Berkshire Hills Bancorp (BHLB) 10-Q 29 May 20 2020 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2020	May 25, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2020
Document Transition Report	false
Entity File Number	001-15781
Entity Registrant Name	BERKSHIRE HILLS BANCORP INC
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-3510455
Entity Address, Address Line One	60 State Street
Entity Address, City or Town	Boston
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02109
City Area Code	800
Local Phone Number	773-5601
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	BHLB
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		50,185,485
Entity Central Index Key	0001108134
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 90,280	$ 105,447
Short-term investments	515,140	474,382
Total cash and cash equivalents	605,420	579,829
Trading security, at fair value	9,829	10,769
Marketable equity securities, at fair value	32,283	41,556
Securities available for sale, at fair value	1,403,858	1,311,555
Securities held to maturity (fair values of $358,416 and $373,277)	336,802	357,979
Federal Home Loan Bank stock and other restricted securities	54,306	48,019
Total securities	1,837,078	1,769,878
Less: Allowance for credit losses on held to maturity securities	(141)	0
Net securities	1,836,937	1,769,878
Loans held for sale	4,252	36,664
Total loans	9,303,177	9,502,428
Less: Allowance for credit losses on loans	(113,510)	(63,575)
Net loans	9,189,667	9,438,853
Premises and equipment, net	120,667	120,398
Other real estate owned	224	0
Goodwill	553,762	553,762
Other intangible assets	44,035	45,615
Cash surrender value of bank-owned life insurance policies	228,447	227,894
Other assets	398,038	288,945
Assets from discontinued operations	140,064	154,132
Total assets	13,121,513	13,215,970
Liabilities
Demand deposits	1,922,490	1,884,100
NOW and other deposits	1,546,626	1,492,569
Money market deposits	2,391,835	2,528,656
Savings deposits	867,024	841,283
Time deposits	3,343,700	3,589,369
Total deposits	10,071,675	10,335,977
Short-term debt	225,000	125,000
Long-term Federal Home Loan Bank advances	719,053	605,501
Subordinated borrowings	97,107	97,049
Total borrowings	1,041,160	827,550
Other liabilities	255,846	267,398
Liabilities from discontinued operations	30,554	26,481
Total liabilities	11,399,235	11,457,406
Shareholders’ equity
Preferred Stock (Series B non-voting convertible preferred stock - $0.01 par value; 2,000,000 shares authorized, 260,907 shares issued and outstanding in 2020; 2,000,000 shares authorized, 521,607 shares issued and outstanding in 2019)	20,325	40,633
Common stock ($.01 par value; 100,000,000 shares authorized and 51,903,190 shares issued and 50,199,479 shares outstanding in 2020; 51,903,190 shares issued and 49,585,143 shares outstanding in 2019	523	517
Additional paid-in capital - common stock	1,427,800	1,422,441
Unearned compensation	(9,764)	(8,465)
Retained earnings	304,442	361,082
Accumulated other comprehensive income	31,017	11,993
Treasury stock, at cost (1,703,711 shares in 2020 and 2,318,047 shares in 2019)	(52,065)	(69,637)
Total shareholders’ equity	1,722,278	1,758,564
Total liabilities and shareholders’ equity	$ 13,121,513	$ 13,215,970

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value	$ 358,416	$ 373,277
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	51,903,190	51,903,190
Common stock, shares outstanding (in shares)	50,199,479	49,585,143
Treasury stock (in shares)	1,703,711	2,318,047
Series B Convertible Preferred Stock
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	2,000,000	2,000,000
Preferred stock, shares issued (in shares)	260,907	521,607
Preferred stock, shares outstanding (in shares)	260,907	521,607

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest and dividend income from continuing operations
Loans	$ 101,695	$ 105,651
Securities and other	14,500	15,458
Total interest and dividend income	116,195	121,109
Interest expense from continuing operations
Deposits	23,838	26,622
Borrowings	5,929	9,028
Total interest expense	29,767	35,650
Net interest income from continuing operations	86,428	85,459
Non-interest income from continuing operations
Other, net	(436)	970
(Loss)/gain on securities, net	(9,730)	2,551
Total non-interest income	5,636	21,722
Total net revenue from continuing operations	92,064	107,181
Provision for credit losses	34,807	4,001
Non-interest expense from continuing operations
Compensation and benefits	36,909	33,500
Occupancy and equipment	11,132	9,446
Technology and communications	8,081	6,257
Marketing and promotion	1,165	1,267
Professional services	2,720	2,275
FDIC premiums and assessments	1,482	1,639
Other real estate owned and foreclosures	27	2
Amortization of intangible assets	1,580	1,200
Acquisition, restructuring, and other expenses	0	7,015
Other	8,229	9,390
Total non-interest expense	71,325	71,991
(Loss)/income from continuing operations before income taxes	(14,068)	31,189
Income tax (benefit)/expense	(1,996)	6,917
Net (loss)/income from continuing operations	(12,072)	24,272
(Loss) from discontinued operations before income taxes	(10,629)	(854)
Income tax (benefit)	(2,831)	(217)
Net (loss) from discontinued operations	(7,798)	(637)
Net (loss)/income	(19,870)	23,635
Preferred stock dividend	125	240
(Loss)/income available to common shareholders	$ (19,995)	$ 23,395
Basic (loss)/earnings per common share:
Continuing operations (in dollars per share)	$ (0.24)	$ 0.52
Discontinued operations (in dollars per share)	(0.16)	(0.01)
Total (in dollars per share)	(0.40)	0.51
Diluted (loss)/earnings per common share:
Continuing operations (in dollars per share)	(0.24)	0.52
Discontinued operations (in dollars per share)	(0.16)	(0.01)
Total (in dollars per share)	$ (0.40)	$ 0.51
Weighted average shares outstanding:
Basic (in shares)	50,204	46,113
Diluted (in shares)	50,204	46,261
Mortgage banking originations
Non-interest income from continuing operations
Total non-interest income	$ 959	$ 46
Loan related income
Non-interest income from continuing operations
Total non-interest income	1,302	6,003
Deposit related fees
Non-interest income from continuing operations
Total non-interest income	7,947	6,858
Insurance commissions and fees
Non-interest income from continuing operations
Total non-interest income	3,024	2,853
Wealth management fees
Non-interest income from continuing operations
Total non-interest income	2,570	2,441
Total fee income
Non-interest income from continuing operations
Total non-interest income	$ 15,802	$ 18,201

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS)/ INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net (loss)/income	$ (19,870)	$ 23,635
Other comprehensive income, before tax:
Changes in unrealized gain on debt securities available-for-sale	25,614	14,215
Income taxes related to other comprehensive income:
Changes in unrealized gain on debt securities available-for-sale	(6,590)	(3,651)
Total other comprehensive income	19,024	10,564
Total comprehensive (loss)/income	$ (846)	$ 34,199

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Preferred stock	Common stock	Additional paid-in capital	Unearned compensation	Retained earnings	Accumulated other comprehensive income/(loss)	Treasury stock	Preferred stockPreferred stock	Common stockCommon stock
Balance at beginning of period (in shares) at Dec. 31, 2018		522	45,417
Balance at beginning of period at Dec. 31, 2018	$ 1,552,918	$ 40,633	$ 460	$ 1,245,013	$ (6,594)	$ 308,839	$ (13,470)	$ (21,963)
Comprehensive income:
Net income	23,635					23,635
Other comprehensive income (loss)	10,564						10,564
Total comprehensive (loss)/income	34,199					23,635	10,564
Cash dividends declared on common shares	(10,475)					(10,475)
Cash dividends declared on preferred shares	(240)					(240)
Forfeited shares (in shares)			(13)
Forfeited shares				(41)	444			(403)
Restricted stock grants (in shares)			131
Restricted stock grants				3	(3,664)			3,661
Stock-based compensation	989				989
Other, net (in shares)			(13)
Other, net	(386)							(386)
Balance at end of period (in shares) at Mar. 31, 2019		522	45,522
Balance at end of period at Mar. 31, 2019	1,577,005	$ 40,633	$ 460	1,244,975	(8,825)	321,759	(2,906)	(19,091)
Balance at beginning of period (in shares) at Dec. 31, 2019		522	49,585
Balance at beginning of period at Dec. 31, 2019	1,758,564	$ 40,633	$ 517	1,422,441	(8,465)	361,082	11,993	(69,637)
Comprehensive income:
Net income	(19,870)					(19,870)
Other comprehensive income (loss)	19,024						19,024
Total comprehensive (loss)/income	(846)					(19,870)	19,024
Conversion of preferred stock to common stock (in shares)									(261)	522
Conversion of preferred stock to common stock				5,391				14,911	$ (20,308)	$ 6
Cash dividends declared on common shares	(12,050)					(12,050)
Cash dividends declared on preferred shares	(125)					(125)
Treasury shares repurchased (in shares)			(14)
Treasury shares repurchased	(473)							(473)
Forfeited shares (in shares)			(11)
Forfeited shares				(84)	375			(291)
Exercise of stock options (in shares)			24
Exercise of stock options	519					(215)		734
Restricted stock grants (in shares)			108
Restricted stock grants				52	(3,133)			3,081
Stock-based compensation	1,459				1,459
Other, net (in shares)			(15)
Other, net	(390)			0		0		(390)
Balance at end of period (in shares) at Mar. 31, 2020		261	50,199
Balance at end of period at Mar. 31, 2020	1,722,278	$ 20,325	$ 523	$ 1,427,800	$ (9,764)	$ 304,442	$ 31,017	$ (52,065)
Comprehensive income:
Impact to retained earnings from adoption of ASC 326, net of tax | Accounting Standards Update 2016-13	$ 24,380

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Common stock, cash dividends declared (in dollars per share)	$ 0.24	$ 0.23
Preferred stock, cash dividends declared (in dollars per share)	$ 0.48	$ 0.46

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities:
Net (loss)/income from continuing operations	$ (12,072)	$ 24,272
Net (loss) from discontinued operations	(7,798)	(637)
Net (loss)/income	(19,870)	23,635
Adjustments to reconcile net (loss)/income to net cash provided by operating activities:
Provision for credit losses	34,807	4,001
Net amortization of securities	762	624
Change in unamortized net loan costs and premiums	386	2,161
Premises and equipment depreciation and amortization expense	2,680	2,184
Stock-based compensation expense	1,459	989
Accretion of purchase accounting entries, net	(3,121)	(1,338)
Amortization of other intangibles	1,580	1,200
Income from cash surrender value of bank-owned life insurance policies	(1,106)	(1,160)
Securities losses (gains), net	9,730	(2,551)
Net increase (decrease) in loans held-for-sale	4,472	(2,590)
Decrease in right-of-use lease assets	2,258	3,815
Decrease in lease liabilities	(2,287)	(3,981)
Loss on disposition of assets	0	1,615
Amortization of interest in tax-advantaged projects	486	579
Net change in other	(11,542)	(5,158)
Net cash provided by operating activities of continuing operations	28,492	24,662
Net cash provided (used) by operating activities of discontinued operations	6,560	(44,911)
Net cash provided (used) by operating activities	35,052	(20,249)
Cash flows from investing activities:
Net decrease in trading security	181	174
Purchases of marketable equity securities	(11,437)	(11,900)
Proceeds from sales of marketable equity securities	12,329	11,896
Purchases of securities available for sale	(160,925)	(15,180)
Proceeds from sales of securities available for sale	3,520	2,587
Proceeds from maturities, calls, and prepayments of securities available for sale	90,758	39,542
Purchases of securities held to maturity	0	(159)
Proceeds from maturities, calls, and prepayments of securities held to maturity	20,372	4,111
Net change in loans	217,429	87,553
Proceeds from surrender of bank-owned life insurance	553	0
Purchase of Federal Home Loan Bank stock	(6,741)	(15,930)
Proceeds from sale of Federal Home Loan Bank stock	454	38,650
Net investment in limited partnership tax credits	(2,783)	505
Purchase of premises and equipment, net	(3,386)	(2,382)
Net cash provided by investing activities	160,324	139,467
Cash flows from financing activities:
Net (decrease)/increase in deposits	(262,203)	184,034
Proceeds from Federal Home Loan Bank advances and other borrowings	315,854	1,292,517
Repayments of Federal Home Loan Bank advances and other borrowings	(102,382)	(1,600,624)
Purchase of treasury stock	(473)	0
Exercise of stock options	519	0
Common and preferred stock cash dividends paid	(12,175)	(10,715)
Settlement of derivative contracts with financial institution counterparties	(108,925)	0
Net cash used by financing activities	(169,785)	(134,788)
Net change in cash and cash equivalents	25,591	(15,570)
Cash and cash equivalents at beginning of period	579,829	183,189
Cash and cash equivalents at end of period	605,420	167,619
Supplemental cash flow information:
Interest paid on deposits	26,830	26,118
Interest paid on borrowed funds	6,033	10,656
Income taxes paid, net	178	794
Other non-cash changes:
Other net comprehensive income	19,024	10,564
Reclass of SBA loan portfolio to held-for-investment, net	27,940	0
Real estate owned acquired in settlement of loans	224	$ 0
Accounting Standards Update 2016-13
Other non-cash changes:
Impact to retained earnings from adoption of ASC 326, net of tax	$ 24,380

