 4,434 2,135 6,569 Commercial and Industrial loans 99,050 2,530 9 2,539 Construction: Land 5,025 93 26 119 Construction-commercial - - - - Construction-residential 1,724 - - - Consumer: Auto loans 20,156 1,449 - 1,449 Finance leases 2,197 145 - 145 Other consumer loans 12,177 913 164 1,077 $ 785,431 $ 27,695 $ 3,710 $ 31,405 (1) Excluding accrued interest receivable. Average Recorded Investment (1) Interest Income on Accrual Basis Interest Income on Cash Basis Total Interest Income (In thousands) Year Ended December 31, 2017 FHA/VA-Guaranteed loans $ - $ - $ - $ - Other residential mortgage loans 438,847 17,316 2,478 19,794 Commercial: Commercial mortgage loans 180,283 1,983 390 2,373 Commercial and Industrial loans 121,233 1,447 403 1,850 Construction: Land 14,174 372 38 410 Construction-commercial 35,996 - - - Construction-residential 252 - - - Consumer: Auto loans 24,618 1,781 - 1,781 Finance leases 2,428 168 - 168 Other consumer loans 14,324 1,176 144 1,320 $ 832,155 $ 24,243 $ 3,453 $ 27,696 (1) Excluding accrued interest receivable. The following table shows the activity for impaired loans for 2019, 2018 and 2017: 2019 2018 2017 (In thousands) Impaired Loans: Balance at beginning of year $ 760,269 $ 790,308 $ 887,905 Loans determined impaired during the year 52,639 250,524 140,977 Charge-offs (1) ( 37,806) ( 57,152) ( 82,113) Loans sold, net of charge-offs - ( 4,121) ( 53,245) Increases to existing impaired loans 1,928 7,335 8,292 Foreclosures ( 25,310) ( 36,453) ( 37,513) Loans no longer considered impaired ( 3,355) ( 5,417) ( 3,526) Loans transferred to held for sale - ( 74,052) - Paid in full, partial payments and other ( 179,193) ( 110,703) ( 70,469) Balance at end of year $ 569,172 $ 760,269 $ 790,308
Changes in Allowance for Loan and Lease Losses [Table Text Block]	The changes in the allowance for loan and lease losses were as follows for the indicated periods: Residential Commercial Commercial and Construction Consumer Year Ended December 31, 2019 Mortgage Loans Mortgage Loans Industrial Loans Loans Loans Total (In thousands) Allowance for loan and lease losses: Beginning balance $ 50,794 $ 55,581 $ 32,546 $ 3,592 $ 53,849 $ 196,362 Charge-offs ( 22,742) ( 15,088) ( 7,206) ( 391) ( 52,160) ( 97,587) Recoveries 2,663 398 3,554 665 8,859 16,139 Provision (release) 14,091 ( 1,697) ( 13,696) ( 1,496) 43,023 40,225 Ending balance $ 44,806 $ 39,194 $ 15,198 $ 2,370 $ 53,571 $ 155,139 Ending balance: specific reserve for impaired loans $ 17,037 $ 6,788 $ 7,123 $ 820 $ 4,347 $ 36,115 Ending balance: PCI loans (1) $ 11,063 $ 371 $ - $ - $ - $ 11,434 Ending balance: general allowance $ 16,706 $ 32,035 $ 8,075 $ 1,550 $ 49,224 $ 107,590 Loans held for investment: Ending balance $ 2,933,773 $ 1,444,586 $ 2,230,876 $ 111,317 $ 2,281,653 $ 9,002,205 Ending balance: impaired loans $ 377,240 $ 78,557 $ 76,533 $ 11,422 $ 25,420 $ 569,172 Ending balance: PCI loans $ 133,744 $ 2,956 $ - $ - $ - $ 136,700 Ending balance: loans with general allowance $ 2,422,789 $ 1,363,073 $ 2,154,343 $ 99,895 $ 2,256,233 $ 8,296,333 Residential Commercial Commercial and Construction Consumer Year Ended December 31, 2018 Mortgage Loans Mortgage Loans Industrial Loans Loans Loans Total (In thousands) Allowance for loan and lease losses: Beginning balance $ 58,975 $ 48,493 $ 48,871 $ 4,522 $ 70,982 $ 231,843 Charge-offs (2) ( 24,775) ( 23,911) ( 9,704) ( 8,296) ( 50,106) ( 116,792) Recoveries 3,392 7,925 1,819 334 8,588 22,058 Provision (release) (2) 13,202 23,074 ( 8,440) 7,032 24,385 59,253 Ending balance $ 50,794 $ 55,581 $ 32,546 $ 3,592 $ 53,849 $ 196,362 Ending balance: specific reserve for impaired loans $ 19,965 $ 17,684 $ 9,693 $ 760 $ 5,874 $ 53,976 Ending balance: PCI loans (1) $ 10,954 $ 400 $ - $ - $ - $ 11,354 Ending balance: general allowance $ 19,875 $ 37,497 $ 22,853 $ 2,832 $ 47,975 $ 131,032 Loans held for investment: Ending balance $ 3,163,208 $ 1,522,662 $ 2,148,111 $ 79,429 $ 1,944,713 $ 8,858,123 Ending balance: impaired loans $ 403,732 $ 227,426 $ 91,192 $ 6,593 $ 31,326 $ 760,269 Ending balance: PCI loans $ 143,176 $ 3,464 $ - $ - $ - $ 146,640 Ending balance: loans with general allowance $ 2,616,300 $ 1,291,772 $ 2,056,919 $ 72,836 $ 1,913,387 $ 7,951,214 Residential Commercial Commercial and Construction Consumer Year Ended December 31, 2017 Mortgage Loans Mortgage Loans Industrial Loans Loans Loans Total (In thousands) Allowance for loan and lease losses: Beginning balance $ 33,980 $ 57,261 $ 61,953 $ 2,562 $ 49,847 $ 205,603 Charge-offs ( 28,186) ( 39,092) ( 19,855) ( 3,607) ( 44,030) ( 134,770) Recoveries 2,437 270 5,755 732 7,562 16,756 Provision 50,744 30,054 1,018 4,835 57,603 144,254 Ending balance $ 58,975 $ 48,493 $ 48,871 $ 4,522 $ 70,982 $ 231,843 Ending balance: specific reserve for impaired loans $ 22,086 $ 9,783 $ 12,359 $ 2,017 $ 5,165 $ 51,410 Ending balance: PCI loans (1) $ 10,873 $ 378 $ - $ - $ - $ 11,251 Ending balance: general allowance $ 26,016 $ 38,332 $ 36,512 $ 2,505 $ 65,817 $ 169,182 Loans held for investment: Ending balance $ 3,290,957 $ 1,614,972 $ 2,083,253 $ 111,397 $ 1,749,897 $ 8,850,476 Ending balance: impaired loans $ 433,434 $ 152,914 $ 118,300 $ 47,266 $ 38,394 $ 790,308 Ending balance: PCI loans loans $ 153,991 $ 4,183 $ - $ - $ - $ 158,174 Ending balance: loans with general allowance $ 2,703,532 $ 1,457,875 $ 1,964,953 $ 64,131 $ 1,711,503 $ 7,901,994 The tables below present the allowance for loan and lease losses and the carrying value of loans by portfolio segment as of December 31, 2019 and 2018: As of December 31, 2019 Residential Mortgage Loans Commercial Mortgage Loans Commercial and Industrial Loans Consumer Loans Construction Loans (Dollars in thousands) Total Impaired loans without specific reserves: Principal balance of loans, net of charge-offs $ 111,960 $ 44,120 $ 27,209 $ 2,839 $ 1,184 $ 187,312 Impaired loans with specific reserves: Principal balance of loans, net of charge-offs $ 265,280 $ 34,437 $ 49,324 $ 8,583 $ 24,236 $ 381,860 Allowance for loan and lease losses 17,037 6,788 7,123 820 4,347 36,115 Allowance for loan and lease losses to principal balance 6.42 % 19.71 % 14.44 % 9.55 % 17.94 % 9.46 % PCI loans: Carrying value of PCI loans $ 133,744 $ 2,956 - - - $ 136,700 Allowance for PCI loans 11,063 371 - - - 11,434 Allowance for PCI loans to carrying value 8.27 % 12.55 % - - - 8.36 % Loans with general allowance: Principal balance of loans $ 2,422,789 $ 1,363,073 $ 2,154,343 $ 99,895 $ 2,256,233 $ 8,296,333 Allowance for loan and lease losses 16,706 32,035 8,075 1,550 49,224 107,590 Allowance for loan and lease losses to principal balance 0.69 % 2.35 % 0.37 % 1.55 % 2.18 % 1.30 % Total loans held for investment: Principal balance of loans $ 2,933,773 $ 1,444,586 $ 2,230,876 $ 111,317 $ 2,281,653 $ 9,002,205 Allowance for loan and lease losses 44,806 39,194 15,198 2,370 53,571 155,139 Allowance for loan and lease losses to principal balance (1) 1.53 % 2.71 % 0.68 % 2.13 % 2.35 % 1.72 % As of December 31, 2018 Residential Mortgage Loans Commercial Mortgage Loans Commercial and Industrial Loans Consumer Loans Construction Loans (Dollars in thousands) Total Impaired loans without specific reserves: Principal balance of loans, net of charge-offs $ 110,238 $ 43,358 $ 30,030 $ 2,431 $ 2,340 $ 188,397 Impaired loans with specific reserves: Principal balance of loans, net of charge-offs $ 293,494 $ 184,068 $ 61,162 $ 4,162 $ 28,986 $ 571,872 Allowance for loan and lease losses 19,965 17,684 9,693 760 5,874 53,976 Allowance for loan and lease losses to principal balance 6.80 % 9.61 % 15.85 % 18.26 % 20.26 % 9.44 % PCI loans: Carrying value of PCI loans $ 143,176 $ 3,464 - - - $ 146,640 Allowance for PCI loans 10,954 400 - - - 11,354 Allowance for PCI loans to carrying value 7.65 % 11.55 % - - - 7.74 % Loans with general allowance: Principal balance of loans $ 2,616,300 $ 1,291,772 $ 2,056,919 $ 72,836 $ 1,913,387 $ 7,951,214 Allowance for loan and lease losses 19,875 37,497 22,853 2,832 47,975 131,032 Allowance for loan and lease losses to principal balance 0.76 % 2.90 % 1.11 % 3.89 % 2.51 % 1.65 % Total loans held for investment: Principal balance of loans $ 3,163,208 $ 1,522,662 $ 2,148,111 $ 79,429 $ 1,944,713 $ 8,858,123 Allowance for loan and lease losses 50,794 55,581 32,546 3,592 53,849 196,362 Allowance for loan and lease losses to principal balance (1) 1.61 % 3.65 % 1.52 % 4.52 % 2.77 % 2.22 %
Entity Loan Modification Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings On Financing Receivables Table [Text Block]	Selected information on all of the Corporation's TDR loans held for investment based on the recorded investment by loan class and modification type is summarized in the following tables as of the indicated dates: As of December 31, 2019 Interest rate below market Maturity or term extension Combination of reduction in interest rate and extension of maturity Forgiveness of principal and/or interest Forbearance Agreement Other (1) Total (In thousands) TDRs: Non-FHA/VA residential mortgage loans $ 19,570 $ 11,600 $ 221,667 $ - $ 142 $ 63,670 $ 316,649 Commercial mortgage loans 3,810 2,276 40,896 - 19,848 8,149 74,979 Commercial and Industrial loans 579 16,160 12,077 142 692 37,199 66,849 Construction loans: Land 24 1,955 1,639 - - 189 3,807 Construction-commercial - - - - - - - Construction-residential - 514 - - - - 514 Consumer loans - Auto - 898 7,393 - - 6,249 14,540 Finance leases - 40 1,066 - - 426 1,532 Consumer loans - Other 2,085 1,239 4,565 204 - 1,034 9,127 Total TDRs $ 26,068 $ 34,682 $ 289,303 $ 346 $ 20,682 $ 116,916 $ 487,997 As of December 31, 2018 Interest rate below market Maturity or term extension Combination of reduction in interest rate and extension of maturity Forgiveness of principal and/or interest Forbearance Agreement Other (1) Total (In thousands) TDRs: Non-FHA/VA residential mortgage loans $ 22,729 $ 11,586 $ 239,348 $ - $ 145 $ 60,094 $ 333,902 Commercial mortgage loans (2) 3,966 2,005 122,709 - - 9,269 137,949 Commercial and Industrial loans (3) 664 19,769 13,323 - 2,673 38,492 74,921 Construction loans: Land 16 2,524 1,933 - - 292 4,765 Construction-commercial - - - - - - - Construction-residential - 545 - - - 217 762 Consumer loans - Auto - 1,517 10,085 - - 6,429 18,031 Finance leases - 101 1,186 - - 648 1,935 Consumer loans - Other 1,396 1,236 5,651 275 - 1,824 10,382 Total TDRs $ 28,771 $ 39,283 $ 394,235 $ 275 $ 2,818 $ 117,265 $ 582,647 The following table presents the Corporation's TDR loans held for investment activity: Year Ended Year Ended Year Ended December 31, 2019 December 31, 2018 December 31, 2017 (In thousands) Beginning balance of TDRs $ 582,647 $ 587,219 $ 647,048 New TDRs 63,433 171,857 93,837 Increases to existing TDRs 1,840 7,027 6,575 Charge-offs post-modification (1)(2) ( 10,342) ( 27,951) ( 32,963) Sales, net of charge-offs - - ( 53,245) Foreclosures ( 12,872) ( 21,591) ( 25,059) TDRs transferred to held for sale, net of charge-offs - ( 34,541) - Paid-off, partial payments and other (3) ( 136,709) ( 99,373) ( 48,974) Ending balance of TDRs $ 487,997 $ 582,647 $ 587,219 The following table provides a breakdown of the TDR loans held for investment by those in accrual and nonaccrual status as of the indicated dates: As of December 31, 2019 Accrual Nonaccrual (1) Total TDRs (In thousands) Non-FHA/VA residential mortgage loans $ 265,746 $ 50,903 $ 316,649 Commercial mortgage loans 51,062 23,917 74,979 Commercial and Industrial loans 59,689 7,160 66,849 Construction loans: Land 2,724 1,083 3,807 Construction-commercial - - - Construction-residential 514 - 514 Consumer loans - Auto 8,556 5,984 14,540 Finance leases 1,502 30 1,532 Consumer loans - Other 8,464 663 9,127 Total TDRs $ 398,257 $ 89,740 $ 487,997 As of December 31, 2018 Accrual Nonaccrual (1) Total TDRs (In thousands) Non-FHA/VA residential mortgage loans $ 271,766 $ 62,136 $ 333,902 Commercial mortgage loans (2) 116,830 21,119 137,949 Commercial and Industrial loans (3) 66,603 8,318 74,921 Construction loans: Land 1,071 3,694 4,765 Construction-commercial - - - Construction-residential - 762 762 Consumer loans - Auto 11,842 6,189 18,031 Finance leases 1,791 144 1,935 Consumer loans - Other 9,025 1,357 10,382 Total TDRs $ 478,928 $ 103,719 $ 582,647 Loan modifications that are considered TDR loans completed during 2019, 2018 and 2017 were as follows: Year Ended December 31, 2019 Number of Contracts Pre-modification Outstanding Recorded Investment Post-modification Outstanding Recorded Investment (In thousands) TDRs: Non-FHA/VA residential mortgage loans 118 $ 14,606 $ 14,084 Commercial mortgage loans 13 40,988 38,750 Commercial and Industrial loans 14 1,754 1,750 Construction loans: Land 4 118 117 Construction-residential - - - Consumer loans - Auto 256 4,201 4,154 Finance leases 42 804 801 Consumer loans - Other 862 3,713 3,777 Total TDRs 1,309 $ 66,184 $ 63,433 Year Ended December 31, 2018 Number of Contracts Pre-modification Outstanding Recorded Investment Post-modification Outstanding Recorded Investment (In thousands) TDRs: Non-FHA/VA residential mortgage loans 104 $ 14,827 $ 14,159 Commercial mortgage loans 11 138,994 138,785 Commercial and Industrial loans 10 9,141 8,786 Construction loans: Land 1 97 97 Construction-residential 1 587 558 Consumer loans - Auto 285 4,500 4,489 Finance leases 48 1,001 987 Consumer loans - Other 768 3,935 3,996 Total TDRs 1,228 $ 173,082 $ 171,857 Year Ended December 31, 2017 Number of Contracts Pre-modification Outstanding Recorded Investment Post-modification Outstanding Recorded Investment (In thousands) TDRs: Non-FHA/VA residential mortgage loans 132 $ 19,484 $ 19,263 Commercial mortgage loans 13 25,722 25,018 Commercial and Industrial loans 21 39,428 39,338 Construction loans: Land 4 122 125 Construction-Residential - - - Consumer loans - Auto 426 6,451 6,451 Finance leases 22 548 548 Consumer loans - Other 657 3,041 3,094 Total TDRs 1,275 $ 94,796 $ 93,837
Entity Loan Modification Program [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings On Financing Receivables Table [Text Block]	Loan modifications considered TDR loans that defaulted during the years ended December 31, 2019, 2018, and 2017, and had become TDR loans during the 12-months preceding the default date, were as follows: Year Ended December 31, 2019 2018 2017 Number of Contracts Recorded Investment Number of Contracts Recorded Investment Number of Contracts Recorded Investment (In thousands) Non-FHA/VA residential mortgage loans 11 $ 2,019 15 $ 1,994 46 $ 5,355 Commercial mortgage loans - - - - 1 57 Consumer loans - Auto 130 2,221 62 1,003 14 207 Finance leases 1 14 1 22 1 39 Consumer loans - Other 78 247 56 206 99 387 Total 220 $ 4,501 134 $ 3,225 161 $ 6,045
Entity Loan Modification Program [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | AB Note Restructure Workout Strategy [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Troubled Debt Restructurings On Financing Receivables Table [Text Block]	The following table provides additional information about the volume of this type of loan restructuring as of December 31, 2019, 2018, and 2017, and its effect on the allowance for loan and lease losses in 2019, 2018 and 2017: (In thousands) December 31, 2019 December 31, 2018 December 31, 2017 Beginning balance $ 33,840 $ 35,577 $ 36,971 New TDR loan splits 20,059 32,104 - Paid-off and partial payments ( 2,671) ( 33,841) ( 1,394) Ending balance $ 51,228 $ 33,840 $ 35,577 (In thousands) December 31, 2019 December 31, 2018 December 31, 2017 Allowance for loan losses at the beginning of the year $ 473 $ 3,846 $ 5,141 Charges (release) to the provision for loan losses 3,057 ( 10,789) ( 1,295) Net loan loss recoveries - 7,416 - Allowance for loan losses at the end of the year $ 3,530 $ 473 $ 3,846
Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Portfolio Held for Investment [Table Text Block]	The carrying amounts of PCI loans were as follows as of December 31, 2019 and 2018: As of As of December 31, December 31, 2019 2018 (In thousands) Residential mortgage loans $ 133,744 $ 143,176 Commercial mortgage loans 2,956 3,464 Total PCI loans $ 136,700 $ 146,640 Allowance for loan losses ( 11,434) ( 11,354) Total PCI loans, net of allowance for loan losses $ 125,266 $ 135,286
Corporation's Aging of Loans Held for Investment Portfolio [Table Text Block]	The following tables present PCI loans by past due status as of December 31, 2019 and 2018: As of December 31, 2019 30-59 Days 60-89 Days 90 days or more Total Past Due Total PCI loans Current (In thousands) Residential mortgage loans $ - $ 7,530 $ 25,018 $ 32,548 $ 101,196 $ 133,744 Commercial mortgage loans - - 2,020 2,020 936 2,956 Total (1) $ - $ 7,530 $ 27,038 $ 34,568 $ 102,132 $ 136,700 As of December 31, 2018 30-59 Days 60-89 Days 90 days or more Total Past Due Total PCI loans Current (In thousands) Residential mortgage loans $ - $ 6,979 $ 26,932 $ 33,911 $ 109,265 $ 143,176 Commercial mortgage loans - - 2,512 2,512 952 3,464 Total (1) $ - $ 6,979 $ 29,444 $ 36,423 $ 110,217 $ 146,640
Accretable Yield [Table Text Block]	Changes in the accretable yield of PCI loans for the years ended December 31, 2019, 2018 and 2017 were as follows: December 31, 2019 December 31, 2018 December 31, 2017 (In thousands) Balance at beginning of year $ 93,493 $ 103,682 $ 116,462 Accretion recognized in earnings ( 9,370) ( 10,189) ( 10,810) Reclassification (to) from non-accretable - - ( 1,970) Balance at end of year $ 84,123 $ 93,493 $ 103,682
Changes In Carrying Amount Of Purchased Credit Impaired Loans Table [Text Block]	Changes in the carrying amount of PCI loans accounted for pursuant to ASC Topic 310-30 were as follows: Year ended Year ended December 31, 2019 December 31, 2018 (In thousands) Balance at beginning of year $ 146,640 $ 158,174 Accretion 9,370 10,189 Collections ( 15,645) ( 16,749) Foreclosures ( 3,665) ( 4,974) Ending balance $ 136,700 $ 146,640 Allowance for loan losses ( 11,434) ( 11,354) Ending balance, net of allowance for loan losses $ 125,266 $ 135,286
Changes in Allowance for Loan and Lease Losses [Table Text Block]	Changes in the allowance for loan losses related to PCI loans were as follows: Year ended December 31, 2019 December 31, 2018 Balance at beginning of year $ 11,354 $ 11,251 Provision for loan losses 80 103 Balance at end of period $ 11,434 $ 11,354

ALLOWANCE FOR LOAN AND LEASE _2

ALLOWANCE FOR LOAN AND LEASE LOSSES (Tables)	12 Months Ended
	Dec. 31, 2019
Loans and Leases Receivable Disclosure [Abstract]
Allowance For Credit Losses On Financing Receivables Table [Text Block]	The changes in the allowance for loan and lease losses were as follows for the indicated periods: Residential Commercial Commercial and Construction Consumer Year Ended December 31, 2019 Mortgage Loans Mortgage Loans Industrial Loans Loans Loans Total (In thousands) Allowance for loan and lease losses: Beginning balance $ 50,794 $ 55,581 $ 32,546 $ 3,592 $ 53,849 $ 196,362 Charge-offs ( 22,742) ( 15,088) ( 7,206) ( 391) ( 52,160) ( 97,587) Recoveries 2,663 398 3,554 665 8,859 16,139 Provision (release) 14,091 ( 1,697) ( 13,696) ( 1,496) 43,023 40,225 Ending balance $ 44,806 $ 39,194 $ 15,198 $ 2,370 $ 53,571 $ 155,139 Ending balance: specific reserve for impaired loans $ 17,037 $ 6,788 $ 7,123 $ 820 $ 4,347 $ 36,115 Ending balance: PCI loans (1) $ 11,063 $ 371 $ - $ - $ - $ 11,434 Ending balance: general allowance $ 16,706 $ 32,035 $ 8,075 $ 1,550 $ 49,224 $ 107,590 Loans held for investment: Ending balance $ 2,933,773 $ 1,444,586 $ 2,230,876 $ 111,317 $ 2,281,653 $ 9,002,205 Ending balance: impaired loans $ 377,240 $ 78,557 $ 76,533 $ 11,422 $ 25,420 $ 569,172 Ending balance: PCI loans $ 133,744 $ 2,956 $ - $ - $ - $ 136,700 Ending balance: loans with general allowance $ 2,422,789 $ 1,363,073 $ 2,154,343 $ 99,895 $ 2,256,233 $ 8,296,333 Residential Commercial Commercial and Construction Consumer Year Ended December 31, 2018 Mortgage Loans Mortgage Loans Industrial Loans Loans Loans Total (In thousands) Allowance for loan and lease losses: Beginning balance $ 58,975 $ 48,493 $ 48,871 $ 4,522 $ 70,982 $ 231,843 Charge-offs (2) ( 24,775) ( 23,911) ( 9,704) ( 8,296) ( 50,106) ( 116,792) Recoveries 3,392 7,925 1,819 334 8,588 22,058 Provision (release) (2) 13,202 23,074 ( 8,440) 7,032 24,385 59,253 Ending balance $ 50,794 $ 55,581 $ 32,546 $ 3,592 $ 53,849 $ 196,362 Ending balance: specific reserve for impaired loans $ 19,965 $ 17,684 $ 9,693 $ 760 $ 5,874 $ 53,976 Ending balance: PCI loans (1) $ 10,954 $ 400 $ - $ - $ - $ 11,354 Ending balance: general allowance $ 19,875 $ 37,497 $ 22,853 $ 2,832 $ 47,975 $ 131,032 Loans held for investment: Ending balance $ 3,163,208 $ 1,522,662 $ 2,148,111 $ 79,429 $ 1,944,713 $ 8,858,123 Ending balance: impaired loans $ 403,732 $ 227,426 $ 91,192 $ 6,593 $ 31,326 $ 760,269 Ending balance: PCI loans $ 143,176 $ 3,464 $ - $ - $ - $ 146,640 Ending balance: loans with general allowance $ 2,616,300 $ 1,291,772 $ 2,056,919 $ 72,836 $ 1,913,387 $ 7,951,214 Residential Commercial Commercial and Construction Consumer Year Ended December 31, 2017 Mortgage Loans Mortgage Loans Industrial Loans Loans Loans Total (In thousands) Allowance for loan and lease losses: Beginning balance $ 33,980 $ 57,261 $ 61,953 $ 2,562 $ 49,847 $ 205,603 Charge-offs ( 28,186) ( 39,092) ( 19,855) ( 3,607) ( 44,030) ( 134,770) Recoveries 2,437 270 5,755 732 7,562 16,756 Provision 50,744 30,054 1,018 4,835 57,603 144,254 Ending balance $ 58,975 $ 48,493 $ 48,871 $ 4,522 $ 70,982 $ 231,843 Ending balance: specific reserve for impaired loans $ 22,086 $ 9,783 $ 12,359 $ 2,017 $ 5,165 $ 51,410 Ending balance: PCI loans (1) $ 10,873 $ 378 $ - $ - $ - $ 11,251 Ending balance: general allowance $ 26,016 $ 38,332 $ 36,512 $ 2,505 $ 65,817 $ 169,182 Loans held for investment: Ending balance $ 3,290,957 $ 1,614,972 $ 2,083,253 $ 111,397 $ 1,749,897 $ 8,850,476 Ending balance: impaired loans $ 433,434 $ 152,914 $ 118,300 $ 47,266 $ 38,394 $ 790,308 Ending balance: PCI loans loans $ 153,991 $ 4,183 $ - $ - $ - $ 158,174 Ending balance: loans with general allowance $ 2,703,532 $ 1,457,875 $ 1,964,953 $ 64,131 $ 1,711,503 $ 7,901,994 The tables below present the allowance for loan and lease losses and the carrying value of loans by portfolio segment as of December 31, 2019 and 2018: As of December 31, 2019 Residential Mortgage Loans Commercial Mortgage Loans Commercial and Industrial Loans Consumer Loans Construction Loans (Dollars in thousands) Total Impaired loans without specific reserves: Principal balance of loans, net of charge-offs $ 111,960 $ 44,120 $ 27,209 $ 2,839 $ 1,184 $ 187,312 Impaired loans with specific reserves: Principal balance of loans, net of charge-offs $ 265,280 $ 34,437 $ 49,324 $ 8,583 $ 24,236 $ 381,860 Allowance for loan and lease losses 17,037 6,788 7,123 820 4,347 36,115 Allowance for loan and lease losses to principal balance 6.42 % 19.71 % 14.44 % 9.55 % 17.94 % 9.46 % PCI loans: Carrying value of PCI loans $ 133,744 $ 2,956 - - - $ 136,700 Allowance for PCI loans 11,063 371 - - - 11,434 Allowance for PCI loans to carrying value 8.27 % 12.55 % - - - 8.36 % Loans with general allowance: Principal balance of loans $ 2,422,789 $ 1,363,073 $ 2,154,343 $ 99,895 $ 2,256,233 $ 8,296,333 Allowance for loan and lease losses 16,706 32,035 8,075 1,550 49,224 107,590 Allowance for loan and lease losses to principal balance 0.69 % 2.35 % 0.37 % 1.55 % 2.18 % 1.30 % Total loans held for investment: Principal balance of loans $ 2,933,773 $ 1,444,586 $ 2,230,876 $ 111,317 $ 2,281,653 $ 9,002,205 Allowance for loan and lease losses 44,806 39,194 15,198 2,370 53,571 155,139 Allowance for loan and lease losses to principal balance (1) 1.53 % 2.71 % 0.68 % 2.13 % 2.35 % 1.72 % As of December 31, 2018 Residential Mortgage Loans Commercial Mortgage Loans Commercial and Industrial Loans Consumer Loans Construction Loans (Dollars in thousands) Total Impaired loans without specific reserves: Principal balance of loans, net of charge-offs $ 110,238 $ 43,358 $ 30,030 $ 2,431 $ 2,340 $ 188,397 Impaired loans with specific reserves: Principal balance of loans, net of charge-offs $ 293,494 $ 184,068 $ 61,162 $ 4,162 $ 28,986 $ 571,872 Allowance for loan and lease losses 19,965 17,684 9,693 760 5,874 53,976 Allowance for loan and lease losses to principal balance 6.80 % 9.61 % 15.85 % 18.26 % 20.26 % 9.44 % PCI loans: Carrying value of PCI loans $ 143,176 $ 3,464 - - - $ 146,640 Allowance for PCI loans 10,954 400 - - - 11,354 Allowance for PCI loans to carrying value 7.65 % 11.55 % - - - 7.74 % Loans with general allowance: Principal balance of loans $ 2,616,300 $ 1,291,772 $ 2,056,919 $ 72,836 $ 1,913,387 $ 7,951,214 Allowance for loan and lease losses 19,875 37,497 22,853 2,832 47,975 131,032 Allowance for loan and lease losses to principal balance 0.76 % 2.90 % 1.11 % 3.89 % 2.51 % 1.65 % Total loans held for investment: Principal balance of loans $ 3,163,208 $ 1,522,662 $ 2,148,111 $ 79,429 $ 1,944,713 $ 8,858,123 Allowance for loan and lease losses 50,794 55,581 32,546 3,592 53,849 196,362 Allowance for loan and lease losses to principal balance (1) 1.61 % 3.65 % 1.52 % 4.52 % 2.77 % 2.22 %

LOANS HELD FOR SALE (Tables)

LOANS HELD FOR SALE (Tables)	12 Months Ended
	Dec. 31, 2019
Receivables Held-for-sale [Abstract]
Portfolio of Loans Held for Sale [Table Text Block]	The Corporation’s loans held-for-sale portfolio as of the dates indicated was composed of: December 31, 2019 2018 (In thousands) Residential mortgage loans $ 39,477 $ 27,075 Construction loans - 3,015 Commercial and Industrial loans (1) - 1,725 Commercial mortgage loans (1) - 11,371 Total $ 39,477 $ 43,186

OTHER REAL ESTATE OWNED (Tables

OTHER REAL ESTATE OWNED (Tables)	12 Months Ended
	Dec. 31, 2019
Real Estate Owned, Disclosure of Detailed Components [Abstract]
Schedule Of Other Real Estate Assets And Foreclosed Properties [Table Text Block]	The following table presents OREO inventory as of the dates indicated: December 31, (In thousands) 2019 2018 OREO OREO balances, carrying value: Residential (1) $ 46,912 $ 49,239 Commercial 47,271 71,838 Construction 7,443 10,325 Total $ 101,626 $ 131,402

RELATED PARTY TRANSACTIONS (Tab

RELATED PARTY TRANSACTIONS (Tables)	12 Months Ended
	Dec. 31, 2019
Related Party Transactions [Abstract]
Schedule of Related Party Transactions [Table Text Block]	The Corporation granted loans to its directors, executive officers, and certain related individuals or entities in the ordinary course of business. The movement and balance of these loans were as follows: Amount (In thousands) Balance at December 31, 2017 $ 1,084 New loans 57 Payments ( 117) Other changes - Balance at December 31, 2018 1,024 New loans 154 Payments ( 146) Other changes - Balance at December 31, 2019 $ 1,032

PREMISES AND EQUIPMENT (Tables)

PREMISES AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2019
Property Plant And Equipment [Abstract]
Premises and Equipment [Table Text Block]	Premises and equipment comprise: Useful Life In Years As of December 31, Minimum Maximum 2019 2018 (Dollars in thousands) Buildings and improvements 10 35 $ 135,263 $ 131,206 Leasehold improvements 1 10 56,530 54,734 Furniture and equipment 2 10 146,835 176,116 338,628 362,056 Accumulated depreciation and amortization ( 228,712) ( 256,355) 109,916 105,701 Land 22,939 24,640 Projects in progress 17,134 17,473 Total premises and equipment, net $ 149,989 $ 147,814

GOODWILL AND OTHER INTANGIBLES

GOODWILL AND OTHER INTANGIBLES (Tables)	12 Months Ended
	Dec. 31, 2019
Goodwill and other Intangible Assets [Abstract]
Gross Amount and Accumulated Amortization of Other Intangible Assets [Table Text Block]	The following table shows the gross amount and accumulated amortization of the Corporation’s intangible assets recognized as part of Other assets in the consolidated statements of financial condition as of the indicated dates: As of December 31, 2019 2018 (Dollars in thousands) Core deposit intangible: Gross amount $ 51,664 $ 51,664 Accumulated amortization (1) ( 48,176) ( 47,329) Net carrying amount $ 3,488 $ 4,335 Remaining amortization period (in years) 5.1 6.0 Purchased credit card relationship intangible: Gross amount $ 24,465 $ 24,465 Accumulated amortization (2) ( 20,850) ( 18,763) Net carrying amount $ 3,615 $ 5,702 Remaining amortization period (in years) 1.9 2.9 Insurance customer relationship intangible: Gross amount $ 1,067 $ 1,067 Accumulated amortization (3) ( 597) ( 445) Net carrying amount $ 470 $ 622 Remaining amortization period (in years) 3.0 4.0
Schedule of Expected Amortization Expense [Table Text Block]	The estimated aggregate annual amortization expense related to the intangible assets for future periods is as follows as of December 31, 2019: Amount (In thousands) 2020 $ 2,851 2021 2,656 2022 915 2023 622 2024 457 2025 and after 72