BASIS OF PRESENTATION

BASIS OF PRESENTATION	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION The Consolidated Financial Statements (the “financial statements”) of Berkshire Hills Bancorp, Inc. and its subsidiaries (the “Company” or “Berkshire”) have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The Company is a Delaware corporation, headquartered in Boston, Massachusetts, and the holding company for Berkshire Bank (the “Bank”), a Massachusetts-chartered trust company headquartered in Pittsfield, Massachusetts, and Berkshire Insurance Group, Inc. These financial statements include the accounts of the Company, its wholly-owned subsidiaries and the Bank’s consolidated subsidiaries. In consolidation, all significant intercompany accounts and transactions are eliminated. The results of operations of companies or assets acquired are included only from the dates of acquisition. All material wholly-owned and majority-owned subsidiaries are consolidated unless GAAP requires otherwise. The Company has evaluated subsequent events for potential recognition and/or disclosure through the date these financial statements were issued. These interim financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X, and accordingly, certain information and footnote disclosures normally included in financial statements prepared according to GAAP have been omitted. The results for any interim period are not necessarily indicative of results for the full year. These consolidated financial statements should be read in conjunction with the audited financial statements and disclosures Berkshire Hills Bancorp, Inc. previously filed with the Securities and Exchange Commission in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. In management’s opinion, all adjustments necessary for a fair statement are reflected in the interim periods presented. Reclassifications Certain items in prior financial statements have been reclassified to conform to the current presentation. Recently Adopted Accounting Principles In January 2017, the FASB issued ASU No. 2017-04, “Intangibles: Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment.” The ASU simplifies the test for goodwill impairment by eliminating the second step of the current two-step method. Under the new accounting guidance, entities will compare the fair value of a reporting unit with its carrying amount. If the carrying amount exceeds the reporting unit’s fair value, the entity is required to recognize an impairment charge for this amount. Current guidance requires an entity to proceed to a second step, whereby the entity would determine the fair value of its assets and liabilities. The new method applies to all reporting units. The performance of a qualitative assessment is still allowable. This accounting guidance is effective prospectively for interim and annual reporting periods beginning after December 15, 2019. The Company will adopt the guidance when it performs the annual impairment test and does not expect adoption to have a material effect on its Consolidated Financial Statements. In August 2018, the FASB issued ASU No. 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement.” This ASU eliminates, adds, and modifies certain disclosure requirements for fair value measurements. Among the changes, entities will no longer be required to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. ASU No. 2018-13 is effective for interim and annual reporting periods beginning after December 15, 2019. Entities are also allowed to elect early adoption for the eliminated or modified disclosure requirements and delay adoption of the new disclosure requirements until their effective date. As ASU No. 2018-13 only revises disclosure requirements, it did not have a material impact on the Company’s Consolidated Financial Statements. In August 2018, the FASB issued ASU No. 2018-15, “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract.” ASU No. 2018-15 clarifies certain aspects of ASU No. 2015-05, “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Fees Paid in a Cloud Computing Arrangement,” which was issued in April 2015. Specifically, ASU No. 2018-15 aligns the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contract with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). ASU No. 2018-15 does not affect the accounting for the service element of a hosting arrangement that is a service contract. ASU No. 2018-15 is effective for interim and annual reporting periods beginning after December 15, 2019. The adoption did not have a material impact on the Company's Consolidated Financial Statements. In June 2016, the FASB issued ASU No. 2016-13 “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” and related subsequent amendments, which replaces the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss (“CECL”) methodology. The measurement of expected losses under the CECL methodology is applicable to financial assets measured at amortized cost, as well as unfunded commitments that are considered off-balance sheet credit exposures at the reporting date. The measurement is based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to enhance their credit loss estimates. The update requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. For available for sale debt securities with unrealized losses, Topic 326 requires credit losses to be recognized as an allowance rather than a reduction in the amortized cost of the securities. As a result, improvements to estimated credit losses are recognized immediately in earnings rather than as interest income over time. The current expected credit loss measurement will be used to estimate the allowance for credit losses (“ACL”) over the life of the financial assets. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2019. As previously disclosed, the Company assembled a cross-functional working group that met regularly to oversee the implementation plan which included assessment and documentation of processes and internal controls, model development and documentation, assessing existing loan and loss data, assessing models for default and loss estimates, and conducting parallel runs and reviews through December 31, 2019. Under CECL the Company determines its allowance for credit losses on loans using pools of assets with similar risk characteristics. The Company evaluates its risk characteristics of loans based on regulatory call report code with sub-segmentation based on underlying collateral for certain loan types. Loans that no longer match the risk profile of the pool are individually assessed for credit losses. The Company’s lifetime credit loss models are based on historical data and incorporate forecasts of macroeconomic variables, expected prepayments and recoveries. Outside of the model, non-economic qualitative factors are applied to further refine the expected loss calculation for each portfolio. A seven quarter reasonable and supportable forecast period is currently used for all loan portfolios. When the risk characteristics of a loan no longer match the characteristics of the collective pool, the loan is removed from the pool and individually assessed for credit losses. Generally, non-accrual loans above a threshold deemed appropriate by management, TDRs, potential TDRs, and collateral dependent loans are individually assessed. The individual assessment for credit impairment is generally based on a discounted cash flow approach unless the asset is collateral dependent. A loan is considered collateral dependent when repayment is expected to be provided substantially through the operation or sale of the collateral and the borrower is experiencing financial difficulty. Collateral dependent loans are individually assessed and the expected credit loss is based on the fair value of the collateral. The fair value is reduced for estimated costs to sell if the value of the collateral is expected to be realized through sale. The Company has elected to present accrued interest receivable separately from the amortized cost basis on the balance sheet and is not estimating an allowance for credit loss on accrued interest. This election applies to loans as well as debt securities. The Company's non-accrual policies have not changed as a result of adopting CECL. The Company adopted CECL on January 1, 2020 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Results for the reporting periods after January 1, 2020 are presented under Topic 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. On the adoption date, the Company increased the allowance for credit losses for loans by $25.4 million and increased the allowance for credit losses for unfunded loan commitments by $8.0 million (in other liabilities). The increase related to the Company's acquired loan portfolio totaled $15.3 million . Under the previously applicable accounting guidance, any remaining unamortized loan discount on an individual loan could be used to offset a charge-off for that loan, so the allowance for loan losses needed for the acquired loans was reduced by the remaining loan discounts. The new ASU removes the ability to offset a charge-off against the remaining loan discount and requires an allowance for credit losses to be recognized in addition to the loan discount. The impact of adopting the ASU, and at each subsequent reporting period, is highly dependent on credit quality, macroeconomic forecasts and conditions, composition of our loans and available-for-sale securities portfolio, along with other management judgments. The FASB provided transition relief, allowing entities to irrevocably elect, upon adoption of CECL, the fair value option (FVO) on financial instruments that were previously recorded at amortized cost and are within the scope of ASC 326-20 if the instruments are eligible for the FVO under ASC 825-10. It is applied through a cumulative-effect adjustment to retained earnings. The Company elected the FVO for the taxi medallion portfolio resulting in a $15.3 million reduction in loan valuation. As of January 1, 2020, the Company recorded a cumulative-effect adjustment of $24.4 million to decrease retained earnings, net of deferred tax balances of $9.0 million . The Company recorded an allowance for credit losses as of January 1, 2020 on its securities held to maturity of $0.3 million . The Company adopted CECL using the prospective transition approach for financial assets purchased with credit deterioration (“PCD”) that were previously classified as purchased credit impaired and accounted for under ASC 310-30. In accordance with the standard, Berkshire did not reassess whether PCI assets met the definition of PCD assets as of the date of adoption. On January 1, 2020, the amortized cost basis of the PCD assets were adjusted to reflect the addition of $15.3 million to the allowance for credit losses for loans which is net of $11.9 million adjustment for confirmed losses. The remaining noncredit discount in the amount of $3.2 million will be accreted into interest income at the effective interest rate as of January 1, 2020. The impact of the January 1, 2020, adoption entry is summarized in the table below: (in thousands) December 31, 2019 Pre-ASC 326 Adoption Impact of Adoption January 1, 2020 Post-ASC 326 Adoption Assets: Loans 9,502,428 — 9,502,428 PCD gross up — 15,326 15,326 Fair value option — (15,291 ) (15,291 ) Total loans 9,502,428 35 9,502,463 Allowance for credit losses on loans 63,575 25,434 89,009 Allowance for credit losses on securities — 309 309 Deferred tax assets, net 51,165 8,993 60,158 Liabilities and shareholders' equity: Other liabilities (ACL unfunded loan commitments) 100 7,993 8,093 Retained earnings 361,082 (24,380 ) 336,702 In December 2018, the OCC, the Board of Governors of the Federal Reserve System, and the FDIC approved a final rule to address changes to credit loss accounting under GAAP, including banking organizations’ implementation of CECL. The final rule provides banking organizations the option to phase in over a three-year period the day-one adverse effects on regulatory capital that may result from the adoption of the new accounting standard. In March 2020, the OCC, the Board of Governors of the Federal Reserve System, and the FDIC announced an interim final rule to delay the estimated impact on regulatory capital stemming from the implementation of CECL. The interim final rule maintains the three-year transition option in the previous rule and provides banks the option to delay for two years an estimate of CECL’s effect on regulatory capital, relative to the incurred loss methodology’s effect on regulatory capital, followed by a three-year transition period (five-year transition option). The Company is adopting the capital transition relief over the permissible five-year period. On March 27, 2020, the Coronavirus, Aid, Relief, and Economic Security (CARES) Act, which provides relief from certain requirements under GAAP, was signed into law. Section 4013 of the CARES Act gives entities temporary relief from the accounting and disclosure requirements for troubled debt restructurings (TDRs) under ASC 310-40 in certain situations. In addition, on April 7, 2020, certain regulatory banking agencies issued an interagency statement that offers practical expedients for evaluating whether loan modifications in response to the COVID-19 pandemic are TDRs. The interagency statement was originally issued on March 22, 2020, but was revised to address the relationship between their original TDR guidance and the guidance in Section 4013 of the CARES Act. To qualify for TDR accounting and disclosure relief under the CARES Act, the applicable loan must not have been more than 30 days past due as of December 31, 2019, and the modification must be executed during the period beginning on March 1, 2020, and ending on the earlier of December 31, 2020, or the date that is 60 days after the termination date of the national emergency declared by the president on March 13, 2020, under the National Emergencies Act related to the outbreak of COVID-19. The CARES Act applies to modifications made as a result of COVID-19, including forbearance agreements, interest rate modifications, repayment plans, and other arrangements to defer or delay payment of principal or interest. The interagency statement does not require the modification to be completed within a certain time period if it is related to COVID-19 and the loan was not more than 30 days past due as of the date of the Company’s implementation of its modification programs. Moreover, the interagency statement applies to short-term modifications including payment deferrals, fee waivers, extensions of repayment terms, or other insignificant payment delays as a result of COVID-19. The Company will apply Section 4013 of the CARES Act and the interagency statement in connection with applicable modifications. For modifications that qualify under either the CARES Act or the interagency statement, TDR accounting and reporting is suspended through the period of the modification; however, the Company will continue to apply its existing non-accrual policies including consideration of the loan's past due status which is determined on the basis of the contractual terms of the loan. Once a loan has been contractually modified, the past due status is generally based on the updated terms including payment deferrals. Future Application of Accounting Pronouncements In August 2018, the FASB issued ASU No. 2018-14, “Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans.” This ASU amends and modifies the disclosure requirements for employers that sponsor defined benefit pension or other post-retirement plans. The amendments in this update remove disclosures that no longer are considered cost beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. ASU No. 2018-14 is effective for fiscal years ending after December 15, 2020, with early adoption permitted. As ASU No. 2018-14 only revises disclosure requirements, it will not have a material impact on the Consolidated Financial Statements. In December 2019, the FASB issued ASU No. 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” ASU No. 2019-12 removes specific exceptions to the general principles in FASB ASC Topic 740. It eliminates the need for an organization to analyze whether the following apply in a given period: (1) exception to the incremental approach for intraperiod tax allocation; (2) exceptions to accounting for basis differences when there are ownership changes in foreign investments; and (3) exception in interim period income tax accounting for year-to-date losses that exceed anticipated losses. ASU 2019-12 also improves financial statement preparers’ application of income tax-related guidance and simplifies: (1) franchise taxes that are partially based on income; (2) transactions with a government that result in a step up in the tax basis of goodwill; (3) separate financial statements of legal entities that are not subject to tax; and (4) enacted changes in tax laws in interim periods. The amendments in this ASU become effective for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact of adopting the new guidance on the Consolidated Financial Statements. In January 2020, the FASB issued ASU No. 2020-01, “Investments - Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815): Clarifying the Interactions Between Topic 321, Topic 323, and Topic 815 (a consensus of the FASB Emerging Issues Task Force)”. ASU No. 2020-01 clarifies the interaction of the accounting for equity securities under Topic 321 and investments accounted for under the equity method of accounting in Topic 323 and the accounting for certain forward contracts and purchased options accounted for under Topic 815. The amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. In addition, this ASU provides direction that a company should not consider whether the underlying securities would be accounted for under the equity method or the fair value option when it is determining the accounting for certain forward contracts and purchased options, upon either settlement or exercise. The amendments in this ASU become effective for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. Early adoption is permitted, and the amendments are to be applied prospectively. The Company is currently evaluating the impact of adopting the new guidance on the Consolidated Financial Statements. In March 2020, the FASB issued ASU No. 2020-04, “Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” ASU No. 2020-04 provides temporary optional expedients and exceptions to GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens of the expected market transition from LIBOR and other interbank offered rates to alternative reference rates, such as SOFR. For instance, entities can elect not to apply certain modification accounting requirements to contracts affected by reference rate reform, if certain criteria are met. An entity that makes this election would not have to remeasure the contracts at the modification date or reassess a previous accounting determination. Entities can also elect various optional expedients that would allow them to continue applying hedge accounting for hedging relationships affected by reference rate reform, if certain criteria are met. Finally, entities can make a one-time election to sell and/or reclassify held-to-maturity debt securities that reference an interest rate affected by reference rate reform. It is anticipated that this ASU will simplify any modifications that are executed between the selected start date (yet to be determined) and December 31, 2022 that are directly related to LIBOR transition by allowing prospective recognition of the continuation of the contract, rather than extinguishment of the old contract resulting in writing off unamortized fees/costs. The Company is currently evaluating the impact of adopting the new guidance on the Consolidated Financial Statements.

DISCONTINUED OPERATIONS

DISCONTINUED OPERATIONS	3 Months Ended
	Mar. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
DISCONTINUED OPERATIONS	DISCONTINUED OPERATIONS During the first quarter of 2019, the Company reached the decision to pursue the sale of the national mortgage banking operations of First Choice Loan Services, Inc. (“FCLS”) – a subsidiary of the Bank. The decision was based on a number of strategic priorities and other factors, including the competitiveness of the mortgage industry. FCLS continues to operate and serve its customers as the Company initiates the process of identifying a buyer. The potential transaction is expected to close within 12 months . As a result of these actions, the Company classified the operations of FCLS as discontinued under ASC 205-20. The Consolidated Balance Sheets, Consolidated Statements of Income, and Consolidated Statements of Cash Flows present discontinued operations retrospectively for current and prior periods. On May 7, 2020, the Company completed a transaction to sell certain assets and liabilities related to the operations of FCLS. The impact of the transaction is considered to be immaterial and is not reflected in the Company's operating results for the three months ended March 31, 2020. The Company will continue to wind-down the operations of FCLS through the second and third quarters of 2020 and intends to complete a second transaction to transfer licenses and other intellectual property by the end of the year. Operating results for the three months ended March 31, 2020, include expenses related to the wind-down of operations. The following is a summary of the assets and liabilities of the discontinued operations of FCLS at March 31, 2020 and December 31, 2019: (in thousands) March 31, 2020 December 31, 2019 Assets Loans held for sale, at fair value $ 125,723 $ 132,655 Premises and equipment, net 682 1,073 Mortgage servicing rights, at fair value 8,518 12,299 Mortgage banking derivatives (332 ) 2,329 Right-of-use asset 2,743 3,462 Other assets 2,730 2,314 Total assets $ 140,064 $ 154,132 Liabilities Customer payments in process $ 21,241 $ 15,372 Lease liability 2,767 3,494 Other liabilities 6,546 7,615 Total liabilities $ 30,554 $ 26,481 FCLS funds its lending operations and maintains working capital through an intercompany line-of-credit with the Bank. Although the sale of FCLS will contemplate settlement of these borrowings, debt was not allocated to discontinued operations due to the intercompany nature of the borrowings. When the transaction closes, the Company will reallocate these funds to various purposes, including but not limited to, pay-down of short-term debt with the Federal Home Loan Bank. The following presents operating results of the discontinued operations of FCLS for the three months ended March 31, 2020 and March 31, 2019: Three Months Ended March 31, (in thousands) 2020 2019 Interest income $ 729 $ 1,044 Interest expense 282 584 Net interest income 447 460 Non-interest income 1,358 8,813 Total net revenue 1,805 9,273 Non-interest expense 12,434 10,127 (Loss) from discontinued operations before income taxes (10,629 ) (854 ) Income tax expense (2,831 ) (217 ) Net (loss) from discontinued operations $ (7,798 ) $ (637 )

TRADING SECURITY

TRADING SECURITY	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
TRADING SECURITY	TRADING SECURITY The Company holds a tax-advantaged economic development bond accounted for at fair value. The security had an amortized cost of $9.2 million and $9.4 million , and a fair value of $9.8 million and $10.8 million , at March 31, 2020 and December 31, 2019 , respectively. As discussed further in Note 8 - Derivative Financial Instruments and Hedging Activities, the Company entered into a swap contract to swap-out the fixed rate of the security in exchange for a variable rate. The Company does not purchase securities with the intent of selling them in the near term, and there were no other securities in the trading portfolio at March 31, 2020 or December 31, 2019.

SECURITIES AVAILABLE FOR SALE,

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES	SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES The following is a summary of securities available for sale, held to maturity, and marketable equity securities: (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Allowance March 31, 2020 Securities available for sale Municipal bonds and obligations $ 108,279 $ 5,936 $ (144 ) $ 114,071 $ — Agency collateralized mortgage obligations 774,281 26,903 — 801,184 — Agency mortgage-backed securities 139,149 4,273 (94 ) 143,328 — Agency commercial mortgage-backed securities 189,253 6,178 (710 ) 194,721 — Corporate bonds 97,125 207 (3,043 ) 94,289 — Trust preferred securities 5,987 29 (524 ) 5,492 Other bonds and obligations 49,628 1,151 (6 ) 50,773 — Total securities available for sale 1,363,702 44,677 (4,521 ) 1,403,858 — Securities held to maturity Municipal bonds and obligations 247,211 14,288 — 261,499 (83 ) Agency collateralized mortgage obligations 69,050 6,582 — 75,632 — Agency mortgage-backed securities 6,070 185 — 6,255 — Agency commercial mortgage-backed securities 10,337 638 — 10,975 — Tax advantaged economic development bonds 3,838 — (79 ) 3,759 (58 ) Other bonds and obligations 296 — — 296 — Total securities held to maturity 336,802 21,693 (79 ) 358,416 (141 ) Marketable equity securities 34,288 1,912 (3,917 ) 32,283 — Total $ 1,734,792 $ 68,282 $ (8,517 ) $ 1,794,557 $ (141 ) (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Allowance December 31, 2019 Securities available for sale Municipal bonds and obligations $ 104,325 $ 5,813 $ — $ 110,138 $ — Agency collateralized mortgage obligations 742,550 6,431 (169 ) 748,812 — Agency mortgage-backed securities 146,589 1,515 (360 ) 147,744 — Agency commercial mortgage-backed securities 148,066 176 (1,146 ) 147,096 — Corporate bonds 115,395 1,788 (607 ) 116,576 — Other bonds and obligations 40,414 780 (5 ) 41,189 — Total securities available for sale 1,297,339 16,503 (2,287 ) 1,311,555 — Securities held to maturity Municipal bonds and obligations 252,936 13,095 (5 ) 266,026 — Agency collateralized mortgage obligations 69,667 2,870 (50 ) 72,487 — Agency mortgage-backed securities 6,271 29 — 6,300 — Agency commercial mortgage-backed securities 10,353 51 — 10,404 — Tax advantaged economic development bonds 18,456 218 (910 ) 17,764 — Other bonds and obligations 296 — — 296 — Total securities held to maturity 357,979 16,263 (965 ) 373,277 — Marketable equity securities 37,138 5,147 (729 ) 41,556 — Total $ 1,692,456 $ 37,913 $ (3,981 ) $ 1,726,388 $ — The following table summarizes the activity in the allowance for credit losses for debt securities held to maturity by security type for the three months ended March 31, 2020: (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at beginning of period — — — Impact of ASC 326 adoption (83 ) (226 ) (309 ) Provision for credit losses- reversal — 168 168 Balance at end of period (83 ) (58 ) (141 ) Credit Quality Information The Company monitors the credit quality of held to maturity securities through credit ratings from various rating agencies. Credit ratings express opinions about the credit quality of a security and are utilized by the Company to make informed decision. Investment grade securities are rated BBB-/Baa3 or higher and generally considered by the rating agencies and market participants to be of low credit risk. Conversely, securities rated below investment grade are considered to have distinctively higher credit risk than investment grade securities. For securities without credit ratings, the Company utilizes other financial information indicating the financial health of the underlying municipality, agency, or organization. As of March 31, 2020, none of the Company's investment securities were delinquent or in non-accrual status. The amortized cost and estimated fair value of available for sale (“AFS”) and held to maturity (“HTM”) securities segregated by contractual maturity at March 31, 2020 are presented below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Mortgage-backed securities are shown in total, as their maturities are highly variable. Available for sale Held to maturity Amortized Fair Amortized Fair (In thousands) Cost Value Cost Value Within 1 year $ 43,509 $ 43,660 $ 1,614 $ 1,614 Over 1 year to 5 years 16,655 16,466 6,033 6,043 Over 5 years to 10 years 78,121 78,061 19,522 19,940 Over 10 years 122,734 126,438 224,176 237,957 Total bonds and obligations 261,019 264,625 251,345 265,554 Mortgage-backed securities 1,102,683 1,139,233 85,457 92,862 Total $ 1,363,702 $ 1,403,858 $ 336,802 $ 358,416 During the three months ended March 31, 2020, purchases of AFS securities totaled $160.9 million and the proceeds from the sale of AFS securities totaled $3.5 million . During the three months ended March 31, 2020 there were no gross gains and gross losses totaled $1 thousand . These gains and losses are included in gain/(loss) on securities, net on the consolidated statements of income. During the three months ended March 31, 2019, purchases of AFS securities totaled $15.2 million and the proceeds from the sale of AFS securities totaled $2.6 million . During the three months ended March 31, 2019 gross gains totaled $6 thousand and there were no gross losses. Securities available for sale and held to maturity with unrealized losses, segregated by the duration of their continuous unrealized loss positions, are summarized as follows: Less Than Twelve Months Over Twelve Months Total Gross Gross Gross Unrealized Fair Unrealized Fair Unrealized Fair (In thousands) Losses Value Losses Value Losses Value March 31, 2020 Securities available for sale Municipal bonds and obligations $ 144 $ 4,608 $ — $ — $ 144 $ 4,608 Agency mortgage-backed securities 84 5,750 10 315 94 6,065 Agency commercial mortgage-backed securities 710 9,324 — — 710 9,324 Corporate bonds 1,348 60,156 1,695 25,029 3,043 85,185 Trust preferred securities 524 4,361 — — 524 4,361 Other bonds and obligations 5 1,124 1 27 6 1,151 Total securities available for sale 2,815 85,323 1,706 25,371 4,521 110,694 Securities held to maturity Tax advantaged economic development bonds 79 3,759 — — 79 3,759 Total securities held to maturity 79 3,759 — — 79 3,759 Total $ 2,894 $ 89,082 $ 1,706 $ 25,371 $ 4,600 $ 114,453 December 31, 2019 Securities available for sale Agency collateralized mortgage obligations 127 52,623 42 6,267 169 58,890 Agency mortgage-backed securities 59 10,640 301 23,404 360 34,044 Agency commercial mortgage-backed securities 1,097 116,324 49 11,250 1,146 127,574 Corporate bonds — — 607 42,823 607 42,823 Other bonds and obligations 4 1,239 1 29 5 1,268 Total securities available for sale 1,287 180,826 1,000 83,773 2,287 264,599 Securities held to maturity Municipal bonds and obligations 5 800 — — 5 800 Agency collateralized mortgage obligations 50 9,778 — — 50 9,778 Tax advantaged economic development bonds — — 910 6,925 910 6,925 Total securities held to maturity 55 10,578 910 6,925 965 17,503 Total $ 1,342 $ 191,404 $ 1,910 $ 90,698 $ 3,252 $ 282,102 Debt Securities The Company expects to recover its amortized cost basis on all debt securities in its AFS and HTM portfolios. Furthermore, the Company does not intend to sell nor does it anticipate that it will be required to sell any of its securities in an unrealized loss position as of March 31, 2020 , prior to this recovery. The Company’s ability and intent to hold these securities until recovery is supported by the Company’s strong capital and liquidity positions as well as its historically low portfolio turnover. The following summarizes, by investment security type, the basis for the conclusion that the debt securities in an unrealized loss position within the Company’s AFS and HTM portfolios were not other-than-temporarily impaired at March 31, 2020 : AFS collateralized mortgage obligations At March 31, 2020 , 2 out of the total 253 securities in the Company’s portfolio of AFS collateralized mortgage obligations were in unrealized loss positions. Aggregate unrealized losses represented 0.5% of the amortized cost of securities in unrealized loss positions. The Federal National Mortgage Association (“FNMA”), Federal Home Loan Mortgage Corporation (“FHLMC”), and Government National Mortgage Association (“GNMA”) guarantee the contractual cash flows of all of the Company’s collateralized mortgage obligations. The securities are investment grade rated and there were no material underlying credit downgrades during the quarter. All securities are performing. AFS municipal bonds and obligations At March 31, 2020 , 3 out of the total 202 securities in the Company’s portfolio of AFS municipal bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 3.0% of the amortized cost of securities in unrealized loss positions. The Company continually monitors the municipal bond sector of the market carefully and periodically evaluates the appropriate level of exposure to the market. At this time, the Company feels the bonds in this portfolio carry minimal risk of default and the Company is appropriately compensated for that risk. There were no material underlying credit downgrades during the quarter. All securities are performing. AFS commercial and residential mortgage-backed securities At March 31, 2020 , 17 out of the total 112 securities in the Company’s portfolio of AFS mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 5.0% of the amortized cost of securities in unrealized loss positions. The FNMA, FHLMC, and GNMA guarantee the contractual cash flows of all of the Company’s mortgage-backed securities. The securities are investment grade rated and there were no material underlying credit downgrades during the quarter. All securities are performing. AFS corporate bonds At March 31, 2020 , 14 out of the total 20 securities in the Company’s portfolio of AFS corporate bonds were in unrealized loss positions. Aggregate unrealized losses represents 2.1% of the amortized cost of bonds in unrealized loss positions. The Company reviews the financial strength of all of these bonds and has concluded that the amortized cost remains supported by the expected future cash flows of these securities. AFS other bonds and obligations At March 31, 2020 , 3 out of the total 8 securities in the Company’s portfolio of other bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 0.5% of the amortized cost of securities in unrealized loss positions. The securities are all investment grade rated, and there were no material underlying credit downgrades during the quarter. All securities are performing. AFS trust preferred securities At March 31, 2020 , 1 out of the total 2 securities in the Company’s portfolio of AFS trust preferred securities were in an unrealized loss position. Aggregate unrealized losses represented 10.7% of the amortized cost of the securities in an unrealized loss position. The Company’s evaluation of the present value of expected cash flows on the security supports its conclusion about the recoverability of the securities’ amortized cost basis. The security is investment grade rated. The Company reviews the financial strength of all of the single issue trust issuers and has concluded that the amortized cost remains supported by the market value of the security and it is performing. HTM tax-advantaged economic development bonds At March 31, 2020, 3 out of the total 3 securities in the Company’s portfolio of tax-advantaged economic development bonds were in an unrealized loss position. Aggregate unrealized losses represented 2.1% of the amortized cost of the security in an unrealized loss position. The Company believes that more likely than not all the principal outstanding will be collected. All securities are performing.

LOANS AND ALLOWANCE FOR CREDIT

LOANS AND ALLOWANCE FOR CREDIT LOSSES	3 Months Ended
	Mar. 31, 2020
Credit Loss [Abstract]
LOANS AND ALLOWANCE FOR CREDIT LOSSES	LOANS AND ALLOWANCE FOR CREDIT LOSSES Upon adoption of ASC 326, the Company evaluates its risk characteristics of loans based on regulatory call report code with sub-segmentation based on underlying collateral for certain loan types. Prior to the adoption of ASC 326, under the incurred loss model, the Company evaluated its risk characteristics of loans based on purpose of the loans. The composition of loans by portfolio segment as of December 31, 2019 and January 1, 2020 follows: (In thousands) December 31, 2019 Statement Balance Impact of ASC 326 Adoption January 1, 2020 Post-ASC 326 Adoption Loans: Construction $ 448,452 $ 187 $ 448,639 Commercial multifamily 631,740 252 631,992 Commercial real estate owner occupied 673,308 3,185 676,493 Commercial real estate non-owner occupied 2,189,780 6,540 2,196,320 Commercial and industrial 1,522,059 (13,372 ) 1,508,687 Commercial and industrial - other 321,624 1,160 322,784 Residential real estate 2,853,385 1,868 2,855,253 Home equity 378,793 10 378,803 Consumer other 483,287 205 483,492 Total $ 9,502,428 $ 35 $ 9,502,463 Allowance: Construction $ 2,713 $ (342 ) $ 2,371 Commercial multifamily 4,413 (1,842 ) 2,571 Commercial real estate owner occupied 4,880 6,062 10,942 Commercial real estate non-owner occupied 16,344 11,201 27,545 Commercial and industrial 17,243 (2,696 ) 14,547 Commercial and industrial - other 2,856 507 3,363 Residential real estate 9,970 6,799 16,769 Home equity 1,470 4,884 6,354 Consumer other 3,686 861 4,547 Total $ 63,575 $ 25,434 $ 89,009 The following is a summary of total loans by regulatory call report code with sub-segmentation based on underlying collateral for certain loan types: (in thousands) March 31, 2020 December 31, 2019 Construction $ 463,803 $ 448,452 Commercial multifamily 606,257 631,740 Commercial real estate owner occupied 624,705 673,308 Commercial real estate non-owner occupied 2,212,816 2,189,780 Commercial and industrial 1,486,054 1,522,059 Commercial and industrial - other 319,809 321,624 Residential real estate 2,766,707 2,853,385 Home equity 377,135 378,793 Consumer other 445,891 483,287 Total loans $ 9,303,177 $ 9,502,428 Allowance for credit losses 113,510 63,575 Net loans $ 9,189,667 $ 9,438,853 Risk characteristics relevant to each portfolio segment are as follows: Commercial real estate multifamily, owner occupied and non-owner - Loans in these segments are primarily owner-occupied or income-producing properties throughout New England and Northeastern New York. The underlying cash flows generated by the properties are adversely impacted by a downturn in the economy, which in turn, will have an effect on the credit quality in this segment. Management monitors the cash flows of these loans. Construction - Loans in this segment primarily include real estate development loans for which payment is derived from sale of the property or long term financing at completion. Credit risk is affected by cost overruns, time to sell at an adequate price, and market conditions Commercial and industrial loans - Loans in this segment are made to businesses and are generally secured by assets of the business such as accounts receivable, inventory, marketable securities, other liquid collateral, equipment and other business assets. Repayment is expected from the cash flows of the business. Loans in this segment include asset based loans which generally have no scheduled repayment and which are closely monitored against formula based collateral advance ratios. A weakened economy, and resultant decreased consumer spending, will have an effect on the credit quality in this segment. Commercial and industrial other loans - Loans in this segment are primarily equipment financing loans. These loans are typically term loans secured by business assets. Credit quality on these loans are impacted by a weakened economy and resultant decreased consumer spending. Residential real estate - All loans in this segment are collateralized by residential real estate and repayment is dependent on the credit quality of the individual borrower. The overall health of the economy, including unemployment rates and housing prices, will have an effect on the credit quality in this segment. Home equity and other consumer loans - Loans in this segment are primarily home equity lines of credit, automobile loans and other consumer loans. The overall health of the economy, including unemployment rates and housing prices, will have an effect on the credit quality in this segment. Allowance for Credit Losses for Loans The Allowance for Credit Losses for Loans (“ACLL”) is comprised of the allowance for loan losses and the allowance for unfunded commitments which is accounted for as a separate liability in other liabilities on the balance sheet. The level of the ACLL represents management’s estimate of expected credit losses over the expected life of the loans at the balance sheet date. The Company uses a static pool migration analysis method, applying expected historical loss trend and observed economic metrics. The level of the ACLL is based on management’s ongoing review of all relevant information, from internal and external sources, relating to past and current events, utilizing a 7 quarter reasonable and supportable forecast period. The ACLL reserve is overlaid with qualitative factors based upon: • the existence and growth of concentrations of credit; • the volume and severity of past due financial assets, including nonaccrual assets; • the institutions lending and credit review as well as the experience and ability of relevant management and staff and; • the effect of other external factors such as regulatory, competition, regional market conditions, legal and technological environment and other events such as natural disasters. The allowance for unfunded commitments is maintained at a level by the Company to be sufficient to absorb expected lifetime losses related to unfunded credit facilities (including unfunded loan commitments and letters of credit). The Company’s activity in the allowance for credit losses for loans for the three months ended March 31, 2020 was as follows: (in thousands) Balance at Beginning of Period Impact of Adopting ASC 326 Sub-total Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Three months ended March 31, 2020 Construction $ 2,713 $ (342 ) $ 2,371 $ — $ — $ 2,202 $ 4,573 Multifamily 4,413 (1,842 ) 2,571 — — 1,882 4,453 Commercial real estate owner occupied 4,880 6,062 10,942 (6,376 ) 258 6,783 11,607 Commercial real estate non-owner occupied 16,344 11,201 27,545 (135 ) 47 1,406 28,863 Commercial and industrial 17,243 (2,696 ) 14,547 (4,428 ) 1,354 8,364 19,837 Commercial and industrial - other 2,856 507 3,363 (488 ) 48 1,742 4,665 Residential real estate 9,970 6,799 16,769 (171 ) 70 9,389 26,057 Home equity 1,470 4,884 6,354 (77 ) 2 1,501 7,780 Consumer other 3,686 861 4,547 (758 ) 180 1,706 5,675 Total allowance for credit losses $ 63,575 $ 25,434 $ 89,009 $ (12,433 ) $ 1,959 $ 34,975 $ 113,510 The Company’s allowance for credit losses on unfunded commitments is recognized as a liability (other liability on consolidated balance sheet), with adjustments to the reserve recognized in other noninterest expense in the consolidated statement of operations. The Company’s activity in the allowance for credit losses on unfunded commitments for the three months ended March 31, 2020 was as follows: (in thousands) Total Balance at beginning of period $ 100 Impact of adopting ASC 326 7,993 Sub-Total 8,093 Expense for credit losses 330 Balance at end of period $ 8,423 Credit Quality Information The Company monitors the credit quality of its portfolio by using internal risk ratings that are based on regulatory guidance. Loans that are given a Pass rating are not considered a problem credit. Loans that are classified as Special Mention loans are considered to have potential weaknesses and are evaluated closely by management. Substandard and non-accruing loans are loans for which a definitive weakness has been identified and which may make full collection of contractual cash flows questionable. Doubtful loans are those with identified weaknesses that make full collection of contractual cash flows, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. For commercial credits, the Company assigns an internal risk rating at origination and reviews the rating annual, semiannually, or quarterly depending on the risk rating. The rating is also reassessed at any point in time when management becomes aware of information that may affect the borrower’s ability to fulfill their obligations. The Company risk rates its residential mortgages, including 1-4 family and residential construction loans, based on a three rating system: Pass, Special Mention, and Substandard. Loans that are current within 59 days are rated Pass. Residential mortgages that are 60-89 days delinquent are rated Special Mention. Loans delinquent for 90 days or greater are rated Substandard and generally placed on non-accrual status. The following table presents the Company’s loans by risk category: Term Loans Amortized Cost Basis by Origination Year (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of March 31, 2020 Construction Risk rating Pass $ 4,218 $ 175,665 $ 203,349 $ 57,368 $ 17,680 $ 3,637 $ 136 $ — $ 462,053 Special Mention — — — — — — — — — Substandard — — — — — 1,750 — — 1,750 Total $ 4,218 $ 175,665 $ 203,349 $ 57,368 $ 17,680 $ 5,387 $ 136 $ — $ 463,803 Commercial multifamily: Risk rating Pass $ 3,427 $ 53,936 $ 98,767 $ 86,801 $ 113,350 $ 240,457 $ 911 $ — $ 597,649 Special Mention — — — — — — — — — Substandard — — — — — 8,457 151 — 8,608 Total $ 3,427 $ 53,936 $ 98,767 $ 86,801 $ 113,350 $ 248,914 $ 1,062 $ — $ 606,257 Commercial real estate owner occupied: Risk rating Pass $ 13,229 $ 96,993 $ 121,157 $ 67,848 $ 37,469 $ 242,264 $ 4,810 $ — $ 583,770 Special Mention — — 2,132 2,624 2,429 548 1,657 — 9,390 Substandard — — 5,325 1,235 2,072 22,863 50 — 31,545 Total $ 13,229 $ 96,993 $ 128,614 $ 71,707 $ 41,970 $ 265,675 $ 6,517 $ — $ 624,705 Commercial real estate non-owner occupied: Risk rating Pass $ 29,059 $ 304,620 $ 397,618 $ 276,233 $ 351,479 $ 762,925 $ 18,241 $ — $ 2,140,175 Special Mention — — 751 — 1,200 6,002 — — 7,953 Substandard 8,845 — 3,039 8,617 1,495 42,497 195 — 64,688 Total $ 37,904 $ 304,620 $ 401,408 $ 284,850 $ 354,174 $ 811,424 $ 18,436 $ — $ 2,212,816 Commercial and industrial: Risk rating Pass $ 33,562 $ 142,058 $ 253,788 $ 154,409 $ 63,737 $ 208,174 $ 554,874 $ — $ 1,410,602 Special Mention — 60 14,444 1,276 650 — 28,565 — 44,995 Substandard — 505 7,011 2,561 2,243 6,066 11,565 — 29,951 Doubtful — — — — — — 506 — 506 Total $ 33,562 $ 142,623 $ 275,243 $ 158,246 $ 66,630 $ 214,240 $ 595,510 $ — $ 1,486,054 Term Loans Amortized Cost Basis by Origination Year (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial and industrial - other: Risk rating Pass $ 21,873 $ 112,378 $ 90,685 $ 41,369 $ 11,316 $ 19,252 $ 6,132 $ — $ 303,005 Special Mention — — — — — — — — — Substandard — 1,129 3,833 1,193 3,545 2,931 4,173 — 16,804 Doubtful — — — — — — — — — Total $ 21,873 $ 113,507 $ 94,518 $ 42,562 $ 14,861 $ 22,183 $ 10,305 $ — $ 319,809 Residential real estate Risk rating Pass 53,634 200,007 572,834 510,162 467,010 943,845 2,389 — $ 2,749,881 Special Mention — — — 98 — 1,382 — — 1,480 Substandard — 97 169 1,000 777 13,293 10 — 15,346 Total $ 53,634 $ 200,104 $ 573,003 $ 511,260 $ 467,787 $ 958,520 $ 2,399 $ — $ 2,766,707 For home equity and consumer other loan portfolio segments, Berkshire evaluates credit quality based on the aging status of the loan and by payment activity. The performing or nonperforming status is updated on an ongoing basis dependent upon improvement and deterioration in credit quality. The following table presents the amortized cost based on payment activity: Term Loans Amortized Cost Basis by Origination Year (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of March 31, 2020 Home equity: Payment performance Performing $ 264 $ 285 $ — $ — $ — $ 41 $ 374,221 $ — $ 374,811 Nonperforming — — 4 — — 16 2,304 — 2,324 Total $ 264 $ 285 $ 4 $ — $ — $ 57 $ 376,525 $ — $ 377,135 Consumer other: Payment performance Performing $ 3,666 $ 47,684 $ 156,080 $ 108,699 $ 64,219 $ 51,077 $ 10,966 $ — $ 442,391 Nonperforming — 231 831 1,098 780 434 126 — 3,500 Total $ 3,666 $ 47,915 $ 156,911 $ 109,797 $ 64,999 $ 51,511 $ 11,092 $ — $ 445,891 The following is a summary of loans by past due status at March 31, 2020: (in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans March 31, 2020 Construction $ — $ — $ — $ — $ 463,803 $ 463,803 Commercial multifamily 20 — 803 823 605,434 606,257 Commercial real estate owner occupied 6,141 149 12,428 18,718 605,987 624,705 Commercial real estate non-owner occupied 6,978 6,868 2,609 16,455 2,196,361 2,212,816 Commercial and industrial 1,800 750 12,593 15,143 1,470,911 1,486,054 Commercial and industrial - other 843 700 7,617 9,160 310,649 319,809 Residential real estate 6,445 2,070 14,082 22,597 2,744,110 2,766,707 Home equity 2,069 318 2,528 4,915 372,220 377,135 Consumer other 3,751 681 3,508 7,940 437,951 445,891 Total $ 28,047 $ 11,536 $ 56,168 $ 95,751 $ 9,207,426 $ 9,303,177 The following is a summary of loans on nonaccrual status and loans past due 90 days or more and still accruing as of March 31, 2020: (in thousands) Beginning of Period Nonaccrual Amortized Cost End of Period Nonaccrual Amortized Cost Nonaccrual With No Related Allowance Past Due 90 Days or Greater and Accruing Interest Income Recognized on Nonaccrual At or for the three months ended March 31, 2020 Construction $ — $ — $ — $ — $ — Commercial multifamily 811 803 380 — — Commercial real estate owner occupied 15,389 10,596 7,967 1,832 — Commercial real estate non-owner occupied 1,031 1,555 — 1,054 — Commercial and industrial 5,465 10,743 1,405 1,850 — Commercial and industrial - other 5,753 7,617 6,009 — — Residential real estate 6,411 13,978 2,908 104 — Home equity 1,798 2,324 279 204 — Consumer other 2,982 3,500 — 8 — Total $ 39,640 $ 51,116 $ 18,948 $ 5,052 $ — The commercial and industrial loans nonaccrual amortized cost includes medallion loans with a fair value of $4.9 million and a contractual balance of $71.7 million . A financial asset is considered collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. Expected credit losses for collateral-dependent loans are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. Significant quarter over quarter changes are reflective of changes in nonaccrual status and not necessarily associated with credit quality indicators like appraisal value. The following table presents the amortized cost basis of individually analyzed collateral-dependent loans by loan portfolio segment: Type of Collateral (in thousands) Real Estate Investment Securities/Cash Other March 31, 2020 Construction $ — $ — $ — Commercial multifamily 603 — — Commercial real estate owner occupied 11,676 — — Commercial real estate non-owner occupied 2,370 — — Commercial and industrial 865 59 860 Commercial and industrial - other — — 6,144 Residential real estate 10,614 — — Home equity 732 — — Consumer other 76 — — Total loans $ 26,936 $ 59 $ 7,004 Troubled Debt Restructuring Loans The Company’s loan portfolio also includes certain loans that have been modified in a Troubled Debt Restructuring (TDR), where economic concessions have been granted to borrowers who have experienced or are expected to experience financial difficulties. These concessions typically result from the Company’s loss mitigation activities and could include reductions in the interest rate, payment extensions, forgiveness of principal, forbearance, or other actions. Certain TDRs are classified as nonperforming at the time of restructure and may only be returned to performing status after considering the borrower’s sustained repayment performance for a reasonable period, generally six months. TDRs are evaluated individually for impairment and may result in a specific allowance amount allocated to an individual loan. The following table presents activity in TDRs for the three months ended March 31, 2020: (in thousands) Balance at beginning of period Principal payments TDR Status change Other reductions Newly identified TDRs Balance at end of period Three months ended March 31, 2020 Construction $ — $ — $ — $ — $ — $ — Commercial multifamily 793 (14 ) — — — 779 Commercial real estate owner occupied 13,331 (5,693 ) — — — 7,638 Commercial real estate non-owner occupied 1,373 — — — — 1,373 Commercial and industrial 1,109 (13 ) — — — 1,096 Commercial and industrial - other 340 (24 ) — — 902 1,218 Residential real estate 2,045 (22 ) — — — 2,023 Home equity 277 1 — — — 278 Consumer other 48 (4 ) — — — 44 Total $ 19,316 $ (5,769 ) $ — $ — $ 902 $ 14,449 The following table presents loans modified as TDRs that occurred during the three months ended March 31, 2020 and 2019: (dollars in thousands) Total Three months ended March 31, 2020 TDR: Number of loans 3 Pre-modification outstanding recorded investment $ 902 Post-modification outstanding recorded investment $ 902 Three months ended March 31, 2019 TDR: Number of loans 3 Pre-modification outstanding recorded investment $ 338 Post-modification outstanding recorded investment $ 338 There were no TDRs for which there was a payment default within twelve months following the modification during the three months ended March 31, 2020 and 2019. Prior to the adoption of ASC 326 on January 1, 2020, the Company calculated allowance for loan losses using incurred losses methodology. The following tables are disclosures related to loans in prior periods. The following is a summary of total loans as of December 31, 2019 : December 31, 2019 (In thousands) Business Acquired Total Commercial real estate: Construction $ 382,014 $ 47,792 $ 429,806 Other commercial real estate 2,414,942 1,189,521 3,604,463 Total commercial real estate 2,796,956 1,237,313 4,034,269 Commercial and industrial loans: 1,442,617 397,891 1,840,508 Total commercial loans 4,239,573 1,635,204 5,874,777 Residential mortgages: 1-4 family 2,143,817 533,536 2,677,353 Construction 4,641 3,478 8,119 Total residential mortgages 2,148,458 537,014 2,685,472 Consumer loans: Home equity 273,867 106,724 380,591 Auto and other 504,599 56,989 561,588 Total consumer loans 778,466 163,713 942,179 Total loans $ 7,166,497 $ 2,335,931 $ 9,502,428 Total unamortized net costs and premiums included in the December 31, 2019 total loans for business activity loans were the following: (In thousands) December 31, 2019 Unamortized net loan origination costs $ 13,259 Unamortized net premium on purchased loans 2,643 Total unamortized net costs and premiums $ 15,902 The following table summarizes activity in the accretable yield for the acquired loan portfolio that falls under the purview of ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality : (In thousands) March 31, 2019 Balance at beginning of period $ 2,840 Accretion (1,320 ) Net reclassification from nonaccretable difference 665 Payments received, net (55 ) Reclassification to TDR 9 Balance at end of period $ 2,139 The following is a summary of past due loans at December 31, 2019: Business Activities Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Current Total Loans Past Due > December 31, 2019 Commercial real estate: Construction $ — $ — $ — $ — $ 382,014 $ 382,014 $ — Commercial real estate 423 89 15,623 16,135 2,398,807 2,414,942 — Total 423 89 15,623 16,135 2,780,821 2,796,956 — Commercial and industrial loans Total 2,841 2,033 10,662 15,536 1,427,081 1,442,617 122 Residential mortgages: 1-4 family 1,669 714 3,350 5,733 2,138,084 2,143,817 800 Construction — — — — 4,641 4,641 — Total 1,669 714 3,350 5,733 2,142,725 2,148,458 800 Consumer loans: Home equity 149 — 1,147 1,296 272,571 273,867 52 Auto and other 4,709 990 2,729 8,428 496,171 504,599 1 Total 4,858 990 3,876 9,724 768,742 778,466 53 Total $ 9,791 $ 3,826 $ 33,511 $ 47,128 $ 7,119,369 $ 7,166,497 $ 975 Acquired Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Acquired Total Loans Past Due > December 31, 2019 Commercial real estate: Construction $ — $ — $ — $ — $ 1,396 $ 47,792 $ — Commercial real estate 3,907 245 10,247 14,399 21,639 1,189,521 5,751 Total 3,907 245 10,247 14,399 23,035 1,237,313 5,751 Commercial and industrial loans Total 888 299 1,275 2,462 26,718 397,891 442 Residential mortgages: 1-4 family 745 491 932 2,168 10,840 533,536 139 Construction — — — — — 3,478 — Total 745 491 932 2,168 10,840 537,014 139 Consumer loans: Home equity 346 222 789 1,357 540 106,724 72 Auto and other 120 22 265 407 286 56,989 — Total 466 244 1,054 1,764 826 163,713 72 Total $ 6,006 $ 1,279 $ 13,508 $ 20,793 $ 61,419 $ 2,335,931 $ 6,404 The following is summary information pertaining to non-accrual loans at year-end 2019: December 31, 2019 (In thousands) Business Activities Acquired Loans Total Commercial real estate: Construction $ — $ — $ — Other commercial real estate 15,623 4,496 20,119 Total 15,623 4,496 20,119 Commercial and industrial loans: Total 10,540 833 11,373 Residential mortgages: 1-4 family 2,550 793 3,343 Construction — — — Total 2,550 793 3,343 Consumer loans: Home equity 1,095 717 1,812 Auto and other 2,728 265 2,993 Total 3,823 982 4,805 Total non-accrual loans $ 32,536 $ 7,104 $ 39,640 Loans evaluated for impairment as of December 31, 2019 were as follows: Business Activities Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 19,192 $ 9,167 $ 3,019 $ 630 $ 32,008 Collectively evaluated 2,777,764 1,433,450 2,145,439 777,836 7,134,489 Total $ 2,796,956 $ 1,442,617 $ 2,148,458 $ 778,466 $ 7,166,497 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 4,241 $ 464 $ 372 $ 575 $ 5,652 Purchased credit-impaired loans 23,035 26,718 10,840 826 61,419 Collectively evaluated 1,210,037 370,709 525,802 162,312 2,268,860 Total $ 1,237,313 $ 397,891 $ 537,014 $ 163,713 $ 2,335,931 The following is a summary of impaired loans at December 31, 2019: Business Activities Loans December 31, 2019 (In thousands) Recorded Investment (1) Unpaid Principal Related Allowance With no related allowance: Other commercial real estate loans $ 18,676 $ 37,493 $ — Commercial and industrial loans 4,805 10,104 — Residential mortgages - 1-4 family 433 699 — Consumer - home equity 32 238 — Consumer - other — — — With an allowance recorded: Other commercial real estate loans $ 550 $ 1,411 $ 20 Commercial and industrial loans 4,166 12,136 122 Residential mortgages - 1-4 family 2,615 2,924 109 Consumer - home equity 594 614 42 Consumer - other 8 8 1 Total Commercial real estate $ 19,226 $ 38,904 $ 20 Commercial and industrial loans 8,971 22,240 122 Residential mortgages 3,048 3,623 109 Consumer 634 860 43 Total impaired loans $ 31,879 $ 65,627 $ 294 (1) The Recorded Investment represents the face amount of the loan increased or decreased by applicable accrued interest, net deferred loan fees and costs, and unamortized premium or discount, and reflects direct charge-offs. This amount is a component of total loans on the Consolidated Balance Sheet. (2) The Unpaid Principal Balance represents the customer's legal obligation to the Company. Acquired Loans December 31, 2019 (In thousands) Recorded Investment (1) Unpaid Principal Related Allowance With no related allowance: Other commercial real estate loans $ 3,200 $ 6,021 $ — Other commercial and industrial loans 437 532 — Residential mortgages - 1-4 family 292 293 — Consumer - home equity 416 844 — Consumer - other — — — With an allowance recorded: Other commercial real estate loans $ 1,033 $ 1,050 $ 97 Commercial and industrial loans 28 30 1 Residential mortgages - 1-4 family 84 110 8 Consumer - home equity 121 123 6 Consumer - other 39 37 6 Total Commercial real estate $ 4,233 $ 7,071 $ 97 Commercial and industrial loans 465 562 1 Residential mortgages 376 403 8 Consumer 576 1,004 12 Total impaired loans $ 5,650 $ 9,040 $ 118 (1) The Recorded Investment represents the face amount of the loan increased or decreased by applicable accrued interest, net deferred loan fees and costs, and unamortized premium or discount, and reflects direct charge-offs. This amount is a component of total loans on the Consolidated Balance Sheet. (2) The Unpaid Principal Balance represents the customer's legal obligation to the Company. The following is a summary of the average recorded investment and interest income recognized on impaired loans as of December 31, 2019: Business Activities Loans December 31, 2019 (in thousands) Average Recorded Cash Basis Interest With no related allowance: Other commercial real estate $ 19,805 $ 586 Other commercial and industrial 3,165 523 Residential mortgages - 1-4 family 185 17 Consumer-home equity 148 3 Consumer-other — — With an allowance recorded: Other commercial real estate $ 374 $ 107 Other commercial and industrial 2,533 793 Residential mortgages - 1-4 family 2,427 150 Consumer-home equity 349 32 Consumer - other 11 1 Total Commercial real estate $ 20,179 $ 693 Commercial and industrial 5,698 1,316 Residential mortgages 2,612 167 Consumer loans 508 36 Total impaired loans $ 28,997 $ 2,212 Acquired Loans December 31, 2019 (in thousands) Average Recorded Cash Basis Interest With no related allowance: Other commercial real estate $ 1,603 $ 117 Other commercial and industrial 441 51 Residential mortgages - 1-4 family 241 11 Consumer - home equity 475 23 Consumer - other — — With an allowance recorded: Other commercial real estate $ 1,005 $ 59 Other commercial and industrial 29 2 Residential mortgages - 1-4 family 88 7 Consumer - home equity 68 6 Consumer - other 41 2 Total Commercial real estate $ 2,608 $ 176 Commercial and industrial 470 53 Residential mortgages 329 18 Consumer loans 584 31 Total impaired loans $ 3,991 $ 278 No additional funds are committed to be advanced in connection with impaired loans. The modifications for the three months ended March 31, 2019 were attributable to interest rate concessions, maturity date extensions, modified payment terms, reamortization, and accelerated maturity. Modifications by Class Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial real estate 2 $ 145 $ 145 Commercial and industrial loans 1 193 193 3 $ 338 $ 338 There were no TDRs that defaulted within twelve months of modifications during the three months ended March 31, 2019. The following table presents the Company’s TDR activity for the three months ended March 31, 2019: (In thousands) March 31, 2019 Balance at beginning of year $ 27,415 Principal payments (1,413 ) TDR status change (1) — Other reductions (2) (1,155 ) Newly identified TDRs 338 Balance at end of year $ 25,185 ________________________________ (1) TDR status change classification represents TDR loans with a specified interest rate equal to or greater than the rate that the Company was willing to accept at the time of the restructuring for a new loan with comparable risk and the loan was on current payment status and not impaired based on the terms specified by the restructuring agreement. (2) Other reductions classification consists of transfer to other real estate owned, charge-offs to loans, and other loan sale payoffs. Allowance for Loan Losses Prior to the adoption of ASC 326 on January 1, 2020, Berkshire calculated allowance for loan losses using incurred losses methodology. The following tables are disclosures related to the allowance for loan losses in prior periods. Activity in the allowance for loan losses for the three months ended March 31, 2019 was as follows: At or for the three months ended March 31, 2019 Business Activities Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Total Balance at beginning of period $ 21,732 $ 16,504 $ 10,535 $ 7,368 $ 56,139 Charged-off loans 1,256 1,676 42 919 3,893 Recoveries on charged-off loans 208 307 15 54 584 Provision/(releases) for loan losses 1,837 3,112 (1,299 ) (268 ) 3,382 Balance at end of period $ 22,521 $ 18,247 $ 9,209 $ 6,235 $ 56,212 Individually evaluated for impairment 7 52 120 9 188 Collectively evaluated for impairment 22,514 18,195 9,089 6,226 56,024 Total $ 22,521 $ 18,247 $ 9,209 $ 6,235 $ 56,212 At or for the three months ended March 31, 2019 Acquired Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Total Balance at beginning of period $ 3,153 $ 1,064 $ 630 $ 483 $ 5,330 Charged-off loans 180 262 73 171 686 Recoveries on charged-off loans 476 51 5 31 563 Provision/(releases) for loan losses 461 26 60 72 619 Balance at end of period $ 3,910 $ 879 $ 622 $ 415 $ 5,826 Individually evaluated for impairment 48 4 36 44 132 Collectively evaluated for impairment 3,862 875 586 371 5,694 Total $ 3,910 $ 879 $ 622 $ 415 $ 5,826 The following tables present the Company’s loans by risk rating at December 31, 2019: Business Activities Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category (In thousands) Construction Real Estate Total Commercial Real Estate Grade: Pass $ 382,014 $ 2,354,375 $ 2,736,389 Special mention — 12,167 12,167 Substandard — 48,400 48,400 Total $ 382,014 $ 2,414,942 $ 2,796,956 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category (In thousands) Total Commercial and Industrial Loans Grade: Pass $ 1,366,342 Special mention 50,072 Substandard 24,112 Doubtful 2,091 Total $ 1,442,617 Residential Mortgages Credit Risk Profile by Internally Assigned Grade (In thousands) 1-4 Family Construction Total Residential Mortgages Grade: Pass $ 2,139,753 $ 4,641 $ 2,144,394 Special mention 714 — 714 Substandard 3,350 — 3,350 Total $ 2,143,817 $ 4,641 $ 2,148,458 Consumer Loans Credit Risk Profile Based on Payment Activity (In thousands) Home Equity Auto and Other Total Consumer Loans Performing $ 272,772 $ 501,871 $ 774,643 Nonperforming 1,095 2,728 3,823 Total $ 273,867 $ 504,599 $ 778,466 Acquired Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category (In thousands) Construction Real Estate Total Commercial Real Estate Grade: Pass $ 46,396 $ 1,130,333 $ 1,176,729 Special mention — 5,993 5,993 Substandard 1,396 53,195 54,591 Total $ 47,792 $ 1,189,521 $ 1,237,313 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category (In thousands) Total Commercial and Industrial Loans Grade: Pass $ 373,744 Special mention 4,404 Substandard 19,743 Total $ 397,891 Residential Mortgages Credit Risk Profile by Internally Assigned Grade (In thousands) 1-4 Family Construction Total Residential Mortgages Grade: Pass $ 528,282 $ 3,478 $ 531,760 Special mention 592 — 592 Substandard 4,662 — 4,662 Total $ 533,536 $ 3,478 $ 537,014 Consumer Loans Credit Risk Profile Based on Payment Activity (In thousands) Home Equity Auto and Other Total Consumer Loans Performing $ 106,007 $ 56,724 $ 162,731 Nonperforming 717 265 982 Total $ 106,724 $ 56,989 $ 163,713 The following table summarizes information about total loans rated Special Mention or lower at December 31, 2019. The table below includes consumer loans that are Special Mention and Substandard accruing that are classified in the above table as performing based on payment activity. December 31, 2019 (In thousands) Business Acquired Loans Total Non-Accrual $ 32,536 $ 7,104 $ 39,640 Substandard Accruing 49,293 73,131 122,424 Total Classified 81,829 80,235 162,064 Special Mention 63,943 11,341 75,284 Total Criticized $ 145,772 $ 91,576 $ 237,348