NON-CONSOLIDATED VARIABLE INT_2

NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS (Tables)	12 Months Ended
	Dec. 31, 2019
Transfers and Servicing [Abstract]
Changes in Servicing Assets [Table Text Block]	The changes in servicing assets are shown below for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Balance at beginning of year $ 27,428 $ 25,255 $ 26,244 Capitalization of servicing assets 4,039 3,864 3,318 Amortization ( 4,592) ( 2,895) ( 3,091) Temporary impairment (charges) recoveries , net ( 43) 1,289 ( 1,611) Other (1) ( 70) ( 85) 395 Balance at end of year $ 26,762 $ 27,428 $ 25,255
Changes in Impairment Allowance [Table Text Block]	Changes in the impairment allowance were as follows for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Balance at beginning of year $ 30 $ 1,451 $ 461 Temporary impairment charges 78 123 1,611 OTTI of servicing assets - ( 132) ( 621) Recoveries ( 35) ( 1,412) - Balance at end of year $ 73 $ 30 $ 1,451
Components of Net Servicing Income [Table Text Block]	The components of net servicing income, included as part of mortgage banking activities in the consolidated statements of income, are shown below for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Servicing fees $ 8,522 $ 8,704 $ 7,630 Late charges and prepayment penalties 610 510 405 Adjustment for loans repurchased ( 70) ( 85) 395 Other ( 15) ( 8) ( 35) Servicing income, gross 9,047 9,121 8,395 Amortization and impairment of servicing assets ( 4,635) ( 1,606) ( 4,702) Servicing income, net $ 4,412 $ 7,515 $ 3,693
Key Economic Assumptions Used in Determining Fair Value at Time of Sale of Loans [Table Text Block]	The Corporation’s servicing assets are subject to prepayment and interest rate risks. Key economic assumptions used in determining the fair value at the time of sale of the related mortgages ranged as follows for the indicated periods: Maximum Minimum Year Ended December 31, 2019 Constant prepayment rate: Government-guaranteed mortgage loans 6.4 % 6.2 % Conventional conforming mortgage loans 6.9 % 6.7 % Conventional non-conforming mortgage loans 9.3 % 8.9 % Discount rate: Government-guaranteed mortgage loans 12.0 % 12.0 % Conventional conforming mortgage loans 10.0 % 10.0 % Conventional non-conforming mortgage loans 14.3 % 14.3 % Year Ended December 31, 2018 Constant prepayment rate: Government-guaranteed mortgage loans 6.0 % 5.6 % Conventional conforming mortgage loans 6.5 % 6.2 % Conventional non-conforming mortgage loans 10.3 % 9.1 % Discount rate: Government-guaranteed mortgage loans 12.0 % 12.0 % Conventional conforming mortgage loans 10.0 % 10.0 % Conventional non-conforming mortgage loans 14.3 % 14.3 % Year Ended December 31, 2017 Constant prepayment rate: Government-guaranteed mortgage loans 6.2 % 6.0 % Conventional conforming mortgage loans 6.7 % 6.3 % Conventional non-conforming mortgage loans 9.5 % 9.1 % Discount rate: Government-guaranteed mortgage loans 12.0 % 12.0 % Conventional conforming mortgage loans 10.0 % 10.0 % Conventional non-conforming mortgage loans 14.3 % 14.3 %
Weighted-Averages of Key Economic Assumptions in Valuation Model [Table Text Block]	The weighted averages of the key economic assumptions that the Corporation used in its valuation model and the sensitivity of the current fair value to immediate 10% and 20% adverse changes in those assumptions for mortgage loans as of December 31, 2019 and 2018 were as follows: 2019 2018 (In thousands) Carrying amount of servicing assets $ 26,762 $ 27,428 Fair value $ 31,027 $ 31,738 Weighted-average expected life (in years) 8.39 8.45 Constant prepayment rate (weighted-average annual rate) 6.45 % 6.26 % Decrease in fair value due to 10% adverse change $ 748 $ 747 Decrease in fair value due to 20% adverse change $ 1,464 $ 1,462 Discount rate (weighted-average annual rate) 11.27 % 11.25 % Decrease in fair value due to 10% adverse change $ 1,450 $ 1,528 Decrease in fair value due to 20% adverse change $ 2,783 $ 2,930

DEPOSITS (Tables)

DEPOSITS (Tables)	12 Months Ended
	Dec. 31, 2019
Deposits [Abstract]
Summary of Deposit Balances [Table Text Block]	The following table summarizes deposit balances as of the dates indicated: December 31, 2019 2018 (In thousands) Type of account and interest rate: Non-interest-bearing checking accounts $ 2,367,856 $ 2,395,481 Interest-bearing savings accounts - 0.05% to 2.00% (2018- 0.05% to 0.40%) 2,437,345 2,334,949 Interest-bearing checking accounts - 0.05% to 1.00% (2018- 0.05% to 1.00%) 1,412,390 1,304,043 Certificates of deposit- 0.10% to 4.00% (2018- 0.10% to 4.00%) 2,695,749 2,404,644 Brokered certificates of deposit- 1.20% to 3.00% (2018- 1.10% to 3.00%) 435,089 555,597 $ 9,348,429 $ 8,994,714
Schedule of contractual maturities of CDs	The following table presents the contractual maturities of CDs, including brokered CDs, as of December 31, 2019: Total (In thousands) Three months or less $ 553,322 Over three months to six months 447,694 Over six months to one year 770,191 Over one year to two years 744,805 Over two years to three years 323,033 Over three years to four years 161,959 Over four years to five years 122,722 Over five years 7,112 Total $ 3,130,838
Brokered Certificates Of Deposit Mature [Table Text Block]	Brokered CDs mature as follows: December 31, 2019 (In thousands) Three months or less $ 61,157 Over three months to six months 51,368 Over six months to one year 118,852 Over one year to three years 169,483 Over three years to five years 28,281 Over five years 5,948 Total $ 435,089
Schedule of Interest Expenses on Deposits [Table Text Block]	A table showing interest expense on deposits for the indicated periods follows: Year Ended December 31, 2019 2018 2017 (In thousands) Interest-bearing checking accounts $ 6,071 $ 5,208 $ 4,566 Savings 16,017 14,298 12,520 Certificates of deposit 44,658 33,652 30,277 Brokered certificates of deposit 11,036 14,493 19,174 Total $ 77,782 $ 67,651 $ 66,537

SECURITIES SOLD UNDER AGREEME_2

SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of Repurchase Agreements [Abstract]
Schedule Of Repurchase Agreements [Table Text Block]	Securities sold under agreements to repurchase (repurchase agreements) as of the dates indicated consisted of the following: December 31, 2019 2018 (Dollars in thousands) Short-term fixed-rate repurchase agreement (1) $ - $ 50,086 Long-term fixed-rate repurchase agreement (2)(3)(4) 100,000 100,000 $ 100,000 $ 150,086 Repurchase agreements mature as follows as of the indicated date: December 31, 2019 (In thousands) Over one year to three years $ 100,000 Repurchase agreements as of December 31, 2019, grouped by counterparty, were as follows: Weighted-Average (Dollars in thousands) Amount Maturity (In Months) Counterparty JP Morgan Chase $ 100,000 25
Schedule of Securities Sold Under Repurchase Agreements [Table Text Block]	The following securities were sold under agreements to repurchase: December 31, 2019 Amortized Approximate Weighted Cost of Fair Value Average Underlying Balance of of Underlying Interest Rate Underlying Securities Securities Borrowing Securities of Security (Dollars in thousands) U.S. government-sponsored agencies $ 13,776 $ 4,723 $ 13,768 1.53 % MBS 115,630 95,277 116,397 2.31 % Total $ 129,406 $ 100,000 $ 130,165 Accrued interest receivable $ 347 December 31, 2018 Amortized Approximate Weighted Cost of Fair Value Average Underlying Balance of of Underlying Interest Rate Underlying Securities Securities Borrowing Securities of Security (Dollars in thousands) U.S. government-sponsored agencies $ 31,396 $ 25,276 $ 30,958 1.55 % MBS 155,963 124,810 151,777 2.39 % Total $ 187,359 $ 150,086 $ 182,735 Accrued interest receivable $ 483

ADVANCES FROM THE FEDERAL HOM_2

ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB) (Tables)	12 Months Ended
	Dec. 31, 2019
Federal Home Loan Bank, Advances, Fixed Rate [Abstract]
Summary of Advances from FHLB [Table Text Block]	The following is a summary of the advances from the FHLB as of the indicated dates: December 31, December 31, 2019 2018 (In thousands) Short-term Fixed-rate advances from FHLB (1) $ 35,000 $ - Long-term Fixed-rate advances from FHLB (2) 535,000 740,000 $ 570,000 $ 740,000 Advances from FHLB mature as follows as of December 31, 2019: December 31, 2019 (In thousands) Within one month $ 35,000 Over three to six months 45,000 Over six months to one year 50,000 Over one to three years 440,000 Total $ 570,000

OTHER BORROWINGS (Tables)

OTHER BORROWINGS (Tables)	12 Months Ended
	Dec. 31, 2019
Subordinated Borrowings [Abstract]
Components of Other Borrowings [Table Text Block]	Other borrowings, as of the indicated dates, consisted of: December 31, December 31, (In thousands) 2019 2018 Floating rate junior subordinated debentures (FBP Statutory Trust I) (1) $ 65,593 $ 65,593 Floating rate junior subordinated debentures (FBP Statutory Trust II) (2) 118,557 118,557 $ 184,150 $ 184,150

EARNINGS PER COMMON SHARE (Tabl

EARNINGS PER COMMON SHARE (Tables)	12 Months Ended
	Dec. 31, 2019
Earnings Per Share [Abstract]
Calculations of Earnings Per Common Share [Table Text Block]	The calculation of earnings per common share for the years ended December 31, 2019, 2018, and 2017 are as follows: Year Ended December 31, 2019 2018 2017 (In thousands, except per share information) Net income $ 167,377 $ 201,608 $ 66,956 Less: Preferred stock dividends ( 2,676) ( 2,676) ( 2,676) Net income attributable to common stockholders $ 164,701 $ 198,932 $ 64,280 Weighted-Average Shares: Average common shares outstanding 216,614 215,709 213,963 Average potential dilutive common shares 520 968 2,155 Average common shares outstanding - assuming dilution 217,134 216,677 216,118 Earnings per common share: Basic $ 0.76 $ 0.92 $ 0.30 Diluted $ 0.76 $ 0.92 $ 0.30

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2019
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Restricted Stock Activity Under Omnibus Plan [Table Text Block]	The following table summarizes the restricted stock activity in 2019 under the Omnibus Plan: 2019 Number of Weighted- shares of Average restricted Grant Date stock Fair Value Unvested shares outstanding at beginning of year 964,110 $ 4.79 Granted 314,212 10.97 Forfeited ( 14,000) 8.55 Vested ( 619,517) 3.97 Unvested shares outstanding at end of year 644,805 $ 8.51

OTHER NON- INTEREST EXPENSES (T

OTHER NON- INTEREST EXPENSES (Tables)	12 Months Ended
	Dec. 31, 2019
Other Non Interest Expenses [Abstract]
Schedule of other non interest expenses [Table Text Block]	A detail of other non-interest expenses is as follows for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Supplies and printing $ 1,966 $ 2,177 $ 1,990 Release of reserve for unfunded lending commitments ( 412) ( 264) ( 928) Amortization of intangible assets 3,086 3,593 4,403 Servicing and processing fees 4,781 4,991 4,421 Write-down and losses on sale of non-real estate repossessed properties 8 62 253 Insurance and supervisory fees 3,596 4,602 4,809 Provision for operational losses 2,164 1,774 2,568 Other 4,632 5,140 4,635 Total $ 19,821 $ 22,075 $ 22,151

OTHER NON- INTEREST INCOME (Tab

OTHER NON- INTEREST INCOME (Tables)	12 Months Ended
	Dec. 31, 2019
Other Non-interest Income [Abstract]
Schedule of other non interest income [Table Text Block]	A detail of other non-interest income is as follows for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Non-deferrable loan fees $ 2,789 $ 2,384 $ 2,109 Merchant-related income 5,635 5,244 4,209 ATM and POS fees 9,147 9,515 8,929 Credit and debit card interchange and other fees 11,759 9,598 7,587 Mail and cable transmission commissions 2,207 2,101 1,729 Fair value adjustments and gain (losses) on sales of commercial and construction loans held for sale 2,316 ( 3,186) - (Loss) gain from sales of fixed-assets ( 242) 1,366 149 Gain from insurance proceeds 660 537 - Other 5,638 5,183 4,142 Total $ 39,909 $ 32,742 $ 28,854

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]	The components of income tax expense (benefit) are summarized below for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Current income tax expense $ 16,986 $ 14,073 $ 8,179 Deferred income tax expense (benefit): Adjustment for enacted changes in tax law - 15,402 138 Reversal of deferred tax asset valuation allowance - ( 63,228) ( 1,792) Other deferred income tax expense (benefit) 55,009 22,783 ( 11,498) Total income tax expense (benefit) $ 71,995 $ ( 10,970) $ ( 4,973)
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]	The differences between the income tax expense applicable to income before the provision for income taxes and the amount computed by applying the statutory tax rate in Puerto Rico were as follows for the indicated periods: Year Ended December 31, 2019 2018 2017 Amount % of Pretax Income Amount % of Pretax Income Amount % of Pretax Income (Dollars in thousands) Computed income tax at statutory rate $ 89,764 37.5 % $ 74,349 39.0 % $ 24,173 39.0 % Federal and state taxes 4,467 1.6 % 3,768 2.0 % 2,335 3.8 % Benefit of net exempt income ( 24,811) ( 10.4) % ( 22,782) ( 12.0) % ( 16,596) ( 26.8) % Disallowed NOL carryforward resulting from net exempt income 15,887 6.6 % 14,904 7.8 % 5,091 8.2 % Deferred tax valuation allowance ( 14,108) ( 5.9) % ( 90,521) ( 47.5) % ( 10,037) ( 16.2) % Adjustments in net deferred tax assets due to changes in enacted tax rates - - % 15,402 8.1 % 138 0.2 % Change in tax status of subsidiaries - - % - - % ( 13,161) ( 21.2) % Share-based compensation windfall ( 1,165) ( 0.5) % ( 1,595) ( 0.8) % ( 40) - % Effect of capital losses subject to preferential rates - - % - - % 2,102 3.4 % Nondeductible expenses and other permanent differences ( 1,712) ( 0.7) % ( 839) ( 0.4) % ( 470) ( 0.8) % Tax return to provision adjustments 1,846 0.8 % 4 - % 607 1.0 % Other-net 1,827 1.1 % ( 3,660) ( 1.9) % 885 1.4 % Total income tax expense (benefit) $ 71,995 30.1 % $ ( 10,970) ( 5.7) % $ ( 4,973) ( 8.0) %
Schedule of significant components Deferred Tax Assets and Liabilities [Table Text Block]	Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and their tax bases. Significant components of the Corporation's deferred tax assets and liabilities as of December 31, 2019 and 2018 were as follows: December 31, 2019 2018 (In thousands) Deferred tax asset: NOL carryforward $ 259,717 $ 316,059 Allowance for loan and lease losses 58,793 75,010 Alternative Minimum Tax credits available for carryforward 13,813 9,238 Unrealized loss on OREO valuation 13,963 15,405 Unrealized loss on available-for-sale securities, net - 189 Settlement payment-closing agreement 7,031 7,031 Legal and other reserves 2,791 3,293 Reserve for insurance premium cancellations 613 610 Other 9,722 7,526 Total gross deferred tax assets $ 366,443 $ 434,361 Deferred tax liabilities: Differences between the assigned values and tax bases of assets and liabilities recognized in purchase business combinations 3,823 4,192 Servicing assets 8,906 9,143 Unrealized gain on available-for-sale securities, net 1,808 - Other 511 514 Total gross deferred tax liabilities 15,048 13,849 Valuation allowance ( 86,553) ( 100,661) Net deferred tax asset $ 264,842 $ 319,851

OTHER COMPREHENSIVE INCOME (L_2

OTHER COMPREHENSIVE INCOME (LOSS) (Tables)	12 Months Ended
	Dec. 31, 2019
Statement of Other Comprehensive Income [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]	The following table presents changes in Accumulated other comprehensive income (loss) for the years ended December 31, 2019, 2018 and 2017: Changes in Accumulated Other Comprehensive Income (Loss) by Component (1) Year ended December 31, 2019 2018 2017 (In thousands) Unrealized net holding gains (losses) on debt securities Beginning balance $ ( 40,415) $ ( 20,609) $ ( 34,383) Other comprehensive income (loss) 47,179 ( 19,806) 13,774 Ending balance $ 6,764 $ ( 40,415) $ ( 20,609) Unrealized holding losses on equity securities Beginning balance $ - $ ( 6) $ ( 7) Reclassification to retained earnings per ASU 2016-01 - 6 - Other comprehensive income - - 1 Ending balance $ - $ - $ ( 6) ______________________ (1) All amounts presented are net of tax.
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]	The following table presents the amounts reclassified out of each component of Accumulated other comprehensive income (loss) for the years ended December 31, 2019, 2018 and 2017: Reclassifications Out of Accumulated Other Comprehensive Income (Loss) Affected Line Item in the Consolidated Statements of Income Year ended December 31, 2019 2018 2017 (In thousands) Unrealized holding losses on debt securities Realized (loss) gain on sale of debt securities Net (loss) gain on sale of investments $ - $ ( 34) $ 371 OTTI on debt securities Net impairment losses on available-for-sale debt securities ( 497) ( 50) ( 12,231) Total before tax $ ( 497) $ ( 84) $ ( 11,860) Income tax - - - Total, net of tax $ ( 497) $ ( 84) $ ( 11,860)

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2019
Leases [Abstract]
Suplemental Information Related To Lessee Right Of Use Assets And Liabilities [Table Text Block]	Supplemental balance sheet information related to leases is as follows: As of December 31, 2019 (Dollars in thousands) Operating lease ROU asset $ 61,327 Operating lease liability $ 64,259 Operating lease weighted-average remaining lease term (in years) 10.8 Operating lease weighted-average discount rate 3.29% Supplemental cash flow information related to leases is as follows: Year Ended December 31, 2019 (In thousands) Operating cash flow from operating leases (1) $ 10,219 ROU assets obtained in exchange for operating lease liabilities (2) 10,762
Lessee, Operating Lease, Liability, Maturity [Table Text Block]	Maturities under lease liabilities as of December 31, 2019, were as follows: Amount (In thousands) 2020 $ 10,329 2021 9,678 2022 8,664 2023 6,982 2024 6,395 2025 and later years 35,205 Total lease payments 77,253 Less: imputed interest ( 12,994) Total present value of lease liability $ 64,259

FAIR VALUE (Tables)

FAIR VALUE (Tables)	12 Months Ended
	Dec. 31, 2019
Fair Value Disclosures [Abstract]
Assets and Liabilities Measured at Fair Value on Recurring Basis [Table Text Block]	Assets and liabilities measured at fair value on a recurring basis are summarized below as of December 31, 2019 and 2018: As of December 31, 2019 As of December 31, 2018 Fair Value Measurements Using Fair Value Measurements Using (In thousands) Level 1 Level 2 Level 3 Assets/Liabilities at Fair Value Level 1 Level 2 Level 3 Assets/Liabilities at Fair Value Assets: Securities available for sale : U.S. Treasury Securities $ 7,479 $ - $ - $ 7,479 $ 7,456 $ - $ - $ 7,456 Noncallable U.S. agencies debt securities - 146,777 - 146,777 - 319,124 - 319,124 Callable U.S. agencies debt securities and MBS - 1,950,331 - 1,950,331 - 1,594,622 - 1,594,622 Puerto Rico government obligations - 4,348 2,974 7,322 - 4,128 2,824 6,952 Private label MBS - - 11,116 11,116 - - 13,914 13,914 Other investments - - 500 500 - - 500 500 Equity securities 1,428 - - 1,428 418 - - 418 Derivatives, included in assets: Purchased interest rate cap agreements - 11 - 11 - 623 - 623 Interest rate lock commitments - 341 - 341 - 383 - 383 Forward loan sales commitments - 20 - 20 - 12 - 12 Liabilities: Derivatives, included in liabilities: Written interest rate cap agreements - 11 - 11 - 617 - 617 Forward contracts - 138 - 138 - 383 - 383
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]	The tables below present qualitative information for significant assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as of December 31, 2019 and December 31, 2018: December 31, 2019 Fair Value Valuation Technique Unobservable Input Range Weighted Average (Dollars in thousands) Minimum Maximum Investment securities available-for-sale: Private label MBS $ 11,116 Discounted cash flows Discount rate 13.7% 13.7% 13.7% Prepayment rate 6.8% 10.3% 7.9% Projected Cumulative Loss Rate 0.0% 7.4% 2.8% Puerto Rico government obligations 2,974 Discounted cash flows Discount rate 6.9% 6.9% 6.9% Prepayment rate 3.0% 3.0% 3.0% December 31, 2018 Fair Value Valuation Technique Unobservable Input Range Weighted Average (Dollars in thousands) Minimum Maximum Investment securities available-for-sale: Private label MBS $ 13,914 Discounted cash flows Discount rate 14.5% 14.5% 14.5% Prepayment rate 3.3% 20.9% 11.4% Projected Cumulative Loss Rate 0.0% 6.8% 3.0% Puerto Rico government obligations 2,824 Discounted cash flows Discount rate 6.3% 6.3% 6.3% Prepayment rate 3.0% 3.0% 3.0%
Schedule Of Changes In Unrealized Gains Losses [Table Text Block]	The table below summarizes changes in unrealized gains and losses recorded in earnings for the years ended December 31, 2019, 2018 and 2017 for Level 3 assets and liabilities that were still held at the end of each year: Changes in Unrealized Losses (Year Ended December 31, 2019) Changes in Unrealized Losses (Year Ended December 31, 2018) Changes in Unrealized Losses (Year Ended December 31, 2017) Level 3 Instruments Only Securities Available for Sale Securities Available for Sale Securities Available for Sale (In thousands) Changes in unrealized losses relating to assets still held at reporting date: Net impairment losses on available-for-sale investment securities (credit component) $ ( 497) $ ( 50) $ -
Impairment or Valuation Adjustments were Recorded for Assets Recognized at Fair Value [Table Text Block]	As of December 31, 2019, the Corporation recorded impairment or valuation adjustments for assets recognized at fair value on a non-recurring basis as shown in the following table: Carrying value as of December 31, 2019 Losses recorded for the Year Ended December 31, 2019 Level 1 Level 2 Level 3 (In thousands) Loans receivable (1) $ - $ - $ 217,252 $ ( 18,013) OREO (2) - - 101,626 ( 6,572) As of December 31, 2018, the Corporation recorded impairment or valuation adjustments for assets recognized at fair value on a non-recurring basis as shown in the following table: Carrying value as of December 31, 2018 Losses recorded for the Year Ended December 31, 2018 Level 1 Level 2 Level 3 (In thousands) Loans receivable (1) $ - $ - $ 365,726 $ ( 29,799) OREO (2) - - 131,402 ( 11,499) Loans Held For Sale (3) - - 16,111 ( 10,102) As of December 31, 2017, the Corporation recorded impairment or valuation adjustments for assets recognized at fair value on a nonrecurring basis as shown in the following table: Carrying value as of December 31, 2017 Losses recorded for the Year Ended December 31, 2017 Level 1 Level 2 Level 3 (In thousands) Loans receivable (1) $ - $ - $ 410,428 $ ( 39,493) OREO (2) - - 147,940 ( 8,511) Mortgage servicing rights (3) - - 25,255 ( 1,611)
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]	Qualitative information regarding the fair value measurements for Level 3 financial instruments as of December 31, 2019 are as follows: December 31, 2019 Method Inputs Loans Income, Market, Comparable Sales, Discounted Cash Flows External appraised values; probability weighting of broker price opinions; management assumptions regarding market trends or other relevant factors OREO Income, Market, Comparable Sales, Discounted Cash Flows External appraised values; probability weighting of broker price opinions; management assumptions regarding market trends or other relevant factors
Estimated Fair Value and Carrying Value of Financial Instruments [Table Text Block]	The following tables present the carrying value, estimated fair value and estimated fair value level of the hierarchy of financial instruments as of December 31, 2019 and 2018: Total Carrying Amount in Statement of Financial Condition as of December 31, 2019 Fair Value Estimate as of December 31, 2019 Level 1 Level 2 Level 3 (In thousands) Assets: Cash and due from banks and money market investments (amortized cost) $ 644,099 $ 644,099 $ 644,099 $ - $ - Investment securities available for sale (fair value) 2,123,525 2,123,525 7,479 2,101,456 14,590 Investment securities held to maturity (amortized cost) 138,675 110,374 - - 110,374 Equity securities (fair value) 38,249 38,249 1,428 36,821 - Loans held for sale (lower of cost or market) 39,477 40,234 - 40,234 - Loans, held for investment (amortized cost) 9,002,205 Less: allowance for loan and lease losses ( 155,139) Loans held for investment, net of allowance $ 8,847,066 8,715,144 - - 8,715,144 Derivatives, included in assets (fair value) 372 372 - 372 - Liabilities: Deposits (amortized cost) 9,348,429 9,372,591 - 9,372,591 - Securities sold under agreements to repurchase (amortized cost) 100,000 120,020 - 120,020 - Advances from FHLB (amortized cost) 570,000 578,498 - 578,498 - Other borrowings (amortized cost) 184,150 180,577 - - 180,577 Derivatives, included in liabilities (fair value) 149 149 - 149 - Total Carrying Amount in Statement of Financial Condition as of December 31, 2018 Fair Value Estimate as of December 31, 2018 Level 1 Level 2 Level 3 (In thousands) Assets: Cash and due from banks and money market investments (amortized cost) $ 586,203 $ 586,203 $ 586,203 $ - $ - Investment securities available for sale (fair value) 1,942,568 1,942,568 7,456 1,917,874 17,238 Investment securities held to maturity (amortized cost) 144,815 125,658 - - 125,658 Equity Securities (fair value) 44,530 44,530 418 44,112 - Loans held for sale (lower of cost or market) 43,186 43,831 - 27,720 16,111 Loans held for investment (amortized cost) 8,858,123 Less: allowance for loan and lease losses ( 196,362) Loans held for investment, net of allowance $ 8,661,761 8,213,144 - - 8,213,144 Derivatives, included in assets (fair value) 1,018 1,018 - 1,018 - Liabilities: Deposits (amortized cost) 8,994,714 9,005,679 - 9,005,679 - Securities sold under agreements to repurchase (amortized cost) 150,086 169,366 - 169,366 - Advances from FHLB (amortized cost) 740,000 730,253 - 730,253 - Other borrowings (amortized cost) 184,150 177,201 - - 177,201 Derivatives, included in liabilities (fair value) 1,000 1,000 - 1,000 -
Fair Value of Assets and Liabilities Measured on Recurring Basis [Table Text Block]	The table below presents a reconciliation of the beginning and ending balances of all assets and liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3) for the years ended December 31, 2019, 2018, and 2017: 2019 2018 2017 Level 3 Instruments Only Securities Available for Sale (1) Securities Available for Sale (1) Securities Available for Sale (1) (In thousands) Beginning balance $ 17,238 $ 19,855 $ 22,914 Total gain (losses) (realized/unrealized): Included in earnings ( 497) ( 50) - Included in other comprehensive income 714 222 2,777 Purchases - 500 - Principal repayments and amortization ( 2,865) ( 3,289) ( 5,836) Ending balance $ 14,590 $ 17,238 $ 19,855 ___________________ (1) Amounts mostly related to private label MBS.

REVENUE FROM CONTRACTS WITH C_2

REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)	12 Months Ended
	Dec. 31, 2019
Revenue from Contract with Customer [Abstract]
Disaggregation of Revenue [Table Text Block]	(In thousands) Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Treasury and Investments United States Operations Virgin Islands Operations Total Year ended December 31, 2019: Net interest income (1) $ 68,803 $ 244,535 $ 91,266 $ 73,626 $ 62,539 $ 26,312 $ 567,081 Service charges and fees on deposit accounts - 14,534 5,811 - 631 2,940 23,916 Insurance commissions - 9,621 - - 67 498 10,186 Merchant-related income - 4,120 466 - - 1,049 5,635 Credit and debit card fees - 19,014 104 - 43 1,744 20,905 Other service charges and fees 216 3,012 2,690 - 1,558 1,313 8,789 Not in scope of ASC Topic 606 (1) 16,609 1,428 2,643 ( 225) 508 178 21,141 Total non-interest income 16,825 51,729 11,714 ( 225) 2,807 7,722 90,572 Total Revenue $ 85,628 $ 296,264 $ 102,980 $ 73,401 $ 65,346 $ 34,034 $ 657,653 (In thousands) Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Treasury and Investments United States Operations Virgin Islands Operations Total Year ended December 31, 2018: Net interest income (1) $ 79,389 $ 217,933 $ 78,675 $ 61,628 $ 59,056 $ 28,702 $ 525,383 Service charges and fees on deposit accounts - 13,332 4,965 - 559 2,812 21,668 Insurance commissions - 7,889 - - 87 455 8,431 Merchant-related income - 3,561 748 - - 934 5,243 Credit and debit card fees - 17,538 1,225 - 618 2,061 21,442 Other service charges and fees 252 4,391 1,280 71 1,351 525 7,870 Not in scope of Topic 606 (1) 16,821 995 ( 3,060) 2,434 405 61 17,656 Total non-interest income 17,073 47,706 5,158 2,505 3,020 6,848 82,310 Total Revenue $ 96,462 $ 265,639 $ 83,833 $ 64,133 $ 62,076 $ 35,550 $ 607,693
Activity of Contract Liabilities [Table Text Block]	(In thousands) 2019 2018 Beginning Balance $ 2,071 $ 2,396 Plus: Additions 730 - Less: Amortizations ( 325) ( 325) Ending balance $ 2,476 $ 2,071

SUPPLEMENTAL CASH FLOW INFORM_2

SUPPLEMENTAL CASH FLOW INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2019
Supplemental Cash Flow Elements [Abstract]
Supplemental Cash Flow Information [Table Text Block]	Supplemental statement of cash flows information is as follows for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Cash paid for: Interest on borrowings $ 107,010 $ 98,194 $ 93,634 Income tax 13,495 7,175 4,037 Operating cash flow from operating leases 10,219 - - Non-cash investing and financing activities: Additions to OREO 40,398 48,767 47,711 Additions to auto and other repossessed assets 47,643 52,023 40,987 Capitalization of servicing assets 4,039 3,864 3,318 Loan securitizations 235,258 233,175 235,074 Loans held for investment transferred to held for sale 24,470 90,319 - Loans held for sale transferred to held for investment - 2,179 10,234 Property plant and equipment transferred to other assets - - 1,185 ROU asset obtained in exchange for operating lease liabilities 10,762 - - Adoption of lease accounting standard: ROU assets operating leases 57,178 - - Operating lease liabilities 59,818 - -

REGULATORY MATTERS, COMMITMEN_2

REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Corporations and its banking subsidiarys regulatory capital positions [Table Text Block]	The regulatory capital positions of the Corporation and FirstBank as of December 31, 2019 and 2018 were as follows: Regulatory Requirements Actual For Capital Adequacy Purposes To be Well-Capitalized Thresholds Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) As of December 31, 2019 Total Capital (to Risk-Weighted Assets) First BanCorp. $ 2,286,337 25.22% $ 725,236 8.0% N/A N/A FirstBank $ 2,242,262 24.74% $ 725,047 8.0% $ 906,309 10.0% Common Equity Tier 1 Capital (to Risk-Weighted Assets) First BanCorp. $ 1,957,887 21.60% $ 407,946 4.5% N/A N/A FirstBank $ 1,820,571 20.09% $ 407,839 4.5% $ 589,101 6.5% Tier I Capital (to Risk-Weighted Assets) First BanCorp. $ 1,993,991 22.00% $ 543,927 6.0% N/A N/A FirstBank $ 2,128,571 23.49% $ 543,785 6.0% $ 725,047 8.0% Leverage ratio First BanCorp. $ 1,993,991 16.15% $ 493,786 4.0% N/A N/A FirstBank $ 2,128,571 17.26% $ 493,242 4.0% $ 616,552 5.0% As of December 31, 2018 Total Capital (to Risk-Weighted Assets) First BanCorp. $ 2,118,940 24.00% $ 706,418 8.0% N/A N/A FirstBank $ 2,075,894 23.51% $ 706,426 8.0% $ 883,032 10.0% Common Equity Tier 1 Capital (to Risk-Weighted Assets) First BanCorp. $ 1,792,880 20.30% $ 397,360 4.5% N/A N/A FirstBank $ 1,656,563 18.76% $ 397,365 4.5% $ 573,971 6.5% Tier I Capital (to Risk-Weighted Assets) First BanCorp. $ 1,828,984 20.71% $ 529,814 6.0% N/A N/A FirstBank $ 1,964,563 22.25% $ 529,819 6.0% $ 706,426 8.0% Leverage ratio First BanCorp. $ 1,828,984 15.37% $ 475,924 4.0% N/A N/A FirstBank $ 1,964,563 16.53% $ 475,490 4.0% $ 594,362 5.0%
Schedule of detail of commitments to extend credit, standby letters of credit and commitments to sell loans [Table Text Block]	The following table summarizes commitments to extend credit and standby letters of credit as of the indicated dates: December 31, 2019 2018 (In thousands) Financial instruments whose contract amounts represent credit risk: Commitments to extend credit: Construction undisbursed funds $ 185,569 $ 160,905 Unused personal lines of credit 722,761 722,510 Commercial lines of credit 533,230 455,344 Commercial letters of credit 82,281 69,664 Standby letters of credit 4,452 2,865

DERIVATIVE INSTRUMENTS AND HE_2

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)	12 Months Ended
	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Notional Amounts of All Derivative Instruments [Table Text Block]	The following table summarizes the notional amounts of all derivative instruments as of the indicated dates: Notional Amounts (1) As of December 31, 2019 2018 (In thousands) Undesignated economic hedges: Interest rate contracts: Written interest rate cap agreements $ 21,010 $ 68,510 Purchased interest rate cap agreements 21,010 68,510 Interest rate lock commitments 11,456 11,722 Forward Contracts: Sale of TBA GNMA MBS pools 35,000 33,000 Forward loan sales commitments 6,418 6,339 $ 94,894 $ 188,081 (1) Notional amounts are presented on a gross basis with no netting of offsetting exposure positions.
Summary of Fair Value of Derivative Instruments and Location in Statement of Financial Condition [Table Text Block]	The following table summarizes for derivative instruments their fair values and location in the consolidated statements of financial condition as of the indicated dates: Asset Derivatives Liability Derivatives Statements of December 31, December 31, December 31, December 31, Financial Condition 2019 2018 Statements of 2019 2018 Location Fair Value Fair Value Financial Condition Location Fair Value Fair Value (In thousands) Undesignated economic hedges: Interest rate contracts: Written interest rate cap agreements Other assets $ - $ - Accounts payable and other liabilities $ 11 $ 617 Purchased interest rate cap agreements Other assets 11 623 Accounts payable and other liabilities - - Interest rate lock commitments Other assets 341 383 - - Forward Contracts: Sales of TBA GNMA MBS pools Other assets - - Accounts payable and other liabilities 138 383 Forward loan sales commitments Other assets 20 12 - - $ 372 $ 1,018 $ 149 $ 1,000
Effect of Derivative Instruments on Statement of Income (Loss) [Table Text Block]	The following table summarizes the effect of derivative instruments on the consolidated statements of income for the indicated periods: Gain (or Loss) Location of Unrealized Gain (loss) Year ended on Derivative Recognized in December 31, Statements of Income 2019 2018 2017 (In thousands) Undesignated economic hedges: Interest rate contracts: Written and purchased interest rate cap agreements Interest income - Loans $ ( 6) $ 22 $ ( 2) Interest rate lock commitments Mortgage Banking Activities 224 383 - Forward contracts: Sales of TBA GNMA MBS pools Mortgage Banking Activities 245 ( 371) 189 Forward loan sales commitments Mortgage Banking Activities 8 12 - Total gain on derivatives $ 471 $ 46 $ 187