DEPOSITS

DEPOSITS	3 Months Ended
	Mar. 31, 2020
Deposits [Abstract]
DEPOSITS	DEPOSITS A summary of time deposits is as follows: (In thousands) March 31, December 31, Time less than $100,000 $ 871,215 $ 905,190 Time $100,000 through $250,000 1,825,472 2,027,717 Time more than $250,000 647,013 656,462 Total time deposits $ 3,343,700 $ 3,589,369 Included in total deposits are brokered deposits of $1.0 billion and $1.2 billion at March 31, 2020 and December 31, 2019 , respectively. Included in total deposits are reciprocal deposits of $104.9 million and $91.7 million at March 31, 2020 and December 31, 2019 , respectively.

BORROWED FUNDS

BORROWED FUNDS	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
BORROWED FUNDS	BORROWED FUNDS Borrowed funds at March 31, 2020 and December 31, 2019 are summarized, as follows: March 31, 2020 December 31, 2019 Weighted Weighted Average Average (Dollars in thousands) Principal Rate Principal Rate Short-term borrowings: Advances from the FHLB $ 225,000 1.45 % $ 125,000 2.06 % Total short-term borrowings: 225,000 1.45 125,000 2.06 Long-term borrowings: Advances from the FHLB and other borrowings 719,053 2.07 605,501 2.16 Subordinated borrowings 74,277 7.00 74,232 7.00 Junior subordinated borrowing - Trust I 15,464 2.44 15,464 3.76 Junior subordinated borrowing - Trust II 7,366 3.53 7,353 3.59 Total long-term borrowings: 816,160 2.54 702,550 2.72 Total $ 1,041,160 2.30 % $ 827,550 2.62 % Short-term debt includes Federal Home Loan Bank (“FHLB”) advances with an original maturity of less than one year and a short-term line-of-credit drawdown through a correspondent bank. The Bank also maintains a $3.0 million secured line of credit with the FHLB that bears a daily adjustable rate calculated by the FHLB. There was no outstanding balance on the FHLB line of credit for the periods ended March 31, 2020 and December 31, 2019 . The Bank's available borrowing capacity with the FHLB was $1.4 billion and $1.6 billion for the periods ended March 31, 2020 and December 31, 2019. The Bank is approved to borrow on a short-term basis from the Federal Reserve Bank of Boston as a non-member bank. The Bank has pledged certain loans and securities to the Federal Reserve Bank to support this arrangement. No borrowings with the Federal Reserve Bank took place for the periods ended March 31, 2020 and December 31, 2019 . The Bank's available borrowing capacity with the Federal Reserve Bank was $557.8 million and $201.3 million for the periods ended March 31, 2020 and December 31, 2019. Long-term FHLB advances consist of advances with an original maturity of more than one year and are subject to prepayment penalties. The advances outstanding at March 31, 2020 include callable advances totaling $10.0 million and amortizing advances totaling $6.0 million . The advances outstanding at December 31, 2019 include callable advances totaling $10.0 million and amortizing advances totaling $4.4 million . All FHLB borrowings, including the line of credit, are secured by a blanket security agreement on certain qualified collateral, principally all residential first mortgage loans and certain securities. A summary of maturities of FHLB advances as of March 31, 2020 is as follows: March 31, 2020 Weighted Average (In thousands, except rates) Principal Rate Fixed rate advances maturing: 2020 $ 468,180 2.02 % 2021 395,476 1.80 2022 59,136 1.92 2023 11,675 2.21 2023 and beyond 9,586 1.61 Total FHLB advances $ 944,053 1.92 % The Company did not have variable-rate FHLB advances for the periods ended March 31, 2020 and December 31, 2019 . In September 2012, the Company issued fifteen year subordinated notes in the amount of $75.0 million at a discount of 1.15% . The interest rate is fixed at 6.875% for the first ten years . After ten years , the notes become callable and convert to an interest rate of three-month LIBOR rate plus 5.113% . The subordinated note includes reduction to the note principal balance of $307 thousand and $338 thousand for unamortized debt issuance costs as of March 31, 2020 and December 31 2019, respectively. The Company holds 100% of the common stock of Berkshire Hills Capital Trust I (“Trust I”) which is included in other assets with a cost of $0.5 million . The sole asset of Trust I is $15.5 million of the Company’s junior subordinated debentures due in 2035. These debentures bear interest at a variable rate equal to LIBOR plus 1.85% and had a rate of 2.44% and 3.76% at March 31, 2020 and December 31, 2019 , respectively. The Company has the right to defer payments of interest for up to five years on the debentures at any time, or from time to time, with certain limitations, including a restriction on the payment of dividends to shareholders while such interest payments on the debentures have been deferred. The Company has not exercised this right to defer payments. The Company has the right to redeem the debentures at par value. Trust I is considered a variable interest entity for which the Company is not the primary beneficiary. Accordingly, Trust I is not consolidated into the Company’s financial statements. The Company holds 100% of the common stock of SI Capital Trust II (“Trust II”) which is included in other assets with a cost of $0.2 million . The sole asset of Trust II is $8.2 million of the Company’s junior subordinated debentures due in 2036. These debentures bear interest at a variable rate equal to LIBOR plus 1.70% and had a rate of 3.53% and 3.59% at March 31, 2020 and December 31, 2019 , respectively. The Company has the right to defer payments of interest for up to five years on the debentures at any time, or from time to time, with certain limitations, including a restriction on the payment of dividends to shareholders while such interest payments on the debentures have been deferred. The Company has not exercised this right to defer payments. The Company has the right to redeem the debentures at par value. Trust II is considered a variable interest entity for which the Company is not the primary beneficiary. Accordingly, Trust II is not consolidated into the Company’s financial statements.

DERIVATIVE INSTRUMENTS AND HEDG

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES As of March 31, 2020 , the Company held derivatives with a total notional amount of $4.2 billion . The Company had economic hedges and non-hedging derivatives totaling $4.0 billion and $0.2 billion , respectively, which are not designated as hedges for accounting purposes with changes in fair value recorded directly through earnings. Economic hedges included interest rate swaps totaling $3.4 billion , risk participation agreements with dealer banks of $0.3 billion , and $0.3 billion in forward commitment contracts. Forward sale commitments and commitments to lend are included in discontinued operations. See Note 2 - Discontinued Operations for more information on assets and liabilities classified as discontinued operations. As part of the Company’s risk management strategy, the Company enters into interest rate swap agreements to mitigate the interest rate risk inherent in certain of the Company’s assets and liabilities. Interest rate swap agreements involve the risk of dealing with both Bank customers and institutional derivative counterparties and their ability to meet contractual terms. The agreements are entered into with counterparties that meet established credit standards and contain master netting and collateral provisions protecting the at-risk party. The derivatives program is overseen by the Risk Management and Capital Committee of the Company’s Board of Directors. Based on adherence to the Company’s credit standards and the presence of the netting and collateral provisions, the Company believes that the credit risk inherent in these contracts was not significant at March 31, 2020 . The Company pledged collateral to derivative counterparties in the form of cash totaling $72.4 million and securities with an amortized cost of $35.0 million and a fair value of $35.5 million as of March 31, 2020 . The Company does not typically require its commercial customers to post cash or securities as collateral on its program of back-to-back economic hedges. However certain language is written into the International Swaps Dealers Association, Inc. (“ISDA”) and loan documents where, in default situations, the Bank is allowed to access collateral supporting the loan relationship to recover any losses suffered on the derivative asset or liability. The Company may need to post additional collateral in the future in proportion to potential increases in unrealized loss positions. Information about derivative assets and liabilities at March 31, 2020 , follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Economic hedges: Interest rate swap on tax advantaged economic development bond $ 9,209 9.7 1.95 % 5.09 % $ (2,051 ) Interest rate swaps on loans with commercial loan customers 1,674,769 6.3 4.34 % 2.96 % 177,708 Offsetting interest rate swaps on loans with commercial loan customers (1) 1,674,769 6.3 2.96 % 4.34 % (73,046 ) Risk participation agreements with dealer banks 315,756 7.3 586 Forward sale commitments (2) 309,965 0.2 (4,490 ) Total economic hedges 3,984,468 98,707 Non-hedging derivatives: Commitments to lend (2) 213,088 0.2 4,836 Total non-hedging derivatives 213,088 4,836 Total $ 4,197,556 $ 103,543 (1) Fair value estimates include the impact of $109 million settled to market contract agreements. (2) Includes the impact of discontinued operations. Information about derivative assets and liabilities at December 31, 2019 , follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Economic hedges: Interest rate swap on tax advantaged economic development bond $ 9,390 9.9 2.08 % 5.09 % $ (1,488 ) Interest rate swaps on loans with commercial loan customers 1,669,895 6.4 4.38 % 3.28 % 75,326 Offsetting interest rate swaps on loans with commercial loan customers 1,669,895 6.4 3.28 % 4.38 % (77,051 ) Risk participation agreements with dealer banks 315,140 7.5 320 Forward sale commitments (1) 237,412 0.2 (227 ) Total economic hedges 3,901,732 (3,120 ) Non-hedging derivatives: Commitments to lend (1) 168,997 0.2 2,628 Total non-hedging derivatives 168,997 2,628 Total $ 4,070,729 $ (492 ) (1) Includes the impact of discontinued operations. Economic hedges As of March 31, 2020 , the Company has an interest rate swap with a $9.2 million notional amount to swap out the fixed rate of interest on an economic development bond bearing a fixed rate of 5.09% , currently within the Company’s trading portfolio under the fair value option, in exchange for a LIBOR-based floating rate. The intent of the economic hedge is to improve the Company’s asset sensitivity to changing interest rates in anticipation of favorable average floating rates of interest over the 21 -year life of the bond. The fair value changes of the economic development bond are mostly offset by fair value changes of the related interest rate swap. The Company also offers certain derivative products directly to qualified commercial borrowers. The Company economically hedges derivative transactions executed with commercial borrowers by entering into mirror-image, offsetting derivatives with third-party financial institutions. The transaction allows the Company’s customer to convert a variable-rate loan to a fixed rate loan. Because the Company acts as an intermediary for its customer, changes in the fair value of the underlying derivative contracts mostly offset each other in earnings. Credit valuation loss adjustments arising from the difference in credit worthiness of the commercial loan and financial institution counterparties totaled $2.5 million as of March 31, 2020 . The interest income and expense on these mirror image swaps exactly offset each other. The Company has risk participation agreements with dealer banks. Risk participation agreements occur when the Company participates on a loan and a swap where another bank is the lead. The Company gets paid a fee to take on the risk associated with having to make the lead bank whole on Berkshire’s portion of the pro-rated swap should the borrower default. Changes in fair value are recorded in current period earnings. The Company utilizes forward sale commitments to hedge interest rate risk and the associated effects on the fair value of interest rate lock commitments and loans originated for sale. The forward sale commitments are accounted for as derivatives with changes in fair value recorded in current period earnings. Forward sale commitments are included in discontinued operations. See Note 2 - Discontinued Operations for more information on assets and liabilities classified as discontinued operations. The Company uses the following types of forward sale commitments contracts: • Best efforts loan sales, • Mandatory delivery loan sales, and • To Be Announced (“TBA”) mortgage-backed securities sales. A best efforts contract refers to a loan sale agreement where the Company commits to deliver an individual mortgage loan of a specified principal amount and quality to an investor if the loan to the underlying borrower closes. The Company may enter into a best efforts contract once the price is known, which is shortly after the potential borrower’s interest rate is locked. A mandatory delivery contract is a loan sale agreement where the Company commits to deliver a certain principal amount of mortgage loans to an investor at a specified price on or before a specified date. Generally, the Company may enter into mandatory delivery contracts shortly after the loan closes with a customer. The Company may sell TBA mortgage-backed securities to hedge the changes in fair value of interest rate lock commitments and held for sale loans, which do not have corresponding best efforts or mandatory delivery contracts. These security sales transactions are closed once mandatory contracts are written. On the closing date the price of the security is locked-in, and the sale is paired-off with a purchase of the same security. Settlement of the security purchase/sale transaction is done with cash on a net-basis. Non-hedging derivatives The Company enters into interest rate lock commitments (“IRLCs”), or commitments to lend, for residential mortgage loans, which commit the Company to lend funds to a potential borrower at a specific interest rate and within a specified period of time. IRLCs that relate to the origination of mortgage loans that will be held for sale are considered derivative financial instruments under applicable accounting guidance. Outstanding IRLCs expose the Company to the risk that the price of the mortgage loans underlying the commitments may decline due to increases in mortgage interest rates from inception of the rate lock to the funding of the loan. The IRLCs are free-standing derivatives which are carried at fair value with changes recorded in discontinued operations in the Company’s consolidated statements of income. Changes in the fair value of IRLCs subsequent to inception are based on changes in the fair value of the underlying loan resulting from the fulfillment of the commitment and changes in the probability that the loan will fund within the terms of the commitment, which is affected primarily by changes in interest rates and the passage of time. Commitments to lend are included in discontinued operations. See Note 2 - Discontinued Operations for more information on assets and liabilities classified as discontinued operations. Amounts included in the Consolidated Statements of Income related to economic hedges and non-hedging derivatives were as follows: Three Months Ended March 31, (In thousands) 2020 2019 Economic hedges Interest rate swap on industrial revenue bond: Unrealized (loss) recognized in other non-interest income $ (563 ) $ (121 ) Interest rate swaps on loans with commercial loan customers: Unrealized gain/(loss) recognized in other non-interest income 102,382 (21,988 ) (Unfavorable) change in credit valuation adjustment recognized in other non-interest income (2,538 ) (137 ) Offsetting interest rate swaps on loans with commercial loan customers: Unrealized (loss)/gain recognized in other non-interest income (102,382 ) 21,988 Risk participation agreements: Unrealized gain recognized in other non-interest income 266 125 Forward commitments: Unrealized (loss) recognized in discontinued operations (4,263 ) (518 ) Realized (loss) in discontinued operations (1,922 ) (1,715 ) Non-hedging derivatives Commitments to lend Unrealized gain recognized in discontinued operations $ 2,208 $ 2,391 Realized gain in discontinued operations 9,300 9,432 Assets and Liabilities Subject to Enforceable Master Netting Arrangements Interest Rate Swap Agreements (“Swap Agreements”) The Company enters into swap agreements to facilitate the risk management strategies for commercial banking customers. The Company mitigates this risk by entering into equal and offsetting swap agreements with highly rated third party financial institutions. The swap agreements are free-standing derivatives and are recorded at fair value in the Company’s consolidated statements of condition. The Company is party to master netting arrangements with its financial institution counterparties; however, the Company does not offset assets and liabilities under these arrangements for financial statement presentation purposes. The master netting arrangements provide for a single net settlement of all swap agreements, as well as collateral, in the event of default on, or termination of, any one contract. Collateral generally in the form of marketable securities is received or posted by the counterparty with net liability positions, respectively, in accordance with contract thresholds. The Company had net asset positions with its financial institution counterparties totaling $1.1 million and $0.6 million as of March 31, 2020 and December 31, 2019 , respectively. The Company had net asset positions with its commercial banking counterparties totaling $177.7 million and $76.4 million as of March 31, 2020 and December 31, 2019 , respectively. The Company had net liability positions with its financial institution counterparties totaling $75.6 million and $78.8 million as of March 31, 2020 and December 31, 2019 , respectively. The Company had no net liability positions with its commercial banking counterparties as of March 31, 2020 . The Company had net liability positions with its commercial banking counterparties totaling $1.1 million as of December 31, 2019 . The Company has collateral pledged to cover this liability. The following table presents the assets and liabilities subject to an enforceable master netting arrangement as of March 31, 2020 and December 31, 2019 : Offsetting of Financial Assets and Derivative Assets Gross Amounts of Gross Amounts Offset in the Net Amounts of Assets Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (In thousands) Assets Condition Condition Instruments Collateral Received Net Amount March 31, 2020 Interest Rate Swap Agreements: Institutional counterparties $ 1,209 $ (100 ) $ 1,109 $ — $ — $ 1,109 Commercial counterparties 177,708 — 177,708 — — 177,708 Total $ 178,917 $ (100 ) $ 178,817 $ — $ — $ 178,817 Offsetting of Financial Liabilities and Derivative Liabilities Gross Amounts of Gross Amounts Offset in the Net Amounts of Liabilities Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (In thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount March 31, 2020 Interest Rate Swap Agreements: Institutional counterparties $ (75,621 ) $ — $ (75,621 ) $ 35,488 $ 72,411 $ 32,278 Commercial counterparties — — — — — — Total $ (75,621 ) $ — $ (75,621 ) $ 35,488 $ 72,411 $ 32,278 Offsetting of Financial Assets and Derivative Assets Gross Amounts of Gross Amounts Offset in the Net Amounts of Assets Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (In thousands) Assets Condition Condition Instruments Collateral Received Net Amount December 31, 2019 Interest Rate Swap Agreements: Institutional counterparties $ 640 $ (54 ) $ 586 $ — $ — $ 586 Commercial counterparties 76,428 (22 ) 76,406 — — 76,406 Total $ 77,068 $ (76 ) $ 76,992 $ — $ — $ 76,992 Offsetting of Financial Liabilities and Derivative Liabilities Gross Amounts of Gross Amounts Offset in the Net Amounts of Liabilities Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (In thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount December 31, 2019 Interest Rate Swap Agreements: Institutional counterparties $ (80,024 ) $ 1,219 $ (78,805 ) $ 25,828 $ 96,310 $ 43,333 Commercial counterparties (1,080 ) — (1,080 ) — — (1,080 ) Total $ (81,104 ) $ 1,219 $ (79,885 ) $ 25,828 $ 96,310 $ 42,253

LEASES

LEASES	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
LEASES	LEASES Substantially all of the leases in which the Company is the lessee are comprised of real estate property for branches, ATM locations, and office space. Most of the Company’s leases are classified as operating leases. At March 31, 2020 lease expiration dates ranged from 1 month to 20 years . The following table represents the Consolidated Balance Sheets classification of the Company’s right-of-use (“ROU”) assets and lease liabilities: (In thousands) March 31, 2020 December 31, 2019 Lease Right-of-Use Assets Classification Operating lease right-of-use assets (1) Other assets $ 73,356 $ 76,332 Finance lease right-of-use assets Premises and equipment, net 7,589 7,720 Total Lease Right-of-Use Assets $ 80,945 $ 84,052 Lease Liabilities Operating lease liabilities (2) Other liabilities $ 77,720 $ 80,734 Finance lease liabilities Other liabilities 10,760 10,883 Total Lease Liabilities $ 88,480 $ 91,617 (1) Includes operating lease right-of-use assets classified as discontinued operations of $2.7 million and $3.5 million as of March 31, 2020 and December 31, 2019, respectively. (2) Includes operating lease liabilities classified as discontinued operations of $2.8 million and $3.5 million as of March 31, 2020 and December 31, 2019, respectively. Supplemental information related to leases was as follows: March 31, 2020 December 31, 2019 Weighted-Average Remaining Lease Term (in years) Operating leases 10.1 10.3 Finance leases 14.6 14.8 Weighted-Average Discount Rate Operating leases 3.35 % 3.36 % Finance leases 5.00 % 5.00 % The Company has lease agreements with lease and non-lease components, which are generally accounted for separately. For real estate leases, non-lease components and other non-components, such as common area maintenance charges, real estate taxes, and insurance are not included in the measurement of the lease liability since they are generally able to be segregated. The Company does not have any material sub-lease agreements. Lease expense for operating leases for the three months ended March 31, 2020 was $3.5 million , of which $0.5 million was related to FCLS and is reported as discontinued operations. Lease expense for operating leases for the three months ended March 31, 2019 was $3.4 million , of which $0.7 million was related to FCLS and is reported as discontinued operations. Variable lease components, such as consumer price index adjustments, are expensed as incurred and not included in ROU assets and operating lease liabilities. Supplemental cash flow information related to leases was as follows: Three Months Ended (In thousands) March 31, 2020 March 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases (1) $ 3,628 $ 3,498 Operating cash flows from finance leases 134 159 Financing cash flows from finance leases 124 98 (1) Includes operating cash flows from operating leases related to discontinued operations of $0.5 million and $0.7 million at March 31, 2020 and March 31, 2019, respectively. The following table presents a maturity analysis of the Company’s lease liability by lease classification at March 31, 2020: (In thousands) Operating Leases Finance Leases 2020 $ 9,923 $ 765 2021 12,427 1,031 2022 11,370 1,031 2023 9,354 1,037 2024 7,909 1,037 Thereafter 40,984 10,260 Total undiscounted lease payments (1) 91,967 15,161 Less amounts representing interest (1) (14,247 ) (4,401 ) Lease liability (1) $ 77,720 $ 10,760 (1) Includes $2.8 million
LEASES	LEASES Substantially all of the leases in which the Company is the lessee are comprised of real estate property for branches, ATM locations, and office space. Most of the Company’s leases are classified as operating leases. At March 31, 2020 lease expiration dates ranged from 1 month to 20 years . The following table represents the Consolidated Balance Sheets classification of the Company’s right-of-use (“ROU”) assets and lease liabilities: (In thousands) March 31, 2020 December 31, 2019 Lease Right-of-Use Assets Classification Operating lease right-of-use assets (1) Other assets $ 73,356 $ 76,332 Finance lease right-of-use assets Premises and equipment, net 7,589 7,720 Total Lease Right-of-Use Assets $ 80,945 $ 84,052 Lease Liabilities Operating lease liabilities (2) Other liabilities $ 77,720 $ 80,734 Finance lease liabilities Other liabilities 10,760 10,883 Total Lease Liabilities $ 88,480 $ 91,617 (1) Includes operating lease right-of-use assets classified as discontinued operations of $2.7 million and $3.5 million as of March 31, 2020 and December 31, 2019, respectively. (2) Includes operating lease liabilities classified as discontinued operations of $2.8 million and $3.5 million as of March 31, 2020 and December 31, 2019, respectively. Supplemental information related to leases was as follows: March 31, 2020 December 31, 2019 Weighted-Average Remaining Lease Term (in years) Operating leases 10.1 10.3 Finance leases 14.6 14.8 Weighted-Average Discount Rate Operating leases 3.35 % 3.36 % Finance leases 5.00 % 5.00 % The Company has lease agreements with lease and non-lease components, which are generally accounted for separately. For real estate leases, non-lease components and other non-components, such as common area maintenance charges, real estate taxes, and insurance are not included in the measurement of the lease liability since they are generally able to be segregated. The Company does not have any material sub-lease agreements. Lease expense for operating leases for the three months ended March 31, 2020 was $3.5 million , of which $0.5 million was related to FCLS and is reported as discontinued operations. Lease expense for operating leases for the three months ended March 31, 2019 was $3.4 million , of which $0.7 million was related to FCLS and is reported as discontinued operations. Variable lease components, such as consumer price index adjustments, are expensed as incurred and not included in ROU assets and operating lease liabilities. Supplemental cash flow information related to leases was as follows: Three Months Ended (In thousands) March 31, 2020 March 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases (1) $ 3,628 $ 3,498 Operating cash flows from finance leases 134 159 Financing cash flows from finance leases 124 98 (1) Includes operating cash flows from operating leases related to discontinued operations of $0.5 million and $0.7 million at March 31, 2020 and March 31, 2019, respectively. The following table presents a maturity analysis of the Company’s lease liability by lease classification at March 31, 2020: (In thousands) Operating Leases Finance Leases 2020 $ 9,923 $ 765 2021 12,427 1,031 2022 11,370 1,031 2023 9,354 1,037 2024 7,909 1,037 Thereafter 40,984 10,260 Total undiscounted lease payments (1) 91,967 15,161 Less amounts representing interest (1) (14,247 ) (4,401 ) Lease liability (1) $ 77,720 $ 10,760 (1) Includes $2.8 million

OTHER COMMITMENTS, CONTINGENCIE

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Other Commitments, Contingencies, And Off-Balance Sheet Activities	OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES In December 2019, a novel strain of coronavirus (“COVID-19”) was reported to have surfaced in China and has since spread to a number of other countries, including the United States. In March 2020, the World Health Organization declared COVID-19 a global pandemic and the United States declared a National Public Health Emergency. The impact of the COVID-19 pandemic is fluid and continues to evolve, which is adversely affecting some of the Company’s clients. The COVID-19 pandemic and its associated impacts on trade (including supply chains and export levels), travel, employee productivity, unemployment, consumer spending, and other economic activities has resulted in less economic activity, lower equity market valuations and significant volatility and disruption in financial markets and has had an adverse effect on the Company’s business, financial condition and results of operations. The ultimate extent of the impact of the COVID-19 pandemic on the Company’s business, financial condition and results of operations is currently uncertain and will depend on various developments and other factors, including, among others, the duration and scope of the pandemic, as well as governmental, regulatory and private sector responses to the pandemic, and the associated impacts on the economy, financial markets and our clients, employees and vendors. The Company’s business, financial condition and results of operations generally rely upon the ability of the Company’s borrowers to repay their loans, the value of collateral underlying the Company’s secured loans, and demand for loans and other products and services the Company offers, which are highly dependent on the business environment in the Company’s primary markets where it operates and in the United States as a whole. During the first quarter of 2020, the Company’s results of operations were negatively impacted by an increase in its provision for credit losses and related allowance for credit losses, decline in the fair value of its equity portfolio, and a decline in valuation of assets accounted for pursuant to the fair value option. At this time, it is difficult to quantify the impact COVID-19 will have on the Company during the remainder of 2020. These circumstances could cause the Company to experience a material adverse effect on our business operations, asset valuations, financial condition, and results of operations. Material adverse impacts may include all or a combination of valuation impairments on the Company’s goodwill and intangible assets, investments, loans, loan servicing rights, deferred tax assets, lease right-of-use assets, or counter-party risk derivatives. Beginning in March 2020, the Company offered three-month payment deferrals for customers with a current payment status who were negatively impacted by economic disruption caused by the COVID-19 pandemic. The Company continues to accrue interest on these loans during the deferral period. In accordance with interagency guidance issued in March 2020, these short-term deferrals are not considered troubled debt restructurings (“TDRs”) unless the borrower was previously experiencing financial difficulty. In addition, the risk-rating on COVID-19 modified loans did not change, and these loans will not be considered past due until after the deferral period is over and scheduled payments resume. The credit quality of these loans will be reevaluated after the deferral period ends. Refer to Note 1 - Basis of Presentation for additional information regarding the Company's accounting policy regarding these modifications.