OFFSETTING OF ASSETS AND LIAB_2

OFFSETTING OF ASSETS AND LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2019
Offsetting [Abstract]
Offsetting Assets [Table Text Block]	Offsetting of Financial Assets and Derivative Assets As of December 31, 2019 Net Amounts of Assets Presented in the Statement of Financial Condition Gross Amounts of Recognized Assets Gross Amounts Offset in the Statement of Financial Condition Gross Amounts Not Offset in the Statement of Financial Condition Financial Instruments Cash Collateral Net Amount (In thousands) Description Derivatives $ 11 $ - $ 11 $ - $ ( 11) $ - Securities purchased under agreement to resell 200,000 ( 200,000) - - - - Total $ 200,011 $ ( 200,000) $ 11 $ - $ ( 11) $ - As of December 31, 2018 Net Amounts of Assets Presented in the Statement of Financial Condition Gross Amounts of Recognized Assets Gross Amounts Offset in the Statement of Financial Condition Gross Amounts Not Offset in the Statement of Financial Condition Financial Instruments Cash Collateral Net Amount (In thousands) Description Derivatives $ 623 $ - $ 623 $ - $ ( 623) $ - Securities purchased under agreement to resell 200,000 ( 200,000) - - - - Total $ 200,623 $ ( 200,000) $ 623 $ - $ ( 623) $ -
Offsetting Liabilities [Table Text Block]	Offsetting of Financial Liabilities and Derivative Liabilities As of December 31, 2019 Gross Amounts Not Offset in the Statement of Financial Condition Net Amounts of Liabilities Presented in the Statement of Financial Condition Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statement of Financial Condition Financial Instruments Cash Collateral Net Amount (In thousands) Description Securities purchased under agreement to repurchase $ 300,000 $ ( 200,000) $ 100,000 $ ( 100,000) $ - $ - As of December 31, 2018 Gross Amounts Not Offset in the Statement of Financial Condition Net Amounts of Liabilities Presented in the Statement of Financial Condition Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statement of Financial Condition Financial Instruments Cash Collateral As of December 31, 2018 Net Amount (In thousands) Description Securities purchased under agreement to repurchase $ 350,086 $ ( 200,000) $ 150,086 $ ( 150,086) $ - $ -

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2019
Segment Reporting [Abstract]
Schedule Of Segment Reporting Information By Segment [Text Block]	The following tables present information about the reportable segments for the indicated periods: Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Banking Treasury and Investments United States Operations Virgin Islands Operations Total (In thousands) For the year ended December 31, 2019: Interest income $ 120,981 $ 216,066 $ 148,224 $ 63,175 $ 97,406 $ 30,045 $ 675,897 Net (charge) credit for transfer of funds ( 52,178) 66,675 ( 56,958) 47,477 ( 5,016) - - Interest expense - ( 38,206) - ( 37,026) ( 29,851) ( 3,733) ( 108,816) Net interest income 68,803 244,535 91,266 73,626 62,539 26,312 567,081 (Provision) release for loan and lease losses ( 13,499) ( 41,043) 17,565 - ( 7,296) 4,048 ( 40,225) Non-interest income (loss) 16,825 51,729 11,714 ( 225) 2,807 7,722 90,572 Direct non-interest expenses ( 34,825) ( 116,854) ( 34,718) ( 2,729) ( 34,070) ( 28,995) ( 252,191) Segment income $ 37,304 $ 138,367 $ 85,827 $ 70,672 $ 23,980 $ 9,087 $ 365,237 Average earnings assets $ 2,161,772 $ 1,960,352 $ 2,489,933 $ 2,487,084 $ 1,931,015 $ 467,252 $ 11,497,408 Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Banking Treasury and Investments United States Operations Virgin Islands Operations Total (In thousands) For the year ended December 31, 2018: Interest income $ 127,042 $ 181,166 $ 138,706 $ 61,913 $ 83,971 $ 32,169 $ 624,967 Net (charge) credit for transfer of funds ( 47,653) 65,092 ( 60,031) 44,540 ( 1,948) - - Interest expense - ( 28,325) - ( 44,825) ( 22,967) ( 3,467) ( 99,584) Net interest income 79,389 217,933 78,675 61,628 59,056 28,702 525,383 Provision for loan and lease losses ( 13,083) ( 23,516) ( 4,804) - ( 11,882) ( 5,968) ( 59,253) Non-interest income 17,073 47,706 5,158 2,505 3,020 6,848 82,310 Direct non-interest expenses ( 38,213) ( 112,176) ( 32,371) ( 2,966) ( 33,566) ( 30,963) ( 250,255) Segment income (loss) $ 45,166 $ 129,947 $ 46,658 $ 61,167 $ 16,628 $ ( 1,381) $ 298,185 Average earnings assets $ 2,258,974 $ 1,636,002 $ 2,530,635 $ 2,552,130 $ 1,750,155 $ 537,574 $ 11,265,470 Mortgage Banking Consumer (Retail) Banking Commercial and Corporate Banking Treasury and Investments United States Operations Virgin Islands Operations Total (In thousands) For the year ended December 31, 2017: Interest income $ 131,718 $ 173,690 $ 128,871 $ 48,071 $ 69,760 $ 36,313 $ 588,423 Net (charge) credit for transfer of funds ( 45,759) 27,475 ( 36,904) 56,865 ( 1,677) - - Interest expense - ( 25,240) - ( 49,577) ( 18,902) ( 3,153) ( 96,872) Net interest income 85,959 175,925 91,967 55,359 49,181 33,160 491,551 Provision for loan and lease losses ( 47,713) ( 53,778) ( 33,296) - ( 3,644) ( 5,823) ( 144,254) Non-interest income (loss) 12,825 43,924 7,176 ( 10,206) 2,664 6,004 62,387 Direct non-interest expenses ( 36,403) ( 108,165) ( 35,142) ( 3,376) ( 32,197) ( 26,994) ( 242,277) Segment income $ 14,668 $ 57,906 $ 30,705 $ 41,777 $ 16,004 $ 6,347 $ 167,407 Average earnings assets $ 2,451,655 $ 1,749,148 $ 2,489,948 $ 2,215,551 $ 1,525,191 $ 603,835 $ 11,035,328
Reconciliation of the Reportable Segment Financial Information [Table Text Block]	The following table presents a reconciliation of the reportable segment financial information to the consolidated totals for the indicated periods: Year Ended December 31, 2019 2018 2017 (In thousands) Net income: Total income for segments and other $ 365,237 $ 298,185 $ 167,407 Other operating expenses (1) ( 125,865) ( 107,547) ( 105,424) Income before income taxes 239,372 190,638 61,983 Income tax expense (benefit) 71,995 ( 10,970) ( 4,973) Total consolidated net income $ 167,377 $ 201,608 $ 66,956 Average assets: Total average earning assets for segments $ 11,497,408 $ 11,265,470 $ 11,035,328 Average non-earning assets 954,726 940,731 937,950 Total consolidated average assets $ 12,452,134 $ 12,206,201 $ 11,973,278
Schedule of revenues and selected balance sheet data by geography [Table Text Block]	The following table presents revenues (interest income plus non-interest income) and selected balance sheet data by geography based on the location in which the transaction is originated as of indicated dates: 2019 2018 2017 (In thousands) Revenues: Puerto Rico $ 628,489 $ 581,269 $ 536,069 United States 100,213 86,991 72,424 Virgin Islands 37,767 39,017 42,317 Total consolidated revenues $ 766,469 $ 707,277 $ 650,810 Selected Balance Sheet Information: Total assets: Puerto Rico $ 10,059,890 $ 9,797,267 $ 9,871,272 United States 2,048,260 1,940,633 1,780,654 Virgin Islands 503,116 505,661 609,342 Loans: Puerto Rico $ 6,695,953 $ 6,586,033 $ 6,633,432 United States 1,879,346 1,834,088 1,665,448 Virgin Islands 466,383 481,188 584,576 Deposits: Puerto Rico (1) $ 6,422,864 $ 6,208,531 $ 6,268,056 United States (2) 1,661,657 1,519,362 1,637,941 Virgin Islands 1,263,908 1,266,821 1,116,634

FIRST BANCORP. (Holding Compa_2

FIRST BANCORP. (Holding Company Only) Financial Information (Tables)	12 Months Ended
	Dec. 31, 2019
Condensed Financial Information of Parent Company Only Disclosure [Abstract]
Statements of Financial Condition [Table Text Block]	Statements of Financial Condition As of December 31, 2019 2018 (In thousands) Assets Cash and due from banks $ 16,895 $ 10,984 Money market investments 6,211 6,111 Other investment securities 285 285 Investment in First Bank Puerto Rico, at equity 2,362,182 2,179,655 Investment in First Bank Insurance Agency, at equity 24,995 17,780 Investment in FBP Statutory Trust I 1,963 1,963 Investment in FBP Statutory Trust II 3,561 3,561 Other assets 509 12,219 Total assets $ 2,416,601 $ 2,232,558 Liabilities and Stockholders' Equity Liabilities: Other borrowings $ 184,150 $ 184,150 Accounts payable and other liabilities 4,378 3,704 Total liabilities 188,528 187,854 Stockholders' equity 2,228,073 2,044,704 Total liabilities and stockholders' equity $ 2,416,601 $ 2,232,558
Statements of Income [Table Text Block]	Statements of Income Year Ended December 31, 2019 2018 2017 (In thousands) Income Interest income on money market investments $ 233 $ 20 $ 20 Interest income on loans - 105 - Dividend income from banking subsidiaries 42,243 37,784 7,200 Dividend income from non-banking subsidiaries - - 3,000 Other income 283 275 262 42,759 38,184 10,482 Expense Other borrowings 9,424 8,983 8,284 Other operating expenses 2,131 2,489 3,175 11,555 11,472 11,459 Gain on early extinguishment of debt - 2,316 1,391 Income before income taxes and equity in undistributed earnings of subsidiaries 31,204 29,028 414 Income tax provision 2,752 - 45 Equity in undistributed earnings of subsidiaries 138,925 172,580 66,587 Net income $ 167,377 $ 201,608 $ 66,956 Other comprehensive income (loss), net of tax 47,179 ( 19,806) 13,775 Comprehensive income $ 214,556 $ 181,802 $ 80,731
Statements of Cash Flow of holding company [Table Text Block]	Statements of Cash Flows Year Ended December 31, 2019 2018 2017 (In thousands) Cash flows from operating activities: Net income $ 167,377 $ 201,608 $ 66,956 Adjustments to reconcile net income to net cash provided by operating activities: Stock-based compensation 314 2,202 3,769 Equity in undistributed earnings of subsidiaries ( 138,925) ( 172,580) ( 66,587) Gain on early extinguishment of debt - ( 2,316) ( 1,391) Accretion of discount on loans - ( 4) ( 14) Net decrease (increase) in other assets 11,710 ( 8,417) ( 8) Net increase (decrease) in other liabilities 526 2,890 ( 201) Net cash provided by operating activities 41,002 23,383 2,524 Cash flows from investing activities: Principal collected on loans - 191 50 Net cash provided by investing activities - 191 50 Cash flows from financing activities: Repurchase of common stock ( 1,959) ( 2,827) ( 2,497) Repayment of junior subordinated debentures - ( 21,434) ( 5,930) Dividends paid on common stock ( 30,356) ( 6,517) - Dividends paid on preferred stock ( 2,676) ( 2,676) ( 2,676) Net cash used in financing activities ( 34,991) ( 33,454) ( 11,103) Net increase (decrease) in cash and cash equivalents 6,011 ( 9,880) ( 8,529) Cash and cash equivalents at beginning of the year 17,095 26,975 35,504 Cash and cash equivalents at end of year $ 23,106 $ 17,095 $ 26,975 Cash and cash equivalents include: Cash and due from banks $ 16,895 $ 10,984 $ 20,864 Money market instruments 6,211 6,111 6,111 $ 23,106 $ 17,095 $ 26,975

NATURE OF BUSINESS AND SUMMAR_2

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Nature of business (Detail)	Dec. 31, 2019subsidiariesofficesnumberofbranches
FirstBank [Member] | PUERTO RICO
Nature Of Business [Line Items]
Wholly owned subsidiaries | subsidiaries	5
Banking branches	46
FirstBank [Member] | U S [Member]
Nature Of Business [Line Items]
Banking branches	10
FirstBank [Member] | USVI and BVI [Member]
Nature Of Business [Line Items]
Banking branches	11
First Federal Finance Corp [Member] | PUERTO RICO
Nature Of Business [Line Items]
Offices | offices	28

NATURE OF BUSINESS AND SUMMAR_3

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Loans held for investment (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Threshold Period Past Due Of Financing Receivables To Be Considered Nonperforming	90 days
Troubled Debt Restructurings Sustained Performance Period	6 months
Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Threshold Period Past Due, Writeoff	180 days
Threshold Period Past Due Of Financing Receivables To Be Considered Delinquent	2 years
Loan value deliquency threshold to be valued at fair value, percent	60.00%
Residential Portfolio Segment [Member] | Puerto Rico Housing Finance Authority [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Period Of Guaranteed Residential Mortgage Loans That Are No Longer Accruing Interest	90 days
Residential Portfolio Segment [Member] | FHA/VA government-guaranteed loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Past due 90 days and still accruing	90 days
Period Of Guaranteed Residential Mortgage Loans That Are No Longer Accruing Interest	15 months
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Individually Evaluated for Impairment	$ 1
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Threshold Period Past Due Of Financing Receivables To Be Considered Delinquent	2 years
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Threshold Period Past Due Of Financing Receivables To Be Considered Delinquent	30 years
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Threshold Period Past Due Of Financing Receivables To Be Considered Delinquent	2 years
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Threshold Period Past Due Of Financing Receivables To Be Considered Delinquent	30 years
Consumer Portfolio Segment [Member] | Auto loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Threshold Period Past Due, Writeoff	120 days
Consumer Portfolio Segment [Member] | Personal Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Threshold Period Past Due, Writeoff	180 days
Consumer Portfolio Segment [Member] | Small Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Threshold Period Past Due, Writeoff	180 days
Consumer Portfolio Segment [Member] | Finance Leases [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Threshold Period Past Due, Writeoff	120 days
Consumer Portfolio Segment [Member] | Credit Card [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Threshold Period Past Due, Writeoff	180 days	180 days
Consumer Portfolio Segment [Member] | Boat Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Threshold Period Past Due, Writeoff	120 days
Financing Receivable, Individually Evaluated for Impairment	$ 1

NATURE OF BUSINESS AND SUMMAR_4

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Allowance for loan and lease losses (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019
Hurricane [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Commercial And Construction Large Relationships Percent	80.00%
Consumer Portfolio Segment [Member] | Boat Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment		$ 1
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment		1
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment		1
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable, Individually Evaluated for Impairment		$ 1

NATURE OF BUSINESS AND SUMMAR_5

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Servicing Assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounting Policies [Abstract]
Servicing Asset at Amortized Cost	$ 26,762	$ 27,428	$ 25,255	$ 26,244

NATURE OF BUSINESS AND SUMMAR_6

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Goodwill and other intangible assets (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Feb. 15, 2016	Jun. 30, 2012
Customer Relationships [Member] | Credit Card [Member]
Finite Lived Intangible Assets [Line Items]
Gross amount	$ 24,465	$ 24,465
Net carrying amount	3,615	5,702
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				$ 24,500
Customer Relationships [Member] | Credit Card [Member] | Doral Bank Transaction Member [Member]
Finite Lived Intangible Assets [Line Items]
Net carrying amount	3,500	4,300
Customer Relationships [Member] | Insurance Customer Intangible [Member]
Finite Lived Intangible Assets [Line Items]
Gross amount	1,067	1,067
Net carrying amount	470	622
Customer Relationships [Member] | Insurance Customer Intangible [Member] | Doral Bank Transaction Member [Member]
Finite Lived Intangible Assets [Line Items]
Net carrying amount	500	600
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles			$ 1,100
Core Deposits [Member]
Finite Lived Intangible Assets [Line Items]
Gross amount	51,664	51,664
Net carrying amount	$ 3,488	$ 4,335

NATURE OF BUSINESS AND SUMMAR_7

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Securities purchased and sold under agreements to repurchase (Detail)	12 Months Ended
	Dec. 31, 2019
Accounting Policies [Abstract]
Modified Repurchase Agreements Threshold	10.00%

NATURE OF BUSINESS AND SUMMAR_8

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Rewards Liability (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Revenue Recognition and Deferred Revenue [Abstract]
Reward liability	$ 7.1	$ 7

NATURE OF BUSINESS AND SUMMAR_9

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accounting Updates (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Jan. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use right	$ 61,327
Right-of-use liabilities operating leases	64,259
Loans and Leases Receivable, Gross	9,002,205		$ 8,858,123	$ 8,850,476
PCI loans [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans and Leases Receivable, Gross	136,700		146,640	158,174
Residential Portfolio Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans and Leases Receivable, Gross	2,933,773		3,163,208	3,290,957
Residential Portfolio Segment [Member] | PCI loans [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans and Leases Receivable, Gross	133,744		143,176	153,991
Commercial Portfolio Segment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans and Leases Receivable, Gross	3,786,779		3,750,202
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans and Leases Receivable, Gross	1,444,586		1,522,662	1,614,972
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | PCI loans [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans and Leases Receivable, Gross	2,956		3,464	4,183
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use right	57,178	$ 59,600	0	0
Right-of-use liabilities operating leases	$ 59,818	62,100	0	0
Accounting Standards Update 2016-13 [Member] | Subsequent Event [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Percentage increase in ACL	60.00%
Percentage decrease in retained earnings	3.00%
Accounting Standards Update 2016-13 [Member] | Residential Portfolio Segment [Member] | PCI loans [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans and Leases Receivable, Gross		133,700
Accounting Standards Update 2016-13 [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | PCI loans [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans and Leases Receivable, Gross		$ 3,000
Puerto Rico And Virgin Islands [Member] | Accounting Standards Update 2016-13 [Member] | Minimum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reversion Period	P2Y
Puerto Rico And Virgin Islands [Member] | Accounting Standards Update 2016-13 [Member] | Maximum [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reversion Period	P3Y
Florida [Member}
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loans and Leases Receivable, Gross	$ 1,879,346		$ 1,834,088	$ 1,665,448
Florida [Member} | Accounting Standards Update 2016-13 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reversion Period	P5Y

NATURE OF BUSINESS AND SUMMA_10

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Segment Reporting (Detail)	12 Months Ended
	Dec. 31, 2019numberofreportableunits
Segment Reporting [Abstract]
Number Of Reportable Segments	6

NATURE OF BUSINESS AND SUMMA_11

NATURE OF BUSINESS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Leases (Detail) - USD ($)	Feb. 14, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Finance Lease, Liability	$ 0	$ 0
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract		2 years
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Term of Contract		30 years
Option to extend		7 years

POTENTIAL ACQUISITION OF BANC_2

POTENTIAL ACQUISITION OF BANCO SANTANDER PUERTO RICO - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Business Acquisition [Line Items]
Merger and restructuring costs	$ 11,442	$ 0	$ 0
Acquisition And Merger [Member]
Business Acquisition [Line Items]
Business Acquisition Purchase Price To Tangible Common Equity	117.50%
Acquisition Premium	$ 65,000
Excess Capital Percentage Business Acquisition Purchase Price	100.00%
Merger and restructuring costs	$ 11,400

UPDATE ON EFFECTS OF NATURAL _2

UPDATE ON EFFECTS OF NATURAL DISASTERS- Additional information (Detail) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Liability For Catastrophe Claims [Line Items]
Gain from insurance proceeds			$ 660	$ 537	$ 0
Hurricane [Member]
Liability For Catastrophe Claims [Line Items]
Net Loan Loss Reserve Release		$ 6,400
Insurance Settlements Receivable			600	$ 3,400
Gain from insurance proceeds	$ 600
Employee Retention Benefit Credit		$ 2,300
Insurance proceeds			$ 4,100

RESTRICTIONS ON CASH AND DUE _2

RESTRICTIONS ON CASH AND DUE FROM BANKS (Narratives) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Minimum [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Average Weekly Demand Deposit Reserve	$ 422,100,000	$ 420,900,000
Time Deposits [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Restricted Cash and Cash Equivalents	$ 300,000

MONEY MARKET INVESTMENTS (Detai

MONEY MARKET INVESTMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash and Cash Equivalents [Line Items]
Time deposits with other financial institutions	$ 300	$ 300
Other short-term investments	97,408	7,290
Money Market Funds At Carrying Value	$ 97,708	$ 7,590	$ 10,415
Weighted average interest rate, time deposits with other financial institutions	1.00%	1.00%
Other short-term investments [Member]
Cash and Cash Equivalents [Line Items]
Other short-term investments	$ 1,180	$ 1,179
Weighted average rate, other short-term investments	0.11%	0.11%
Overnight deposits with other financial institutions [Member]
Cash and Cash Equivalents [Line Items]
Other short-term investments	$ 96,228	$ 6,111
Weighted average rate, other short-term investments	1.63%	0.32%

MONEY MARKET INVESTMENTS - Addi

MONEY MARKET INVESTMENTS - Additional Information (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash and Cash Equivalents [Line Items]
Money market instruments	$ 97,708,000	$ 7,590,000	$ 10,415,000
Asset Pledged as Collateral [Member]
Cash and Cash Equivalents [Line Items]
Money market instruments	$ 0	$ 0

INVESTMENT SECURITIES - Investm

INVESTMENT SECURITIES - Investment Securities Available for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	$ 2,109,008	$ 1,975,230
Noncredit Loss Component of OTTI Recorded in OCI	4,881	5,426
Gross unrealized gain	24,573	7,260
Gross unrealized loss	5,175	34,496
Fair value	$ 2,123,525	$ 1,942,568
Weighted-average yield	2.52%	2.55%
U.S. Treasury securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost Due within one year		$ 7,489
Noncredit Loss Component of OTTI Recorded in OCI Due within one year		0
Gross Unrealized gains Due within one year		0
Gross Unrealized losses Due within one year		33
Fair value Due within one year		$ 7,456
Weighted-average yield Due within one year		1.29%
Amortized cost After 1 to 5 years	$ 7,478
Noncredit Loss Component of OTTI Recorded in OCI After 1 to 5 years	0
Gross Unrealized gains After 1 to 5 years	1
Gross Unrealized losses After 1 to 5 years	0
Fair value After 1 to 5 years	$ 7,479
Weighted-average yield After 1 to 5 years	1.65%
U.S. government-sponsored agencies obigations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost Due within one year	$ 93,299	$ 191,531
Noncredit Loss Component of OTTI Recorded in OCI Due within one year	0	0
Gross Unrealized gains Due within one year	103	0
Gross Unrealized losses Due within one year	106	1,908
Fair value Due within one year	$ 93,296	$ 189,623
Weighted-average yield Due within one year	1.67%	1.28%
Amortized cost After 1 to 5 years	$ 142,513	$ 184,851
Noncredit Loss Component of OTTI Recorded in OCI After 1 to 5 years	0	0
Gross Unrealized gains After 1 to 5 years	676	203
Gross Unrealized losses After 1 to 5 years	52	2,249
Fair value After 1 to 5 years	$ 143,137	$ 182,805
Weighted-average yield After 1 to 5 years	2.12%	2.07%
Amortized cost After 5 to 10 years	$ 63,764	$ 195,750
Noncredit Loss Component of OTTI Recorded in OCI After 5 to 10 years	0	0
Gross Unrealized gains After 5 to 10 years	165	286
Gross Unrealized losses After 5 to 10 years	150	1,674
Fair value After 5 to 10 years	$ 63,779	$ 194,362
Weighted-average yield After 5 to 10 years	2.33%	2.95%
Amortized cost After 10 years	$ 24,624	$ 34,627
Noncredit Loss Component of OTTI Recorded in OCI After 10 years	0	0
Gross Unrealized gains After 10 years	0	0
Gross Unrealized losses After 10 years	116	217
Fair value After 10 years	$ 24,508	$ 34,410
Weighted-average yield After 10 years	2.00%	2.68%
Puerto Rico government obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost After 5 to 10 years	$ 4,000	$ 4,000
Noncredit Loss Component of OTTI Recorded in OCI After 5 to 10 years	0	0
Gross Unrealized gains After 5 to 10 years	348	128
Gross Unrealized losses After 5 to 10 years	0	0
Fair value After 5 to 10 years	$ 4,348	$ 4,128
Weighted-average yield After 5 to 10 years	5.12%	5.12%
Amortized cost After 10 years	$ 4,166	$ 4,185
Noncredit Loss Component of OTTI Recorded in OCI After 10 years	0	0
Gross Unrealized gains After 10 years	0	0
Gross Unrealized losses After 10 years	1,192	1,361
Fair value After 10 years	$ 2,974	$ 2,824
Weighted-average yield After 10 years	6.97%	6.97%
United States And Puerto Rico Government Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	$ 339,844	$ 622,433
Noncredit Loss Component of OTTI Recorded in OCI	0	0
Gross unrealized gain	1,293	617
Gross unrealized loss	1,616	7,442
Fair value	$ 339,521	$ 615,608
Weighted-average yield	2.11%	2.18%
MBS [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost	$ 1,768,664	$ 1,352,297
Noncredit Loss Component of OTTI Recorded in OCI	4,881	5,426
Gross unrealized gain	23,280	6,643
Gross unrealized loss	3,559	27,054
Fair value	$ 1,783,504	$ 1,326,460
Weighted-average yield	2.60%	2.71%
MBS [Member] | FHLMC [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost After 5 to 10 years	$ 81,418	$ 92,149
Noncredit Loss Component of OTTI Recorded in OCI After 5 to 10 years	0	0
Gross Unrealized gains After 5 to 10 years	589	31
Gross Unrealized losses After 5 to 10 years	228	1,850
Fair value After 5 to 10 years	$ 81,779	$ 90,330
Weighted-average yield After 5 to 10 years	2.16%	2.09%
Amortized cost After 10 years	$ 424,316	$ 265,624
Noncredit Loss Component of OTTI Recorded in OCI After 10 years	0	0
Gross Unrealized gains After 10 years	3,873	523
Gross Unrealized losses After 10 years	758	6,699
Fair value After 10 years	$ 427,431	$ 259,448
Weighted-average yield After 10 years	2.50%	2.52%
Amortized cost	$ 505,734	$ 357,773
Noncredit Loss Component of OTTI Recorded in OCI	0	0
Gross unrealized gain	4,462	554
Gross unrealized loss	986	8,549
Fair value	$ 509,210	$ 349,778
Weighted-average yield	2.44%	2.41%
MBS [Member] | GNMA [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost After 1 to 5 years	$ 4,357	$ 176
Noncredit Loss Component of OTTI Recorded in OCI After 1 to 5 years	0	0
Gross Unrealized gains After 1 to 5 years	45	3
Gross Unrealized losses After 1 to 5 years	0	0
Fair value After 1 to 5 years	$ 4,402	$ 179
Weighted-average yield After 1 to 5 years	3.26%	3.43%
Amortized cost After 5 to 10 years	$ 42,303	$ 61,604
Noncredit Loss Component of OTTI Recorded in OCI After 5 to 10 years	0	0
Gross Unrealized gains After 5 to 10 years	607	408
Gross Unrealized losses After 5 to 10 years	0	503
Fair value After 5 to 10 years	$ 42,910	$ 61,509
Weighted-average yield After 5 to 10 years	2.77%	2.88%
Amortized cost After 10 years	$ 258,944	$ 118,898
Noncredit Loss Component of OTTI Recorded in OCI After 10 years	0	0
Gross Unrealized gains After 10 years	7,126	2,938
Gross Unrealized losses After 10 years	500	747
Fair value After 10 years	$ 265,570	$ 121,089
Weighted-average yield After 10 years	3.03%	3.92%
Amortized cost	$ 305,604	$ 180,678
Noncredit Loss Component of OTTI Recorded in OCI	0	0
Gross unrealized gain	7,778	3,349
Gross unrealized loss	500	1,250
Fair value	$ 312,882	$ 182,777
Weighted-average yield	3.00%	3.56%
MBS [Member] | FNMA [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost Due within one year		$ 119
Noncredit Loss Component of OTTI Recorded in OCI Due within one year		0
Gross Unrealized gains Due within one year		2
Gross Unrealized losses Due within one year		0
Fair value Due within one year		$ 121
Weighted-average yield Due within one year		2.20%
Amortized cost After 1 to 5 years	$ 19,779	$ 19,798
Noncredit Loss Component of OTTI Recorded in OCI After 1 to 5 years	0	0
Gross Unrealized gains After 1 to 5 years	415	50
Gross Unrealized losses After 1 to 5 years	3	122
Fair value After 1 to 5 years	$ 20,191	$ 19,726
Weighted-average yield After 1 to 5 years	2.79%	2.79%
Amortized cost After 5 to 10 years	$ 140,599	$ 165,067
Noncredit Loss Component of OTTI Recorded in OCI After 5 to 10 years	0	0
Gross Unrealized gains After 5 to 10 years	1,257	2
Gross Unrealized losses After 5 to 10 years	641	3,822
Fair value After 5 to 10 years	$ 141,215	$ 161,247
Weighted-average yield After 5 to 10 years	2.14%	2.13%
Amortized cost After 10 years	$ 700,213	$ 543,972
Noncredit Loss Component of OTTI Recorded in OCI After 10 years	0	0
Gross Unrealized gains After 10 years	9,006	2,211
Gross Unrealized losses After 10 years	1,208	13,233
Fair value After 10 years	$ 708,011	$ 532,950
Weighted-average yield After 10 years	2.58%	2.67%
Amortized cost	$ 860,591	$ 728,956
Noncredit Loss Component of OTTI Recorded in OCI	0	0
Gross unrealized gain	10,678	2,265
Gross unrealized loss	1,852	17,177
Fair value	$ 869,417	$ 714,044
Weighted-average yield	2.51%	2.55%
MBS [Member] | Collateralized mortgage obligations guaranteed by FHLMC, FNMA and GNMA [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost After 1 to 5 years	$ 608	$ 6,530
Noncredit Loss Component of OTTI Recorded in OCI After 1 to 5 years	0	0
Gross Unrealized gains After 1 to 5 years	0	1
Gross Unrealized losses After 1 to 5 years	1	18
Fair value After 1 to 5 years	$ 607	$ 6,513
Weighted-average yield After 1 to 5 years	2.43%	3.15%
Amortized cost After 10 years	$ 80,130	$ 59,020
Noncredit Loss Component of OTTI Recorded in OCI After 10 years	0	0
Gross Unrealized gains After 10 years	362	474
Gross Unrealized losses After 10 years	220	60
Fair value After 10 years	$ 80,272	$ 59,434
Weighted-average yield After 10 years	2.76%	3.22%
Amortized cost	$ 80,738	$ 65,550
Noncredit Loss Component of OTTI Recorded in OCI	0	0
Gross unrealized gain	362	475
Gross unrealized loss	221	78
Fair value	$ 80,879	$ 65,947
Weighted-average yield	2.75%	3.22%
MBS [Member] | Private label [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost After 10 years	$ 15,997	$ 19,340
Noncredit Loss Component of OTTI Recorded in OCI After 10 years	4,881	5,426
Gross Unrealized gains After 10 years	0	0
Gross Unrealized losses After 10 years	0	0
Fair value After 10 years	$ 11,116	$ 13,914
Weighted-average yield After 10 years	3.90%	4.89%
Weighted-average yield	3.90%
Other Debt Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost After 1 to 5 years	$ 500	$ 500
Noncredit Loss Component of OTTI Recorded in OCI After 1 to 5 years	0	0
Gross Unrealized gains After 1 to 5 years	0	0
Gross Unrealized losses After 1 to 5 years	0	0
Fair value After 1 to 5 years	$ 500	$ 500
Weighted-average yield After 1 to 5 years	2.95%	2.96%

INVESTMENT SECURITIES - Aggrega

INVESTMENT SECURITIES - Aggregate amortized cost and approximate market value of investment securities available for sale by contractual maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Available For Sale Securities [Line Items]
Total Amortized cost	$ 2,109,008	$ 1,975,230
Total Fair value	2,123,525	1,942,568
United States And Puerto Rico Government Obligations And Other Debt Obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized cost Due within one year	93,299
Amortized cost After 1 to 5 years	150,491
Amortized cost After 5 to 10 years	67,764
Amortized cost After 10 years	28,790
Total Amortized cost	340,344
Fair value Due within one year	93,296
Fair value After 1 to 5 years	151,116
Fair value After 5 to 10 years	68,127
Fair value After 10 years	27,482
Total Fair value	340,021
Mortgage Backed Securities [Member]
Schedule Of Available For Sale Securities [Line Items]
Total Amortized cost	1,768,664	1,352,297
Total Fair value	$ 1,783,504	$ 1,326,460

INVESTMENT SECURITIES - Additio

INVESTMENT SECURITIES - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule Of Investments [Line Items]
Proceeds from sale of available-for-sale securities		$ 0	$ 47,805,000	$ 23,408,000
Amortized cost		2,109,008,000	1,975,230,000
Net impairment losses on available-for-sale debt securities		497,000	50,000	12,231,000
Fair value		2,123,525,000	1,942,568,000
Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities		6,138,000	5,828,000	5,563,000
MBS [Member]
Schedule Of Investments [Line Items]
Amortized cost		1,768,664,000	1,352,297,000
Fair value		1,783,504,000	1,326,460,000
MBS [Member] | Private label [Member]
Schedule Of Investments [Line Items]
Net impairment losses on available-for-sale debt securities		$ 500,000
Available-for-sale Securities [Member]
Schedule Of Investments [Line Items]
Percentage Of Debt Securities Government And Government Sponsored Agencies		99.00%
Proceeds from sale of available-for-sale securities		$ 0	47,800,000	23,400,000
Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held				6,792,000	$ 28,981,000
Available-for-sale Securities [Member] | Puerto Rico government obligations [Member]
Schedule Of Investments [Line Items]
Amortized cost		8,200,000
Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held				0	22,189,000
Fair value		7,300,000
Available-for-sale Securities [Member] | Puerto Rico government obligations [Member] | Residential Mortgage Backed Securities [Member]
Schedule Of Investments [Line Items]
Amortized cost		4,200,000
Fair value		3,000,000
Available-for-sale Securities [Member] | Puerto Rico government obligations [Member] | Accumulated Other-than-Temporary Impairment Attributable to Parent [Member]
Schedule Of Investments [Line Items]
Proceeds from sale of available-for-sale securities	$ 23,400,000
Amortized cost	23,000,000
Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held	34,400,000
Gain on Sale of Investments	400,000
Net impairment losses on available-for-sale debt securities	$ 12,200,000
Default Rate	100.00%
Available-for-sale Securities [Member] | Puerto Rico government obligations [Member] | Accumulated Other-than-Temporary Impairment Attributable to Parent [Member] | Minimum [Member]
Schedule Of Investments [Line Items]
Recovery Rate	15.00%
Available-for-sale Securities [Member] | Puerto Rico government obligations [Member] | Accumulated Other-than-Temporary Impairment Attributable to Parent [Member] | Maximum [Member]
Schedule Of Investments [Line Items]
Recovery Rate	80.00%
Available-for-sale Securities [Member] | Puerto Rico government obligations [Member] | Accumulated Other-than-Temporary Impairment Attributable to Parent [Member] | Weighted Average [Member]
Schedule Of Investments [Line Items]
Recovery Rate	41.00%
Available-for-sale Securities [Member] | MBS [Member]
Schedule Of Investments [Line Items]
Loss on Sale of Investments			59,000
Available-for-sale Securities [Member] | MBS [Member] | Private label [Member]
Schedule Of Investments [Line Items]
Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held		7,339,000	6,842,000	$ 6,792,000	$ 6,792,000
Net impairment losses on available-for-sale debt securities		$ 500,000	50,000
Loans Receivable, Description of Variable Rate Basis		The interest rate on these private-label MBS is variable, tied to 3-month LIBOR and limited to the weighted-average coupon on the underlying collateral
Available-for-sale Securities [Member] | MBS [Member] | Private label [Member] | FICO Score, Greater than 700 [Member] | LTV Less than 80 Percent [Member]
Schedule Of Investments [Line Items]
Financing Receivable, Credit Quality, Additional Information		The underlying mortgages are fixed-rate, single-family loans with original FICO scores (over 700) and moderate loan-to-value ratios (under 80%), as well as moderate delinquency levels.
Available-for-sale Securities [Member] | US Government-sponsored Enterprises Debt Securities [Member] | Call Option [Member]
Schedule Of Investments [Line Items]
Gain on Sale of Investments			$ 22,000
Held-to-maturity Securities [Member]
Schedule Of Investments [Line Items]
Percentage of held to maturity securities issued by three of the largest municipalities in Puerto Rico.		70.00%
Proceeds From Maturities Prepayments And Calls Of Held To Maturity Securities		$ 6,000,000