CAPITAL RATIOS AND SHAREHOLDERS

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY	3 Months Ended
	Mar. 31, 2020
Stockholders' Equity Note [Abstract]
CAPITAL RATIOS AND SHAREHOLDERS' EQUITY	CAPITAL RATIOS AND SHAREHOLDERS’ EQUITY The actual and required capital ratios were as follows: March 31, Regulatory December 31, Regulatory Company (consolidated) Total capital to risk weighted assets 13.8 % N/A 13.7 % N/A Common equity tier 1 capital to risk weighted assets 11.9 N/A 12.1 N/A Tier 1 capital to risk weighted assets 12.1 N/A 12.3 N/A Tier 1 capital to average assets 9.3 N/A 9.3 N/A Bank Total capital to risk weighted assets 12.5 % 10.0 % 12.8 % 10.0 % Common equity tier 1 capital to risk weighted assets 11.7 6.5 12.2 6.5 Tier 1 capital to risk weighted assets 11.7 8.0 12.2 8.0 Tier 1 capital to average assets 8.9 5.0 9.1 5.0 At each date shown, the Bank met the conditions to be classified as “well capitalized” under the relevant regulatory framework. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the table above. Effective January 1, 2015, the Company and the Bank became subject to the Basel III rule that requires the Company and the Bank to assess their Common equity Tier 1 capital to risk weighted assets. The Bank's Common equity Tier 1 capital to risk weighted assets exceeds the minimum to be well capitalized. In addition, the final capital rules added a requirement to maintain a minimum conservation buffer, composed of Common equity Tier 1 capital, of 2.5% of risk-weighted assets, to be phased in over three years and applied to the Common equity Tier 1 risk-based capital ratio, the Tier 1 risk-based capital ratio, and the Total risk-based capital ratio. As of January 1, 2019, banking organizations must maintain a minimum Common equity Tier 1 risk-based capital ratio of 7.0% , a minimum Tier 1 risk-based capital ratio of 8.5% , and a minimum Total risk-based capital ratio of 10.5% . The final capital rules impose restrictions on capital distributions and certain discretionary cash bonus payments if the minimum capital conservation buffer is not met. At March 31, 2020 , the capital levels of both the Company and the Bank exceeded all regulatory capital requirements and the Bank's regulatory capital ratios were above the minimum levels required to be considered well capitalized for regulatory purposes. The capital levels of both the Company and the Bank at March 31, 2020 also exceeded the minimum capital requirements including the currently applicable capital conservation buffer of 2.5% . Accumulated other comprehensive income Components of accumulated other comprehensive income is as follows: (In thousands) March 31, December 31, Other accumulated comprehensive income, before tax: Net unrealized holding gain on AFS securities $ 44,877 $ 19,263 Net unrealized holding (loss) on pension plans (3,023 ) (3,023 ) Income taxes related to items of accumulated other comprehensive income: Net unrealized tax (expense) on AFS securities (11,649 ) (5,059 ) Net unrealized tax benefit on pension plans 812 812 Accumulated other comprehensive income $ 31,017 $ 11,993 The following table presents the components of other comprehensive income for the three months ended March 31, 2020 and 2019 : (In thousands) Before Tax Tax Effect Net of Tax Three Months Ended March 31 , 2020 Net unrealized holding gain on AFS securities: x Net unrealized gains arising during the period $ 25,613 $ (6,590 ) $ 19,023 Less: reclassification adjustment for (losses) realized in net income (1 ) — (1 ) Net unrealized holding gain on AFS securities 25,614 (6,590 ) 19,024 Other comprehensive income $ 25,614 $ (6,590 ) $ 19,024 Three Months Ended March 31 , 2019 Net unrealized holding gain on AFS securities: Net unrealized gains arising during the period $ 14,221 $ (3,653 ) $ 10,568 Less: reclassification adjustment for gains realized in net income 6 (2 ) 4 Net unrealized holding gain on AFS securities 14,215 (3,651 ) 10,564 Other comprehensive income $ 14,215 $ (3,651 ) $ 10,564 The following table presents the changes in each component of accumulated other comprehensive income, for the three ended March 31, 2020 and 2019 : (In thousands) Net unrealized holding loss on AFS Securities Net unrealized holding loss on pension plans Total Three Months Ended March 31, 2020 Balance at Beginning of Period $ 14,204 $ (2,211 ) $ 11,993 Other comprehensive income before reclassifications 19,023 — 19,023 Less: amounts reclassified from accumulated other comprehensive income (loss) (1 ) — (1 ) Total other comprehensive income 19,024 — 19,024 Balance at End of Period $ 33,228 $ (2,211 ) $ 31,017 Three Months Ended March 31, 2019 Balance at Beginning of Period $ (11,453 ) $ (2,017 ) $ (13,470 ) Other comprehensive (loss) before reclassifications 10,568 — 10,568 Less: amounts reclassified from accumulated other comprehensive income (loss) 4 — 4 Total other comprehensive (loss) 10,564 — 10,564 Balance at End of Period $ (889 ) $ (2,017 ) $ (2,906 ) The following table presents the amounts reclassified out of each component of accumulated other comprehensive income for the three ended March 31, 2020 and 2019 : Affected Line Item in the Three Months Ended March 31, Statement where Net Income (In thousands) 2020 2019 is Presented Realized gains on AFS securities: $ (1 ) $ 6 Non-interest income — (2 ) Tax expense (1 ) 4 Net of tax Total reclassifications for the period $ (1 ) $ 4 Net of tax

EARNINGS PER SHARE

EARNINGS PER SHARE	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE Earnings per share have been computed based on the following (average diluted shares outstanding are calculated using the treasury stock method): Three Months Ended March 31, (In thousands, except per share data) 2020 2019 Income from continuing operations $ (12,072 ) $ 24,272 Income from discontinued operations (7,798 ) (637 ) Net income $ (19,870 ) $ 23,635 Average number of common shares issued 51,903 46,212 Less: average number of treasury shares 1,744 717 Less: average number of unvested stock award shares 488 425 Plus: average participating preferred shares 533 1,043 Average number of basic shares outstanding 50,204 46,113 Plus: dilutive effect of unvested stock award shares — 135 Plus: dilutive effect of stock options outstanding — 13 Average number of diluted shares outstanding 50,204 46,261 Basic earnings per common share: Continuing operations $ (0.24 ) $ 0.52 Discontinued operations (0.16 ) (0.01 ) Total $ (0.40 ) $ 0.51 Diluted earnings per common share: Continuing operations $ (0.24 ) $ 0.52 Discontinued operations (0.16 ) (0.01 ) Total $ (0.40 ) $ 0.51 Due to the net loss for the three month period ended March 31, 2020 , all unvested restricted stock and options were considered anti-dilutive for the three months ended March 31, 2020 . For the three months ended March 31, 2019 , 291 thousand shares of restricted stock and 13 thousand options were anti-dilutive and therefore excluded from the earnings per share calculations.

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
STOCK-BASED COMPENSATION PLANS	STOCK-BASED COMPENSATION PLANS A combined summary of activity in the Company’s stock award and stock option plans for the three months ended March 31, 2020 is presented in the following table: Non-Vested Stock Awards Outstanding Stock Options Outstanding (Shares in thousands) Number of Shares Weighted-Average Grant Date Fair Value Number of Shares Weighted-Average Exercise Price December 31, 2019 450 $ 32.47 153 $ 22.00 Granted 108 29.09 — — Acquired — — — — Stock options exercised — — (24 ) 21.48 Stock awards vested (53 ) 33.40 — — Forfeited (11 ) 34.14 — — Expired — — — — March 31, 2020 494 $ 31.42 129 $ 22.09 Exercisable options at March 31, 2020 129 $ 22.09 During the three months ended March 31, 2020, proceeds from stock option exercises totaled $519 thousand . There were no options exercised during the three months ended March 31, 2019. During the three months ended March 31, 2020 and March 31, 2019, there were 53 thousand and 65 thousand shares vested in connection with stock awards, respectively. All of these shares were issued from available treasury stock. Stock-based compensation expense totaled $1.5 million and $1.0 million during the three months ended March 31, 2020 and 2019 , respectively. Stock-based compensation expense is recognized over the requisite service period for all awards.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS A description of the valuation methodologies used for assets and liabilities measured at fair value, as well as the general classification of such instruments pursuant to the valuation hierarchy, is set forth below. These valuation methodologies were applied to all of the Company’s financial assets and financial liabilities that are carried at fair value, including assets classified as discontinued operations on the consolidated balance sheets. See Note 2 - Discontinued Operations for more information on assets and liabilities classified as discontinued operations. Recurring Fair Value Measurements The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value. March 31, 2020 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading security $ — $ — $ 9,829 $ 9,829 Securities available for sale: Municipal bonds and obligations — 114,071 — 114,071 Agency collateralized mortgage obligations — 801,184 — 801,184 Agency residential mortgage-backed securities — 143,328 — 143,328 Agency commercial mortgage-backed securities — 194,721 — 194,721 Corporate bonds — 59,785 34,504 94,289 Trust preferred securities — 5,492 — 5,492 Other bonds and obligations — 50,773 — 50,773 Marketable equity securities 31,612 671 — 32,283 Loans held for investment at fair value — — 4,895 4,895 Loans held for sale (1) — 129,975 — 129,975 Derivative assets (1) — 177,708 4,836 182,544 Capitalized servicing rights (1) — — 8,518 8,518 Derivative liabilities (1) 4,490 74,511 — 79,001 (1) Includes assets and liabilities classified as discontinued operations. December 31, 2019 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading security $ — $ — $ 10,769 $ 10,769 Securities available for sale: Municipal bonds and obligations — 110,138 — 110,138 Agency collateralized mortgage obligations — 748,812 — 748,812 Agency residential mortgage-backed securities — 147,744 — 147,744 Agency commercial mortgage-backed securities — 147,096 — 147,096 Corporate bonds — 73,610 42,966 116,576 Other bonds and obligations — 41,189 — 41,189 Marketable equity securities 40,499 1,057 — 41,556 Loans held for investment at fair value — — — — Loans held for sale (1) — 140,280 — 140,280 Derivative assets (1) — 77,562 2,628 80,190 Capitalized servicing rights (1) — — 12,229 12,229 Derivative liabilities (1) 227 80,454 — 80,681 (1) Includes assets and liabilities classified as discontinued operations. There were no transfers between levels during the three months ended March 31, 2020 . Trading Security at Fair Value. The Company holds one security designated as a trading security. It is a tax-advantaged economic development bond issued to the Company by a local nonprofit which provides wellness and health programs. The fair value of this security is determined based on a discounted cash flow methodology. Certain inputs to the fair value calculation are unobservable and there is little to no market activity in the security; therefore, the security meets the definition of a Level 3 security. The discount rate used in the valuation of the security is sensitive to movements in the 3-month LIBOR rate. Securities Available for Sale and Marketable Equity Securities . Marketable equity securities classified as Level 1 consist of publicly-traded equity securities for which the fair values can be obtained through quoted market prices in active exchange markets. Marketable equity securities classified as Level 2 consist of securities with infrequent trades in active exchange markets, and pricing is primarily sourced from third party pricing services. AFS securities classified as Level 2 include most of the Company’s debt securities. The pricing on Level 2 and Level 3 was primarily sourced from third party pricing services, overseen by management, and is based on models that consider standard input factors such as dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and condition, among other things. Level 3 pricing includes inputs unobservable to market participants. Loans Held for Investment. The Company’s held for investment loan portfolio includes loans originated by Company and loans acquired through business combinations. The Company intends to hold these assets until maturity as a part of its business operations. For one acquired portfolio subset, the Company previously accounted for these purchased-credit impaired loans as a pool under ASC 310, as they were determined to have common risk characteristics. These loans were recorded at fair value on acquisition date and subsequently evaluated for impairment collectively. Upon adoption of ASC 326, the Company elected the fair value option on this portfolio, recognizing a $11.2 million fair value write-down charged to Retained Earnings, net of deferred tax impact, as of January 1, 2020. The fair value of this loan portfolio is determined based on a discounted cash flow methodology. Certain inputs to the fair value calculation are unobservable; therefore, the loans meet the definition of Level 3 assets. The discount rate used in the valuation is consistent with assets that have significant credit deterioration. The cash flow assumptions include payment schedules for loans with current payment histories and estimated collateral value for delinquent loans. All of these loans were nonperforming as of March 31, 2020. Aggregate Fair Value March 31, 2020 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 4,895 $ 71,740 $ (66,845 ) Loans Held for Sale. The Company elected the fair value option for all loans held for sale (HFS) originated for sale on or after May 1, 2012. Loans HFS are classified as Level 2 as the fair value is based on input factors such as quoted prices for similar loans in active markets. Aggregate Fair Value March 31, 2020 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale - continuing operations $ 4,252 $ 4,161 $ 91 Loans held for sale - discontinued operations 125,723 122,163 3,560 Total loans held for sale $ 129,975 $ 126,324 $ 3,651 Aggregate Fair Value December 31, 2019 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale - continuing operations $ 7,625 $ 7,485 $ 140 Loans held for sale - discontinued operations 132,655 129,622 3,033 Total loans held for sale $ 140,280 $ 137,107 $ 3,173 The changes in fair value of loans held for sale for the three months ended March 31, 2020 , were losses of $49 thousand from continuing operations and gains of $0.5 million from discontinued operations. The changes in fair value of loans held for sale for the three months ended March 31, 2019 were gains of $60 thousand from continuing operations and $1.2 million from discontinued operations. During the three months ended March 31, 2020, originations of loans held for sale from continuing operations totaled $16.6 million and sales of loans originated for sale from continuing operations totaled $21.1 million . During the three months ended March 31, 2019, originations of loans held for sale from continuing operations totaled $11.5 million and sales of loans originated for sale from continuing operations totaled $9.0 million . Interest Rate Swaps. The valuation of the Company’s interest rate swaps is obtained from a third-party pricing service and is determined using a discounted cash flow analysis on the expected cash flows of each derivative. The pricing analysis is based on observable inputs for the contractual terms of the derivatives, including the period to maturity and interest rate curves. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings. Although the Company has determined that the majority of the inputs used to value its interest rate derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of March 31, 2020 , the Company assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company determined that its derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy. Commitments to Lend. The Company enters into commitments to lend for residential mortgage loans intended for sale, which commit the Company to lend funds to a potential borrower at a specific interest rate and within a specified period of time. The estimated fair value of commitments to originate residential mortgage loans for sale is based on quoted prices for similar loans in active markets. However, this value is adjusted by a factor which considers the likelihood that the loan in a lock position will ultimately close, and by the non-refundable costs of originating the loan. The closing ratio is derived from the Bank’s internal data and is adjusted using significant management judgment. The costs to originate are primarily based on the Company’s internal commission rates that are not observable. As such, these commitments are classified as Level 3 measurements. Commitments to lend are included in discontinued operations. See Note 2 - Discontinued Operations for more information on assets and liabilities classified as discontinued operations. Forward Sale Commitments . The Company utilizes forward sale commitments as economic hedges against potential changes in the values of the commitments to lend and loans originated for sale. To Be Announced (“TBA”) mortgage-backed securities forward commitment sales are used as the hedging instrument, are classified as Level 1, and consist of publicly-traded debt securities for which identical fair values can be obtained through quoted market prices in active exchange markets. The fair values of the Company’s best efforts and mandatory delivery loan sale commitments are determined similarly to the commitments to lend using quoted prices in the market place that are observable. However, costs to originate and closing ratios included in the calculation are internally generated and are based on management’s judgment and prior experience, which are considered factors that are not observable. As such, best efforts and mandatory forward commitments are classified as Level 3 measurements. Forward sale commitments are included in discontinued operations. See Note 2 - Discontinued Operations for more information on assets and liabilities classified as discontinued operations. Capitalized Servicing Rights. The Company accounts for certain capitalized servicing rights at fair value in its Consolidated Financial Statements, as the Company is permitted to elect the fair value option for each specific instrument. A loan servicing right asset represents the amount by which the present value of the estimated future net cash flows to be received from servicing loans exceed adequate compensation for performing the servicing. The fair value of servicing rights is estimated using a present value cash flow model. The most important assumptions used in the valuation model are the anticipated rate of the loan prepayments and discount rates. Although some assumptions in determining fair value are based on standards used by market participants, some are based on unobservable inputs and therefore are classified in Level 3 of the valuation hierarchy. Capitalized servicing rights held at fair value are included in discontinued operations on the consolidated balance sheet. See Note 2 - Discontinued Operations for more information on assets and liabilities classified as discontinued operations. The table below presents the changes in Level 3 assets and liabilities that were measured at fair value on a recurring basis for the three months ended March 31, 2020 and 2019 . Assets (Liabilities) Securities Loans Capitalized Trading Available Held for Commitments Servicing (In thousands) Security for Sale Investment to Lend (1) Rights (1) Three Months Ended March 31, 2020 December 31, 2019 $ 10,769 $ 42,966 $ — $ 2,628 $ 12,299 Adoption of ASC 326 — — 7,660 — — Maturity of AFS security — (9,000 ) — — — Unrealized (loss), net recognized in other non-interest income (759 ) — (2,216 ) — — Unrealized gain included in accumulated other comprehensive income — 538 — — — Unrealized gain/(loss), net recognized in discontinued operations — — — 11,039 (3,781 ) Paydown of asset (181 ) — (549 ) — — Transfers to held for sale loans — — — (8,831 ) — Additions to servicing rights — — — — — March 31, 2020 $ 9,829 $ 34,504 $ 4,895 $ 4,836 $ 8,518 Unrealized gains relating to instruments still held at March 31, 2020 $ 620 $ 151 $ — $ 4,836 $ — Securities Loans Capitalized Trading Available Held for Commitments Servicing (In thousands) Security for Sale Investment to Lend (1) Rights (1) Three Months Ended March 31, 2019 December 31, 2018 $ 11,212 $ — $ — $ 3,927 $ 11,485 Unrealized gain, net recognized in other non-interest income 126 — — — — Unrealized gain/(loss), net recognized in discontinued operations — — — 11,221 (1,142 ) Paydown of trading security (174 ) — — — — Transfers to held for sale loans — — — (8,830 ) — Additions to servicing rights — — — — 1,008 March 31, 2019 $ 11,164 $ — $ — $ 6,318 $ 11,351 Unrealized gains relating to instruments still held at March 31, 2019 $ 1,248 $ — $ — $ 6,318 $ — (1) Classified as assets from discontinued operations on the consolidated balance sheets. Quantitative information about the significant unobservable inputs within Level 3 recurring assets and liabilities is as follows: Fair Value Significant Unobservable Input (In thousands) March 31, 2020 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading security $ 9,829 Discounted Cash Flow Discount Rate 1.02 % AFS Securities 34,504 Indication from Market Maker Price 94.00 - 96.00% Loan held for investment 4,895 Discounted Cash Flow Discount Rate 30.00 % Collateral Value $7.9 - $31.1 Commitments to lend (1) 4,836 Historical Trend Closing Ratio 80.22 % Pricing Model Origination Costs, per loan $ 3,137 Capitalized servicing rights (1) 8,518 Discounted cash flow Constant Prepayment Rate (CPR) 23.99 % Discount Rate 10.21 % Total $ 62,582 (1) Classified as assets from discontinued operations on the consolidated balance sheets. Fair Value Significant Unobservable Input (In thousands) December 31, 2019 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading security $ 10,769 Discounted Cash Flow Discount Rate 2.21 % AFS Securities 42,966 Indication from Market Maker Price 97.00 - 100.00 Commitments to lend (1) 2,628 Historical Trend Closing Ratio 77.81 % Pricing Model Origination Costs, per loan $ 3,137 Capitalized servicing rights (1) 12,299 Discounted Cash Flow Constant Prepayment Rate (CPR) 11.50 % Discount Rate 10.00 % Total $ 68,662 (1) Classified as assets from discontinued operations on the consolidated balance sheets. Non-Recurring Fair Value Measurements The Company is required, on a non-recurring basis, to adjust the carrying value or provide valuation allowances for certain assets using fair value measurements in accordance with GAAP. The following is a summary of applicable non-recurring fair value measurements. There are no liabilities measured at fair value on a non-recurring basis. March 31, 2020 December 31, 2019 Fair Value Measurement Date as of March 31, 2020 Level 3 Level 3 Level 3 (In thousands) Inputs Inputs Inputs Assets Individually evaluated loans $ 15,586 $ 8,831 March 2020 Capitalized servicing rights 13,720 14,152 March 2020 Other real estate owned 224 — March 2020 Total $ 29,530 $ 22,983 Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets is as follows: Fair Value (In thousands) March 31, 2020 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Individually evaluated loans $ 15,586 Fair Value of Collateral Discounted Cash Flow - Loss Severity 14.41% to 23.83% (3.34%) Appraised Value $6.2 to $1,347 ($658) Capitalized servicing rights 13,720 Discounted Cash Flow Constant Prepayment Rate (CPR) 10.20% to 14.84% (13.96%) Discount Rate 10.00% to 12.30% (11.37%) Other Real Estate Owned 224 Fair Value of Collateral Appraised Value $40 to $120 ($90) Total $ 29,530 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties. Fair Value (In thousands) December 31, 2019 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Impaired Loans $ 8,831 Fair Value of Collateral Discounted Cash Flow - loss severity 15.72% to 0.12% (4.50%) Appraised Value $8.2 to $1,548 ($736.1) Capitalized servicing rights 14,152 Discounted Cash Flow Constant Prepayment Rate (CPR) 9.44% to 14.12% (12.25%) Discount Rate 10.00% to 13.50% (11.78%) Other Real Estate Owned — Fair Value of Collateral Appraised Value — Total $ 22,983 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties. There were no Level 1 or Level 2 nonrecurring fair value measurements for the periods ended March 31, 2020 and December 31, 2019 . Individually evaluated loans. Loans are generally not recorded at fair value on a recurring basis. Periodically, the Company records non-recurring adjustments to the carrying value of loans based on fair value measurements for partial charge-offs of the uncollectible portions of those loans. Non-recurring adjustments can also include certain impairment amounts for collateral-dependent loans calculated when establishing the allowance for credit losses. Such amounts are generally based on the fair value of the underlying collateral supporting the loan and, as a result, the carrying value of the loan less the calculated valuation amount does not necessarily represent the fair value of the loan. Real estate collateral is typically valued using appraisals or other indications of value based on recent comparable sales of similar properties or assumptions generally observable in the marketplace. However, the choice of observable data is subject to significant judgment, and there are often adjustments based on judgment in order to make observable data comparable and to consider the impact of time, the condition of properties, interest rates, and other market factors on current values. Additionally, commercial real estate appraisals frequently involve discounting of projected cash flows, which relies inherently on unobservable data. Therefore, nonrecurring fair value measurement adjustments that relate to real estate collateral have generally been classified as Level 3. Estimates of fair value for other collateral that supports commercial loans are generally based on assumptions not observable in the marketplace and therefore such valuations have been classified as Level 3. Capitalized loan servicing rights . A loan servicing right asset represents the amount by which the present value of the estimated future net cash flows to be received from servicing loans exceed adequate compensation for performing the servicing. The fair value of servicing rights is estimated using a present value cash flow model. The most important assumptions used in the valuation model are the anticipated rate of the loan prepayments and discount rates. Adjustments are only recorded when the discounted cash flows derived from the valuation model are less than the carrying value of the asset. Although some assumptions in determining fair value are based on standards used by market participants, some are based on unobservable inputs and therefore are classified in Level 3 of the valuation hierarchy. Summary of Estimated Fair Values of Financial Instruments The following tables summarize the estimated fair values (represents exit price), and related carrying amounts, of the Company’s financial instruments. Certain financial instruments and all non-financial instruments are excluded. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company. Certain assets and liabilities in the following disclosures include balances classified as discontinued operations. See Note 2 - Discontinued Operations for more information on these assets and liabilities. March 31, 2020 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 605,420 $ 605,420 $ 605,420 $ — $ — Trading security 9,829 9,829 — — 9,829 Marketable equity securities 32,283 32,283 31,612 671 — Securities available for sale 1,403,858 1,403,858 — 1,369,354 34,504 Securities held to maturity 336,802 358,416 — 354,657 3,759 FHLB bank stock and restricted securities 54,306 N/A N/A N/A N/A Net loans 9,189,667 9,469,947 — — 9,469,947 Loans held for sale (1) 129,975 129,975 — 129,975 — Accrued interest receivable 35,427 35,427 — 35,427 — Derivative assets (1) 182,544 182,544 — 177,708 4,836 Financial Liabilities Total deposits $ 10,071,675 $ 10,080,250 $ — $ 10,080,250 $ — Short-term debt 225,000 225,866 — 225,866 — Long-term Federal Home Loan Bank advances 719,053 727,150 — 727,150 — Subordinated borrowings 97,107 89,521 — 89,521 — Derivative liabilities (1) 79,001 79,001 4,490 74,511 — (1) Includes assets and liabilities classified as discontinued operations. December 31, 2019 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 579,829 $ 579,829 $ 579,829 $ — $ — Trading security 10,769 10,769 — — 10,769 Marketable equity securities 41,556 41,555 40,499 1,056 — Securities available for sale and other 1,311,555 1,311,555 — 1,267,573 43,982 Securities held to maturity 357,979 373,277 — 355,513 17,764 FHLB bank stock and restricted securities 48,019 N/A N/A N/A N/A Net loans 9,438,853 9,653,550 — — 9,653,550 Loans held for sale (1) 169,319 169,319 — 140,280 29,039 Accrued interest receivable 36,462 36,462 — 36,462 — Derivative assets (1) 80,190 80,190 — 77,562 2,628 Financial Liabilities Total deposits $ 10,335,977 $ 10,338,993 $ — $ 10,338,993 $ — Short-term debt 125,000 125,081 — 125,081 — Long-term Federal Home Loan Bank advances 605,501 606,381 — 606,381 — Subordinated borrowings 97,049 101,055 — 101,055 — Derivative liabilities (1) 80,681 80,681 227 80,454 — (1) Includes assets and liabilities classified as discontinued operations.

NET INTEREST INCOME AFTER PROVI

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	3 Months Ended
	Mar. 31, 2020
Banking and Thrift, Interest [Abstract]
NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES	NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES Presented below is net interest income after provision for credit losses for the three months ended March 31, 2020 and 2019, respectively. Three Months Ended March 31, (In thousands) 2020 2019 Net interest income from continuing operations $ 86,428 $ 85,459 Provision for credit losses 34,807 4,001 Net interest income from continuing operations after provision for credit losses $ 51,621 $ 81,458

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The Consolidated Financial Statements (the “financial statements”) of Berkshire Hills Bancorp, Inc. and its subsidiaries (the “Company” or “Berkshire”) have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”). The Company is a Delaware corporation, headquartered in Boston, Massachusetts, and the holding company for Berkshire Bank (the “Bank”), a Massachusetts-chartered trust company headquartered in Pittsfield, Massachusetts, and Berkshire Insurance Group, Inc. These financial statements include the accounts of the Company, its wholly-owned subsidiaries and the Bank’s consolidated subsidiaries. In consolidation, all significant intercompany accounts and transactions are eliminated. The results of operations of companies or assets acquired are included only from the dates of acquisition. All material wholly-owned and majority-owned subsidiaries are consolidated unless GAAP requires otherwise. The Company has evaluated subsequent events for potential recognition and/or disclosure through the date these financial statements were issued. These interim financial statements have been prepared in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X, and accordingly, certain information and footnote disclosures normally included in financial statements prepared according to GAAP have been omitted. The results for any interim period are not necessarily indicative of results for the full year. These consolidated financial statements should be read in conjunction with the audited financial statements and disclosures Berkshire Hills Bancorp, Inc. previously filed with the Securities and Exchange Commission in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019. In management’s opinion, all adjustments necessary for a fair statement are reflected in the interim periods presented.
Reclassification	Reclassifications Certain items in prior financial statements have been reclassified to conform to the current presentation.
Recently Adopted Accounting Principles and Future Application of Accounting Pronouncements	In June 2016, the FASB issued ASU No. 2016-13 “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments” and related subsequent amendments, which replaces the incurred loss methodology with an expected loss methodology that is referred to as the current expected credit loss (“CECL”) methodology. The measurement of expected losses under the CECL methodology is applicable to financial assets measured at amortized cost, as well as unfunded commitments that are considered off-balance sheet credit exposures at the reporting date. The measurement is based on historical experience, current conditions, and reasonable and supportable forecasts. Financial institutions and other organizations will now use forward-looking information to enhance their credit loss estimates. The update requires enhanced disclosures to help investors and other financial statement users better understand significant estimates and judgments used in estimating credit losses, as well as the credit quality and underwriting standards of an organization’s portfolio. In addition, the ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. For available for sale debt securities with unrealized losses, Topic 326 requires credit losses to be recognized as an allowance rather than a reduction in the amortized cost of the securities. As a result, improvements to estimated credit losses are recognized immediately in earnings rather than as interest income over time. The current expected credit loss measurement will be used to estimate the allowance for credit losses (“ACL”) over the life of the financial assets. The amendments in this update became effective for annual periods and interim periods within those annual periods beginning after December 15, 2019. As previously disclosed, the Company assembled a cross-functional working group that met regularly to oversee the implementation plan which included assessment and documentation of processes and internal controls, model development and documentation, assessing existing loan and loss data, assessing models for default and loss estimates, and conducting parallel runs and reviews through December 31, 2019. Under CECL the Company determines its allowance for credit losses on loans using pools of assets with similar risk characteristics. The Company evaluates its risk characteristics of loans based on regulatory call report code with sub-segmentation based on underlying collateral for certain loan types. Loans that no longer match the risk profile of the pool are individually assessed for credit losses. The Company’s lifetime credit loss models are based on historical data and incorporate forecasts of macroeconomic variables, expected prepayments and recoveries. Outside of the model, non-economic qualitative factors are applied to further refine the expected loss calculation for each portfolio. A seven quarter reasonable and supportable forecast period is currently used for all loan portfolios. When the risk characteristics of a loan no longer match the characteristics of the collective pool, the loan is removed from the pool and individually assessed for credit losses. Generally, non-accrual loans above a threshold deemed appropriate by management, TDRs, potential TDRs, and collateral dependent loans are individually assessed. The individual assessment for credit impairment is generally based on a discounted cash flow approach unless the asset is collateral dependent. A loan is considered collateral dependent when repayment is expected to be provided substantially through the operation or sale of the collateral and the borrower is experiencing financial difficulty. Collateral dependent loans are individually assessed and the expected credit loss is based on the fair value of the collateral. The fair value is reduced for estimated costs to sell if the value of the collateral is expected to be realized through sale. The Company has elected to present accrued interest receivable separately from the amortized cost basis on the balance sheet and is not estimating an allowance for credit loss on accrued interest. This election applies to loans as well as debt securities. The Company's non-accrual policies have not changed as a result of adopting CECL. The Company adopted CECL on January 1, 2020 using the modified retrospective method for all financial assets measured at amortized cost and off-balance-sheet credit exposures. Results for the reporting periods after January 1, 2020 are presented under Topic 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. On the adoption date, the Company increased the allowance for credit losses for loans by $25.4 million and increased the allowance for credit losses for unfunded loan commitments by $8.0 million (in other liabilities). The increase related to the Company's acquired loan portfolio totaled $15.3 million . Under the previously applicable accounting guidance, any remaining unamortized loan discount on an individual loan could be used to offset a charge-off for that loan, so the allowance for loan losses needed for the acquired loans was reduced by the remaining loan discounts. The new ASU removes the ability to offset a charge-off against the remaining loan discount and requires an allowance for credit losses to be recognized in addition to the loan discount. The impact of adopting the ASU, and at each subsequent reporting period, is highly dependent on credit quality, macroeconomic forecasts and conditions, composition of our loans and available-for-sale securities portfolio, along with other management judgments. The FASB provided transition relief, allowing entities to irrevocably elect, upon adoption of CECL, the fair value option (FVO) on financial instruments that were previously recorded at amortized cost and are within the scope of ASC 326-20 if the instruments are eligible for the FVO under ASC 825-10. It is applied through a cumulative-effect adjustment to retained earnings. The Company elected the FVO for the taxi medallion portfolio resulting in a $15.3 million reduction in loan valuation. As of January 1, 2020, the Company recorded a cumulative-effect adjustment of $24.4 million to decrease retained earnings, net of deferred tax balances of $9.0 million . The Company recorded an allowance for credit losses as of January 1, 2020 on its securities held to maturity of $0.3 million . The Company adopted CECL using the prospective transition approach for financial assets purchased with credit deterioration (“PCD”) that were previously classified as purchased credit impaired and accounted for under ASC 310-30. In accordance with the standard, Berkshire did not reassess whether PCI assets met the definition of PCD assets as of the date of adoption. On January 1, 2020, the amortized cost basis of the PCD assets were adjusted to reflect the addition of $15.3 million to the allowance for credit losses for loans which is net of $11.9 million adjustment for confirmed losses. The remaining noncredit discount in the amount of $3.2 million will be accreted into interest income at the effective interest rate as of January 1, 2020. The impact of the January 1, 2020, adoption entry is summarized in the table below: (in thousands) December 31, 2019 Pre-ASC 326 Adoption Impact of Adoption January 1, 2020 Post-ASC 326 Adoption Assets: Loans 9,502,428 — 9,502,428 PCD gross up — 15,326 15,326 Fair value option — (15,291 ) (15,291 ) Total loans 9,502,428 35 9,502,463 Allowance for credit losses on loans 63,575 25,434 89,009 Allowance for credit losses on securities — 309 309 Deferred tax assets, net 51,165 8,993 60,158 Liabilities and shareholders' equity: Other liabilities (ACL unfunded loan commitments) 100 7,993 8,093 Retained earnings 361,082 (24,380 ) 336,702 In December 2018, the OCC, the Board of Governors of the Federal Reserve System, and the FDIC approved a final rule to address changes to credit loss accounting under GAAP, including banking organizations’ implementation of CECL. The final rule provides banking organizations the option to phase in over a three-year period the day-one adverse effects on regulatory capital that may result from the adoption of the new accounting standard. In March 2020, the OCC, the Board of Governors of the Federal Reserve System, and the FDIC announced an interim final rule to delay the estimated impact on regulatory capital stemming from the implementation of CECL. The interim final rule maintains the three-year transition option in the previous rule and provides banks the option to delay for two years an estimate of CECL’s effect on regulatory capital, relative to the incurred loss methodology’s effect on regulatory capital, followed by a three-year transition period (five-year transition option). The Company is adopting the capital transition relief over the permissible five-year period. On March 27, 2020, the Coronavirus, Aid, Relief, and Economic Security (CARES) Act, which provides relief from certain requirements under GAAP, was signed into law. Section 4013 of the CARES Act gives entities temporary relief from the accounting and disclosure requirements for troubled debt restructurings (TDRs) under ASC 310-40 in certain situations. In addition, on April 7, 2020, certain regulatory banking agencies issued an interagency statement that offers practical expedients for evaluating whether loan modifications in response to the COVID-19 pandemic are TDRs. The interagency statement was originally issued on March 22, 2020, but was revised to address the relationship between their original TDR guidance and the guidance in Section 4013 of the CARES Act. To qualify for TDR accounting and disclosure relief under the CARES Act, the applicable loan must not have been more than 30 days past due as of December 31, 2019, and the modification must be executed during the period beginning on March 1, 2020, and ending on the earlier of December 31, 2020, or the date that is 60 days after the termination date of the national emergency declared by the president on March 13, 2020, under the National Emergencies Act related to the outbreak of COVID-19. The CARES Act applies to modifications made as a result of COVID-19, including forbearance agreements, interest rate modifications, repayment plans, and other arrangements to defer or delay payment of principal or interest. The interagency statement does not require the modification to be completed within a certain time period if it is related to COVID-19 and the loan was not more than 30 days past due as of the date of the Company’s implementation of its modification programs. Moreover, the interagency statement applies to short-term modifications including payment deferrals, fee waivers, extensions of repayment terms, or other insignificant payment delays as a result of COVID-19. The Company will apply Section 4013 of the CARES Act and the interagency statement in connection with applicable modifications. For modifications that qualify under either the CARES Act or the interagency statement, TDR accounting and reporting is suspended through the period of the modification; however, the Company will continue to apply its existing non-accrual policies including consideration of the loan's past due status which is determined on the basis of the contractual terms of the loan. Once a loan has been contractually modified, the past due status is generally based on the updated terms including payment deferrals. Future Application of Accounting Pronouncements In August 2018, the FASB issued ASU No. 2018-14, “Compensation - Retirement Benefits - Defined Benefit Plans - General (Subtopic 715-20): Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans.” This ASU amends and modifies the disclosure requirements for employers that sponsor defined benefit pension or other post-retirement plans. The amendments in this update remove disclosures that no longer are considered cost beneficial, clarify the specific requirements of disclosures, and add disclosure requirements identified as relevant. ASU No. 2018-14 is effective for fiscal years ending after December 15, 2020, with early adoption permitted. As ASU No. 2018-14 only revises disclosure requirements, it will not have a material impact on the Consolidated Financial Statements. In December 2019, the FASB issued ASU No. 2019-12, “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes.” ASU No. 2019-12 removes specific exceptions to the general principles in FASB ASC Topic 740. It eliminates the need for an organization to analyze whether the following apply in a given period: (1) exception to the incremental approach for intraperiod tax allocation; (2) exceptions to accounting for basis differences when there are ownership changes in foreign investments; and (3) exception in interim period income tax accounting for year-to-date losses that exceed anticipated losses. ASU 2019-12 also improves financial statement preparers’ application of income tax-related guidance and simplifies: (1) franchise taxes that are partially based on income; (2) transactions with a government that result in a step up in the tax basis of goodwill; (3) separate financial statements of legal entities that are not subject to tax; and (4) enacted changes in tax laws in interim periods. The amendments in this ASU become effective for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact of adopting the new guidance on the Consolidated Financial Statements. In January 2020, the FASB issued ASU No. 2020-01, “Investments - Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815): Clarifying the Interactions Between Topic 321, Topic 323, and Topic 815 (a consensus of the FASB Emerging Issues Task Force)”. ASU No. 2020-01 clarifies the interaction of the accounting for equity securities under Topic 321 and investments accounted for under the equity method of accounting in Topic 323 and the accounting for certain forward contracts and purchased options accounted for under Topic 815. The amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting for the purposes of applying the measurement alternative in accordance with Topic 321 immediately before applying or upon discontinuing the equity method. In addition, this ASU provides direction that a company should not consider whether the underlying securities would be accounted for under the equity method or the fair value option when it is determining the accounting for certain forward contracts and purchased options, upon either settlement or exercise. The amendments in this ASU become effective for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. Early adoption is permitted, and the amendments are to be applied prospectively. The Company is currently evaluating the impact of adopting the new guidance on the Consolidated Financial Statements. In March 2020, the FASB issued ASU No. 2020-04, “Facilitation of the Effects of Reference Rate Reform on Financial Reporting.” ASU No. 2020-04 provides temporary optional expedients and exceptions to GAAP guidance on contract modifications and hedge accounting to ease the financial reporting burdens of the expected market transition from LIBOR and other interbank offered rates to alternative reference rates, such as SOFR. For instance, entities can elect not to apply certain modification accounting requirements to contracts affected by reference rate reform, if certain criteria are met. An entity that makes this election would not have to remeasure the contracts at the modification date or reassess a previous accounting determination. Entities can also elect various optional expedients that would allow them to continue applying hedge accounting for hedging relationships affected by reference rate reform, if certain criteria are met. Finally, entities can make a one-time election to sell and/or reclassify held-to-maturity debt securities that reference an interest rate affected by reference rate reform. It is anticipated that this ASU will simplify any modifications that are executed between the selected start date (yet to be determined) and December 31, 2022 that are directly related to LIBOR transition by allowing prospective recognition of the continuation of the contract, rather than extinguishment of the old contract resulting in writing off unamortized fees/costs. The Company is currently evaluating the impact of adopting the new guidance on the Consolidated Financial Statements.