INVESTMENT SECURITIES - Availab

INVESTMENT SECURITIES - Available-For-Sale Investments' Fair Value And Gross Unrealized Losses (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Available For Sale Securities [Line Items]
Fair Value Less than 12 months	$ 278,893	$ 64,559
Unrealized Losses Less than 12 months	1,634	331
Fair Value 12 months or more	358,629	1,328,036
Unrealized Losses 12 months or more	8,422	39,591
Total Fair Value	637,522	1,392,595
Total Unrealized Losses	10,056	39,922
Puerto Rico government obligations [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value Less than 12 months	0	0
Unrealized Losses Less than 12 months	0	0
Fair Value 12 months or more	2,974	2,824
Unrealized Losses 12 months or more	1,192	1,361
Total Fair Value	2,974	2,824
Total Unrealized Losses	1,192	1,361
U.S. Treasury and U.S. government agencies obligations
Schedule Of Available For Sale Securities [Line Items]
Fair Value Less than 12 months	45,073	16,669
Unrealized Losses Less than 12 months	172	77
Fair Value 12 months or more	99,764	468,094
Unrealized Losses 12 months or more	252	6,004
Total Fair Value	144,837	484,763
Total Unrealized Losses	424	6,081
MBS [Member] | FNMA [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value Less than 12 months	58,668	25,079
Unrealized Losses Less than 12 months	499	129
Fair Value 12 months or more	173,708	521,871
Unrealized Losses 12 months or more	1,353	17,048
Total Fair Value	232,376	546,950
Total Unrealized Losses	1,852	17,177
MBS [Member] | FHLMC [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value Less than 12 months	74,134	3,382
Unrealized Losses Less than 12 months	270	32
Fair Value 12 months or more	63,864	263,798
Unrealized Losses 12 months or more	716	8,517
Total Fair Value	137,998	267,180
Total Unrealized Losses	986	8,549
MBS [Member] | GNMA [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value Less than 12 months	79,145	3,364
Unrealized Losses Less than 12 months	472	15
Fair Value 12 months or more	7,203	57,535
Unrealized Losses 12 months or more	28	1,235
Total Fair Value	86,348	60,899
Total Unrealized Losses	500	1,250
MBS [Member] | Collateralized mortgage obligations guaranteed by FHLMC, FNMA and GNMA [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value Less than 12 months	21,873	16,065
Unrealized Losses Less than 12 months	221	78
Fair Value 12 months or more	0	0
Unrealized Losses 12 months or more	0	0
Total Fair Value	21,873	16,065
Total Unrealized Losses	221	78
MBS [Member] | Private label [Member]
Schedule Of Available For Sale Securities [Line Items]
Fair Value Less than 12 months	0	0
Unrealized Losses Less than 12 months	0	0
Fair Value 12 months or more	11,116	13,914
Unrealized Losses 12 months or more	4,881	5,426
Total Fair Value	11,116	13,914
Total Unrealized Losses	$ 4,881	$ 5,426

INVESTMENT SECURITIES - OTTI Lo

INVESTMENT SECURITIES - OTTI Losses on Available-for-Sale Debt Securities (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Total OTTI losses	$ (557)	$ 0	$ (12,231)
Portion of OTTI recognized in OCI	60	(50)	0
Net impairment losses recognized in earnings	$ (497)	$ (50)	$ (12,231)

INVESTMENT SECURITIES - Roll-Fo

INVESTMENT SECURITIES - Roll-Forward of Credit Losses on Debt Securities Held by Corporation (Detail) - Available-for-sale Securities [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Beginning balance of credit losses on debt securities held for which a portion of an OTTI was recognized in OCI		$ 6,792	$ 28,981
Credit impairments recognized in earnings on securities that have been previously impaired			12,231
Credit loss reductions for securities sold during the period			(34,420)
Ending balance of credit losses on debt securities held for which a portion of an OTTI was recognized in OCI			6,792
Puerto Rico government obligations [Member]
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Beginning balance of credit losses on debt securities held for which a portion of an OTTI was recognized in OCI		0	22,189
Credit impairments recognized in earnings on securities that have been previously impaired			12,231
Credit loss reductions for securities sold during the period			(34,420)
Ending balance of credit losses on debt securities held for which a portion of an OTTI was recognized in OCI			0
MBS [Member] | Private label [Member]
Other Than Temporary Impairment Credit Losses Recognized In Earnings [Line Items]
Beginning balance of credit losses on debt securities held for which a portion of an OTTI was recognized in OCI	$ 6,842	6,792	6,792
Credit impairments recognized in earnings on securities that have been previously impaired	497	50	0
Credit loss reductions for securities sold during the period	0	0	0
Ending balance of credit losses on debt securities held for which a portion of an OTTI was recognized in OCI	$ 7,339	$ 6,842	$ 6,792

INVESTMENT SECURITIES - Signifi

INVESTMENT SECURITIES - Significant Assumptions in Valuation of Private Label MBS (Detail) - MBS [Member] - Private label [Member]	Dec. 31, 2019	Dec. 31, 2018
Discount rate [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0.137	0.145
Discount rate [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0.137	0.145
Discount rate [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0.137	0.145
Prepayment rate [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0.079	0.114
Prepayment rate [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0.068	0.033
Prepayment rate [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0.103	0.209
Projected Cumulative Loss Rate [Member] | Weighted Average [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0.028	0.030
Projected Cumulative Loss Rate [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0	0
Projected Cumulative Loss Rate [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt Securities, Available-for-sale, Measurement Input	0.074	0.068

INVESTMENT SECURITIES - Aggre_2

INVESTMENT SECURITIES - Aggregate amortized cost and market value of the securities by issuers when the aggregate amortized cost of the sucurities of such issuers exceed 10% of the Corporation's stockholders' equity (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
FHLMC [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 509,769	$ 387,703
Fair Value	513,249	379,653
GNMA [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	370,511	239,698
Fair Value	377,872	242,211
FNMA [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	915,704	791,200
Fair Value	924,663	775,673
FHLB [Member]
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	191,581	334,717
Fair Value	$ 191,869	$ 330,714

INVESTMENT SECURITIES - Inves_2

INVESTMENT SECURITIES - Investment Securities Held to Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Held To Maturity Securities [Line Items]
Held To Maturity Securities Amortized	$ 138,675	$ 144,815
Held to Maturity Fair value	110,374	125,658
Municipal Bonds [Member] | Puerto Rico [Member]
Schedule Of Held To Maturity Securities [Line Items]
Held to Matury Amortized Due Withing One Year	321
Held to Maturity Gross Unrecognized gain Due Within One Year	0
Held to Maturity Gross Unrecognized losses Due Within One Year	6
Held to Maturity Fair value Due Within One Year	$ 315
Held to Maturity Weighted-average yield Due withing One Year	5.84%
Held to Maturity Amortized Cost After 1 to 5 years	$ 8,264	6,100
Held to Maturity Gross Unrecognized gains After 1 to 5 years	0	0
Held to Maturity Gross Unrecognized losses After 1 to 5 years	736	435
Held to Maturity Fair value After 1 to 5 years	$ 7,528	$ 5,665
Held to Maturity Weighted-average yield After 1 to 5 years	5.18%	4.79%
Held to Maturity Amortized Cost After 5 to 10 years	$ 56,511	$ 53,016
Held to Maturity Gross Unrecognized gains After 5 to 10 yearss	0	0
Held to Maturity Gross Unrecognized losses After 5 to 10 years	8,646	5,360
Held to Maturity Fair value After 5 to 10 years	$ 47,865	$ 47,656
Held to Maturity Weighted-average yield After 5 to 10 years	5.77%	6.00%
Held to Maturity Amortized Cost After 10 years	$ 73,579	$ 85,699
Held to Maturity Gross Unrecognized gains After 10 years	0	0
Held to Maturity Gross Unrecognized losses After 10 years	18,913	13,362
Held to Maturity Fair value After 10 years	$ 54,666	$ 72,337
Held to Maturity Weighted-average yield After 10 years	5.44%	5.86%
Held To Maturity Securities Amortized	$ 138,675	$ 144,815
Held to Maturity Gross Unrecognized gains	0	0
Held to Maturity Gross Unrecognized losses	28,301	19,157
Held to Maturity Fair value	$ 110,374	$ 125,658
Held to Maturity Weighted-average yield	5.56%	5.86%

INVESTMENT SECURITIES - Inves_3

INVESTMENT SECURITIES - Investments Securities Held to Maturity (Securities in continous unrealized loss position) (Detail) - Puerto Rico [Member] - Municipal Bonds [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Schedule Of Held To Maturity Securities [Line Items]
HTM Fair Value Less than 12 months	$ 0	$ 0
HTM Unrealized Losses Less than 12 months	0	0
HTM Fair Value 12 months or more	110,374	125,658
HTM Unrealized Losses 12 months or more	28,301	19,157
HTM Fair Value	110,374	125,658
HTM Unrealized Losses	$ 28,301	$ 19,157

EQUITY SECURITIES - Additional

EQUITY SECURITIES - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Summary of Investment Holdings [Line Items]
Capital stock par value	$ 100
Book value of investment in FHLB stock	$ 34,100	$ 41,900
Market-to-market gains (losses)	39,909	32,742	$ 28,854
Equity Securities [Member]
Summary of Investment Holdings [Line Items]
Equity Securities	1,400	400
Market-to-market gains (losses)	400	(9)
Equity Securities without Readily Determinable Fair Value, Amount	2,800	2,200
Investment in Federal Home Loan Bank Stock [Member]
Summary of Investment Holdings [Line Items]
Dividend income from FHLB stock	$ 2,700	$ 2,700	$ 2,100

INTEREST AND DIVIDEND ON INVE_3

INTEREST AND DIVIDEND ON INVESTMENTS- Interest on investments and FHLB dividend income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Income And Expenses [Line Items]
Mortgage-backed securities	$ 37,044	$ 36,429	$ 34,231
PR Government obligations, U.S. Treasury securities and U.S. Government agencies	19,788	21,052	14,781
Total Intesrest income investment securities	59,546	60,224	51,125
Interest on money market investments and interest-bearing cash accounts	13,353	11,096	4,614
Total interest and dividends on investments	72,899	71,320	55,739
Taxable [Member]
Other Income And Expenses [Line Items]
Mortgage-backed securities	7,812	8,688	9,656
PR Government obligations, U.S. Treasury securities and U.S. Government agencies	165	470	2,091
Other investment securities (including FHLB dividends)	2,714	2,743	2,113
Interest on money market investments and interest-bearing cash accounts	13,205	10,863	4,609
Exempt [Member]
Other Income And Expenses [Line Items]
Mortgage-backed securities	29,232	27,741	24,575
PR Government obligations, U.S. Treasury securities and U.S. Government agencies	19,623	20,582	12,690
Interest on money market investments and interest-bearing cash accounts	$ 148	$ 233	$ 5

INTEREST AND DIVIDEND ON INVE_4

INTEREST AND DIVIDEND ON INVESTMENTS- Components of interest and dividend income on investments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of interest and dividend income on investments [Abstract]
Interest income on investment securities, money market investments, and interest-bearing cash accounts	$ 70,217	$ 68,592	$ 53,634
Dividends on FHLB stock	2,682	2,728	2,105
Total interest and dividends on investments	$ 72,899	$ 71,320	$ 55,739

LOANS HELD FOR INVESTMENT - Loa

LOANS HELD FOR INVESTMENT - Loan Portfolio Held for Investment (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	$ 9,002,205	$ 8,858,123	$ 8,850,476
Less: allowance for loan and lease losses	(155,139)	(196,362)	(231,843)	$ (205,603)
Loans And Leases Receivable Net Reported Amount	8,847,066	8,661,761
Commercial Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	3,786,779	3,750,202
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	1,444,586	1,522,662	1,614,972
Less: allowance for loan and lease losses	(39,194)	(55,581)	(48,493)	(57,261)
Commercial Portfolio Segment [Member] | Commercial and Industrial loans [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	2,230,876	2,148,111	2,083,253
Less: allowance for loan and lease losses	(15,198)	(32,546)	(48,871)	(61,953)
Consumer Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	2,281,653	1,944,713	1,749,897
Less: allowance for loan and lease losses	(53,571)	(53,849)	(70,982)	(49,847)
Residential Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	2,933,773	3,163,208	3,290,957
Less: allowance for loan and lease losses	(44,806)	(50,794)	(58,975)	(33,980)
Construction loans [Member] | Commercial Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	111,317	79,429	111,397
Less: allowance for loan and lease losses	(2,370)	(3,592)	$ (4,522)	$ (2,562)
Finance Leases [Member] | Consumer Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	414,532	333,536
Residential Mortgage [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	9,301	11,151
Consumer Loan [Member] | Consumer Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	$ 1,867,121	$ 1,611,177

LOANS HELD FOR INVESTMENT - L_2

LOANS HELD FOR INVESTMENT - Loan Portfolio Held for Investment (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	$ 9,002,205	$ 8,858,123	$ 8,850,476
Commercial Portfolio Segment [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	3,786,779	3,750,202
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	2,230,876	2,148,111	$ 2,083,253
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Commercial Mortgage Backed Securities [Member]
Loans and Leases Receivable Disclosure [Line Items]
Loans and Leases Receivable, Gross	$ 719,000	$ 796,800

LOANS HELD FOR INVESTMENT - L_3

LOANS HELD FOR INVESTMENT - Loans Held for Investment on Which Accrual of Interest Income had been Discontinued (Detail) - Nonperforming Financial Instruments [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Non-performing loans:
Total non-performing loans held for investment	$ 210,668	$ 315,973
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Non-performing loans:
Total non-performing loans held for investment	40,076	109,536
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Land [Member]
Non-performing loans:
Total non-performing loans held for investment	2,743	6,260
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member}
Non-performing loans:
Total non-performing loans held for investment	18,773	30,382
Residential Portfolio Segment [Member]
Non-performing loans:
Total non-performing loans held for investment	121,408	147,287
Consumer Portfolio Segment [Member] | Auto loans [Member]
Non-performing loans:
Total non-performing loans held for investment	12,220	11,212
Consumer Portfolio Segment [Member] | Other Loans [Member]
Non-performing loans:
Total non-performing loans held for investment	7,055	7,865
Consumer Portfolio Segment [Member] | Finance Leases [Member]
Non-performing loans:
Total non-performing loans held for investment	1,354	1,329
Residential Mortgage [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member]
Non-performing loans:
Total non-performing loans held for investment	1,004	2,102
Commercial loan [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member]
Non-performing loans:
Total non-performing loans held for investment	$ 6,035	$ 0

LOANS HELD FOR INVESTMENT - L_4

LOANS HELD FOR INVESTMENT - Loans Held for Investment on Which Accrual of Interest Income had been Discontinued (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale	$ 39,477	$ 43,186
Loans and Leases Receivable, Gross	9,002,205	8,858,123	$ 8,850,476
TDR
Accounts, Notes, Loans and Financing Receivable [Line Items]
TDR loans in commpliance with modified terms and in accrual status	398,257	478,928
PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 136,700	146,640	$ 158,174
Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale		$ 16,100

LOANS HELD FOR INVESTMENT - Cor

LOANS HELD FOR INVESTMENT - Corporation's Aging of Loans Held for Investment Portfolio (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 473,810,000	$ 574,654,000
Financing Receivable, Current	8,391,695,000	8,136,829,000
Loans held for investment	9,002,205,000	8,858,123,000	$ 8,850,476,000
90 days past due and still accruing	108,004,000	129,083,000
Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	2,933,773,000	3,163,208,000	3,290,957,000
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	3,786,779,000	3,750,202,000
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	43,829,000	111,520,000
Financing Receivable, Current	1,397,801,000	1,407,678,000
Loans held for investment	1,444,586,000	1,522,662,000	1,614,972,000
90 days past due and still accruing	202,000	946,000
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	2,281,653,000	1,944,713,000	1,749,897,000
Commercial And Industrial Sector [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	27,724,000	38,001,000
Financing Receivable, Current	2,203,152,000	2,110,110,000
Loans held for investment	2,230,876,000	2,148,111,000	2,083,253,000
90 days past due and still accruing	7,061,000	5,003,000
Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	214,569,000	223,928,000
Financing Receivable, Current	2,461,551,000	2,648,899,000
Loans held for investment	2,809,864,000	3,016,003,000
90 days past due and still accruing	15,190,000	14,564,000
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	28,144,000	26,057,000
Financing Receivable, Current	704,122,000	638,644,000
Loans held for investment	732,266,000	664,701,000
90 days past due and still accruing	4,411,000	3,752,000
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	111,317,000	79,429,000	111,397,000
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,004,000	2,102,000
Financing Receivable, Current	8,297,000	9,049,000
Loans held for investment	9,301,000	11,151,000
90 days past due and still accruing	0	0
Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,035,000	0
Financing Receivable, Current	79,488,000	47,965,000
Loans held for investment	85,523,000	47,965,000
90 days past due and still accruing	0	0
Construction Loans [Member] | Land [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,848,000	6,534,000
Financing Receivable, Current	13,645,000	13,779,000
Loans held for investment	16,493,000	20,313,000
90 days past due and still accruing	0	67,000
Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	57,192,000	49,385,000
Financing Receivable, Current	1,077,663,000	897,091,000
Loans held for investment	1,134,855,000	946,476,000
90 days past due and still accruing	0	0
Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	9,257,000	8,193,000
Financing Receivable, Current	405,275,000	325,343,000
Loans held for investment	414,532,000	333,536,000
90 days past due and still accruing	0	0
FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	83,208,000	108,934,000
Financing Receivable, Current	40,701,000	38,271,000
Loans held for investment	123,909,000	147,205,000
90 days past due and still accruing	81,140,000	104,751,000
30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	55,640,000	49,020,000
30-59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Loans held for investment	6,600,000	5,100,000
30-59 Days Past Due [Member] | Commercial And Industrial Sector [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,785,000	2,550,000
30-59 Days Past Due [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Loans held for investment	105,100,000	101,400,000
30-59 Days Past Due [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	10,921,000	9,898,000
30-59 Days Past Due [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
30-59 Days Past Due [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
30-59 Days Past Due [Member] | Construction Loans [Member] | Land [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Loans held for investment	100,000	200,000
30-59 Days Past Due [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	36,433,000	31,070,000
30-59 Days Past Due [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,501,000	5,502,000
30-59 Days Past Due [Member] | FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Loans held for investment	7,100,000	5,600,000
60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	99,498,000	80,578,000
60-89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	3,551,000	1,038,000
60-89 Days Past Due [Member] | Commercial And Industrial Sector [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	105,000	66,000
60-89 Days Past Due [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	77,971,000	62,077,000
60-89 Days Past Due [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	5,757,000	4,542,000
60-89 Days Past Due [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
60-89 Days Past Due [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
60-89 Days Past Due [Member] | Construction Loans [Member] | Land [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	105,000	207,000
60-89 Days Past Due [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	8,539,000	7,103,000
60-89 Days Past Due [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,402,000	1,362,000
60-89 Days Past Due [Member] | FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,068,000	4,183,000
90 days or more Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	318,672,000	445,056,000
90 days or more Past Due [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	40,278,000	110,482,000
90 days or more Past Due [Member] | Commercial And Industrial Sector [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	25,834,000	35,385,000
90 days or more Past Due [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	136,598,000	161,851,000
90 days or more Past Due [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	11,466,000	11,617,000
90 days or more Past Due [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,004,000	2,102,000
90 days or more Past Due [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	6,035,000	0
90 days or more Past Due [Member] | Construction Loans [Member] | Land [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,743,000	6,327,000
90 days or more Past Due [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	12,220,000	11,212,000
90 days or more Past Due [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	1,354,000	1,329,000
90 days or more Past Due [Member] | FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	81,140,000	104,751,000
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	34,568,000	36,423,000
Financing Receivable, Current	102,132,000	110,217,000
Loans held for investment	136,700,000	146,640,000	158,174,000
Financial Asset Acquired with Credit Deterioration [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	32,548,000	33,911,000
Financing Receivable, Current	101,196,000	109,265,000
Loans held for investment	133,744,000	143,176,000	153,991,000
Financial Asset Acquired with Credit Deterioration [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	2,020,000	2,512,000
Financing Receivable, Current	936,000	952,000
Loans held for investment	2,956,000	3,464,000	4,183,000
Financial Asset Acquired with Credit Deterioration [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	0	0	0
Financial Asset Acquired with Credit Deterioration [Member] | Commercial And Industrial Sector [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	0	0	0
Financial Asset Acquired with Credit Deterioration [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	133,744,000	143,176,000
Financial Asset Acquired with Credit Deterioration [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	0	0
Financial Asset Acquired with Credit Deterioration [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	0	0	$ 0
Financial Asset Acquired with Credit Deterioration [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	0	0
Financial Asset Acquired with Credit Deterioration [Member] | Construction Loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	0	0
Financial Asset Acquired with Credit Deterioration [Member] | Construction Loans [Member] | Land [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	0	0
Financial Asset Acquired with Credit Deterioration [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	0	0
Financial Asset Acquired with Credit Deterioration [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	0	0
Financial Asset Acquired with Credit Deterioration [Member] | FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment	0	0
Financial Asset Acquired with Credit Deterioration [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Financial Asset Acquired with Credit Deterioration [Member] | 30-59 Days Past Due [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Loans held for investment	11,200,000	11,600,000
Financial Asset Acquired with Credit Deterioration [Member] | 30-59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Loans held for investment	0
Financial Asset Acquired with Credit Deterioration [Member] | 60-89 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,530,000	6,979,000
Financial Asset Acquired with Credit Deterioration [Member] | 60-89 Days Past Due [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	7,530,000	6,979,000
Financial Asset Acquired with Credit Deterioration [Member] | 60-89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	0	0
Financial Asset Acquired with Credit Deterioration [Member] | 90 days or more Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	27,038,000	29,444,000
Financial Asset Acquired with Credit Deterioration [Member] | 90 days or more Past Due [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	25,018,000	26,932,000
Financial Asset Acquired with Credit Deterioration [Member] | 90 days or more Past Due [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Past Due	$ 2,020,000	$ 2,512,000

LOANS HELD FOR INVESTMENT - C_2

LOANS HELD FOR INVESTMENT - Corporation's Aging of Loans Held for Investment Portfolio (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing	$ 108,004	$ 129,083
Loans and Leases Receivable, Gross	$ 9,002,205	8,858,123	$ 8,850,476
Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Threshold Period Past Due, Writeoff	180 days
Loans and Leases Receivable, Impaired, Description	According to the Corporation's delinquency policy and consistent with the instructions for the preparation of the Consolidated Financial Statements for Bank Holding Companies (FR Y-9C) required by the Federal Reserve Board, residential mortgage, commercial mortgage, and construction loans are considered past due when the borrower is in arrears on two or more monthly payments
Loans and Leases Receivable, Gross	$ 2,933,773	3,163,208	3,290,957
Residential Portfolio Segment [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing	15,190	14,564
Loans and Leases Receivable, Gross	2,809,864	3,016,003
Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Gross	105,100	101,400
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Gross	3,786,779	3,750,202
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing	$ 202	946
Loans and Leases Receivable, Impaired, Description	According to the Corporation's delinquency policy and consistent with the instructions for the preparation of the Consolidated Financial Statements for Bank Holding Companies (FR Y-9C) required by the Federal Reserve Board, residential mortgage, commercial mortgage, and construction loans are considered past due when the borrower is in arrears on two or more monthly payments
Loans and Leases Receivable, Gross	$ 1,444,586	1,522,662	1,614,972
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Impaired, Description	According to the Corporation's delinquency policy and consistent with the instructions for the preparation of the Consolidated Financial Statements for Bank Holding Companies (FR Y-9C) required by the Federal Reserve Board, residential mortgage, commercial mortgage, and construction loans are considered past due when the borrower is in arrears on two or more monthly payments
Loans and Leases Receivable, Gross	$ 111,317	79,429	111,397
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing	0	67
Loans and Leases Receivable, Gross	16,493	20,313
Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Gross	6,600	5,100
Commercial Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Construction Loans [Member] | Land [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Gross	100	200
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Gross	$ 2,281,653	$ 1,944,713	$ 1,749,897
Consumer Portfolio Segment [Member] | Credit Card [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, Threshold Period Past Due, Writeoff	180 days	180 days
Consumer Portfolio Segment [Member] | Other Loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing	$ 4,411	$ 3,752
Loans and Leases Receivable, Gross	732,266	664,701
Loans Insured or Guaranteed by US Government Authorities [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing	81,140	104,751
Defaulted loans collateralizing Ginnie Mae (GNMA) securities	35,600	43,600
Loans and Leases Receivable, Gross	123,909	147,205
Loans Insured or Guaranteed by US Government Authorities [Member] | Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans and Leases Receivable, Gross	7,100	5,600
Loans Insured or Guaranteed by US Government Authorities [Member] | Nonaccrual Of Interest [Member] | Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing	$ 37,900	$ 51,400
Period Of Residential Mortgage Loan That Are No Longer Accruing Interest	15 months	15 months

LOANS HELD FOR INVESTMENT - Com

LOANS HELD FOR INVESTMENT - Commercial Credit Exposure - Credit RiskProfile Based on Creditworthiness Category (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	$ 9,002,205	$ 8,858,123	$ 8,850,476
Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	3,786,779	3,750,202
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	1,444,586	1,522,662	1,614,972
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	2,230,876	2,148,111	2,083,253
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	111,317	79,429	$ 111,397
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	9,301	11,151
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	85,523	47,965
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	16,493	20,313
Special Mention [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	52,407	257,817
Special Mention [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	13,080	172,260
Special Mention [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	39,327	85,557
Special Mention [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Special Mention [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Special Mention [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Substandard [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	217,435	331,718
Substandard [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	175,838	276,935
Substandard [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	29,031	45,274
Substandard [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	1,004	2,102
Substandard [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	6,035	0
Substandard [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	5,527	7,407
Doubtful [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	2,768	7,815
Doubtful [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	1,701
Doubtful [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	2,768	6,114
Doubtful [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Doubtful [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Doubtful [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Loss [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	249	396
Loss [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Loss [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	249	396
Loss [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Loss [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Loss [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Total Adversely Classified [Member] | Commercial Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	272,859	597,746
Total Adversely Classified [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	188,918	450,896
Total Adversely Classified [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	71,375	137,341
Total Adversely Classified [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Residential Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	1,004	2,102
Total Adversely Classified [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	6,035	0
Total Adversely Classified [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Land [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	$ 5,527	$ 7,407

LOANS HELD FOR INVESTMENT - C_3

LOANS HELD FOR INVESTMENT - Commercial Credit Exposure - Credit RiskProfile Based on Creditworthiness Category (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Held For Sale Net	$ 39,477	$ 43,186
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Held For Sale Net	0	11,371
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Held For Sale Net	0	1,725
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Held For Sale Net	$ 0	3,015
Nonperforming Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Held For Sale Net		16,100
Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Held For Sale Net		11,400
Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Held For Sale Net		1,700
Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member] | Commercial loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans Receivable Held For Sale Net		$ 3,000

LOANS HELD FOR INVESTMENT - Con

LOANS HELD FOR INVESTMENT - Consumer Credit Exposure - Credit RiskProfile Based on Payment Activity (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	$ 9,002,205	$ 8,858,123	$ 8,850,476
90 days past due and still accruing	108,004	129,083
Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	2,933,773	3,163,208	3,290,957
Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	2,281,653	1,944,713	1,749,897
Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	2,809,864	3,016,003
90 days past due and still accruing	15,190	14,564
Other Loans [Member] | Residential Portfolio Segment [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	105,100	101,400
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	732,266	664,701
90 days past due and still accruing	4,411	3,752
Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	1,134,855	946,476
90 days past due and still accruing	0	0
Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	414,532	333,536
90 days past due and still accruing	0	0
FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	123,909	147,205
90 days past due and still accruing	81,140	104,751
FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	7,100	5,600
PCI loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	136,700	146,640	158,174
PCI loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	133,744	143,176	153,991
PCI loans [Member] | Residential Portfolio Segment [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	11,200	11,600
PCI loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0	0
PCI loans [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	133,744	143,176
PCI loans [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
PCI loans [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
PCI loans [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
PCI loans [Member] | FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Performing Financing Receivable [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	8,296,333	7,951,214	7,901,994
Performing Financing Receivable [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	2,422,789	2,616,300	2,703,532
Performing Financing Receivable [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	2,256,233	1,913,387	$ 1,711,503
Performing Financing Receivable [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	2,554,712	2,725,540
Performing Financing Receivable [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	725,211	656,836
Performing Financing Receivable [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	1,122,635	935,264
Performing Financing Receivable [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	413,178	332,207
Performing Financing Receivable [Member] | FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	123,909	147,205
Nonperforming Financial Instruments [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	121,408	147,287
Nonperforming Financial Instruments [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	7,055	7,865
Nonperforming Financial Instruments [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	12,220	11,212
Nonperforming Financial Instruments [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	1,354	1,329
Nonperforming Financial Instruments [Member] | FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans and Leases Receivable, Gross	0	0
Nonaccrual Of Interest [Member] | FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member] | 30-59 Days Past Due [Member]
Financing Receivable, Recorded Investment [Line Items]
90 days past due and still accruing	$ 37,900	$ 51,400
Period Of Residential Mortgage Loan That Are No Longer Accruing Interest	15 months	15 months

LOANS HELD FOR INVESTMENT - C_4

LOANS HELD FOR INVESTMENT - Consumer Credit Exposure - Credit Risk Profile Based on Payment Activity (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing	$ 108,004	$ 129,083
Residential Portfolio Segment [Member] | FHA/VA government-guaranteed loans [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing	81,140	104,751
Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | FHA/VA government-guaranteed loans [Member] | Nonaccrual Of Interest [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable Recorded Investment 90 Days Past Due And Still Accruing	$ 37,900	$ 51,400
Period Of Residential Mortgage Loan That Are No Longer Accruing Interest	15 months	15 months

LOANS HELD FOR INVESTMENT - Imp

LOANS HELD FOR INVESTMENT - Impaired loans (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	$ 381,860,000	$ 571,872,000
Unpaid Principal Balance with Related Allowance	453,062,000	638,094,000
Related Allowance	36,115,000	53,976,000	$ 51,410,000
Recorded Investment with no Related Allowance	187,312,000	188,397,000
Unpaid Principal Balance with no Related Allowance	245,666,000	252,207,000
Recorded Investment	569,172,000	760,269,000	790,308,000	$ 887,905,000
Unpaid Principal Balance	698,728,000	890,301,000
Average Recorded Investments	589,408,000	785,431,000	832,155,000
Interest Income on Impaired Loans Accrual Basis	24,777,000	27,695,000	24,243,000
Interest Income on Impaired Loans Cash Basis	1,335,000	3,710,000	3,453,000
Impaired Financing Receivable Interest Income	26,112,000	31,405,000	27,696,000
Finance Leases [Member] | Consumer Loan [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	1,533,000	1,914,000
Unpaid Principal Balance with Related Allowance	1,711,000	1,914,000
Related Allowance	80,000	102,000
Recorded Investment with no Related Allowance	0	22,000
Unpaid Principal Balance with no Related Allowance	0	22,000
Recorded Investment	1,533,000	1,936,000
Unpaid Principal Balance	1,711,000	1,936,000
Average Recorded Investments		2,197,000	2,428,000
Interest Income on Impaired Loans Accrual Basis		145,000	168,000
Interest Income on Impaired Loans Cash Basis		0	0
Impaired Financing Receivable Interest Income		145,000	168,000
Residential Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	265,280,000	293,494,000
Related Allowance	17,037,000	19,965,000	22,086,000
Recorded Investment with no Related Allowance	111,960,000	110,238,000
Recorded Investment	377,240,000	403,732,000	433,434,000
Residential Portfolio Segment [Member] | Other Loans [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	265,280,000	293,494,000
Unpaid Principal Balance with Related Allowance	288,663,000	325,897,000
Related Allowance	17,037,000	19,965,000
Recorded Investment with no Related Allowance	111,960,000	110,238,000
Unpaid Principal Balance with no Related Allowance	158,063,000	148,920,000
Recorded Investment	377,240,000	403,732,000
Unpaid Principal Balance	446,726,000	474,817,000
Average Recorded Investments	385,160,000	411,730,000	438,847,000
Interest Income on Impaired Loans Accrual Basis	17,038,000	18,131,000	17,316,000
Interest Income on Impaired Loans Cash Basis	907,000	1,376,000	2,478,000
Impaired Financing Receivable Interest Income	17,945,000	19,507,000	19,794,000
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	49,324,000	61,162,000
Unpaid Principal Balance with Related Allowance	86,762,000	76,027,000
Related Allowance	7,123,000	9,693,000	12,359,000
Recorded Investment with no Related Allowance	27,209,000	30,030,000
Unpaid Principal Balance with no Related Allowance	31,360,000	48,085,000
Recorded Investment	76,533,000	91,192,000	118,300,000
Unpaid Principal Balance	118,122,000	124,112,000
Average Recorded Investments	82,526,000	99,050,000	121,233,000
Interest Income on Impaired Loans Accrual Basis	3,673,000	2,530,000	1,447,000
Interest Income on Impaired Loans Cash Basis	113,000	9,000	403,000
Impaired Financing Receivable Interest Income	3,786,000	2,539,000	1,850,000
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	34,437,000	184,068,000
Unpaid Principal Balance with Related Allowance	43,936,000	201,116,000
Related Allowance	6,788,000	17,684,000	9,783,000
Recorded Investment with no Related Allowance	44,120,000	43,358,000
Unpaid Principal Balance with no Related Allowance	48,195,000	49,253,000
Recorded Investment	78,557,000	227,426,000	152,914,000
Unpaid Principal Balance	92,131,000	250,369,000
Average Recorded Investments	80,846,000	233,372,000	180,283,000
Interest Income on Impaired Loans Accrual Basis	1,916,000	4,434,000	1,983,000
Interest Income on Impaired Loans Cash Basis	156,000	2,135,000	390,000
Impaired Financing Receivable Interest Income	2,072,000	6,569,000	2,373,000
Commercial Portfolio Segment [Member] | Construction loans [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	8,583,000	4,162,000
Related Allowance	820,000	760,000	2,017,000
Recorded Investment with no Related Allowance	2,839,000	2,431,000
Recorded Investment	11,422,000	6,593,000	47,266,000
Commercial Portfolio Segment [Member] | Construction loans [Member] | Residential Mortgage [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	514,000	1,718,000
Unpaid Principal Balance with Related Allowance	514,000	2,370,000
Related Allowance	13,000	208,000
Recorded Investment with no Related Allowance	956,000	0
Unpaid Principal Balance with no Related Allowance	1,531,000	0
Recorded Investment	1,470,000	1,718,000
Unpaid Principal Balance	2,045,000	2,370,000
Average Recorded Investments	1,482,000	1,724,000	252,000
Interest Income on Impaired Loans Accrual Basis	21,000	0	0
Interest Income on Impaired Loans Cash Basis	0	0	0
Impaired Financing Receivable Interest Income	21,000	0	0
Commercial Portfolio Segment [Member] | Construction loans [Member] | Commercial loan [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	6,035,000	0
Unpaid Principal Balance with Related Allowance	6,035,000	0
Related Allowance	279,000	0
Recorded Investment with no Related Allowance	0	0
Unpaid Principal Balance with no Related Allowance	0	0
Recorded Investment	6,035,000	0
Unpaid Principal Balance	6,035,000	0
Average Recorded Investments	6,036,000	0	35,996,000
Interest Income on Impaired Loans Accrual Basis	0	0	0
Interest Income on Impaired Loans Cash Basis	0	0	0
Impaired Financing Receivable Interest Income	0	0	0
Commercial Portfolio Segment [Member] | Construction loans [Member] | Land [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	2,034,000	2,444,000
Unpaid Principal Balance with Related Allowance	2,404,000	2,923,000
Related Allowance	528,000	552,000
Recorded Investment with no Related Allowance	1,883,000	2,431,000
Unpaid Principal Balance with no Related Allowance	2,530,000	2,927,000
Recorded Investment	3,917,000	4,875,000
Unpaid Principal Balance	4,934,000	5,850,000
Average Recorded Investments	4,258,000	5,025,000	14,174,000
Interest Income on Impaired Loans Accrual Basis	85,000	93,000	372,000
Interest Income on Impaired Loans Cash Basis	28,000	26,000	38,000
Impaired Financing Receivable Interest Income	113,000	119,000	410,000
Consumer Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	24,236,000	28,986,000
Related Allowance	4,347,000	5,874,000	5,165,000
Recorded Investment with no Related Allowance	1,184,000	2,340,000
Recorded Investment	25,420,000	31,326,000	38,394,000
Consumer Portfolio Segment [Member] | Other Loans [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	8,243,000	9,291,000
Unpaid Principal Balance with Related Allowance	8,591,000	10,066,000
Related Allowance	829,000	2,083,000
Recorded Investment with no Related Allowance	1,105,000	2,068,000
Unpaid Principal Balance with no Related Allowance	3,832,000	2,750,000
Recorded Investment	9,348,000	11,359,000
Unpaid Principal Balance	12,423,000	12,816,000
Average Recorded Investments	10,453,000	12,177,000	14,324,000
Interest Income on Impaired Loans Accrual Basis	824,000	913,000	1,176,000
Interest Income on Impaired Loans Cash Basis	131,000	164,000	144,000
Impaired Financing Receivable Interest Income	955,000	1,077,000	1,320,000
Consumer Portfolio Segment [Member] | Auto loans [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	14,460,000	17,781,000
Unpaid Principal Balance with Related Allowance	14,446,000	17,781,000
Related Allowance	3,438,000	3,689,000
Recorded Investment with no Related Allowance	79,000	250,000
Unpaid Principal Balance with no Related Allowance	155,000	250,000
Recorded Investment	14,539,000	18,031,000
Unpaid Principal Balance	14,601,000	18,031,000
Average Recorded Investments	16,832,000	20,156,000	24,618,000
Interest Income on Impaired Loans Accrual Basis	1,084,000	1,449,000	1,781,000
Interest Income on Impaired Loans Cash Basis	0	0	0
Impaired Financing Receivable Interest Income	1,084,000	1,449,000	1,781,000
Consumer Portfolio Segment [Member] | Finance Leases [Member]
Financing Receivable Impaired [Line Items]
Average Recorded Investments	1,815,000
Interest Income on Impaired Loans Accrual Basis	136,000
Interest Income on Impaired Loans Cash Basis	0
Impaired Financing Receivable Interest Income	136,000
FHA/VA government-guaranteed loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment with Related Allowance	0	0
Unpaid Principal Balance with Related Allowance	0	0
Related Allowance	0	0
Recorded Investment with no Related Allowance	0	0
Unpaid Principal Balance with no Related Allowance	0	0
Recorded Investment	0	0
Unpaid Principal Balance	0	0
Average Recorded Investments	0	0	0
Interest Income on Impaired Loans Accrual Basis	0	0	0
Interest Income on Impaired Loans Cash Basis	0	0	0
Impaired Financing Receivable Interest Income	$ 0	$ 0	$ 0

LOANS HELD FOR INVESTMENT - Add

LOANS HELD FOR INVESTMENT - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Feb. 27, 2015	Mar. 31, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Pledged as Collateral			$ 1,800,000	$ 1,900,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans			13,900	21,400	$ 35,200
Branches Acquired of Doral Bank	10
Financing Receivable, Past Due			473,810	574,654
Impaired Financing Receivable, Unpaid Principal Balance			698,728	890,301
Loans and Leases Receivable, Gross			$ 9,002,205	8,858,123	8,850,476
Minimum Period To Be Considered For Loan To Have Defaulted			90 days
Entity Loan Modification Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring			$ 487,997	582,647	587,219	$ 647,048
Outstanding unfunded commitments on TDR loans			$ 3,700
Loan Restructuring Trial Modifications Period			6 months
Financing Receivable Removed From Troubled Debt Restructurings Classification				9,900
Entity Loan Modification Program [Member] | Ab Note Restructure Workout Strategy [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring			$ 51,228	33,840	35,577	$ 36,971
Puerto Rico [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			$ 6,695,953	6,586,033	6,633,432
Credit risk concentration			74.00%
United States [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			$ 1,879,346	1,834,088	1,665,448
Credit risk concentration			21.00%
Virgin Islands [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			$ 466,383	481,188	584,576
USVI and BVI [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit risk concentration			5.00%
Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			$ 8,296,333	7,951,214	7,901,994
Performing [Member] | Entity Loan Modification Program [Member] | Ab Note Restructure Workout Strategy [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring			41,600
Nonaccrual loans [Member] | Puerto Rico [Member] | Government [Member] | Puerto Rico Electric Power Authority [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Sale		$ 64,000
Impaired Financing Receivable, Unpaid Principal Balance		$ 75,000
PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses PCI			11,434	11,354	11,251
Outstanding Principal Balance PCI			167,900	181,100
Financing Receivable, Past Due			34,568	36,423
Loans and Leases Receivable, Gross			136,700	146,640	158,174
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Servicing Portfolio			3,100,000	2,900,000
Mortgage Loans in Process of Foreclosure, Amount			$ 159,600
Loans Foreclosure Delinquency Threshold			120 days
Financing Receivable, Real Estate Acquired Through Foreclosure [Policy Text Block]			The Corporation commences the foreclosure process on residential real estate loans when a borrower becomes 120 days delinquent in accordance with the requirements of the CFPB. Foreclosure procedures and timelines vary depending on whether the property is located in a judicial or non-judicial state. Judicial states ( i.e. , Puerto Rico, Florida and the USVI) require the foreclosure to be processed through the state’s court while foreclosure in non-judicial states ( i.e. , the BVI) is processed without court intervention. Foreclosure timelines vary according to local jurisdiction law and investor guidelines. Occasionally, foreclosures may be delayed due to, among other reasons, mandatory mediations, bankruptcy, court delays and title issues.
Financing Receivable, Purchase			$ 18,800	46,100	58,900
Loans and Leases Receivable, Gross			2,933,773	3,163,208	3,290,957
Residential Portfolio Segment [Member] | Entity Loan Modification Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans in trial			1,400
Residential Portfolio Segment [Member] | Government [Member] | Puerto Rico Housing Finance Authority [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			106,900	112,100
Residential Portfolio Segment [Member] | Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due			214,569	223,928
Impaired Financing Receivable, Unpaid Principal Balance			446,726	474,817
Loans and Leases Receivable, Gross			2,809,864	3,016,003
Residential Portfolio Segment [Member] | Other Loans [Member] | Entity Loan Modification Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring			316,649	333,902
Residential Portfolio Segment [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			2,422,789	2,616,300	2,703,532
Residential Portfolio Segment [Member] | Performing [Member] | Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			2,554,712	2,725,540
Residential Portfolio Segment [Member] | Nonaccrual loans [Member] | Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			121,408	147,287
Residential Portfolio Segment [Member] | PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans in Process of Foreclosure, Amount			18,700
Allowance for Loan Losses PCI			11,063	10,954	10,873
Financing Receivable, Past Due			32,548	33,911
Loans and Leases Receivable, Gross			133,744	143,176	153,991
Residential Portfolio Segment [Member] | PCI loans [Member] | Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			133,744	143,176
Residential Portfolio Segment [Member] | FHA/VA government-guaranteed loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Mortgage Loans in Process of Foreclosure, Amount			39,400
Financing Receivable, Sale			235,300	233,200	235,100
Financing Receivable, Past Due			83,208	108,934
Impaired Financing Receivable, Unpaid Principal Balance			0	0
Loans and Leases Receivable, Gross			123,909	147,205
Residential Portfolio Segment [Member] | FHA/VA government-guaranteed loans [Member] | Entity Loan Modification Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring			60,100	60,500
Residential Portfolio Segment [Member] | FHA/VA government-guaranteed loans [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			123,909	147,205
Residential Portfolio Segment [Member] | FHA/VA government-guaranteed loans [Member] | Nonaccrual loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			0	0
Residential Portfolio Segment [Member] | FHA/VA government-guaranteed loans [Member] | PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			0	0
Residential Portfolio Segment [Member] | FNMA and FHLMC Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Purchase			300	100	36
Residential Portfolio Segment [Member] | FNMA and FHLMC Loans | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Sale			138,700	104,900	87,500
Residential Portfolio Segment [Member] | GNMA [Member] | Repurchase Option Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Purchase			33,500	49,100	25,100
Financing Receivable, Past Due			35,600	43,600
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Servicing Portfolio			267,600	273,400
Loans and Leases Receivable, Gross			3,786,779	3,750,202
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due			43,829	111,520
Impaired Financing Receivable, Unpaid Principal Balance			92,131	250,369
Loans and Leases Receivable, Gross			1,444,586	1,522,662	1,614,972
Commercial Portfolio Segment [Member] | Entity Loan Modification Program [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring			74,979	137,949
Commercial Portfolio Segment [Member] | Construction loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			111,317	79,429	111,397
Commercial Portfolio Segment [Member] | Construction loans [Member] | Entity Loan Modification Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring			4,300
Commercial Portfolio Segment [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			217,435	331,718
Commercial Portfolio Segment [Member] | Substandard [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			175,838	276,935
Commercial Portfolio Segment [Member] | Puerto Rico [Member] | Government [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Government Loans			57,700	61,600
Commercial Portfolio Segment [Member] | Puerto Rico [Member] | Government [Member] | Puerto Rico Electric Power Authority [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Government Loans			13,800
Commercial Portfolio Segment [Member] | Puerto Rico [Member] | Government [Member] | Municipalities Borrower [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Government Loans			43,800
Commercial Portfolio Segment [Member] | Virgin Islands [Member] | Government [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Government Loans			64,100	55,800
Commercial Portfolio Segment [Member] | Virgin Islands [Member] | Government [Member] | Public Corporations [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Government Loans			40,800
Commercial Portfolio Segment [Member] | Virgin Islands [Member] | Government [Member] | Independent Instrumentality [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial Government Loans			23,200
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due			27,724	38,001
Impaired Financing Receivable, Unpaid Principal Balance			118,122	124,112
Loans and Leases Receivable, Gross			2,230,876	2,148,111	2,083,253
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Entity Loan Modification Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring			66,849	74,921
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			29,031	45,274
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Puerto Rico [Member] | Substandard [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Sale				5,600
Commercial Portfolio Segment [Member] | Performing [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			1,363,073	1,291,772	1,457,875
Commercial Portfolio Segment [Member] | Performing [Member] | Construction loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			99,895	72,836	64,131
Commercial Portfolio Segment [Member] | Performing [Member] | Commercial And Industrial Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Purchase			20,000	21,400	52,600
Loans and Leases Receivable, Gross			2,154,343	2,056,919	1,964,953
Commercial Portfolio Segment [Member] | Performing [Member] | Commercial And Industrial Sector [Member] | Puerto Rico [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Sale			48,200
Commercial Portfolio Segment [Member] | Performing [Member] | Commercial And Industrial Sector [Member] | United States [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Sale				9,200
Commercial Portfolio Segment [Member] | Nonaccrual loans [Member] | Puerto Rico [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Sale				34,900
Commercial Portfolio Segment [Member] | Nonaccrual loans [Member] | Virgin Islands [Member] | Construction loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Sale			27,000
Commercial Portfolio Segment [Member] | Nonaccrual loans [Member] | Loans Tranferred To Held For Sale [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Sale			11,400
Commercial Portfolio Segment [Member] | PCI loans [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses PCI			371	400	378
Financing Receivable, Past Due			2,020	2,512
Loans and Leases Receivable, Gross			2,956	3,464	4,183
Commercial Portfolio Segment [Member] | PCI loans [Member] | Construction loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses PCI			0	0	0
Loans and Leases Receivable, Gross			0	0	0
Commercial Portfolio Segment [Member] | PCI loans [Member] | Commercial And Industrial Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses PCI			0	0	0
Loans and Leases Receivable, Gross			0	0	0
Consumer Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			2,281,653	1,944,713	1,749,897
Consumer Portfolio Segment [Member] | Entity Loan Modification Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring			25,200
Consumer Portfolio Segment [Member] | Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due			28,144	26,057
Impaired Financing Receivable, Unpaid Principal Balance			12,423	12,816
Loans and Leases Receivable, Gross			732,266	664,701
Consumer Portfolio Segment [Member] | Other Loans [Member] | Entity Loan Modification Program [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Troubled Debt Restructuring			9,127	10,382
Consumer Portfolio Segment [Member] | Performing [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			2,256,233	1,913,387	1,711,503
Consumer Portfolio Segment [Member] | Performing [Member] | Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			725,211	656,836
Consumer Portfolio Segment [Member] | Nonaccrual loans [Member] | Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			7,055	7,865
Consumer Portfolio Segment [Member] | PCI loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Allowance for Loan Losses PCI			0	0	0
Loans and Leases Receivable, Gross			0	0	$ 0
Consumer Portfolio Segment [Member] | PCI loans [Member] | Other Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross			0	0
Origination Fees [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Deferred Income			9,200	5,600
Unearned Income [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Deferred Income			$ 63,800	$ 51,300

LOANS HELD FOR INVESTMENT - Act

LOANS HELD FOR INVESTMENT - Activity for Impaired Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Impaired Loans:
Balance at beginning of period	$ 760,269	$ 790,308	$ 887,905
Loans determined impaired during the period	52,639	250,524	140,977
Charge-offs	(37,806)	(57,152)	(82,113)
Impaired Loans sold, net of charge-offs	0	(4,121)	(53,245)
Increases to existing impaired loans	1,928	7,335	8,292
Foreclosures	(25,310)	(36,453)	(37,513)
Loans no longer considered impaired	(3,355)	(5,417)	(3,526)
Impaired Loans Transferred from (to) Held For Sale	0	(74,052)	0
Paid in full, partial payments and other	(179,193)	(110,703)	(70,469)
Balance at end of period	$ 569,172	$ 760,269	$ 790,308

LOANS HELD FOR INVESTMENT - A_2

LOANS HELD FOR INVESTMENT - Activity for Impaired Loans (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable Impaired [Line Items]
Transfer of Portfolio Loans and Leases to Held-for-sale	$ 24,470	$ 90,319	$ 0
Impaired Financing Receivable Paid Or Partial Payments	179,193	110,703	70,469
Charge-offs	(97,587)	(116,792)	(134,770)
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Impaired [Line Items]
Charge-offs	$ (15,088)	(23,911)	(39,092)
Puerto Rico Electric Power Authority [Member]
Financing Receivable Impaired [Line Items]
Charge-offs			(10,700)
Puerto Rico Electric Power Authority [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Decrease due to loans sold			$ (64,000)
Nonperforming Financial Instruments [Member]
Financing Receivable Impaired [Line Items]
Disposal Group, Not Discontinued Operation, Loss (Gain) on Write-down		22,200
Transfer of Portfolio Loans and Leases to Held-for-sale		$ 74,400

LOANS HELD FOR INVESTMENT - Car

LOANS HELD FOR INVESTMENT - Carrying Value of Purchased Credit Impaired Loans (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable Impaired [Line Items]
Loans and Leases Receivable, Gross	$ 9,002,205	$ 8,858,123	$ 8,850,476
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable Impaired [Line Items]
Loans and Leases Receivable, Gross	136,700	146,640	158,174
Allowance for loan losses purchased credit impaired	(11,434)	(11,354)	(11,251)
Purchased Credit Impaired Loans, Net	125,266	135,286
Residential Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Loans and Leases Receivable, Gross	2,933,773	3,163,208	3,290,957
Residential Portfolio Segment [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable Impaired [Line Items]
Loans and Leases Receivable, Gross	133,744	143,176	153,991
Allowance for loan losses purchased credit impaired	(11,063)	(10,954)	(10,873)
Commercial Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Loans and Leases Receivable, Gross	3,786,779	3,750,202
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Impaired [Line Items]
Loans and Leases Receivable, Gross	1,444,586	1,522,662	1,614,972
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable Impaired [Line Items]
Loans and Leases Receivable, Gross	2,956	3,464	4,183
Allowance for loan losses purchased credit impaired	$ (371)	$ (400)	$ (378)

LOANS HELD FOR INVESTMENT - C_5

LOANS HELD FOR INVESTMENT - Corporation's Aging of Purchased Credit Impaired Loans (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	$ 473,810,000	$ 574,654,000
Financing Receivable Recorded Investment Current	8,391,695,000	8,136,829,000
Loans and Leases Receivable, Gross	9,002,205,000	8,858,123,000	$ 8,850,476,000
Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	34,568,000	36,423,000
Financing Receivable Recorded Investment Current	102,132,000	110,217,000
Loans and Leases Receivable, Gross	136,700,000	146,640,000	158,174,000
Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	55,640,000	49,020,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	99,498,000	80,578,000
Financing Receivables, 60 to 89 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	7,530,000	6,979,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	318,672,000	445,056,000
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	27,038,000	29,444,000
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	2,933,773,000	3,163,208,000	3,290,957,000
Residential Portfolio Segment [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	32,548,000	33,911,000
Financing Receivable Recorded Investment Current	101,196,000	109,265,000
Loans and Leases Receivable, Gross	133,744,000	143,176,000	153,991,000
Residential Portfolio Segment [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
Loans and Leases Receivable, Gross	11,200,000	11,600,000
Residential Portfolio Segment [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	7,530,000	6,979,000
Residential Portfolio Segment [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	25,018,000	26,932,000
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	3,786,779,000	3,750,202,000
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	43,829,000	111,520,000
Financing Receivable Recorded Investment Current	1,397,801,000	1,407,678,000
Loans and Leases Receivable, Gross	1,444,586,000	1,522,662,000	1,614,972,000
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	2,020,000	2,512,000
Financing Receivable Recorded Investment Current	936,000	952,000
Loans and Leases Receivable, Gross	2,956,000	3,464,000	$ 4,183,000
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financing Receivables, 30 to 59 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
Loans and Leases Receivable, Gross	6,600,000	5,100,000
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
Loans and Leases Receivable, Gross	0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financing Receivables, 60 to 89 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	3,551,000	1,038,000
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financing Receivables, 60 to 89 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	0	0
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	40,278,000	110,482,000
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Past Due	$ 2,020,000	$ 2,512,000

LOANS HELD FOR INVESTMENT - C_6

LOANS HELD FOR INVESTMENT - Corporation's Aging of Purchased Credit Impaired Loans (Parenthetical) (Detail) - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 9,002,205,000	$ 8,858,123,000	$ 8,850,476,000
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	2,933,773,000	3,163,208,000	3,290,957,000
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	3,786,779,000	3,750,202,000
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	1,444,586,000	1,522,662,000	1,614,972,000
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	6,600,000	5,100,000
Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	136,700,000	146,640,000	158,174,000
Financial Asset Acquired with Credit Deterioration [Member] | Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	133,744,000	143,176,000	153,991,000
Financial Asset Acquired with Credit Deterioration [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	2,956,000	3,464,000	$ 4,183,000
Financial Asset Acquired with Credit Deterioration [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	11,200,000	$ 11,600,000
Financial Asset Acquired with Credit Deterioration [Member] | Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Gross	$ 0

LOANS HELD FOR INVESTMENT - Cha

LOANS HELD FOR INVESTMENT - Change in Accretable Yield of Purchased Credit Impaired Loans (Detail) - Financial Asset Acquired with Credit Deterioration [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]
Balance at beginning of year	$ 93,493	$ 103,682	$ 116,462
Accretion recognized in earnings	(9,370)	(10,189)	(10,810)
Reclassification (to) from non-accretable	0	0	(1,970)
Balance at end of period	$ 84,123	$ 93,493	$ 103,682

LOANS HELD FOR INVESTMENT - C_7

LOANS HELD FOR INVESTMENT - Changes in Carrying Amount Of Purchased Credit Impaired Loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable Impaired [Line Items]
Beggining balance of period	$ 8,858,123	$ 8,850,476
Ending balance	9,002,205	8,858,123	$ 8,850,476
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable Impaired [Line Items]
Beggining balance of period	146,640	158,174
Accretion	9,370	10,189	10,810
Collections	(15,645)	(16,749)
Foreclosures	(3,665)	(4,974)
Ending balance	136,700	146,640	158,174
Allowance for loan losses purchased credit impaired	(11,434)	(11,354)	$ (11,251)
Ending balance: purchased credit-impaired loans	$ 125,266	$ 135,286

LOANS HELD FOR INVESTMENT - C_8

LOANS HELD FOR INVESTMENT - Changes in the allowance for loan losses related to purchased credit impaired doans (Detail) - Financial Asset Acquired with Credit Deterioration [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Beginning balance: purchased credit-impaired loans	$ 11,354	$ 11,251
Provsion of PCI Loans	80	103
Ending balance: purchased credit-impaired loans	$ 11,434	$ 11,354

LOANS HELD FOR INVESTMENT - Sel

LOANS HELD FOR INVESTMENT - Selected Information on TDRs includes Recorded Investment by Loan Class and Modification Type (Detail) - Entity Loan Modification Program [Member] - USD ($)	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 487,997,000	$ 582,647,000	$ 587,219,000	$ 647,048,000
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	66,849,000	74,921,000
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	74,979,000	137,949,000
Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	25,200,000
Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	316,649,000	333,902,000
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	9,127,000	10,382,000
Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	4,300,000
Construction loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	514,000	762,000
Construction loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Construction loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	3,807,000	4,765,000
Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	14,540,000	18,031,000
Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,532,000	1,935,000
Interest rate below market [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	26,068,000	28,771,000
Interest rate below market [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	579,000	664,000
Interest rate below market [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	3,810,000	3,966,000
Interest rate below market [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	19,570,000	22,729,000
Interest rate below market [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,085,000	1,396,000
Interest rate below market [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Interest rate below market [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Interest rate below market [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	24,000	16,000
Interest rate below market [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Interest rate below market [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Maturity or term extension [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	34,682,000	39,283,000
Maturity or term extension [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	16,160,000	19,769,000
Maturity or term extension [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	2,276,000	2,005,000
Maturity or term extension [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	11,600,000	11,586,000
Maturity or term extension [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,239,000	1,236,000
Maturity or term extension [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	514,000	545,000
Maturity or term extension [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Maturity or term extension [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,955,000	2,524,000
Maturity or term extension [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	898,000	1,517,000
Maturity or term extension [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	40,000	101,000
Combination of reduction in interest rateand extension of maturity [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	289,303,000	394,235,000
Combination of reduction in interest rateand extension of maturity [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	12,077,000	13,323,000
Combination of reduction in interest rateand extension of maturity [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	40,896,000	122,709,000
Combination of reduction in interest rateand extension of maturity [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	221,667,000	239,348,000
Combination of reduction in interest rateand extension of maturity [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	4,565,000	5,651,000
Combination of reduction in interest rateand extension of maturity [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Combination of reduction in interest rateand extension of maturity [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Combination of reduction in interest rateand extension of maturity [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,639,000	1,933,000
Combination of reduction in interest rateand extension of maturity [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	7,393,000	10,085,000
Combination of reduction in interest rateand extension of maturity [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,066,000	1,186,000
Forgiveness of principal and/or interest [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	346,000	275,000
Forgiveness of principal and/or interest [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	142,000	0
Forgiveness of principal and/or interest [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forgiveness of principal and/or interest [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forgiveness of principal and/or interest [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	204,000	275,000
Forgiveness of principal and/or interest [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forgiveness of principal and/or interest [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forgiveness of principal and/or interest [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forgiveness of principal and/or interest [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forgiveness of principal and/or interest [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forbearance Agreement [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	20,682,000	2,818,000
Forbearance Agreement [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	692,000	2,673,000
Forbearance Agreement [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	19,848,000	0
Forbearance Agreement [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	142,000	145,000
Forbearance Agreement [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forbearance Agreement [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forbearance Agreement [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forbearance Agreement [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forbearance Agreement [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Forbearance Agreement [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Other Loan Modifications [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	116,916,000	117,265,000
Other Loan Modifications [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	37,199,000	38,492,000
Other Loan Modifications [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	8,149,000	9,269,000
Other Loan Modifications [Member] | Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	63,670,000	60,094,000
Other Loan Modifications [Member] | Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	1,034,000	1,824,000
Other Loan Modifications [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	217,000
Other Loan Modifications [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	0	0
Other Loan Modifications [Member] | Construction loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	189,000	292,000
Other Loan Modifications [Member] | Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	6,249,000	6,429,000
Other Loan Modifications [Member] | Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	$ 426,000	$ 648,000

LOANS HELD FOR INVESTMENT - S_2

LOANS HELD FOR INVESTMENT - Selected Information on TDRs Includes Recorded Investment by Loan Class and Modification Type (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net	$ 39,477	$ 43,186
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net	0	1,725
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net	$ 0	11,371
Nonperforming Financial Instruments [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		16,100
Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		1,700
Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		11,400
Entity Loan Modification Program [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		900
Entity Loan Modification Program [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		11,100
Entity Loan Modification Program [Member] | Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		900
Entity Loan Modification Program [Member] | Nonperforming Financial Instruments [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		$ 11,100

LOANS HELD FOR INVESTMENT - C_9

LOANS HELD FOR INVESTMENT - Corporation's TDR Activity (Detail) - Entity Loan Modification Program [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable Modifications [Line Items]
Beginning Balance of TDRs	$ 582,647	$ 587,219	$ 647,048
New TDRs	63,433	171,857	93,837
Increases to existing TDRs (disbursements)	1,840	7,027	6,575
Charge-offs post modification	(10,342)	(27,951)	(32,963)
Sales, net of charge-offs	0	0	(53,245)
Foreclosures	(12,872)	(21,591)	(25,059)
TDRs transferred from (to) held for sale	0	(34,541)	0
Paid-off and partial payments	(136,709)	(99,373)	(48,974)
Ending balance of TDRs	$ 487,997	$ 582,647	$ 587,219

LOANS HELD FOR INVESTMENT - _10

LOANS HELD FOR INVESTMENT - Corporation's TDR Activity (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable Modifications [Line Items]
Loans held for investment transferred to held for sale	$ 24,470	$ 90,319	$ 0
Charge-off	97,587	116,792	134,770
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Charge-off	15,088	23,911	39,092
Puerto Rico Electric Power Authority [Member]
Financing Receivable Modifications [Line Items]
Charge-off			10,700
Nonperforming Financial Instruments [Member]
Financing Receivable Modifications [Line Items]
Charge Offs Loans Held For Sale		22,200
Loans held for investment transferred to held for sale		74,400
Nonperforming Financial Instruments [Member] | Loans Tranferred To Held For Sale [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Charge Offs Loans Held For Sale		22,200
Loans held for investment transferred to held for sale		74,400
Nonperforming Financial Instruments [Member] | Loans Tranferred To Held For Sale [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Charge Offs Loans Held For Sale		13,800
Loans held for investment transferred to held for sale		39,600
TDR
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Troubled Debt Restructurings Paid Or Partial Paid	136,709	99,373	48,974
TDR | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Charge Offs Loans Held For Sale		8,500
Loans held for investment transferred to held for sale		$ 34,500
TDR | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Troubled Debt Restructurings Paid Or Partial Paid	$ 92,400
TDR | Puerto Rico Electric Power Authority [Member]
Financing Receivable Modifications [Line Items]
Charge-off			$ 10,700

LOANS HELD FOR INVESTMENT - Bre

LOANS HELD FOR INVESTMENT - Breakdown Between Accrual and Nonaccrual Status of TDRs (Detail) - TDR - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Recorded Investment Accrual Status	$ 398,257	$ 478,928
Financing Receivable Modifications Recorded Investment Nonaccrual Status	89,740	103,719
Financing Receivable, Modifications, Recorded Investment	487,997	582,647	$ 587,219	$ 647,048
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Recorded Investment Accrual Status	59,689	66,603
Financing Receivable Modifications Recorded Investment Nonaccrual Status	7,160	8,318
Financing Receivable, Modifications, Recorded Investment	66,849	74,921
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Recorded Investment Accrual Status	51,062	116,830
Financing Receivable Modifications Recorded Investment Nonaccrual Status	23,917	21,119
Financing Receivable, Modifications, Recorded Investment	74,979	137,949
Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	25,200
Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Recorded Investment Accrual Status	265,746	271,766
Financing Receivable Modifications Recorded Investment Nonaccrual Status	50,903	62,136
Financing Receivable, Modifications, Recorded Investment	316,649	333,902
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Recorded Investment Accrual Status	8,464	9,025
Financing Receivable Modifications Recorded Investment Nonaccrual Status	663	1,357
Financing Receivable, Modifications, Recorded Investment	9,127	10,382
Construction loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable, Modifications, Recorded Investment	4,300
Construction loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Recorded Investment Accrual Status	514	0
Financing Receivable Modifications Recorded Investment Nonaccrual Status	0	762
Financing Receivable, Modifications, Recorded Investment	514	762
Construction loans [Member] | Commercial Portfolio Segment [Member] | Commercial loan [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Recorded Investment Accrual Status	0	0
Financing Receivable Modifications Recorded Investment Nonaccrual Status	0	0
Financing Receivable, Modifications, Recorded Investment	0	0
Construction loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Recorded Investment Accrual Status	2,724	1,071
Financing Receivable Modifications Recorded Investment Nonaccrual Status	1,083	3,694
Financing Receivable, Modifications, Recorded Investment	3,807	4,765
Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Recorded Investment Accrual Status	8,556	11,842
Financing Receivable Modifications Recorded Investment Nonaccrual Status	5,984	6,189
Financing Receivable, Modifications, Recorded Investment	14,540	18,031
Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Financing Receivable Modifications Recorded Investment Accrual Status	1,502	1,791
Financing Receivable Modifications Recorded Investment Nonaccrual Status	30	144
Financing Receivable, Modifications, Recorded Investment	$ 1,532	$ 1,935

LOANS HELD FOR INVESTMENT - B_2

LOANS HELD FOR INVESTMENT - Breakdown Between Accrual and Nonaccrual Status of TDRs (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net	$ 39,477	$ 43,186
Nonperforming Financial Instruments [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		16,100
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net	0	1,725
Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		1,700
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net	0	11,371
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		11,400
TDR
Financing Receivable Modifications [Line Items]
Financing receivable modifications recorded investment of loan forced to nonaccrual status	$ 14,800	17,700
TDR | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		900
TDR | Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		900
TDR | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		11,100
TDR | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable Modifications [Line Items]
Loans Receivable Held For Sale Net		$ 11,100

LOANS HELD FOR INVESTMENT - L_5

LOANS HELD FOR INVESTMENT - Loan Modifications are Considered TDRs (Detail) - TDR $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)numberofcontracts	Dec. 31, 2018USD ($)numberofcontracts	Dec. 31, 2017USD ($)numberofcontracts
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	1,309	1,228	1,275
Pre-modification Outstanding Recorded Investment	$ 66,184	$ 173,082	$ 94,796
Post-Modification Outstanding Recorded Investment	$ 63,433	$ 171,857	$ 93,837
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	14	10	21
Pre-modification Outstanding Recorded Investment	$ 1,754	$ 9,141	$ 39,428
Post-Modification Outstanding Recorded Investment	$ 1,750	$ 8,786	$ 39,338
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	13	11	13
Pre-modification Outstanding Recorded Investment	$ 40,988	$ 138,994	$ 25,722
Post-Modification Outstanding Recorded Investment	$ 38,750	$ 138,785	$ 25,018
Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	118	104	132
Pre-modification Outstanding Recorded Investment	$ 14,606	$ 14,827	$ 19,484
Post-Modification Outstanding Recorded Investment	$ 14,084	$ 14,159	$ 19,263
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	862	768	657
Pre-modification Outstanding Recorded Investment	$ 3,713	$ 3,935	$ 3,041
Post-Modification Outstanding Recorded Investment	$ 3,777	$ 3,996	$ 3,094
Construction loans [Member] | Commercial Portfolio Segment [Member] | Residential Mortgage [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	0	1	0
Pre-modification Outstanding Recorded Investment	$ 0	$ 587	$ 0
Post-Modification Outstanding Recorded Investment	$ 0	$ 558	$ 0
Construction loans [Member] | Commercial Portfolio Segment [Member] | Land [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	4	1	4
Pre-modification Outstanding Recorded Investment	$ 118	$ 97	$ 122
Post-Modification Outstanding Recorded Investment	$ 117	$ 97	$ 125
Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	256	285	426
Pre-modification Outstanding Recorded Investment	$ 4,201	$ 4,500	$ 6,451
Post-Modification Outstanding Recorded Investment	$ 4,154	$ 4,489	$ 6,451
Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	42	48	22
Pre-modification Outstanding Recorded Investment	$ 804	$ 1,001	$ 548
Post-Modification Outstanding Recorded Investment	$ 801	$ 987	$ 548

LOANS HELD FOR INVESTMENT - L_6

LOANS HELD FOR INVESTMENT - Loan Modifications Considered Troubled Debt Restructurings Defaulted (Detail) - TDR $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)numberofcontracts	Dec. 31, 2018USD ($)numberofcontracts	Dec. 31, 2017USD ($)numberofcontracts
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	220	134	161
Recorded investment | $	$ 4,501	$ 3,225	$ 6,045
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	0	0	1
Recorded investment | $	$ 0	$ 0	$ 57
Other Loans [Member] | Residential Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	11	15	46
Recorded investment | $	$ 2,019	$ 1,994	$ 5,355
Other Loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	78	56	99
Recorded investment | $	$ 247	$ 206	$ 387
Auto loans [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	130	62	14
Recorded investment | $	$ 2,221	$ 1,003	$ 207
Finance Leases [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Modifications [Line Items]
Number of contracts | numberofcontracts	1	1	1
Recorded investment | $	$ 14	$ 22	$ 39

LOANS HELD FOR INVESTMENT - L_7

LOANS HELD FOR INVESTMENT - Loan Restructuring and Effect on Allowance for Loan and Lease Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Loans and Leases Receivable Disclosure [Abstract]
Beginning balance	$ 196,362	$ 231,843	$ 205,603
Provision for loan and lease losses	40,225	59,253	144,254
Ending balance	155,139	196,362	231,843
Entity Loan Modification Program [Member]
Financing Receivable, Troubled Debt Restructuring [Abstract]
Beginning Balance of TDRs	582,647	587,219	647,048
New TDRs loan splits	63,433	171,857	93,837
Paid-off and partial payments	(136,709)	(99,373)	(48,974)
Ending balance of TDRs	487,997	582,647	587,219
Entity Loan Modification Program [Member] | AB Note Restructure Workout Strategy [Member]
Financing Receivable, Troubled Debt Restructuring [Abstract]
Beginning Balance of TDRs	33,840	35,577	36,971
New TDRs loan splits	20,059	32,104	0
Paid-off and partial payments	(2,671)	(33,841)	(1,394)
Ending balance of TDRs	51,228	33,840	35,577
Loans and Leases Receivable Disclosure [Abstract]
Beginning balance	473	3,846	5,141
Provision for loan and lease losses	3,057	(10,789)	(1,295)
Net loan loss recoveries	0	7,416	0
Ending balance	$ 3,530	$ 473	$ 3,846

ALLOWANCE FOR LOAN AND LEASE _3

ALLOWANCE FOR LOAN AND LEASE LOSSES - Changes in Allowance for Loan and Lease Losses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	$ 196,362	$ 231,843	$ 205,603
Charge-offs	(97,587)	(116,792)	(134,770)
Recoveries	16,139	22,058	16,756
Provision (release)	40,225	59,253	144,254
Ending balance	155,139	196,362	231,843
Ending balance: specific reserve for impaired loans	36,115	53,976	51,410
Ending balance	9,002,205	8,858,123	8,850,476
Ending balance: impaired loans	569,172	760,269	790,308	$ 887,905
General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	131,032	169,182
Ending balance	107,590	131,032	169,182
Ending balance	8,296,333	7,951,214	7,901,994
PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance: purchased credit-impaired loans	11,434	11,354	11,251
Ending balance	136,700	146,640	158,174
Residential Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	50,794	58,975	33,980
Charge-offs	(22,742)	(24,775)	(28,186)
Recoveries	2,663	3,392	2,437
Provision (release)	14,091	13,202	50,744
Ending balance	44,806	50,794	58,975
Ending balance: specific reserve for impaired loans	17,037	19,965	22,086
Ending balance	2,933,773	3,163,208	3,290,957
Ending balance: impaired loans	377,240	403,732	433,434
Residential Portfolio Segment [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	19,875	26,016
Ending balance	16,706	19,875	26,016
Ending balance	2,422,789	2,616,300	2,703,532
Residential Portfolio Segment [Member] | PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance: purchased credit-impaired loans	11,063	10,954	10,873
Ending balance	133,744	143,176	153,991
Commercial Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance	3,786,779	3,750,202
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	55,581	48,493	57,261
Charge-offs	(15,088)	(23,911)	(39,092)
Recoveries	398	7,925	270
Provision (release)	(1,697)	23,074	30,054
Ending balance	39,194	55,581	48,493
Ending balance: specific reserve for impaired loans	6,788	17,684	9,783
Ending balance	1,444,586	1,522,662	1,614,972
Ending balance: impaired loans	78,557	227,426	152,914
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	37,497	38,332
Ending balance	32,035	37,497	38,332
Ending balance	1,363,073	1,291,772	1,457,875
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance: purchased credit-impaired loans	371	400	378
Ending balance	2,956	3,464	4,183
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	32,546	48,871	61,953
Charge-offs	(7,206)	(9,704)	(19,855)
Recoveries	3,554	1,819	5,755
Provision (release)	(13,696)	(8,440)	1,018
Ending balance	15,198	32,546	48,871
Ending balance: specific reserve for impaired loans	7,123	9,693	12,359
Ending balance	2,230,876	2,148,111	2,083,253
Ending balance: impaired loans	76,533	91,192	118,300
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	22,853	36,512
Ending balance	8,075	22,853	36,512
Ending balance	2,154,343	2,056,919	1,964,953
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance: purchased credit-impaired loans	0	0	0
Ending balance	0	0	0
Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	53,849	70,982	49,847
Charge-offs	(52,160)	(50,106)	(44,030)
Recoveries	8,859	8,588	7,562
Provision (release)	43,023	24,385	57,603
Ending balance	53,571	53,849	70,982
Ending balance: specific reserve for impaired loans	4,347	5,874	5,165
Ending balance	2,281,653	1,944,713	1,749,897
Ending balance: impaired loans	25,420	31,326	38,394
Consumer Portfolio Segment [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	47,975	65,817
Ending balance	49,224	47,975	65,817
Ending balance	2,256,233	1,913,387	1,711,503
Consumer Portfolio Segment [Member] | PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance: purchased credit-impaired loans	0	0	0
Ending balance	0	0	0
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	3,592	4,522	2,562
Charge-offs	(391)	(8,296)	(3,607)
Recoveries	665	334	732
Provision (release)	(1,496)	7,032	4,835
Ending balance	2,370	3,592	4,522
Ending balance: specific reserve for impaired loans	820	760	2,017
Ending balance	111,317	79,429	111,397
Ending balance: impaired loans	11,422	6,593	47,266
Construction Loans [Member] | Commercial Portfolio Segment [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Beginning balance	2,832	2,505
Ending balance	1,550	2,832	2,505
Ending balance	99,895	72,836	64,131
Construction Loans [Member] | Commercial Portfolio Segment [Member] | PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Ending balance: purchased credit-impaired loans	0	0	0
Ending balance	$ 0	$ 0	$ 0

ALLOWANCE FOR LOAN AND LEASE _4

ALLOWANCE FOR LOAN AND LEASE LOSSES - Changes in Allowance for Loan and Lease Losses (Parenthetical) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable Allowance For Credit Losses [Line Items]
Loans held for investment transferred to held for sale	$ 24,470	$ 90,319	$ 0
Nonperforming Financial Instruments [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans held for investment transferred to held for sale		74,400
Charge Offs Loans Held For Sale		22,200
Nonperforming Financial Instruments [Member] | Loans Tranferred To Held For Sale [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans held for investment transferred to held for sale		74,400
Charge Offs Loans Held For Sale		22,200
Charge Offs Loans Held For Sale Previously Established Reserve		6,500
Provision Loans Transferred To Held For Sale		15,700
Nonperforming Financial Instruments [Member] | Loans Tranferred To Held For Sale [Member] | Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans held for investment transferred to held for sale		1,800
Charge Offs Loans Held For Sale		1,700
Nonperforming Financial Instruments [Member] | Loans Tranferred To Held For Sale [Member] | Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans held for investment transferred to held for sale		39,600
Charge Offs Loans Held For Sale		13,800
Nonperforming Financial Instruments [Member] | Loans Tranferred To Held For Sale [Member] | Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans held for investment transferred to held for sale		33,000
Charge Offs Loans Held For Sale		$ 6,700

ALLOWANCE FOR LOAN AND LEASE _5

ALLOWANCE FOR LOAN AND LEASE LOSSES - Carrying Amount of Portfolios (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Financing Receivable Allowance For Credit Losses [Line Items]
Impaired Financing Receivable With No Related Allowance Recorded Investment	$ 187,312	$ 188,397
Impaired Financing Receivable With Related Allowance Recorded Investment	381,860	571,872
Impaired Financing Receivable, Related Allowance	36,115	53,976	$ 51,410
Loans and Leases Receivable, Gross	9,002,205	8,858,123	8,850,476
Loans And Leases Receivable Allowance	$ 155,139	$ 196,362	231,843	$ 205,603
Allowance for loan and lease losses, numerator [Member] | Impaired Accounts Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	9.46%	9.44%
Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	1.72%	2.22%
PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 136,700	$ 146,640	158,174
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	$ 11,434	$ 11,354	11,251
PCI loans [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	8.36%	7.74%
General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 8,296,333	$ 7,951,214	7,901,994
Loans And Leases Receivable Allowance	$ 107,590	$ 131,032	169,182
General Allowance [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	1.30%	1.65%
Residenital Mortgage Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Impaired Financing Receivable With No Related Allowance Recorded Investment	$ 111,960	$ 110,238
Impaired Financing Receivable With Related Allowance Recorded Investment	265,280	293,494
Impaired Financing Receivable, Related Allowance	17,037	19,965	22,086
Loans and Leases Receivable, Gross	2,933,773	3,163,208	3,290,957
Loans And Leases Receivable Allowance	$ 44,806	$ 50,794	58,975	33,980
Residenital Mortgage Loans [Member] | Allowance for loan and lease losses, numerator [Member] | Impaired Accounts Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	6.42%	6.80%
Residenital Mortgage Loans [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	1.53%	1.61%
Residenital Mortgage Loans [Member] | PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 133,744	$ 143,176	153,991
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	$ 11,063	$ 10,954	10,873
Residenital Mortgage Loans [Member] | PCI loans [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	8.27%	7.65%
Residenital Mortgage Loans [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 2,422,789	$ 2,616,300	2,703,532
Loans And Leases Receivable Allowance	$ 16,706	$ 19,875	26,016
Residenital Mortgage Loans [Member] | General Allowance [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	0.69%	0.76%
Commercial Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 3,786,779	$ 3,750,202
Commercial Portfolio Segment [Member] | Construction Loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Impaired Financing Receivable With No Related Allowance Recorded Investment	2,839	2,431
Impaired Financing Receivable With Related Allowance Recorded Investment	8,583	4,162
Impaired Financing Receivable, Related Allowance	820	760	2,017
Loans and Leases Receivable, Gross	111,317	79,429	111,397
Loans And Leases Receivable Allowance	$ 2,370	$ 3,592	4,522	2,562
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Allowance for loan and lease losses, numerator [Member] | Impaired Accounts Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	9.55%	18.26%
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	2.13%	4.52%
Commercial Portfolio Segment [Member] | Construction Loans [Member] | PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 0	$ 0	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	$ 0	$ 0	0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | PCI loans [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	0.00%	0.00%
Commercial Portfolio Segment [Member] | Construction Loans [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 99,895	$ 72,836	64,131
Loans And Leases Receivable Allowance	$ 1,550	$ 2,832	2,505
Commercial Portfolio Segment [Member] | Construction Loans [Member] | General Allowance [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	1.55%	3.89%
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Impaired Financing Receivable With No Related Allowance Recorded Investment	$ 27,209	$ 30,030
Impaired Financing Receivable With Related Allowance Recorded Investment	49,324	61,162
Impaired Financing Receivable, Related Allowance	7,123	9,693	12,359
Loans and Leases Receivable, Gross	2,230,876	2,148,111	2,083,253
Loans And Leases Receivable Allowance	$ 15,198	$ 32,546	48,871	61,953
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Allowance for loan and lease losses, numerator [Member] | Impaired Accounts Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	14.44%	15.85%
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	0.68%	1.52%
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 0	$ 0	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	$ 0	$ 0	0
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | PCI loans [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	0.00%	0.00%
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 2,154,343	$ 2,056,919	1,964,953
Loans And Leases Receivable Allowance	$ 8,075	$ 22,853	36,512
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | General Allowance [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	0.37%	1.11%
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Impaired Financing Receivable With No Related Allowance Recorded Investment	$ 44,120	$ 43,358
Impaired Financing Receivable With Related Allowance Recorded Investment	34,437	184,068
Impaired Financing Receivable, Related Allowance	6,788	17,684	9,783
Loans and Leases Receivable, Gross	1,444,586	1,522,662	1,614,972
Loans And Leases Receivable Allowance	$ 39,194	$ 55,581	48,493	57,261
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Allowance for loan and lease losses, numerator [Member] | Impaired Accounts Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	19.71%	9.61%
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	2.71%	3.65%
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 2,956	$ 3,464	4,183
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	$ 371	$ 400	378
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | PCI loans [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	12.55%	11.55%
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 1,363,073	$ 1,291,772	1,457,875
Loans And Leases Receivable Allowance	$ 32,035	$ 37,497	38,332
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | General Allowance [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	2.35%	2.90%
Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Impaired Financing Receivable With No Related Allowance Recorded Investment	$ 1,184	$ 2,340
Impaired Financing Receivable With Related Allowance Recorded Investment	24,236	28,986
Impaired Financing Receivable, Related Allowance	4,347	5,874	5,165
Loans and Leases Receivable, Gross	2,281,653	1,944,713	1,749,897
Loans And Leases Receivable Allowance	$ 53,571	$ 53,849	70,982	$ 49,847
Consumer Portfolio Segment [Member] | Allowance for loan and lease losses, numerator [Member] | Impaired Accounts Receivable [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	17.94%	20.26%
Consumer Portfolio Segment [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	2.35%	2.77%
Consumer Portfolio Segment [Member] | PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 0	$ 0	0
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Allowance for Loan Losses	$ 0	$ 0	0
Consumer Portfolio Segment [Member] | PCI loans [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	0.00%	0.00%
Consumer Portfolio Segment [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 2,256,233	$ 1,913,387	1,711,503
Loans And Leases Receivable Allowance	$ 49,224	$ 47,975	$ 65,817
Consumer Portfolio Segment [Member] | General Allowance [Member] | Allowance for loan and lease losses, numerator [Member] | Principal balance, denominator [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Allowance for loan and lease losses to principal balance	2.18%	2.51%

ALLOWANCE FOR LOAN AND LEASE _6

ALLOWANCE FOR LOAN AND LEASE LOSSES - Carrying Amount of Portfolios (Parenthetical) (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 9,002,205	$ 8,858,123	$ 8,850,476
PCI loans [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Loans and Leases Receivable, Gross	$ 136,700	$ 146,640	$ 158,174

ALLOWANCE FOR LOAN AND LEASE _7

ALLOWANCE FOR LOAN AND LEASE LOSSES - Additional Information (Detail) - USD ($)	3 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable Allowance For Credit Losses [Line Items]
Provision (release)		$ 40,225,000	$ 59,253,000	$ 144,254,000
Charge-off		97,587,000	116,792,000	134,770,000
Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Provision (release)		43,023,000	24,385,000	57,603,000
Charge-off		52,160,000	50,106,000	44,030,000
Hurricane [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Provision (release)	$ 66,500,000	(6,400,000)	(16,900,000)
Hurricane [Member] | Commercial Portfolio Segment [Member] | General Allowance [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Special Event Qualitative Resrve Transferred To General Allowance		5,700,000
Hurricane [Member] | Consumer Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Charge-off			10,900,000
Unfunded Loan Commitment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Financing Receivable Allowance For Credit Losses		0	400,000
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Allowance For Credit Losses [Line Items]
Provision (release)		(1,496,000)	7,032,000	4,835,000
Charge-off		$ 391,000	$ 8,296,000	$ 3,607,000

LOANS HELD FOR SALE - Portfolio

LOANS HELD FOR SALE - Portfolio of Loans Held for Sale (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	$ 39,477	$ 43,186
Residential Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	39,477	27,075
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	0	11,371
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	0	1,725
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	$ 0	$ 3,015

LOANS HELD FOR SALE - Portfol_2

LOANS HELD FOR SALE - Portfolio of Loans Held For Sale Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	$ 39,477	$ 43,186
Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net		16,100
Nonperforming Financial Instruments [Member] | Loans held for sale sold [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale sold	11,400
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	0	11,371
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net		11,400
Commercial Portfolio Segment [Member] | Mortgage Receivable [Member] | Nonperforming Financial Instruments [Member] | Loans held for sale sold [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale sold	10,400
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	0	1,725
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Nonperforming Financial Instruments [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net		1,700
Commercial Portfolio Segment [Member] | Commercial And Industrial Sector [Member] | Nonperforming Financial Instruments [Member] | Loans held for sale sold [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for sale sold	1,100
Construction Loans [Member] | Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable Held For Sale Net	$ 0	$ 3,015

OTHER REAL ESTATE OWNED- Other

OTHER REAL ESTATE OWNED- Other real estate owned (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other Real Estate And Foreclosed Assets [Line Items]
OREO	$ 101,626	$ 131,402
Other Real Estate Owned [Member]
Other Real Estate And Foreclosed Assets [Line Items]
OREO	101,626	131,402
Other Real Estate Owned [Member] | Residential [Member]
Other Real Estate And Foreclosed Assets [Line Items]
OREO	46,912	49,239
Other Real Estate Owned [Member] | Commercial [Member]
Other Real Estate And Foreclosed Assets [Line Items]
OREO	47,271	71,838
Other Real Estate Owned [Member] | Commercial [Member] | Construction [Member]
Other Real Estate And Foreclosed Assets [Line Items]
OREO	$ 7,443	$ 10,325

OTHER REAL ESTATE OWNED- Additi

OTHER REAL ESTATE OWNED- Additional information (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Real Estate Properties [Line Items]
Foreclosures that meet the conditions of ASC Topic 310-40	$ 213,513	$ 171,066
Other Real Estate Owned [Member]
Real Estate Properties [Line Items]
Foreclosures that meet the conditions of ASC Topic 310-40	$ 16,700	$ 14,400

RELATED PARTY TRANSACTIONS- Mov

RELATED PARTY TRANSACTIONS- Movement and balance of these loans (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Related Party Transactions [Abstract]
Opening Balance	$ 1,024	$ 1,084
New loans	154	57
Loans and Leases Receivable, Related Parties, Proceeds	(146)	(117)
Other changes	0	0
Closing Balance	$ 1,032	$ 1,024

PREMISES AND EQUIPMENT (Detail)

PREMISES AND EQUIPMENT (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property Plant And Equipment [Line Items]
Buildings and Improvements	$ 135,263	$ 131,206
Leasehold Improvements	56,530	54,734
Furniture and equipment	146,835	176,116
Property, Plant and Equipment, Gross	338,628	362,056
Accumulated Depreciation	(228,712)	(256,355)
Subtotal	109,916	105,701
Land	22,939	24,640
Projects in progress	17,134	17,473
Premises and equipment, net	$ 149,989	$ 147,814
Minimum [Member] | Building Improvements [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Minimum [Member] | Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	1 year
Minimum [Member] | Furniture and Fixtures [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	2 years
Maximum [Member] | Building Improvements [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	35 years
Maximum [Member] | Leasehold Improvements [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Maximum [Member] | Furniture and Fixtures [Member]
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	10 years

PREMISES AND EQUIPMENT- Additio

PREMISES AND EQUIPMENT- Additional information (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Jun. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Impaired Long Lived Assets Held And Used [Line Items]
Depreciation and amortization expense		$ 17,600	$ 15,000	$ 16,400
Insurance proceeds related to casualty losses		587	7,673	0
Gain from insurance proceeds		660	537	$ 0
Hurricane [Member]
Impaired Long Lived Assets Held And Used [Line Items]
Gain from insurance proceeds	$ 600
Hurricane [Member] | Property Plant And Equipment [Member]
Impaired Long Lived Assets Held And Used [Line Items]
Insurance proceeds related to casualty losses		600	2,000
Gain from insurance proceeds		$ 100	$ 500

GOODWILL AND OTHER INTANGIBLE_2

GOODWILL AND OTHER INTANGIBLES - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 15, 2016	Jun. 30, 2012
Finite Lived Intangible Assets [Line Items]
Goodwill	$ 28,100,000
Amortization expense	3,086,000	$ 3,593,000	$ 4,403,000
Goodwill impairment	0
Core Deposits [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	51,664,000	51,664,000
Amortization expense	800,000	1,100,000	1,700,000
Net carrying amount	$ 3,488,000	$ 4,335,000
Remaining amortization period	5 years 1 month 6 days	6 years
Customer Relationships [Member] | Credit Card [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	$ 24,465,000	$ 24,465,000
Amortization expense	2,100,000	2,300,000	2,500,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles					$ 24,500,000
Net carrying amount	$ 3,615,000	$ 5,702,000
Remaining amortization period	1 year 10 months 24 days	2 years 10 months 24 days
Customer Relationships [Member] | Insurance Customer Intangible [Member]
Finite Lived Intangible Assets [Line Items]
Finite Lived Intangible Assets Gross	$ 1,067,000	$ 1,067,000
Amortization expense	200,000	200,000	$ 200,000
Net carrying amount	$ 470,000	$ 622,000
Remaining amortization period	3 years	4 years
Doral Bank Transaction Member [Member] | Customer Relationships [Member] | Credit Card [Member]
Finite Lived Intangible Assets [Line Items]
Net carrying amount	$ 3,500,000	$ 4,300,000
Doral Bank Transaction Member [Member] | Customer Relationships [Member] | Insurance Customer Intangible [Member]
Finite Lived Intangible Assets [Line Items]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles				$ 1,100,000
Net carrying amount	$ 500,000	$ 600,000

GOODWILL AND OTHER INTANGIBLE_3

GOODWILL AND OTHER INTANGIBLES - Gross Amount and Accumulated Amortization of Other Intangible Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Core Deposits [Member]
Finite Lived Intangible Assets [Line Items]
Gross amount	$ 51,664	$ 51,664
Accumulated amortization	(48,176)	(47,329)
Net carrying amount	$ 3,488	$ 4,335
Remaining amortization period	5 years 1 month 6 days	6 years
Customer Relationships [Member] | Credit Card [Member]
Finite Lived Intangible Assets [Line Items]
Gross amount	$ 24,465	$ 24,465
Accumulated amortization	(20,850)	(18,763)
Net carrying amount	$ 3,615	$ 5,702
Remaining amortization period	1 year 10 months 24 days	2 years 10 months 24 days
Customer Relationships [Member] | Insurance Customer Intangible [Member]
Finite Lived Intangible Assets [Line Items]
Gross amount	$ 1,067	$ 1,067
Accumulated amortization	(597)	(445)
Net carrying amount	$ 470	$ 622
Remaining amortization period	3 years	4 years

GOODWILL - Yearly Amortization

GOODWILL - Yearly Amortization Expense (Detail) $ in Thousands	Dec. 31, 2019USD ($)
Goodwill and other Intangible Assets [Abstract]
2020	$ 2,851
2021	2,656
2022	915
2023	622
2024	457
2025 and after	$ 72

NON-CONSOLIDATED VARIABLE INT_3

NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended			3 Months Ended		12 Months Ended
	Feb. 16, 2011	Sep. 30, 2004	Apr. 30, 2004	Mar. 31, 2018	Sep. 30, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Servicing Liabilities At Fair Value [Line Items]
Gain on early extinguishment of debt						$ 0	$ 2,316	$ 1,391
Servicing Asset at Amortized Cost						26,762	27,428	25,255	$ 26,244
Servicing Asset At Fair Value Amount						31,027	31,738
OTTI						$ 497	$ 50	12,231
Weighted-average yield						2.52%	2.55%
Loans and Leases Receivable, Gross						$ 9,002,205	$ 8,858,123	$ 8,850,476
Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Qualitative Information						These sensitivities are hypothetical and should be used with caution. As the figures indicate, changes in fair value based on a 10% variation in assumptions generally cannot be extrapolated because the relationship between the change in assumption and the change in fair value may not be linear. Also, in this table, the effect of a variation in a particular assumption on the fair value of the servicing asset is calculated without changing any other assumption; in reality, changes in one factor may result in changes in another (for example, increases in market interest rates may result in lower prepayments), which may magnify or counteract the sensitivities
Percentage Of Variation In Assumptions						10.00%
Commercial Portfolio Segment [Member]
Servicing Liabilities At Fair Value [Line Items]
Loans and Leases Receivable, Gross						$ 3,786,779	$ 3,750,202
Minimum [Member]
Servicing Liabilities At Fair Value [Line Items]
Percentage Of Variation In Assumptions						10.00%
Maximum [Member]
Servicing Liabilities At Fair Value [Line Items]
Percentage Of Variation In Assumptions						20.00%
FirstBank [Member]
Servicing Liabilities At Fair Value [Line Items]
Payment To Be Made On Pro Rata Basis						65.00%
Prlp [Member]
Servicing Liabilities At Fair Value [Line Items]
Payment To Be Made On Pro Rata Basis						35.00%
Prlp [Member] | Minimum [Member]
Servicing Liabilities At Fair Value [Line Items]
Percentage Of Priority Interest To Be Received On Invested Capital						12.00%
CPG/GS [Member]
Servicing Liabilities At Fair Value [Line Items]
Loans and Leases Receivable, Gross	$ 136,100
CPG/GS [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Servicing Liabilities At Fair Value [Line Items]
Cash realized on sale of loan	$ 88,500
CPG/GS [Member] | FirstBank [Member] | Commercial Portfolio Segment [Member] | Nonperforming Financial Instruments [Member]
Servicing Liabilities At Fair Value [Line Items]
Acquired equity interest	35.00%
Statutory Trust One [Member]
Servicing Liabilities At Fair Value [Line Items]
Trust preferred securities repurchased				$ 23,800	$ 7,300
Trust Preferred Securities Winning Bid				90.00%
Trust Preferred Securties Discount				10.00%	19.00%
Gain on early extinguishment of debt				$ 2,300	$ 1,400
Trust Preferred Purchase Price Percent					81.00%
Variable Rate Demand Obligation [Member] | Junior Subordinated Debt [Member]
Servicing Liabilities At Fair Value [Line Items]
Debt Instrument, Maturity Date, Description						The Junior Subordinated Deferrable Debentures issued by the Corporation in April 2004 and September 2004 mature on June 17, 2034 and September 20, 2034, respectively; however, under certain circumstances, the maturity of Junior Subordinated Deferrable Debentures may be shortened (such shortening would result in a mandatory redemption of the variable rate TRuPs).
Variable Rate Demand Obligation [Member] | Statutory Trust One [Member]
Servicing Liabilities At Fair Value [Line Items]
Proceeds from Issuance of Trust Preferred Securities			$ 100,000
Proceeds of the issuance, together with proceeds of the purchase			3,100
Principal amount of corporation's junior subordinated deferrable debentures			$ 103,100
Variable Rate Demand Obligation [Member] | Statutory Trust Two [Member]
Servicing Liabilities At Fair Value [Line Items]
Proceeds from Issuance of Trust Preferred Securities		$ 125,000
Proceeds of the issuance, together with proceeds of the purchase		3,900
Principal amount of corporation's junior subordinated deferrable debentures		$ 128,900
MBS [Member]
Servicing Liabilities At Fair Value [Line Items]
Weighted-average yield						2.60%	2.71%
MBS [Member] | Private label [Member]
Servicing Liabilities At Fair Value [Line Items]
Servicing Asset at Amortized Cost						$ 16,000
Servicing Asset At Fair Value Amount						11,100
OTTI						$ 500
Weighted-average yield						3.90%
MBS [Member] | Private label [Member] | London Interbank Offered Rate (LIBOR) [Member]
Servicing Liabilities At Fair Value [Line Items]
Debt Instrument Description Of Variable Rate Basis						90-day LIBOR
GNMA [Member]
Servicing Liabilities At Fair Value [Line Items]
Principal amount of corporation serviced loans securitized through GNMA						$ 1,900,000

NON-CONSOLIDATED VARIABLE INT_4

NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS - Changes in Servicing Assets (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Transfers and Servicing [Abstract]
Balance at beginning of period	$ 27,428	$ 25,255	$ 26,244
Capitalization of servicing assets	4,039	3,864	3,318
Amortization	(4,592)	(2,895)	(3,091)
Temporary impairment recoveries (charges), net	(43)	1,289	(1,611)
Adjustment to servicing assets for loans repurchased	(70)	(85)	395
Balance at end of period	$ 26,762	$ 27,428	$ 25,255

NON-CONSOLIDATED VARIABLE INT_5

NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS - Changes in Impairment Allowance (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Transfers and Servicing [Abstract]
Balance at beginning of period	$ 30	$ 1,451	$ 461
Temporary impairment charges	78	123	1,611
OTTI of servicing assets	0	(132)	(621)
Recoveries	(35)	(1,412)	0
Balance at end of period	$ 73	$ 30	$ 1,451

NON-CONSOLIDATED VARIABLE INT_6

NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS - Components of Net Servicing Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Transfers and Servicing [Abstract]
Servicing fees	$ 8,522	$ 8,704	$ 7,630
Late charges and prepayment penalties	610	510	405
Adjustment to servicing assets for loans repurchased	(70)	(85)	395
Other	(15)	(8)	(35)
Servicing income, gross	9,047	9,121	8,395
Amortization and impairment of servicing assets	(4,635)	(1,606)	(4,702)
Servicing income, net	$ 4,412	$ 7,515	$ 3,693

NON-CONSOLIDATED VARIABLE INT_7

NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS - Key Economic Assumptions Used in Determining Fair Value at Time of Sale of Loans (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Maximum [Member] | Conventional Loan [Member]
Assumption For Fair Value On Securitization Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities [Line Items]
Constant prepayment rate	6.90%	6.50%	6.70%
Discount rate	10.00%	10.00%	10.00%
Maximum [Member] | Conventional Non Conforming Mortgage Loans [Member]
Assumption For Fair Value On Securitization Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities [Line Items]
Constant prepayment rate	9.30%	10.30%	9.50%
Discount rate	14.30%	14.30%	14.30%
Maximum [Member] | Government-guaranteed mortgage loans [Member]
Assumption For Fair Value On Securitization Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities [Line Items]
Constant prepayment rate	6.40%	6.00%	6.20%
Discount rate	12.00%	12.00%	12.00%
Minimum [Member] | Conventional Loan [Member]
Assumption For Fair Value On Securitization Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities [Line Items]
Constant prepayment rate	6.70%	6.20%	6.30%
Discount rate	10.00%	10.00%	10.00%
Minimum [Member] | Conventional Non Conforming Mortgage Loans [Member]
Assumption For Fair Value On Securitization Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities [Line Items]
Constant prepayment rate	8.90%	9.10%	9.10%
Discount rate	14.30%	14.30%	14.30%
Minimum [Member] | Government-guaranteed mortgage loans [Member]
Assumption For Fair Value On Securitization Date Of Interests Continued To Be Held By Transferor Servicing Assets Or Liabilities [Line Items]
Constant prepayment rate	6.20%	5.60%	6.00%
Discount rate	12.00%	12.00%	12.00%

NON-CONSOLIDATED VARIABLE INT_8

NON-CONSOLIDATED VARIABLE INTEREST ENTITIES AND SERVICING ASSETS - Weighted-Averages of Key Economic Assumptions in Valuation Model (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Transfers and Servicing [Abstract]
Carrying amount of servicing assets	$ 26,762	$ 27,428	$ 25,255	$ 26,244
Fair value	$ 31,027	$ 31,738
Weighted-average expected life	8 years 4 months 20 days	8 years 5 months 12 days
Constant prepayment rate	6.45%	6.26%
Decrease in fair value due to 10% adverse change	$ 748	$ 747
Decrease in fair value due to 20% adverse change	$ 1,464	$ 1,462
Discount rate	11.27%	11.25%
Decrease in fair value due to 10% adverse change	$ 1,450	$ 1,528
Decrease in fair value due to 20% adverse change	$ 2,783	$ 2,930

DEPOSITS - Narratives (Detail)

DEPOSITS - Narratives (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deposits [Line Items]
Weighted-average interest rate on total interest-bearing	1.18%	1.03%
Unplanned overdrafts of demand deposits that were reclassified as loans	$ 4,100,000	$ 2,100,000
Pre-arranged overdrafts lines of credit	28,600,000	21,700,000
CDs in denominations of $100,000 or higher	2,400,000,000	2,200,000,000
Brokered certificates of deposit	435,089,000	555,597,000
Unamortized broker placement fees	900,000	1,100,000
Deposits	9,348,429,000	8,994,714,000
Market value of uninsured portions collateralized by securities and loans	769,600,000	592,900,000
Amortized cost of uninsured portions collateralized by securities and loans	780,900,000	615,700,000
Accretion Of Premium From Acquisition	7,000	9,000	$ 100,000
Letters of credit issued by the FHLB as pledges for public deposits in the Virgin Islands	1,800,000,000	1,900,000,000
Amortization Of Broker Placement Fees	732,000	$ 1,163,000	1,900,000
Time deposits in denomnations of $250,000 or more	$ 1,300,000,000
CDs including brokered CDs [Member]
Deposits [Line Items]
Weighted Average Interest Rate of Time Deposits, $100,000 or More	2.15%	1.88%
Brokered Cds in denominations of $100,000 or higher [Member]
Deposits [Line Items]
Brokered certificates of deposit	$ 434,800,000
Federal Home Loan Bank [Member]
Deposits [Line Items]
Letters of credit issued by the FHLB as pledges for public deposits in the Virgin Islands	1,600,000,000	$ 1,700,000,000
Government [Member]
Deposits [Line Items]
Deposits	1,100,000,000	900,800,000
Puerto Rico [Member]
Deposits [Line Items]
Brokered certificates of deposit	243,400,000	441,100,000	1,000,000,000
Deposits	6,422,864,000	6,208,531,000	6,268,056,000
Puerto Rico [Member] | Government [Member]
Deposits [Line Items]
Deposits	826,900,000	677,300,000
United States [Member]
Deposits [Line Items]
Brokered certificates of deposit	191,700,000	114,500,000	158,000,000
Deposits	1,661,657,000	1,519,362,000	1,637,941,000
United States [Member] | Government [Member]
Deposits [Line Items]
Deposits	7,600,000	0
Virgin Islands [Member]
Deposits [Line Items]
Deposits	1,263,908,000	1,266,821,000	$ 1,116,634,000
Virgin Islands [Member] | Federal Home Loan Bank [Member]
Deposits [Line Items]
Letters of credit issued by the FHLB as pledges for public deposits in the Virgin Islands	212,000,000	182,000,000
Virgin Islands [Member] | Government [Member]
Deposits [Line Items]
Deposits	$ 227,700,000	$ 223,400,000

DEPOSITS - Summary of Deposit B

DEPOSITS - Summary of Deposit Balances (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deposits, by Type [Abstract]
Non-interest bearing checking accounts	$ 2,367,856	$ 2,395,481
Savings accounts	2,437,345	2,334,949
Interest-bearing checking accounts	1,412,390	1,304,043
Certificates of deposit	2,695,749	2,404,644
Brokered certificates of deposit	435,089	555,597
Total deposits	$ 9,348,429	$ 8,994,714

DEPOSITS- Certificates of Depos

DEPOSITS- Certificates of Deposits Mature (Detail) $ in Thousands	Dec. 31, 2019USD ($)
Deposits [Abstract]
Three months or less	$ 553,322
Over three months to six months	447,694
Over six months to one year	770,191
Over one year to two years	744,805
Over two years to three years	323,033
Over three years to four years	161,959
Over four years to five years	122,722
Over five years	7,112
Total	$ 3,130,838

DEPOSITS - Summary of Deposits

DEPOSITS - Summary of Deposits Balance (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Minimum [Member]
Deposits [Line Items]
Interest-bearing savings accounts	0.05%	0.05%
Interest-bearing checking accounts	0.05%	0.05%
Certificates of deposit	0.10%	0.10%
Brokered certificates of deposit	1.20%	1.10%
Maximum [Member]
Deposits [Line Items]
Interest-bearing savings accounts	2.00%	0.40%
Interest-bearing checking accounts	1.00%	1.00%
Certificates of deposit	4.00%	4.00%
Brokered certificates of deposit	3.00%	3.00%

DEPOSITS - Brokered Certificate

DEPOSITS - Brokered Certificates Of Deposit Mature (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deposits [Abstract]
Three months or less	$ 61,157
Over three months to six months	51,368
Over six months to one year	118,852
Over one year to three years	169,483
Over three years to five years	28,281
Over five years	5,948
Total	$ 435,089	$ 555,597

DEPOSITS - Interest Expenses on

DEPOSITS - Interest Expenses on deposits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest Expense, Deposits [Abstract]
Interest-bearing checking accounts	$ 6,071	$ 5,208	$ 4,566
Savings	16,017	14,298	12,520
Certificates of deposit	44,658	33,652	30,277
Brokered certificates of deposit	11,036	14,493	19,174
Interest expense on deposits	$ 77,782	$ 67,651	$ 66,537

SECURITIES SOLD UNDER AGREEME_3

SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Narratives (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Securities Sold Under Agreements To Repurchase And Other Short Term Borrowings [Line Items]
Maximum aggregate balance outstanding	$ 100,000	$ 150,086
Repurchase Agreements [Member]
Securities Sold Under Agreements To Repurchase And Other Short Term Borrowings [Line Items]
Accrued interest payable on repurchase agreements	800	2,800
Maximum [Member]
Securities Sold Under Agreements To Repurchase And Other Short Term Borrowings [Line Items]
Maximum aggregate balance outstanding	$ 150,100	$ 200,000
Weighted Average [Member]
Securities Sold Under Agreements To Repurchase And Other Short Term Borrowings [Line Items]
Assets Sold under Agreements to Repurchase, Interest Rate	2.26%	2.46%
Average balance outstanding	$ 110,600	$ 166,000
Weighted Average [Member] | Repurchase Agreements [Member]
Securities Sold Under Agreements To Repurchase And Other Short Term Borrowings [Line Items]
Weighted-average interest rate during the year	6.01%	5.66%

SECURITIES SOLD UNDER AGREEME_4

SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Securities Sold Under Agreements to Repurchase (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Securities Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	$ 100,000	$ 150,086
Short-term Debt [Member]
Securities Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	0	50,086
Long-term Debt [Member]
Securities Sold Under Agreements To Repurchase [Line Items]
Repurchase agreements	$ 100,000	$ 100,000

SECURITIES SOLD UNDER AGREEME_5

SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Securities Sold Under Agreements to Repurchase (Parenthetical) (Detail)	Dec. 31, 2019	Dec. 31, 2018
Short-term Debt [Member]
Securities Sold Under Agreements To Repurchase [Line Items]
Weighted-average interest rates on repurchase agreements		2.85%
Long-term Debt [Member]
Securities Sold Under Agreements To Repurchase [Line Items]
Weighted-average interest rates on repurchase agreements	2.26%	2.26%

SECURITIES SOLD UNDER AGREEME_6

SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Schedule of Repurchase Agreement Maturity (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Securities Sold Under Agreements To Repurchase [Line Items]
Securities Sold Under Agreements To Repurchase	$ 100,000	$ 150,086
Over one year to three years
Securities Sold Under Agreements To Repurchase [Line Items]
Securities Sold Under Agreements To Repurchase	$ 100,000

SECURITIES SOLD UNDER AGREEME_7

SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Securities sold under agreements to repurchase, Underlying Securities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Securities Sold Under Agreements To Repurchase [Line Items]
Amortized Cost of Underlying Securities	$ 129,406	$ 187,359
Balance of Borrowings	100,000	150,086
Approximate Fair Value of Underlying Securities	130,165	182,735
Accrued interest receivable on loans and investments	50,205	50,365
Repurchase Agreements [Member]
Securities Sold Under Agreements To Repurchase [Line Items]
Accrued interest receivable on loans and investments	347	483
Repurchase Agreements [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Securities Sold Under Agreements To Repurchase [Line Items]
Amortized Cost of Underlying Securities	13,776	31,396
Balance of Borrowings	4,723	25,276
Approximate Fair Value of Underlying Securities	$ 13,768	$ 30,958
Weighted-average interest rates on repurchase agreements	1.53%	1.55%
Repurchase Agreements [Member] | Mortgage Backed Securities [Member]
Securities Sold Under Agreements To Repurchase [Line Items]
Amortized Cost of Underlying Securities	$ 115,630	$ 155,963
Balance of Borrowings	95,277	124,810
Approximate Fair Value of Underlying Securities	$ 116,397	$ 151,777
Weighted-average interest rates on repurchase agreements	2.31%	2.39%

SECURITIES SOLD UNDER AGREEME_8

SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE - Repurchase Agreements Grouped by Counterparty (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Repurchase Agreement Counterparty [Line Items]
Repurchase agreements	$ 100,000	$ 150,086
Jp Morgan Chase [Member]
Repurchase Agreement Counterparty [Line Items]
Repurchase agreements	$ 100,000
Weighted-Average Maturity	25 months

ADVANCES FROM THE FEDERAL HOM_3

ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB) - Summary of Advances from FHLB (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Federal Home Loan Bank, Advances [Line Items]
Fixed-rate advances from FHLB	$ 570,000	$ 740,000
Short-term Debt [Member]
Federal Home Loan Bank, Advances [Line Items]
Fixed-rate advances from FHLB	35,000	0
Long-term Debt [Member]
Federal Home Loan Bank, Advances [Line Items]
Fixed-rate advances from FHLB	$ 535,000	$ 740,000

ADVANCES FROM THE FEDERAL HOM_4

ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB) - Summary of Advances from FHLB (Parenthetical) (Detail)	Dec. 31, 2019	Dec. 31, 2018
Short-term Debt [Member]
Federal Home Loan Bank, Advances [Line Items]
Weighted-interest rate	1.83%
Federal Home Loan Bank, Advance, Branch of FHLB Bank, Interest Rate, Type [Fixed List]	Fixed
Long-term Debt [Member]
Federal Home Loan Bank, Advances [Line Items]
Weighted-interest rate	1.63%	0.32%
Federal Home Loan Bank, Advance, Branch of FHLB Bank, Interest Rate, Type [Fixed List]	Fixed

ADVANCES FROM THE FEDERAL HOM_5

ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB) - Advances from FHLB Mature (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Federal Home Loan Bank, Advances, Fixed Rate [Abstract]
Within one month	$ 35,000
Over three to six months	45,000
Over six months to one year	50,000
Over one to three years	440,000
Total	$ 570,000	$ 740,000

ADVANCES FROM THE FEDERAL HOM_6

ADVANCES FROM THE FEDERAL HOME LOAN BANK (FHLB) - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Federal Home Loan Bank, Advances [Line Items]
Qualifying Mortgage Collateral With Market Value Higher Than Outstanding Advances	125.00%
Loans Pledged as Collateral	$ 1,800	$ 1,900
Additional capacity on credit facility based on collateral pledged	547.6
Federal Home Loan Bank Advances [Member]
Federal Home Loan Bank, Advances [Line Items]
Loans Pledged As Collateral Fair Value	1,300
Loans Pledged as Collateral	$ 1,600	$ 1,700

OTHER BORROWINGS - Components o

OTHER BORROWINGS - Components of Other Borrowings (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Subordinated Borrowing [Line Items]
Junior subordinated debentures	$ 184,150	$ 184,150
due June 17, 2034 [Member] | Statutory Trust One [Member]
Subordinated Borrowing [Line Items]
Junior subordinated debentures	65,593	65,593
due September 20, 2034 [Member] | Statutory Trust Two [Member]
Subordinated Borrowing [Line Items]
Junior subordinated debentures	$ 118,557	$ 118,557

OTHER BORROWINGS - Components_2

OTHER BORROWINGS - Components of Other Borrowings (Parenthetical) (Detail) - Junior Subordinated Debt [Member] - London Interbank Offered Rate (LIBOR) [Member]	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
due June 17, 2034 [Member] | Statutory Trust One [Member]
Subordinated Borrowing [Line Items]
Debt Instrument Basis Spread On Variable Rate	2.75%
Debt Instrument Description Of Variable Rate Basis	3-month LIBOR
Long Term Debt Percentage Bearing Variable Interest Rate	4.65%	5.54%
Subordinated Borrowing Due Date	Jun. 17, 2034
due September 20, 2034 [Member] | Statutory Trust Two [Member]
Subordinated Borrowing [Line Items]
Debt Instrument Basis Spread On Variable Rate	2.50%
Debt Instrument Description Of Variable Rate Basis	3-month LIBOR
Long Term Debt Percentage Bearing Variable Interest Rate	4.41%	5.29%
Subordinated Borrowing Due Date	Sep. 20, 2034

EARNINGS PER COMMON SHARE - Cal

EARNINGS PER COMMON SHARE - Calculations of Earnings Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net income:
Net income	$ 167,377	$ 201,608	$ 66,956
Net income attributable to common stockholders	$ 164,701	$ 198,932	$ 64,280
Weighted-Average Shares:
Average common shares outstanding	216,614	215,709	213,963
Average potential dillutive common shares	520	968	2,155
Average common shares outstanding - assuming dillution	217,134	216,677	216,118
Earnings Per Share, Basic and Diluted [Abstract]
Basic	$ 0.76	$ 0.92	$ 0.30
Diluted	$ 0.76	$ 0.92	$ 0.30

EARNINGS PER COMMON SHARE - Add

EARNINGS PER COMMON SHARE - Additional Information (Detail) - Common Stock Outstanding [Member] - Department Of Treasury [Member]	May 17, 2018shares
Noncash or Part Noncash Acquisitions [Line Items]
Common stock purchased through a warrants excercise	1,285,899
Common stock shares issued for exercised warrants	730,571

STOCK-BASED COMPENSATION - Omni

STOCK-BASED COMPENSATION - Omnibus Plan - Additional Information (Detail) - Omnibus Plan [Member]	Dec. 31, 2019shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Authorized granting up shares	14,169,807
Restricted stock available for issuance	6,597,643

STOCK-BASED COMPENSATION - Rest

STOCK-BASED COMPENSATION - Restricted Stock - Additional Information (Detail) - Omnibus Plan [Member] - Restricted Stock [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted shares restricted stocks	314,212
Stock-based compensation expense	$ 2.8	$ 3.4	$ 4
Unrecognized compensation cost related to unvested shares	$ 2.7
Period for cost recognition not yet recognized	1 year 6 months
Director [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted shares restricted stocks	51,841	65,447
Restricted stock vesting period	1 year	1 year
Management [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted shares restricted stocks	262,371	342,439
Retirement Eligible Shares	16,808	20,447
Restricted stock vesting after two-year anniversary of the grant date [Member] | Management [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock vesting percentage	50.00%	50.00%
Restricted stock vesting after three-year anniversary of the grant date [Member] | Management [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Restricted stock vesting percentage	50.00%	50.00%

STOCK-BASED COMPENSATION - Re_2

STOCK-BASED COMPENSATION - Restricted Stock Activity Under Omnibus Plan (Detail) - Omnibus Plan [Member] - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2019$ / sharesshares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unvested shares outstanding, beginning of period | shares	964,110
Granted | shares	314,212
Forefeited | shares	(14,000)
Vested | shares	(619,517)
Unvested shares of outstanding, end of period | shares	644,805
Weighted-Average Grant Date Fair Value, beginning of period | $ / shares	$ 4.79
Weighted-Average Grant Date Fair Value, Granted | $ / shares	10.97
Weighted-Averages Grant Date Dair Value, Forfeited | $ / shares	8.55
Weighted-Average Grant Date Fair Value, Vested | $ / shares	3.97
Weighted-Average Grant Date Fair Value, end of period | $ / shares	$ 8.51

STOCK-BASED COMPENSATION - Perf

STOCK-BASED COMPENSATION - Performance Units - Additional Information (Detail) - Omnibus Plan [Member] - Performance Shares [member] - Executives [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted performance units	200,053	304,408
Requisite service period	3 years	3 years
Performance units program description	The performance units will vest based on the achievement of a pre-established tangible book value per share target as of December 31, 2021. All of the performance units will vest if performance is at the pre-established performance target level or above. However, the participants may vest on 50% of the awards to the extent that performance is below the target but at 80% of the pre-established performance target level (the “80% minimum threshold”), which is measured based upon the growth in the tangible book value during the performance cycle. If performance is between the 80% minimum threshold and the pre-established performance target level, the participants will vest on a proportional amount. No performance units will vest if performance is below the 80% minimum threshold.
Stock-based compensation expense	$ 1.1	$ 0.6
Unrecognized compensation cost related to unvested performance units	$ 2.4

STOCK-BASED COMPENSATION - Sala

STOCK-BASED COMPENSATION - Salary Stock - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Repurchased of common stock	176,015	434,066
Omnibus Plan [Member] | Restricted Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted-Average Grant Date Fair Value, Granted	$ 10.97
Compensation expense	$ 2.8	$ 3.4	$ 4
Repurchased of common stock	176,015	337,689
Omnibus Plan [Member] | Salary Stock Compensation Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted shares		268,709
Weighted-Average Grant Date Fair Value, Granted		$ 6.51
Compensation expense		$ 1.7
Repurchased of common stock		96,377

STOCKHOLDERS' EQUITY - Addition

STOCKHOLDERS' EQUITY - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	Oct. 25, 2019	May 17, 2018	Dec. 31, 2019	Dec. 31, 2018
Class Of Stock [Line Items]
Common stock, shares authorized			2,000,000,000	2,000,000,000
Common stock, par value			$ 0.1	$ 0.1
Common stock, shares issued			222,103,721	221,789,509
Common stock, shares outstanding			217,359,337	217,235,140
Dividends declared per common share			$ 0.14	$ 0.03
Preferred Stock Shares Authorized			50,000,000	50,000,000
Preferred stock, par value			$ 1
Liquidation value per share, Preferred stock			$ 25
Treasury Stock Shares Acquired			176,015	434,066
Treasury Stock Shares			4,744,384	4,554,369
Legal surplus reserve rate			10.00%
Puerto Rico Banking Law Description			The Puerto Rico Banking Law provides that, when the expenditures of a Puerto Rico commercial bank are greater than receipts, the excess of the expenditures over receipts must be charged against the undistributed profits of the bank, and the balance, if any, must be charged against the legal surplus reserve, as a reduction thereof. If there is no legal surplus reserve sufficient to cover such balance in whole or in part, the outstanding amount must be charged against the capital account and the Bank cannot pay dividends until it can replenish the legal surplus reserve to an amount of at least 20% of the original capital contributed.
Legal Surplus Amount Additions			$ 17,400	$ 20,500
Legal Surplus Amount			$ 97,586	80,191
7.125% Noncumulative Perpetual Monthly Income Preferred Stock, Series A [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage			7.125%
8.35% Noncumulative Perpetual Monthly Income Preferred Stock, Series B [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage			8.35%
7.40% Noncumulative Perpetual Monthly Income Preferred Stock, Series C [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage			7.40%
7.25% Noncumulative Perpetual Monthly Income Preferred Stock, Series D [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage			7.25%
7.00% Noncumulative Perpetual Monthly Income Preferred Stock, Series E [Member]
Class Of Stock [Line Items]
Preferred stock dividend rate percentage			7.00%
Common Stock [Member]
Class Of Stock [Line Items]
Dividends declared per common share	$ 0.05
Increase in dividends per share declared	$ 0.02
Dividends declared			$ 30,500	$ 6,500
Common Stock [Member] | Department Of Treasury [Member]
Class Of Stock [Line Items]
Common stock purchased through a warrants excercise		1,285,899
Common stock shares issued for exercised warrants		730,571
Shares Used To Cover Strike Price		555,328

EMPLOYEES' BENEFIT PLAN- Narrat

EMPLOYEES' BENEFIT PLAN- Narratives (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent	50.00%
Employee contribution percent maximum to get employer matching contribution	6.00%
Total plan expense	$ 2,900,000	$ 1,500,000	$ 900,000
Matching Constribution Description	The matching contribution of fifty cents for every dollar of the employee’s contribution is comprised of: (i) twenty-five cents for every dollar of the employee’s contribution up to 6% of the employee’s eligible compensation to be paid to the Plan as of each bi-weekly payroll; and, (ii) an additional twenty-five cents for every dollar of the employee’s contribution up to 6% of the employee’s eligible compensation to be deposited as a lump sum subsequent to the Plan Year.
Additional discretionary contribution	$ 0
PUERTO RICO
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Amount	15,000	15,000	15,000
United States And Virign Islands Operations [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Contribution Plan, Maximum Annual Contribution Per Employee, Amount	$ 19,000	$ 18,500	$ 18,000

OTHER NON- INTEREST EXPENSES- D

OTHER NON- INTEREST EXPENSES- Detail of other non-interest expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Other Non Interest Expenses [Abstract]
Supplies and printing	$ 1,966	$ 2,177	$ 1,990
Release of reserve for unfunded lending commitments	(412)	(264)	(928)
Amortization Of Intangible Assets	3,086	3,593	4,403
Servicing and processing fees	4,781	4,991	4,421
Write-down and losses on sale of non-real estate repossessed properties	8	62	253
Insurance and supervisory fees	3,596	4,602	4,809
Provision for operational losses	2,164	1,774	2,568
Other	4,632	5,140	4,635
Total	$ 19,821	$ 22,075	$ 22,151

OTHER NON- INTEREST INCOME- Det

OTHER NON- INTEREST INCOME- Detail of other non-interest income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Non Deferrable Loan Fees	$ 2,789	$ 2,384	$ 2,109
ATM and POS fees	9,147	9,515	8,929
Credit and debit card intercharge and other fees	11,759	9,598	7,587
Mail and cable transmission comissions	2,207	2,101	1,729
Fair value adjustments and gain (losses) on sales of commercial and construction loans held for sale	2,316	(3,186)	0
(Loss) gain from sales of fixed-assets	(242)	1,366	149
Gain from insurance proceeds	660	537	0
Other	5,638	5,183	4,142
Total	39,909	32,742	28,854
Credit Card, Merchant Discount [Member]
Merchant related income	$ 5,635	$ 5,244	$ 4,209

INCOME TAXES - Additional Infor

INCOME TAXES - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Contingency [Line Items]
Maximum corporate tax rate	37.50%	39.00%	39.00%
Deferred tax asset related to NOLs	$ 206,400
Net deferred tax asset	264,842	$ 319,851
Valuation allowance	86,553	100,661
Deferred tax asset not subject to expiration period	92,000	104,000
Income tax expense (benefit)	71,995	(10,970)	$ (4,973)
UTBs	0
U S [Member]
Income Tax Contingency [Line Items]
Income tax expense (benefit)	4,500	3,800
FirstBank [Member]
Income Tax Contingency [Line Items]
Net deferred tax asset	264,800	319,800
Valuation allowance	55,600	$ 68,100
Holding Company and First Management [Member]
Income Tax Contingency [Line Items]
Valuation allowance	$ 30,900
Domestic Country [Member] | Subsidiaries [Member]
Income Tax Contingency [Line Items]
Dividend received deduction	100.00%
Domestic Country [Member] | Other taxable domestic corporations [Member]
Income Tax Contingency [Line Items]
Dividend received deduction	85.00%

INCOME TAXES- Components of inc

INCOME TAXES- Components of income tax expense (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Current income tax expense	$ 16,986	$ 14,073	$ 8,179
Deferred income tax expense (benefit):
Adjustment for enacted changes in tax law	0	15,402	138
Reversal of deferred tax asset valuation allowance	0	(63,228)	(1,792)
Other deferred income tax expense (benefit)	55,009	22,783	(11,498)
Total income tax expense (benefit)	$ 71,995	$ (10,970)	$ (4,973)

INCOME TAXES- Reconciliations o

INCOME TAXES- Reconciliations of Income tax expenses (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation [Abstract]
Computed income tax at statutory rate	$ 89,764	$ 74,349	$ 24,173
Federal and state taxes	4,467	3,768	2,335
Benefit of net exempt income	(24,811)	(22,782)	(16,596)
Disallowed NOL carryforward resulting from net exempt income	15,887	14,904	5,091
Deferred tax valuation allowance	(14,108)	(90,521)	(10,037)
Adjustments in net deferred tax assets due to changes in enacted tax rates	0	15,402	138
Change in tax status of subsidiaries	0	0	(13,161)
Share based compensation windfull	(1,165)	(1,595)	(40)
Effect of capital losses subject to preferential rates	0	0	2,102
Non deductible expenses and other permanent differences	(1,712)	(839)	(470)
Tax return to provision adjustments	1,846	4	607
Other-net	1,827	(3,660)	885
Total income tax expense (benefit)	$ 71,995	$ (10,970)	$ (4,973)
Federal and state taxes %	1.60%	2.00%	3.80%
Benefit of net exempt income %	(10.40%)	(12.00%)	(26.80%)
Disallowed NOL carryforward resulting from net exempt income %	6.60%	7.80%	8.20%
Deferred tax valuation allowance %	(5.90%)	(47.50%)	(16.20%)
Adjustments in net deferred tax assets due to changes in enacted tax rates %	0.00%	8.10%	0.20%
Change in tax status of subsidiaries %	0.00%	0.00%	(21.20%)
Share based compensation windfall %	(0.50%)	(0.80%)	0.00%
Effect of capital losses subject to preferential rates %	0.00%	0.00%	3.40%
Nondeductible expenses and other permanent differences %	(0.70%)	(0.40%)	(0.80%)
Tax-return provision adjustments %	0.80%	0.00%	1.00%
Other-net %	1.10%	(1.90%)	1.40%
Computed income tax at statutory tax rate %	37.50%	39.00%	39.00%
Total income tax expense (benefit) %	30.10%	(5.70%)	(8.00%)

INCOME TAXES- Significant compo

INCOME TAXES- Significant components of deferred tax assets and liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred Tax Assets [Abstract]
Net operating loss carryforward	$ 259,717	$ 316,059
Allowance for loan and lease losses	58,793	75,010
Alternative Minimum Tax credits available for carryforwards	13,813	9,238
Unrealized loss on OREO valuation	13,963	15,405
Unrealized net loss on available for sale securities, net	0	189
Settlement payment - closing agreement	7,031	7,031
Legal and other reserves	2,791	3,293
Reserve for insurance premium cancellations	613	610
Other	9,722	7,526
Total gross deferred tax asset	366,443	434,361
Deferred Tax Liabilities [Abstract]
Differences between the assigned values and tax bases of assets and liabilities recognized in purchase business combinations	3,823	4,192
Servicing assets	8,906	9,143
Unrealized gain on available-for-sale securities, net	1,808	0
Other	511	514
Deferred tax liability	15,048	13,849
Valuation allowance	(86,553)	(100,661)
Net deferred tax asset	$ 264,842	$ 319,851

OTHER COMPREHENSIVE LOSS - Chan

OTHER COMPREHENSIVE LOSS - Change in Accumulated Other Comprehensive Loss by Component (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ (40,415)
Ending balance	6,764	$ (40,415)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Debt Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(40,415)	(20,609)	$ (34,383)
Other comprehensive (loss) income	47,179	(19,806)	13,774
Ending balance	6,764	(40,415)	(20,609)
Accumulated Net Investment Gain (Loss) Attributable to Parent [Member] | Equity Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	0	(6)	(7)
Other comprehensive (loss) income	0	0	1
Amounts reclassified from accumulated comprehensive loss	0	6	0
Ending balance	$ 0	$ 0	$ (6)

OTHER COMPREHENSIVE LOSS - Recl

OTHER COMPREHENSIVE LOSS - Reclassifications Out of Accumulated Other Comprehensive Loss (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Total before tax	$ 239,372	$ 190,638	$ 61,983
Income tax expense (benefit)	71,995	(10,970)	(4,973)
Net Income Loss	167,377	201,608	66,956
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Investment Gain (Loss) Attributable to Parent [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (loss) gain on sale of investments	0	(34)	371
OTTI on debt securities	(497)	(50)	(12,231)
Total before tax	(497)	(84)	(11,860)
Income tax expense (benefit)	0	0	0
Net Income Loss	$ (497)	$ (84)	$ (11,860)

LEASES - Supplemental Balance S

LEASES - Supplemental Balance Sheet Information (Detail) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
Operating lease right-of-use right	$ 61,327
Operating Lease Liability	$ 64,259
Operating lease weighted-average remaining lease term (in years)	10 years 9 months 18 days
Operating lease weighted-average discount rate	3.29%

LEASES - Supplemental Cash Flow

LEASES - Supplemental Cash Flow Information Related to Leases (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Leases [Abstract]
Operating cash flow from operating leases	$ 10,219	$ 0	$ 0
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 10,762	$ 0	$ 0

LEASES - Maturities Under Lease

LEASES - Maturities Under Lease Liability (Detail) $ in Thousands	Dec. 31, 2019USD ($)
Leases [Abstract]
2020	$ 10,329
2021	9,678
2022	8,664
2023	6,982
2024	6,395
2025 and after	35,205
Total lease payments	77,253
Less: imputed interest	(12,994)
Total present value of lease liability	$ 64,259

LEASES - Additional Information

LEASES - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Feb. 14, 2020
Lessee, Lease, Description [Line Items]
Operating lease cost	$ 10,700,000
Finance lease	$ 0	$ 0
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease terms	2 years
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease terms	30 years
Lessee, Operating Lease, Renewal Term	7 years

FAIR VALUE - Assets and Liabili

FAIR VALUE - Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	$ 2,123,525	$ 1,942,568
Fair Value, Measurements, Recurring [Member]
Assets Fair Value Disclosure [Abstract]
Equity Securities, FV-NI	1,428	418
Fair Value, Measurements, Recurring [Member] | Other Available For Sale Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	500	500
Fair Value, Measurements, Recurring [Member] | U S Treasury Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	7,479	7,456
Fair Value, Measurements, Recurring [Member] | Government Agencies Debt Securities [Member] | Noncallable [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	146,777	319,124
Fair Value, Measurements, Recurring [Member] | Government Agencies Debt Securities [Member] | Call Option [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	1,950,331	1,594,622
Fair Value, Measurements, Recurring [Member] | US States and Political Subdivisions Debt Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	7,322	6,952
Fair Value, Measurements, Recurring [Member] | Private label [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	11,116	13,914
Fair Value, Measurements, Recurring [Member] | Interest Rate Cap [Member] | Purchase [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	11	623
Fair Value, Measurements, Recurring [Member] | Interest Rate Cap [Member] | Written [Member]
Derivative Liabilities [Abstract]
Derivative Liabilities	11	617
Fair Value, Measurements, Recurring [Member] | Forward Contracts [Member]
Derivative Liabilities [Abstract]
Derivative Liabilities	138	383
Fair Value, Measurements, Recurring [Member] | Interest Rate Lock Commitments [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	341	383
Fair Value, Measurements, Recurring [Member] | Forward loan sales commitments [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	20	12
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member]
Assets Fair Value Disclosure [Abstract]
Equity Securities, FV-NI	1,428	418
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Other Available For Sale Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | U S Treasury Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	7,479	7,456
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Government Agencies Debt Securities [Member] | Noncallable [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Government Agencies Debt Securities [Member] | Call Option [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | US States and Political Subdivisions Debt Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Private label [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Interest Rate Cap [Member] | Purchase [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Interest Rate Cap [Member] | Written [Member]
Derivative Liabilities [Abstract]
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Forward Contracts [Member]
Derivative Liabilities [Abstract]
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Interest Rate Lock Commitments [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 1 [Member] | Forward loan sales commitments [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member]
Assets Fair Value Disclosure [Abstract]
Equity Securities, FV-NI	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | Other Available For Sale Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | U S Treasury Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | Government Agencies Debt Securities [Member] | Noncallable [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	146,777	319,124
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | Government Agencies Debt Securities [Member] | Call Option [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	1,950,331	1,594,622
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | US States and Political Subdivisions Debt Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	4,348	4,128
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | Private label [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | Interest Rate Cap [Member] | Purchase [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	11	623
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | Interest Rate Cap [Member] | Written [Member]
Derivative Liabilities [Abstract]
Derivative Liabilities	11	617
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | Forward Contracts [Member]
Derivative Liabilities [Abstract]
Derivative Liabilities	138	383
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | Interest Rate Lock Commitments [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	341	383
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 2 [Member] | Forward loan sales commitments [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	20	12
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member]
Assets Fair Value Disclosure [Abstract]
Equity Securities, FV-NI	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Other Available For Sale Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	500	500
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | U S Treasury Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Government Agencies Debt Securities [Member] | Noncallable [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Government Agencies Debt Securities [Member] | Call Option [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | US States and Political Subdivisions Debt Securities [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	2,974	2,824
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Private label [Member]
Assets Fair Value Disclosure [Abstract]
Available For Sale Securities	11,116	13,914
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Interest Rate Cap [Member] | Purchase [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Interest Rate Cap [Member] | Written [Member]
Derivative Liabilities [Abstract]
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Forward Contracts [Member]
Derivative Liabilities [Abstract]
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Interest Rate Lock Commitments [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Forward loan sales commitments [Member]
Assets Fair Value Disclosure [Abstract]
Derivative Assets	$ 0	$ 0

FAIR VALUE - Fair Value of Asse

FAIR VALUE - Fair Value of Assets and Liabilities Measured on Recurring Basis (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value Inputs Level 3 [Member]
Fair Value Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 17,238	$ 19,855	$ 22,914
Total gains or (losses) (realized/unrealized):
Included in earnings	(497)	(50)	0
Included in other comprehensive income	714	222	2,777
Purchases	0	500	0
Principal Repayments And Amortization	(2,865)	(3,289)	(5,836)
Ending balance	14,590	17,238	19,855
Available-for-sale Securities [Member]
Total gains or (losses) (realized/unrealized):
Included in earnings	$ 497	$ 50	$ 0

FAIR VALUE - Assets and Liabi_2

FAIR VALUE - Assets and Liabilities Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) (Detail) $ in Thousands	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale	$ 2,123,525	$ 1,942,568
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Private label [Member] | Valuation Technique, Discounted Cash Flow [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale	11,116	13,914
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Puerto Rico government obligations [Member] | Valuation Technique, Discounted Cash Flow [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale	$ 2,974	$ 2,824
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Minimum [Member] | Private label [Member] | Measurement Input, Discount Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.137	0.145
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Minimum [Member] | Private label [Member] | Measurement Input, Constant Prepayment Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.068	0.033
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Minimum [Member] | Private label [Member] | Measurement Input, Loss Severity [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Minimum [Member] | Puerto Rico government obligations [Member] | Measurement Input, Discount Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.069	0.063
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Minimum [Member] | Puerto Rico government obligations [Member] | Measurement Input, Constant Prepayment Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.030	0.030
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Maximum [Member] | Private label [Member] | Measurement Input, Discount Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.137	0.145
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Maximum [Member] | Private label [Member] | Measurement Input, Constant Prepayment Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.103	0.209
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Maximum [Member] | Private label [Member] | Measurement Input, Loss Severity [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.074	0.068
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Maximum [Member] | Puerto Rico government obligations [Member] | Measurement Input, Discount Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.069	0.063
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Maximum [Member] | Puerto Rico government obligations [Member] | Measurement Input, Constant Prepayment Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.030	0.030
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Weighted Average [Member] | Private label [Member] | Measurement Input, Discount Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.137	0.145
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Weighted Average [Member] | Private label [Member] | Measurement Input, Constant Prepayment Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.079	0.114
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Weighted Average [Member] | Private label [Member] | Measurement Input, Loss Severity [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.028	0.030
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Weighted Average [Member] | Puerto Rico government obligations [Member] | Measurement Input, Discount Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.069	0.063
Fair Value, Measurements, Recurring [Member] | Fair Value Inputs Level 3 [Member] | Weighted Average [Member] | Puerto Rico government obligations [Member] | Measurement Input, Constant Prepayment Rate [Member]
Debt Securities, Available-for-sale, Sale [Abstract]
Debt Securities, Available-for-sale, Measurement Input	0.030	0.030

FAIR VALUE - Change in unrealiz

FAIR VALUE - Change in unrealized losses included in earnings (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Available-for-sale Securities [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Net impairment losses on available-for-sale investment securities credit component	$ (497)	$ (50)	$ 0

FAIR VALUE - Impairment of Valu

FAIR VALUE - Impairment of Valuation Adjustments were Recorded for Assets Recognized at Fair Value (Detail) - Fair Value Measurements Nonrecurring [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Fair Value Inputs Level 1 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans receivable	$ 0	$ 0	$ 0
Other Real Estate Owned	0	0	0
Mortgage servicing rights			0
Fair Value Inputs Level 2 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans receivable	0	0	0
Other Real Estate Owned	0	0	0
Mortgage servicing rights			0
Fair Value Inputs Level 3 [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Loans receivable	217,252	365,726	410,428
Other Real Estate Owned	101,626	131,402	147,940
Mortgage servicing rights			25,255
Loans held for sale		16,111
Fair Value Inputs Level 3 [Member] | OREO [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets Fair Value Adjustment	(6,572)	(11,499)	(8,511)
Fair Value Inputs Level 3 [Member] | Mortgage Servicing Rights [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets Fair Value Adjustment			(1,611)
Fair Value Inputs Level 3 [Member] | Loans Held For Sale [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets Fair Value Adjustment	(10,102)
Fair Value Inputs Level 3 [Member] | Loans Receivable [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets Fair Value Adjustment	$ (18,013)	$ (29,799)	$ (39,493)

FAIR VALUE - Impairment of Va_2

FAIR VALUE - Impairment of Valuation Adjustments were Recorded for Assets Recognized at Fair Value (Parenthetical) (Detail) - Fair Value Inputs Level 3 [Member] - Fair Value Measurements Nonrecurring [Member]	Dec. 31, 2017
Measurement Input, Constant Prepayment Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	0.0630
Measurement Input, Discount Rate [Member]
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Servicing Asset, Measurement Input	0.1123

FAIR VALUE - Fair Value (Detail

FAIR VALUE - Fair Value (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Assets:
Investment securities available for sale	$ 2,123,525	$ 1,942,568
Held To Maturity Securities Amortized	138,675	144,815
Total gross loans held for investment portfolio	9,002,205	8,858,123	$ 8,850,476
Less: allowance for loan and lease losses	(155,139)	(196,362)	$ (231,843)	$ (205,603)
Loans, net of allowance for loan and lease losses	8,847,066	8,661,761
Financial Instruments Financial Liabilities Balance Sheet Groupings [Abstract]
Other borrowings	184,150	184,150
Carrying Reported Amount Fair Value Disclosure [Member]
Assets:
Cash and due from banks and money market investments	644,099	586,203
Investment securities available for sale	2,123,525	1,942,568
Held To Maturity Securities Amortized	138,675	144,815
Equity Securities	38,249	44,530
Loans held for sale	39,477	43,186
Total gross loans held for investment portfolio	9,002,205	8,858,123
Less: allowance for loan and lease losses	(155,139)	(196,362)
Loans, net of allowance for loan and lease losses	8,847,066	8,661,761
Derivative Assets	372	1,018
Financial Instruments Financial Liabilities Balance Sheet Groupings [Abstract]
Deposits	9,348,429	8,994,714
Securities sold under agreements to repurchase	100,000	150,086
Advances from FHLB	570,000	740,000
Other borrowings	184,150	184,150
Derivative Liabilities	149	1,000
Estimate Of Fair Value Fair Value Disclosure [Member]
Assets:
Cash and due from banks and money market investments	644,099	586,203
Investment securities available for sale	2,123,525	1,942,568
Held To Maturity Securities Amortized	110,374	125,658
Equity Securities	38,249	44,530
Loans held for sale	40,234	43,831
Loans, net of allowance for loan and lease losses	8,715,144	8,213,144
Derivative Assets	372	1,018
Financial Instruments Financial Liabilities Balance Sheet Groupings [Abstract]
Deposits	9,372,591	9,005,679
Securities sold under agreements to repurchase	120,020	169,366
Advances from FHLB	578,498	730,253
Other borrowings	180,577	177,201
Derivative Liabilities	149	1,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Fair Value Inputs Level 1 [Member]
Assets:
Cash and due from banks and money market investments	644,099	586,203
Investment securities available for sale	7,479	7,456
Held To Maturity Securities Amortized	0	0
Equity Securities	1,428	418
Loans held for sale	0	0
Loans, net of allowance for loan and lease losses	0	0
Derivative Assets	0	0
Financial Instruments Financial Liabilities Balance Sheet Groupings [Abstract]
Deposits	0	0
Securities sold under agreements to repurchase	0	0
Advances from FHLB	0	0
Other borrowings	0	0
Derivative Liabilities	0	0
Estimate Of Fair Value Fair Value Disclosure [Member] | Fair Value Inputs Level 2 [Member]
Assets:
Cash and due from banks and money market investments	0	0
Investment securities available for sale	2,101,456	1,917,874
Held To Maturity Securities Amortized	0	0
Equity Securities	36,821	44,112
Loans held for sale	40,234	27,720
Loans, net of allowance for loan and lease losses	0	0
Derivative Assets	372	1,018
Financial Instruments Financial Liabilities Balance Sheet Groupings [Abstract]
Deposits	9,372,591	9,005,679
Securities sold under agreements to repurchase	120,020	169,366
Advances from FHLB	578,498	730,253
Other borrowings	0	0
Derivative Liabilities	149	1,000
Estimate Of Fair Value Fair Value Disclosure [Member] | Fair Value Inputs Level 3 [Member]
Assets:
Cash and due from banks and money market investments	0	0
Investment securities available for sale	14,590	17,238
Held To Maturity Securities Amortized	110,374	125,658
Equity Securities	0	0
Loans held for sale	0	16,111
Loans, net of allowance for loan and lease losses	8,715,144	8,213,144
Derivative Assets	0	0
Financial Instruments Financial Liabilities Balance Sheet Groupings [Abstract]
Deposits	0	0
Securities sold under agreements to repurchase	0	0
Advances from FHLB	0	0
Other borrowings	180,577	177,201
Derivative Liabilities	$ 0	$ 0

REVENUE FROM CONTRACT WITH CUST

REVENUE FROM CONTRACT WITH CUSTOMERS (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation Of Revenue [Line Items]
Net interest income	$ 567,081	$ 525,383	$ 491,551
Noninterest Income	90,572	82,310	$ 62,387
Total Revenues	657,653	607,693
Service charges and fees on deposit accounts [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	23,916	21,668
Insurance commissions [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	10,186	8,431
Total Revenues	3,000	2,400
Merchant-related income [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	5,635	5,243
Credit and debit card fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	20,905	21,442
Other service charges and fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	8,789	7,870
Not inscope of Topic 606 [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	21,141	17,656
Mortgage Banking Segment [Member]
Disaggregation Of Revenue [Line Items]
Net interest income	68,803	79,389
Noninterest Income	16,825	17,073
Total Revenues	85,628	96,462
Mortgage Banking Segment [Member] | Service charges and fees on deposit accounts [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	0
Mortgage Banking Segment [Member] | Insurance commissions [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	0
Mortgage Banking Segment [Member] | Merchant-related income [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	0
Mortgage Banking Segment [Member] | Credit and debit card fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	0
Mortgage Banking Segment [Member] | Other service charges and fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	216	252
Mortgage Banking Segment [Member] | Not inscope of Topic 606 [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	16,609	16,821
Consumer Retail Banking Segment [Member]
Disaggregation Of Revenue [Line Items]
Net interest income	244,535	217,933
Noninterest Income	51,729	47,706
Total Revenues	296,264	265,639
Consumer Retail Banking Segment [Member] | Service charges and fees on deposit accounts [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	14,534	13,332
Consumer Retail Banking Segment [Member] | Insurance commissions [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	9,621	7,889
Consumer Retail Banking Segment [Member] | Merchant-related income [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	4,120	3,561
Consumer Retail Banking Segment [Member] | Credit and debit card fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	19,014	17,538
Consumer Retail Banking Segment [Member] | Other service charges and fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	3,012	4,391
Consumer Retail Banking Segment [Member] | Not inscope of Topic 606 [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	1,428	995
Commercial And Corporate Segment [Member]
Disaggregation Of Revenue [Line Items]
Net interest income	91,266	78,675
Noninterest Income	11,714	5,158
Total Revenues	102,980	83,833
Commercial And Corporate Segment [Member] | Service charges and fees on deposit accounts [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	5,811	4,965
Commercial And Corporate Segment [Member] | Insurance commissions [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	0
Commercial And Corporate Segment [Member] | Merchant-related income [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	466	748
Commercial And Corporate Segment [Member] | Credit and debit card fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	104	1,225
Commercial And Corporate Segment [Member] | Other service charges and fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	2,690	1,280
Commercial And Corporate Segment [Member] | Not inscope of Topic 606 [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	2,643	(3,060)
Treasury And Investments Segment [Member]
Disaggregation Of Revenue [Line Items]
Net interest income	73,626	61,628
Noninterest Income	(225)	2,505
Total Revenues	73,401	64,133
Treasury And Investments Segment [Member] | Service charges and fees on deposit accounts [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	0
Treasury And Investments Segment [Member] | Insurance commissions [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	0
Treasury And Investments Segment [Member] | Merchant-related income [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	0
Treasury And Investments Segment [Member] | Credit and debit card fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	0
Treasury And Investments Segment [Member] | Other service charges and fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	71
Treasury And Investments Segment [Member] | Not inscope of Topic 606 [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	(225)	2,434
United States Operations Segment [Member]
Disaggregation Of Revenue [Line Items]
Net interest income	62,539	59,056
Noninterest Income	2,807	3,020
Total Revenues	65,346	62,076
United States Operations Segment [Member] | Service charges and fees on deposit accounts [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	631	559
United States Operations Segment [Member] | Insurance commissions [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	67	87
United States Operations Segment [Member] | Merchant-related income [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	0	0
United States Operations Segment [Member] | Credit and debit card fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	43	618
United States Operations Segment [Member] | Other service charges and fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	1,558	1,351
United States Operations Segment [Member] | Not inscope of Topic 606 [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	508	405
Virgin Islands Operations Segment [Member]
Disaggregation Of Revenue [Line Items]
Net interest income	26,312	28,702
Noninterest Income	7,722	6,848
Total Revenues	34,034	35,550
Virgin Islands Operations Segment [Member] | Service charges and fees on deposit accounts [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	2,940	2,812
Virgin Islands Operations Segment [Member] | Insurance commissions [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	498	455
Virgin Islands Operations Segment [Member] | Merchant-related income [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	1,049	934
Virgin Islands Operations Segment [Member] | Credit and debit card fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	1,744	2,061
Virgin Islands Operations Segment [Member] | Other service charges and fees [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	1,313	525
Virgin Islands Operations Segment [Member] | Not inscope of Topic 606 [Member]
Disaggregation Of Revenue [Line Items]
Noninterest Income	$ 178	$ 61

REVENUE FROM CONTRACTS WITH C_3

REVENUE FROM CONTRACTS WITH CUSTOMERS - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Revenue from External Customer [Line Items]
Contract With Customer Liability	$ 2,476	$ 2,071	$ 2,396
Revenues	657,653	607,693
Decrease in Contract with Customer, Liability	(300)
Additions To Contract Liability	$ 730	0
Required Visa Debit Portfolio Ratio	50.00%
Insurance commissions [Member]
Revenue from External Customer [Line Items]
Revenues	$ 3,000	$ 2,400
Growth Agreement [Member]
Revenue from External Customer [Line Items]
Term of contract liability	2 years
Revenue Sharing [Member]
Revenue from External Customer [Line Items]
Term of contract liability	10 years

REVENUE FROM CONTRACT WITH CU_2

REVENUE FROM CONTRACT WITH CUSTOMERS - Activity of Contract Liability (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Contract with Customer, Liability [Abstract]
Beginning balance	$ 2,071	$ 2,396
Additions	730	0
Amortization	(325)	(325)
Ending balance	$ 2,476	$ 2,071

SUPPLEMENTAL CASH FLOW INFORM_3

SUPPLEMENTAL CASH FLOW INFORMATION - Supplemental Cash Flow Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jan. 31, 2019
Cash paid for:
Interest on borrowings	$ 107,010	$ 98,194	$ 93,634
Income tax	13,495	7,175	4,037
Operating cash flow from operating leases	10,219	0	0
Non-cash investing and financing activities:
Additions to OREO	40,398	48,767	47,711
Additions to auto and other repossed properties	47,643	52,023	40,987
Capitalization of servicing assets	4,039	3,864	3,318
Loan securitizations	235,258	233,175	235,074
Loans held for investment transferred to held for sale	24,470	90,319	0
Loans held for sale transferred to held for investment	0	2,179	10,234
Property plant and equipment transferred to other assets	0	0	1,185
ROU asset obtained in exchange for operating lease liabilities	10,762	0	0
Adoption of lease accounting standard:
ROU assets operating leases	61,327
Operating Lease Liability	64,259
Accounting Standards Update 2016-02 [Member]
Adoption of lease accounting standard:
ROU assets operating leases	57,178	0	0	$ 59,600
Operating Lease Liability	$ 59,818	$ 0	$ 0	$ 62,100

REGULATORY MATTERS, COMMITMEN_3

REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES - Additional Information (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Basel III [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Capital Conservation Buffer	2.50%
Common Equity Tier 1 Capital Conservation Buffer First Year	0.625%
Basel III [Member] | Minimum [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Common Equity Tier 1 Captial (to Risk-Weighted Assets) Required For Captial Adequacy Ratio	4.50%
Common equity tier 1 capital to risk weight assets ratio plus common equity tier1 capital conservation buffer	7.00%
Tier 1 Capital (to Risk-Weighted Assets) Required For Capital Adequacy Ratio	6.00%
Total Tier 1 Capital To Risk Weight Assets Ratio Plus Common Equity Tier 1 Capital Conservation Buffer	8.50%
Total Capital (to Risk-Weighted Assets) Required For Capital Adequacy Ratio	8.00%
Total Tier 1 Capital And Tier 2 Capital To Risk Weight Assets Ratio Plus Common Equity Tier 1 Capital Conservation Buffer	10.50%
Leverage Ratio Required For Capital Adequancy Ratio	4.00%
Government National Mortgage Association Certificates and Obligations (GNMA) [Member]
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
FHA/VA mortgage loan production sold into GNMA mortgage-backed securities	$ 235.3	$ 233.2

REGULATORY MATTERS, COMMITMEN_4

REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES - Regulatory capital positions (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
First BanCorp [Member]
Commitments and Contingencies Disclosure [Abstract]
Total Capital Required For Capital Adequacy	$ 725,236	$ 706,418
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk-Weighted Assets) Actual	$ 2,286,337	$ 2,118,940
Total Capital (to Risk-Weighted Assets) Actual Ratio	25.22%	24.00%
Total Capital (to Risk-Weighted Assets) Required For Capital Adequacy	$ 725,236	$ 706,418
Total Capital (to Risk-Weighted Assets) Required For Capital Adequacy Ratio	8.00%	8.00%
Common Equity Tier 1 Capital (to Risk-Weighted Assets) Actual	$ 1,957,887	$ 1,792,880
Common Equity Tier 1 Capital (to Risk-Weighted Assets) Actual Ratio	21.60%	20.30%
Common Equity Tier 1 Captial (to Risk-Weighted Assets) Required For Captial Adequacy	$ 407,946	$ 397,360
Common Equity Tier 1 Captial (to Risk-Weighted Assets) Required For Captial Adequacy Ratio	4.50%	4.50%
Tier 1 Capital (to Risk-Weighted Assets) Actual	$ 1,993,991	$ 1,828,984
Tier 1 Captial (to Risk-Weighted Assets) Actual Ratio	22.00%	20.71%
Tier 1 Capital (to Risk-Weighted Assets) Required For Capital Adequacy	$ 543,927	$ 529,814
Tier 1 Capital (to Risk-Weighted Assets) Required For Capital Adequacy Ratio	6.00%	6.00%
Leverage Ratio Actual Amount	$ 1,993,991	$ 1,828,984
Leverage Ratio Actual Ratio	16.15%	15.37%
Leverage Ratio Required For Captial Adequacy	$ 493,786	$ 475,924
Leverage Ratio Required For Capital Adequancy Ratio	4.00%	4.00%
FirstBank [Member]
Commitments and Contingencies Disclosure [Abstract]
Total Capital Required For Capital Adequacy	$ 725,047	$ 706,426
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items]
Total Capital (to Risk-Weighted Assets) Actual	$ 2,242,262	$ 2,075,894
Total Capital (to Risk-Weighted Assets) Actual Ratio	24.74%	23.51%
Total Capital (to Risk-Weighted Assets) Required For Capital Adequacy	$ 725,047	$ 706,426
Total Capital (to Risk-Weighted Assets) Required For Capital Adequacy Ratio	8.00%	8.00%
Total Capital (to Risk-Weighted Assets) Required To Be Well Capitalized	$ 906,309	$ 883,032
Total Capital (to Risk-Weighted Assets) Required To Be Well Capitalized Ratio	10.00%	10.00%
Common Equity Tier 1 Capital (to Risk-Weighted Assets) Actual	$ 1,820,571	$ 1,656,563
Common Equity Tier 1 Capital (to Risk-Weighted Assets) Actual Ratio	20.09%	18.76%
Common Equity Tier 1 Captial (to Risk-Weighted Assets) Required For Captial Adequacy	$ 407,839	$ 397,365
Common Equity Tier 1 Captial (to Risk-Weighted Assets) Required For Captial Adequacy Ratio	4.50%	4.50%
Common Equity Tier 1 Captial (to Risk-Weighted Assets) Required To Be Well Capitalized	$ 589,101	$ 573,971
Common Equity Tier 1 Captial (to Risk-Weighted Assets) Required To Be Well Capitalized Ratio	6.50%	6.50%
Tier 1 Capital (to Risk-Weighted Assets) Actual	$ 2,128,571	$ 1,964,563
Tier 1 Captial (to Risk-Weighted Assets) Actual Ratio	23.49%	22.25%
Tier 1 Capital (to Risk-Weighted Assets) Required For Capital Adequacy	$ 543,785	$ 529,819
Tier 1 Capital (to Risk-Weighted Assets) Required For Capital Adequacy Ratio	6.00%	6.00%
Tier 1 Capital (to Risk-Weighted Assets) Required To Be Well Capitalized	$ 725,047	$ 706,426
Tier 1 Capital (to Risk-Weighted Assets) Required To Be Well Capitalized Ratio	8.00%	8.00%
Leverage Ratio Actual Amount	$ 2,128,571	$ 1,964,563
Leverage Ratio Actual Ratio	17.26%	16.53%
Leverage Ratio Required For Captial Adequacy	$ 493,242	$ 475,490
Leverage Ratio Required For Capital Adequancy Ratio	4.00%	4.00%
Leverage Ratio Required To Be Well Capitalized	$ 616,552	$ 594,362
Leverage Ratio Required To Be Well Capitalized Ratio	5.00%	5.00%

REGULATORY MATTERS - Summary of

REGULATORY MATTERS - Summary of Commitments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Commercial Letters Of Credit [Member]
Other Commitments [Line Items]
Financial instruments whose contract amounts represent credit risk	$ 82,281	$ 69,664
Standby letters of credit [Member] [Member]
Other Commitments [Line Items]
Financial instruments whose contract amounts represent credit risk	4,452	2,865
Commercial lines of credit [Member]
Other Commitments [Line Items]
Financial instruments whose contract amounts represent credit risk	533,230	455,344
Unused personal lines of credit [Member]
Other Commitments [Line Items]
Financial instruments whose contract amounts represent credit risk	722,761	722,510
Construction undisbursed funds [Member]
Other Commitments [Line Items]
Financial instruments whose contract amounts represent credit risk	$ 185,569	$ 160,905

DERIVATIVE INSTRUMENTS AND HE_3

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narratives (Detail) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Credit risk of related to derivative instruments with positive fair values	$ 0.4	$ 1

DERIVATIVE INSTRUMENTS AND HE_4

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Notional Amounts of All Derivative Instruments (Detail) - Not Designated as Hedging Instrument, Economic Hedge [Member] - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Economic undesignated hedges:
Derivative Notional Amount	$ 94,894	$ 188,081
Sale of TBA GNMA MBS pools
Economic undesignated hedges:
Derivative Notional Amount	35,000	33,000
Forward loan sales commitments [Member]
Economic undesignated hedges:
Derivative Notional Amount	6,418	6,339
Interest Rate Lock Commitments [Member]
Economic undesignated hedges:
Derivative Notional Amount	11,456	11,722
Interest Rate Cap [Member] | Written [Member]
Economic undesignated hedges:
Derivative Notional Amount	21,010	68,510
Interest Rate Cap [Member] | Purchase [Member]
Economic undesignated hedges:
Derivative Notional Amount	$ 21,010	$ 68,510

DERIVATIVE INSTRUMENTS AND HE_5

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Summary of Fair Value of Derivative Instruments and Location in Statement of Financial Condition (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Derivatives Fair Value [Line Items]
Other Assets	$ 213,513	$ 171,066
Accrued Liabilities and Other Liabilities	180,614	129,907
Not Designated as Hedging Instrument, Economic Hedge [Member]
Derivatives Fair Value [Line Items]
Derivative Assets	372	1,018
Derivative Liabilities	149	1,000
Not Designated as Hedging Instrument, Economic Hedge [Member] | Sale of TBA GNMA MBS pools
Derivatives Fair Value [Line Items]
Other Assets	0	0
Accrued Liabilities and Other Liabilities	138	383
Not Designated as Hedging Instrument, Economic Hedge [Member] | Forward loan sales commitments [Member]
Derivatives Fair Value [Line Items]
Other Assets	20	12
Accrued Liabilities and Other Liabilities	0	0
Not Designated as Hedging Instrument, Economic Hedge [Member] | Interest Rate Lock Commitments [Member]
Derivatives Fair Value [Line Items]
Other Assets	341	383
Accrued Liabilities and Other Liabilities	0	0
Not Designated as Hedging Instrument, Economic Hedge [Member] | Interest Rate Cap [Member] | Written [Member]
Derivatives Fair Value [Line Items]
Other Assets	0	0
Accrued Liabilities and Other Liabilities	11	617
Not Designated as Hedging Instrument, Economic Hedge [Member] | Interest Rate Cap [Member] | Purchase [Member]
Derivatives Fair Value [Line Items]
Other Assets	11	623
Accrued Liabilities and Other Liabilities	$ 0	$ 0

DERIVATIVE INSTRUMENTS AND HE_6

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Effect of Derivative Instruments on Statement of Income (Loss) (Detail) - Not Designated as Hedging Instrument, Economic Hedge [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Economic undesignated hedges:
Total gain (loss) on derivatives	$ 471	$ 46	$ 187
Sale of TBA GNMA MBS pools | Mortgage Banking Activities
Economic undesignated hedges:
Total gain (loss) on derivatives	245	(371)	189
Forward loan sales commitments [Member] | Mortgage Banking Activities
Economic undesignated hedges:
Total gain (loss) on derivatives	8	12	0
Interest Rate Lock Commitments [Member] | Mortgage Banking Activities
Economic undesignated hedges:
Total gain (loss) on derivatives	224	383	0
Interest Rate Cap [Member] | Mortgage Banking Activities | Interest Income Member
Economic undesignated hedges:
Total gain (loss) on derivatives	$ (6)	$ 22	$ (2)

OFFSETTING OF ASSETS AND LIAB_3

OFFSETTING OF ASSETS AND LIABILITIES - Offsetting of financial assets and liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Offsetting [Abstract]
Gross amount recognized of derivative asset	$ 11	$ 623
Gross amount of derivatives assets offset	0	0
Net asset amount of assets presented in the Statement of Financial Condition	11	623
Obligation to return Financial instrument, derivatives assets	0	0
Obligation to return Cash Collateral, derivative assets	(11)	(623)
Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral	0	0
Gross amount recognized of repurchase agreements	300,000	350,086
Gross amount of repurchase agreements offset	(200,000)	(200,000)
Net repurchase agreements amount offset presented	100,000	150,086
Right to claim Financial instrument, repurchase agreements	(100,000)	(150,086)
Right to claim Cash Collateral, repurchase agreements	0	0
Securities Sold Under Agreements To Repurchase Amount Offset Against Collateral	0	0
Securities Purchased Under Agreements To Resell Gross	200,000	200,000
Securities Purchased Under Agreements To Resell Liability	(200,000)	(200,000)
Securities Purchased Under Agreements To Resell Not Offset	0	0
Securities Purchased Under Agreements To Resell Collateral Obligation To Return Securities	0	0
Securities Purchased Under Agreements To Resell Collateral Obligation To Return Cash	0	0
Securities Purchased Under Agreements To Resell Amount Offset Against Collateral	0	0
Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Gross	200,011	200,623
Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Liability	(200,000)	(200,000)
Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Liability Not Offset	11	623
Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Collateral Obligation To Return Securities	0	0
Derivative Asset, Securities Purchased under Agreements to Resell, Securities Borrowed, Collateral, Obligation to Return Cash	(11)	(623)
Derivative Asset Securities Purchased Under Agreements To Resell Securities Borrowed Amount Offset Against Collateral	$ 0	$ 0

SEGMENT INFORMATION - Additiona

SEGMENT INFORMATION - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019numberofreportableunits
Segment Reporting [Abstract]
Number of reportable segments	6

SEGMENT INFORMATION - Informati

SEGMENT INFORMATION - Information about Reportable Segments (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Interest income	$ 675,897	$ 624,967	$ 588,423
Interest expense	(108,816)	(99,584)	(96,872)
Net interest income (loss)	567,081	525,383	491,551
Provision (release)	40,225	59,253	144,254
Non-interest income	90,572	82,310	62,387
Operating Segments [Member]
Segment Reporting Information [Line Items]
Interest income	675,897	624,967	588,423
Net (charge) credit for transfer of funds	0	0	0
Interest expense	(108,816)	(99,584)	(96,872)
Net interest income (loss)	567,081	525,383	491,551
Provision (release)	40,225	59,253	144,254
Non-interest income	90,572	82,310	62,387
Direct non-interest expenses	(252,191)	(250,255)	(242,277)
Segment income	365,237	298,185	167,407
Average earnings assets	11,497,408	11,265,470	11,035,328
Mortgage Banking Segment [Member]
Segment Reporting Information [Line Items]
Net interest income (loss)	68,803	79,389
Non-interest income	16,825	17,073
Mortgage Banking Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Interest income	120,981	127,042	131,718
Net (charge) credit for transfer of funds	(52,178)	(47,653)	(45,759)
Interest expense	0	0	0
Net interest income (loss)	68,803	79,389	85,959
Provision (release)	13,499	13,083	47,713
Non-interest income	16,825	17,073	12,825
Direct non-interest expenses	(34,825)	(38,213)	(36,403)
Segment income	37,304	45,166	14,668
Average earnings assets	2,161,772	2,258,974	2,451,655
Consumer Retail Banking Segment [Member]
Segment Reporting Information [Line Items]
Net interest income (loss)	244,535	217,933
Non-interest income	51,729	47,706
Consumer Retail Banking Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Interest income	216,066	181,166	173,690
Net (charge) credit for transfer of funds	66,675	65,092	27,475
Interest expense	(38,206)	(28,325)	(25,240)
Net interest income (loss)	244,535	217,933	175,925
Provision (release)	41,043	23,516	53,778
Non-interest income	51,729	47,706	43,924
Direct non-interest expenses	(116,854)	(112,176)	(108,165)
Segment income	138,367	129,947	57,906
Average earnings assets	1,960,352	1,636,002	1,749,148
Commercial And Corporate Segment [Member]
Segment Reporting Information [Line Items]
Net interest income (loss)	91,266	78,675
Non-interest income	11,714	5,158
Commercial And Corporate Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Interest income	148,224	138,706	128,871
Net (charge) credit for transfer of funds	(56,958)	(60,031)	(36,904)
Interest expense	0	0	0
Net interest income (loss)	91,266	78,675	91,967
Provision (release)	(17,565)	4,804	33,296
Non-interest income	11,714	5,158	7,176
Direct non-interest expenses	(34,718)	(32,371)	(35,142)
Segment income	85,827	46,658	30,705
Average earnings assets	2,489,933	2,530,635	2,489,948
Treasury And Investments Segment [Member]
Segment Reporting Information [Line Items]
Net interest income (loss)	73,626	61,628
Non-interest income	(225)	2,505
Treasury And Investments Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Interest income	63,175	61,913	48,071
Net (charge) credit for transfer of funds	47,477	44,540	56,865
Interest expense	(37,026)	(44,825)	(49,577)
Net interest income (loss)	73,626	61,628	55,359
Provision (release)	0	0	0
Non-interest income	(225)	2,505	(10,206)
Direct non-interest expenses	(2,729)	(2,966)	(3,376)
Segment income	70,672	61,167	41,777
Average earnings assets	2,487,084	2,552,130	2,215,551
United States Operations Segment [Member]
Segment Reporting Information [Line Items]
Net interest income (loss)	62,539	59,056
Non-interest income	2,807	3,020
United States Operations Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Interest income	97,406	83,971	69,760
Net (charge) credit for transfer of funds	(5,016)	(1,948)	(1,677)
Interest expense	(29,851)	(22,967)	(18,902)
Net interest income (loss)	62,539	59,056	49,181
Provision (release)	7,296	11,882	3,644
Non-interest income	2,807	3,020	2,664
Direct non-interest expenses	(34,070)	(33,566)	(32,197)
Segment income	23,980	16,628	16,004
Average earnings assets	1,931,015	1,750,155	1,525,191
Virgin Islands Operations Segment [Member]
Segment Reporting Information [Line Items]
Net interest income (loss)	26,312	28,702
Non-interest income	7,722	6,848
Virgin Islands Operations Segment [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Interest income	30,045	32,169	36,313
Net (charge) credit for transfer of funds	0	0	0
Interest expense	(3,733)	(3,467)	(3,153)
Net interest income (loss)	26,312	28,702	33,160
Provision (release)	(4,048)	5,968	5,823
Non-interest income	7,722	6,848	6,004
Direct non-interest expenses	(28,995)	(30,963)	(26,994)
Segment income	9,087	(1,381)	6,347
Average earnings assets	$ 467,252	$ 537,574	$ 603,835

SEGMENT INFORMATION - Reconcili

SEGMENT INFORMATION - Reconciliation of Reportable Segment Financial Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Net Income (Loss):
Total before tax	$ 239,372	$ 190,638	$ 61,983
Income tax (benefit) expense	(71,995)	10,970	4,973
Net income	167,377	201,608	66,956
Segment Reconciling Items [Member]
Net Income (Loss):
Segment income	365,237	298,185	167,407
Other operating expenses	(125,865)	(107,547)	(105,424)
Total before tax	239,372	190,638	61,983
Income tax (benefit) expense	71,995	(10,970)	(4,973)
Net income	167,377	201,608	66,956
Average assets:
Total average earning assets for segments	11,497,408	11,265,470	11,035,328
Average non-earning assets	954,726	940,731	937,950
Total consolidated average assets	$ 12,452,134	$ 12,206,201	$ 11,973,278

SEGMENT INFORMATION - revenues

SEGMENT INFORMATION - revenues and selected balance sheet data by geography based on the location (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total revenues	$ 766,469	$ 707,277	$ 650,810
Total assets	12,611,266	12,243,561
Total gross loans held for investment portfolio	9,002,205	8,858,123	8,850,476
Deposits	9,348,429	8,994,714
Brokered certificates of deposit	435,089	555,597
Puerto Rico [Member]
Segment Reporting Information [Line Items]
Total revenues	628,489	581,269	536,069
Total assets	10,059,890	9,797,267	9,871,272
Total gross loans held for investment portfolio	6,695,953	6,586,033	6,633,432
Deposits	6,422,864	6,208,531	6,268,056
Brokered certificates of deposit	243,400	441,100	1,000,000
United States [Member]
Segment Reporting Information [Line Items]
Total revenues	100,213	86,991	72,424
Total assets	2,048,260	1,940,633	1,780,654
Total gross loans held for investment portfolio	1,879,346	1,834,088	1,665,448
Deposits	1,661,657	1,519,362	1,637,941
Brokered certificates of deposit	191,700	114,500	158,000
Virgin Islands [Member]
Segment Reporting Information [Line Items]
Total revenues	37,767	39,017	42,317
Total assets	503,116	505,661	609,342
Total gross loans held for investment portfolio	466,383	481,188	584,576
Deposits	$ 1,263,908	$ 1,266,821	$ 1,116,634

FIRST BANCORP. (Holding Compa_3

FIRST BANCORP. (Holding Company Only) Financial Information - Statements of Financial Condition (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks	$ 546,391	$ 578,613	$ 705,980
Money market investments	97,708	7,590	10,415
Other assets	213,513	171,066
Total assets	12,611,266	12,243,561
Liabilities:
Other borrowings	184,150	184,150
Accounts payable and other liabilities	180,614	129,907
Liabilities	10,383,193	10,198,857
Stockholders Equity	2,228,073	2,044,704	1,869,097
Total liabilities and stockholders' equity	12,611,266	12,243,561
Holding Company [Member]
ASSETS
Cash and due from banks	16,895	10,984
Money market investments	6,211	6,111	$ 6,111
Other investment securities	285	285
Other assets	509	12,219
Total assets	2,416,601	2,232,558
Liabilities:
Other borrowings	184,150	184,150
Accounts payable and other liabilities	4,378	3,704
Liabilities	188,528	187,854
Stockholders Equity	2,228,073	2,044,704
Total liabilities and stockholders' equity	2,416,601	2,232,558
Holding Company [Member] | Firstbank Puerto Rico [Member]
ASSETS
Equity Method Investments	2,362,182	2,179,655
Holding Company [Member] | FirstBank Insurance Agency
ASSETS
Equity Method Investments	24,995	17,780
Holding Company [Member] | FBP Statutory Trust I [Member]
ASSETS
Equity Method Investments	1,963	1,963
Holding Company [Member] | FBP Statutory Trust II [Member]
ASSETS
Equity Method Investments	$ 3,561	$ 3,561

FIRST BANCORP. (Holding Compa_4

FIRST BANCORP. (Holding Company Only) Financial Information - Statements of Income (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income:
Interest income on money market investments	$ 59,546	$ 60,224	$ 51,125
Interest income on loans	602,998	553,647	532,684
Total interest and dividends on investments	72,899	71,320	55,739
Expense:
Gain on early extinguishment of debt	0	2,316	1,391
Total income tax provision	71,995	(10,970)	(4,973)
Net income	167,377	201,608	66,956
Other comprehensive (loss) income, net of tax	47,179	(19,806)	13,775
Comprehensive income	214,556	181,802	80,731
Holding Company [Member]
Income:
Interest income on money market investments	233	20	20
Interest income on loans	0	105	0
Other Interest And Dividend Income	283	275	262
Total interest and dividends on investments	42,759	38,184	10,482
Expense:
Other borrowings	9,424	8,983	8,284
Other operating expenses	2,131	2,489	3,175
Total operating expenses	11,555	11,472	11,459
Gain on early extinguishment of debt	0	2,316	1,391
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments	31,204	29,028	414
Total income tax provision	2,752	0	45
Equity in undistributed earnings of subsidiaries	138,925	172,580	66,587
Net income	167,377	201,608	66,956
Other comprehensive (loss) income, net of tax	47,179	(19,806)	13,775
Comprehensive income	214,556	181,802	80,731
Investment In Banking Subsidiary [Member] | Holding Company [Member]
Income:
Dividend income	42,243	37,784	7,200
Non Banking Subsidiary [Member] | Holding Company [Member]
Income:
Dividend income	$ 0	$ 0	$ 3,000

FIRST BANCORP. (Holding Compa_5

FIRST BANCORP. (Holding Company Only) Financial Information - Statements of Cash Flows (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Cash flows from operating activities:
Net income	$ 167,377	$ 201,608	$ 66,956
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	3,949	5,825	7,296
Gain on early extinguishment of debt	0	(2,316)	(1,391)
Net decrease (increase) in other assets	(32,521)	(8,906)	202
Net increase (decrease) in other liabilities	(5,002)	(1,785)	8,305
Net cash provided by operating activities	294,284	288,323	235,964
Cash flows from investing activities:
Net cash provided by investing activities	(342,968)	(223,258)	(73,256)
Cash flows from financing activities:
Repurchase of outstanding common stock	(1,959)	(2,827)	(2,497)
Dividends paid on common stock	(30,356)	(6,517)	0
Dividends paid on preferred stock	(2,676)	(2,676)	(2,676)
Net cash used in financing activities	106,580	(195,257)	254,002
Cash and cash equivalents at beginning of year	586,203	716,395	299,685
Cash and cash equivalents at end of year	644,099	586,203	716,395
Cash and cash equivalents include:
Money market instruments	97,708	7,590	10,415
Holding Company [Member]
Cash flows from operating activities:
Net income	167,377	201,608	66,956
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	314	2,202	3,769
Equity in undistributed earnings of subsidiaries	(138,925)	(172,580)	(66,587)
Gain on early extinguishment of debt	0	(2,316)	(1,391)
Accretion of discount on loans	0	(4)	(14)
Net decrease (increase) in other assets	11,710	(8,417)	(8)
Net increase (decrease) in other liabilities	526	2,890	(201)
Net cash provided by operating activities	41,002	23,383	2,524
Cash flows from investing activities:
Principal collected on loans	0	191	50
Net cash provided by investing activities	0	191	50
Cash flows from financing activities:
Repurchase of outstanding common stock	(1,959)	(2,827)	(2,497)
Repayments of junior subordinated debentures	0	(21,434)	(5,930)
Dividends paid on common stock	(30,356)	(6,517)	0
Dividends paid on preferred stock	(2,676)	(2,676)	(2,676)
Net cash used in financing activities	(34,991)	(33,454)	(11,103)
Net (decrease) increase in cash and cash equivalents	6,011	(9,880)	(8,529)
Cash and cash equivalents at beginning of year	17,095	26,975	35,504
Cash and cash equivalents at end of year	23,106	17,095	26,975
Cash and cash equivalents include:
Cash and due from banks	16,895	10,984	20,864
Money market instruments	$ 6,211	$ 6,111	$ 6,111

SUBSEQUENT EVENTS - Additional

SUBSEQUENT EVENTS - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Subsequent Event [Line Items]
Loans and Leases Receivable, Gross	$ 9,002,205	$ 8,858,123	$ 8,850,476
Consumer Portfolio Segment [Member]
Subsequent Event [Line Items]
Loans and Leases Receivable, Gross	2,281,653	1,944,713	1,749,897
Residential Portfolio Segment [Member]
Subsequent Event [Line Items]
Loans and Leases Receivable, Gross	2,933,773	3,163,208	$ 3,290,957
Commercial Portfolio Segment [Member]
Subsequent Event [Line Items]
Loans and Leases Receivable, Gross	$ 3,786,779	$ 3,750,202
Payment Deferral [Member] | Earthquake [Member] | Consumer Portfolio Segment [Member]
Subsequent Event [Line Items]
Financing Receivable Deferral Payment Number Of Agreements	726
Loans and Leases Receivable, Gross	$ 14,500
Payment Deferral [Member] | Earthquake [Member] | Residential Portfolio Segment [Member]
Subsequent Event [Line Items]
Financing Receivable Deferral Payment Number Of Agreements	59
Loans and Leases Receivable, Gross	$ 9,200
Payment Deferral [Member] | Earthquake [Member] | Commercial Portfolio Segment [Member]
Subsequent Event [Line Items]
Financing Receivable Deferral Payment Number Of Agreements	two
Loans and Leases Receivable, Gross	$ 55,700