BASIS OF PRESENTATION (Tables)

BASIS OF PRESENTATION (Tables)	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The impact of the January 1, 2020, adoption entry is summarized in the table below: (in thousands) December 31, 2019 Pre-ASC 326 Adoption Impact of Adoption January 1, 2020 Post-ASC 326 Adoption Assets: Loans 9,502,428 — 9,502,428 PCD gross up — 15,326 15,326 Fair value option — (15,291 ) (15,291 ) Total loans 9,502,428 35 9,502,463 Allowance for credit losses on loans 63,575 25,434 89,009 Allowance for credit losses on securities — 309 309 Deferred tax assets, net 51,165 8,993 60,158 Liabilities and shareholders' equity: Other liabilities (ACL unfunded loan commitments) 100 7,993 8,093 Retained earnings 361,082 (24,380 ) 336,702 (In thousands) December 31, 2019 Statement Balance Impact of ASC 326 Adoption January 1, 2020 Post-ASC 326 Adoption Loans: Construction $ 448,452 $ 187 $ 448,639 Commercial multifamily 631,740 252 631,992 Commercial real estate owner occupied 673,308 3,185 676,493 Commercial real estate non-owner occupied 2,189,780 6,540 2,196,320 Commercial and industrial 1,522,059 (13,372 ) 1,508,687 Commercial and industrial - other 321,624 1,160 322,784 Residential real estate 2,853,385 1,868 2,855,253 Home equity 378,793 10 378,803 Consumer other 483,287 205 483,492 Total $ 9,502,428 $ 35 $ 9,502,463 Allowance: Construction $ 2,713 $ (342 ) $ 2,371 Commercial multifamily 4,413 (1,842 ) 2,571 Commercial real estate owner occupied 4,880 6,062 10,942 Commercial real estate non-owner occupied 16,344 11,201 27,545 Commercial and industrial 17,243 (2,696 ) 14,547 Commercial and industrial - other 2,856 507 3,363 Residential real estate 9,970 6,799 16,769 Home equity 1,470 4,884 6,354 Consumer other 3,686 861 4,547 Total $ 63,575 $ 25,434 $ 89,009

DISCONTINUED OPERATIONS (Tables

DISCONTINUED OPERATIONS (Tables)	3 Months Ended
	Mar. 31, 2020
Discontinued Operations and Disposal Groups [Abstract]
Summary of Discontinued Operations	The following presents operating results of the discontinued operations of FCLS for the three months ended March 31, 2020 and March 31, 2019: Three Months Ended March 31, (in thousands) 2020 2019 Interest income $ 729 $ 1,044 Interest expense 282 584 Net interest income 447 460 Non-interest income 1,358 8,813 Total net revenue 1,805 9,273 Non-interest expense 12,434 10,127 (Loss) from discontinued operations before income taxes (10,629 ) (854 ) Income tax expense (2,831 ) (217 ) Net (loss) from discontinued operations $ (7,798 ) $ (637 ) The following is a summary of the assets and liabilities of the discontinued operations of FCLS at March 31, 2020 and December 31, 2019: (in thousands) March 31, 2020 December 31, 2019 Assets Loans held for sale, at fair value $ 125,723 $ 132,655 Premises and equipment, net 682 1,073 Mortgage servicing rights, at fair value 8,518 12,299 Mortgage banking derivatives (332 ) 2,329 Right-of-use asset 2,743 3,462 Other assets 2,730 2,314 Total assets $ 140,064 $ 154,132 Liabilities Customer payments in process $ 21,241 $ 15,372 Lease liability 2,767 3,494 Other liabilities 6,546 7,615 Total liabilities $ 30,554 $ 26,481

SECURITIES AVAILABLE FOR SALE_2

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES (Tables)	3 Months Ended
	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Summary of Securities Available for Sale, Held to Maturity, and Marketable Equity Securities	The following is a summary of securities available for sale, held to maturity, and marketable equity securities: (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Allowance March 31, 2020 Securities available for sale Municipal bonds and obligations $ 108,279 $ 5,936 $ (144 ) $ 114,071 $ — Agency collateralized mortgage obligations 774,281 26,903 — 801,184 — Agency mortgage-backed securities 139,149 4,273 (94 ) 143,328 — Agency commercial mortgage-backed securities 189,253 6,178 (710 ) 194,721 — Corporate bonds 97,125 207 (3,043 ) 94,289 — Trust preferred securities 5,987 29 (524 ) 5,492 Other bonds and obligations 49,628 1,151 (6 ) 50,773 — Total securities available for sale 1,363,702 44,677 (4,521 ) 1,403,858 — Securities held to maturity Municipal bonds and obligations 247,211 14,288 — 261,499 (83 ) Agency collateralized mortgage obligations 69,050 6,582 — 75,632 — Agency mortgage-backed securities 6,070 185 — 6,255 — Agency commercial mortgage-backed securities 10,337 638 — 10,975 — Tax advantaged economic development bonds 3,838 — (79 ) 3,759 (58 ) Other bonds and obligations 296 — — 296 — Total securities held to maturity 336,802 21,693 (79 ) 358,416 (141 ) Marketable equity securities 34,288 1,912 (3,917 ) 32,283 — Total $ 1,734,792 $ 68,282 $ (8,517 ) $ 1,794,557 $ (141 ) (In thousands) Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Allowance December 31, 2019 Securities available for sale Municipal bonds and obligations $ 104,325 $ 5,813 $ — $ 110,138 $ — Agency collateralized mortgage obligations 742,550 6,431 (169 ) 748,812 — Agency mortgage-backed securities 146,589 1,515 (360 ) 147,744 — Agency commercial mortgage-backed securities 148,066 176 (1,146 ) 147,096 — Corporate bonds 115,395 1,788 (607 ) 116,576 — Other bonds and obligations 40,414 780 (5 ) 41,189 — Total securities available for sale 1,297,339 16,503 (2,287 ) 1,311,555 — Securities held to maturity Municipal bonds and obligations 252,936 13,095 (5 ) 266,026 — Agency collateralized mortgage obligations 69,667 2,870 (50 ) 72,487 — Agency mortgage-backed securities 6,271 29 — 6,300 — Agency commercial mortgage-backed securities 10,353 51 — 10,404 — Tax advantaged economic development bonds 18,456 218 (910 ) 17,764 — Other bonds and obligations 296 — — 296 — Total securities held to maturity 357,979 16,263 (965 ) 373,277 — Marketable equity securities 37,138 5,147 (729 ) 41,556 — Total $ 1,692,456 $ 37,913 $ (3,981 ) $ 1,726,388 $ —
Debt Securities, Held-to-maturity, Allowance for Credit Loss	The following table summarizes the activity in the allowance for credit losses for debt securities held to maturity by security type for the three months ended March 31, 2020: (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at beginning of period — — — Impact of ASC 326 adoption (83 ) (226 ) (309 ) Provision for credit losses- reversal — 168 168 Balance at end of period (83 ) (58 ) (141 )
Schedule of Estimated Fair Value of Available for Sale (“AFS”) and Held to Maturity (“HTM”) Securities Segregated by Contractual Maturity	The amortized cost and estimated fair value of available for sale (“AFS”) and held to maturity (“HTM”) securities segregated by contractual maturity at March 31, 2020 are presented below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Mortgage-backed securities are shown in total, as their maturities are highly variable. Available for sale Held to maturity Amortized Fair Amortized Fair (In thousands) Cost Value Cost Value Within 1 year $ 43,509 $ 43,660 $ 1,614 $ 1,614 Over 1 year to 5 years 16,655 16,466 6,033 6,043 Over 5 years to 10 years 78,121 78,061 19,522 19,940 Over 10 years 122,734 126,438 224,176 237,957 Total bonds and obligations 261,019 264,625 251,345 265,554 Mortgage-backed securities 1,102,683 1,139,233 85,457 92,862 Total $ 1,363,702 $ 1,403,858 $ 336,802 $ 358,416
Schedule of Securities Available for Sale and Held to Maturity with Unrealized Losses, Segregated by Duration	Securities available for sale and held to maturity with unrealized losses, segregated by the duration of their continuous unrealized loss positions, are summarized as follows: Less Than Twelve Months Over Twelve Months Total Gross Gross Gross Unrealized Fair Unrealized Fair Unrealized Fair (In thousands) Losses Value Losses Value Losses Value March 31, 2020 Securities available for sale Municipal bonds and obligations $ 144 $ 4,608 $ — $ — $ 144 $ 4,608 Agency mortgage-backed securities 84 5,750 10 315 94 6,065 Agency commercial mortgage-backed securities 710 9,324 — — 710 9,324 Corporate bonds 1,348 60,156 1,695 25,029 3,043 85,185 Trust preferred securities 524 4,361 — — 524 4,361 Other bonds and obligations 5 1,124 1 27 6 1,151 Total securities available for sale 2,815 85,323 1,706 25,371 4,521 110,694 Securities held to maturity Tax advantaged economic development bonds 79 3,759 — — 79 3,759 Total securities held to maturity 79 3,759 — — 79 3,759 Total $ 2,894 $ 89,082 $ 1,706 $ 25,371 $ 4,600 $ 114,453 December 31, 2019 Securities available for sale Agency collateralized mortgage obligations 127 52,623 42 6,267 169 58,890 Agency mortgage-backed securities 59 10,640 301 23,404 360 34,044 Agency commercial mortgage-backed securities 1,097 116,324 49 11,250 1,146 127,574 Corporate bonds — — 607 42,823 607 42,823 Other bonds and obligations 4 1,239 1 29 5 1,268 Total securities available for sale 1,287 180,826 1,000 83,773 2,287 264,599 Securities held to maturity Municipal bonds and obligations 5 800 — — 5 800 Agency collateralized mortgage obligations 50 9,778 — — 50 9,778 Tax advantaged economic development bonds — — 910 6,925 910 6,925 Total securities held to maturity 55 10,578 910 6,925 965 17,503 Total $ 1,342 $ 191,404 $ 1,910 $ 90,698 $ 3,252 $ 282,102

LOANS AND ALLOWANCE FOR CREDI_2

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables)	3 Months Ended
	Mar. 31, 2020
Credit Loss [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The impact of the January 1, 2020, adoption entry is summarized in the table below: (in thousands) December 31, 2019 Pre-ASC 326 Adoption Impact of Adoption January 1, 2020 Post-ASC 326 Adoption Assets: Loans 9,502,428 — 9,502,428 PCD gross up — 15,326 15,326 Fair value option — (15,291 ) (15,291 ) Total loans 9,502,428 35 9,502,463 Allowance for credit losses on loans 63,575 25,434 89,009 Allowance for credit losses on securities — 309 309 Deferred tax assets, net 51,165 8,993 60,158 Liabilities and shareholders' equity: Other liabilities (ACL unfunded loan commitments) 100 7,993 8,093 Retained earnings 361,082 (24,380 ) 336,702 (In thousands) December 31, 2019 Statement Balance Impact of ASC 326 Adoption January 1, 2020 Post-ASC 326 Adoption Loans: Construction $ 448,452 $ 187 $ 448,639 Commercial multifamily 631,740 252 631,992 Commercial real estate owner occupied 673,308 3,185 676,493 Commercial real estate non-owner occupied 2,189,780 6,540 2,196,320 Commercial and industrial 1,522,059 (13,372 ) 1,508,687 Commercial and industrial - other 321,624 1,160 322,784 Residential real estate 2,853,385 1,868 2,855,253 Home equity 378,793 10 378,803 Consumer other 483,287 205 483,492 Total $ 9,502,428 $ 35 $ 9,502,463 Allowance: Construction $ 2,713 $ (342 ) $ 2,371 Commercial multifamily 4,413 (1,842 ) 2,571 Commercial real estate owner occupied 4,880 6,062 10,942 Commercial real estate non-owner occupied 16,344 11,201 27,545 Commercial and industrial 17,243 (2,696 ) 14,547 Commercial and industrial - other 2,856 507 3,363 Residential real estate 9,970 6,799 16,769 Home equity 1,470 4,884 6,354 Consumer other 3,686 861 4,547 Total $ 63,575 $ 25,434 $ 89,009
Schedule of Loans	The following is a summary of total loans by regulatory call report code with sub-segmentation based on underlying collateral for certain loan types: (in thousands) March 31, 2020 December 31, 2019 Construction $ 463,803 $ 448,452 Commercial multifamily 606,257 631,740 Commercial real estate owner occupied 624,705 673,308 Commercial real estate non-owner occupied 2,212,816 2,189,780 Commercial and industrial 1,486,054 1,522,059 Commercial and industrial - other 319,809 321,624 Residential real estate 2,766,707 2,853,385 Home equity 377,135 378,793 Consumer other 445,891 483,287 Total loans $ 9,303,177 $ 9,502,428 Allowance for credit losses 113,510 63,575 Net loans $ 9,189,667 $ 9,438,853 The following is a summary of total loans as of December 31, 2019 : December 31, 2019 (In thousands) Business Acquired Total Commercial real estate: Construction $ 382,014 $ 47,792 $ 429,806 Other commercial real estate 2,414,942 1,189,521 3,604,463 Total commercial real estate 2,796,956 1,237,313 4,034,269 Commercial and industrial loans: 1,442,617 397,891 1,840,508 Total commercial loans 4,239,573 1,635,204 5,874,777 Residential mortgages: 1-4 family 2,143,817 533,536 2,677,353 Construction 4,641 3,478 8,119 Total residential mortgages 2,148,458 537,014 2,685,472 Consumer loans: Home equity 273,867 106,724 380,591 Auto and other 504,599 56,989 561,588 Total consumer loans 778,466 163,713 942,179 Total loans $ 7,166,497 $ 2,335,931 $ 9,502,428
Schedule of Allowance for Credit Losses for Loans, Activity	The Company’s activity in the allowance for credit losses for loans for the three months ended March 31, 2020 was as follows: (in thousands) Balance at Beginning of Period Impact of Adopting ASC 326 Sub-total Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Three months ended March 31, 2020 Construction $ 2,713 $ (342 ) $ 2,371 $ — $ — $ 2,202 $ 4,573 Multifamily 4,413 (1,842 ) 2,571 — — 1,882 4,453 Commercial real estate owner occupied 4,880 6,062 10,942 (6,376 ) 258 6,783 11,607 Commercial real estate non-owner occupied 16,344 11,201 27,545 (135 ) 47 1,406 28,863 Commercial and industrial 17,243 (2,696 ) 14,547 (4,428 ) 1,354 8,364 19,837 Commercial and industrial - other 2,856 507 3,363 (488 ) 48 1,742 4,665 Residential real estate 9,970 6,799 16,769 (171 ) 70 9,389 26,057 Home equity 1,470 4,884 6,354 (77 ) 2 1,501 7,780 Consumer other 3,686 861 4,547 (758 ) 180 1,706 5,675 Total allowance for credit losses $ 63,575 $ 25,434 $ 89,009 $ (12,433 ) $ 1,959 $ 34,975 $ 113,510
Schedule of Allowance for Credit Losses on Unfunded Loan Commitments, Activity	The Company’s activity in the allowance for credit losses on unfunded commitments for the three months ended March 31, 2020 was as follows: (in thousands) Total Balance at beginning of period $ 100 Impact of adopting ASC 326 7,993 Sub-Total 8,093 Expense for credit losses 330 Balance at end of period $ 8,423
Schedule of Loans by Risk Rating	The following table presents the Company’s loans by risk category: Term Loans Amortized Cost Basis by Origination Year (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of March 31, 2020 Construction Risk rating Pass $ 4,218 $ 175,665 $ 203,349 $ 57,368 $ 17,680 $ 3,637 $ 136 $ — $ 462,053 Special Mention — — — — — — — — — Substandard — — — — — 1,750 — — 1,750 Total $ 4,218 $ 175,665 $ 203,349 $ 57,368 $ 17,680 $ 5,387 $ 136 $ — $ 463,803 Commercial multifamily: Risk rating Pass $ 3,427 $ 53,936 $ 98,767 $ 86,801 $ 113,350 $ 240,457 $ 911 $ — $ 597,649 Special Mention — — — — — — — — — Substandard — — — — — 8,457 151 — 8,608 Total $ 3,427 $ 53,936 $ 98,767 $ 86,801 $ 113,350 $ 248,914 $ 1,062 $ — $ 606,257 Commercial real estate owner occupied: Risk rating Pass $ 13,229 $ 96,993 $ 121,157 $ 67,848 $ 37,469 $ 242,264 $ 4,810 $ — $ 583,770 Special Mention — — 2,132 2,624 2,429 548 1,657 — 9,390 Substandard — — 5,325 1,235 2,072 22,863 50 — 31,545 Total $ 13,229 $ 96,993 $ 128,614 $ 71,707 $ 41,970 $ 265,675 $ 6,517 $ — $ 624,705 Commercial real estate non-owner occupied: Risk rating Pass $ 29,059 $ 304,620 $ 397,618 $ 276,233 $ 351,479 $ 762,925 $ 18,241 $ — $ 2,140,175 Special Mention — — 751 — 1,200 6,002 — — 7,953 Substandard 8,845 — 3,039 8,617 1,495 42,497 195 — 64,688 Total $ 37,904 $ 304,620 $ 401,408 $ 284,850 $ 354,174 $ 811,424 $ 18,436 $ — $ 2,212,816 Commercial and industrial: Risk rating Pass $ 33,562 $ 142,058 $ 253,788 $ 154,409 $ 63,737 $ 208,174 $ 554,874 $ — $ 1,410,602 Special Mention — 60 14,444 1,276 650 — 28,565 — 44,995 Substandard — 505 7,011 2,561 2,243 6,066 11,565 — 29,951 Doubtful — — — — — — 506 — 506 Total $ 33,562 $ 142,623 $ 275,243 $ 158,246 $ 66,630 $ 214,240 $ 595,510 $ — $ 1,486,054 Term Loans Amortized Cost Basis by Origination Year (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Commercial and industrial - other: Risk rating Pass $ 21,873 $ 112,378 $ 90,685 $ 41,369 $ 11,316 $ 19,252 $ 6,132 $ — $ 303,005 Special Mention — — — — — — — — — Substandard — 1,129 3,833 1,193 3,545 2,931 4,173 — 16,804 Doubtful — — — — — — — — — Total $ 21,873 $ 113,507 $ 94,518 $ 42,562 $ 14,861 $ 22,183 $ 10,305 $ — $ 319,809 Residential real estate Risk rating Pass 53,634 200,007 572,834 510,162 467,010 943,845 2,389 — $ 2,749,881 Special Mention — — — 98 — 1,382 — — 1,480 Substandard — 97 169 1,000 777 13,293 10 — 15,346 Total $ 53,634 $ 200,104 $ 573,003 $ 511,260 $ 467,787 $ 958,520 $ 2,399 $ — $ 2,766,707 For home equity and consumer other loan portfolio segments, Berkshire evaluates credit quality based on the aging status of the loan and by payment activity. The performing or nonperforming status is updated on an ongoing basis dependent upon improvement and deterioration in credit quality. The following table presents the amortized cost based on payment activity: Term Loans Amortized Cost Basis by Origination Year (in thousands) 2020 2019 2018 2017 2016 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of March 31, 2020 Home equity: Payment performance Performing $ 264 $ 285 $ — $ — $ — $ 41 $ 374,221 $ — $ 374,811 Nonperforming — — 4 — — 16 2,304 — 2,324 Total $ 264 $ 285 $ 4 $ — $ — $ 57 $ 376,525 $ — $ 377,135 Consumer other: Payment performance Performing $ 3,666 $ 47,684 $ 156,080 $ 108,699 $ 64,219 $ 51,077 $ 10,966 $ — $ 442,391 Nonperforming — 231 831 1,098 780 434 126 — 3,500 Total $ 3,666 $ 47,915 $ 156,911 $ 109,797 $ 64,999 $ 51,511 $ 11,092 $ — $ 445,891 Business Activities Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category (In thousands) Construction Real Estate Total Commercial Real Estate Grade: Pass $ 382,014 $ 2,354,375 $ 2,736,389 Special mention — 12,167 12,167 Substandard — 48,400 48,400 Total $ 382,014 $ 2,414,942 $ 2,796,956 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category (In thousands) Total Commercial and Industrial Loans Grade: Pass $ 1,366,342 Special mention 50,072 Substandard 24,112 Doubtful 2,091 Total $ 1,442,617 Residential Mortgages Credit Risk Profile by Internally Assigned Grade (In thousands) 1-4 Family Construction Total Residential Mortgages Grade: Pass $ 2,139,753 $ 4,641 $ 2,144,394 Special mention 714 — 714 Substandard 3,350 — 3,350 Total $ 2,143,817 $ 4,641 $ 2,148,458 Consumer Loans Credit Risk Profile Based on Payment Activity (In thousands) Home Equity Auto and Other Total Consumer Loans Performing $ 272,772 $ 501,871 $ 774,643 Nonperforming 1,095 2,728 3,823 Total $ 273,867 $ 504,599 $ 778,466 Acquired Loans Commercial Real Estate Credit Risk Profile by Creditworthiness Category (In thousands) Construction Real Estate Total Commercial Real Estate Grade: Pass $ 46,396 $ 1,130,333 $ 1,176,729 Special mention — 5,993 5,993 Substandard 1,396 53,195 54,591 Total $ 47,792 $ 1,189,521 $ 1,237,313 Commercial and Industrial Loans Credit Risk Profile by Creditworthiness Category (In thousands) Total Commercial and Industrial Loans Grade: Pass $ 373,744 Special mention 4,404 Substandard 19,743 Total $ 397,891 Residential Mortgages Credit Risk Profile by Internally Assigned Grade (In thousands) 1-4 Family Construction Total Residential Mortgages Grade: Pass $ 528,282 $ 3,478 $ 531,760 Special mention 592 — 592 Substandard 4,662 — 4,662 Total $ 533,536 $ 3,478 $ 537,014 Consumer Loans Credit Risk Profile Based on Payment Activity (In thousands) Home Equity Auto and Other Total Consumer Loans Performing $ 106,007 $ 56,724 $ 162,731 Nonperforming 717 265 982 Total $ 106,724 $ 56,989 $ 163,713
Summary of Past Due Loans	The following is a summary of loans by past due status at March 31, 2020: (in thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans March 31, 2020 Construction $ — $ — $ — $ — $ 463,803 $ 463,803 Commercial multifamily 20 — 803 823 605,434 606,257 Commercial real estate owner occupied 6,141 149 12,428 18,718 605,987 624,705 Commercial real estate non-owner occupied 6,978 6,868 2,609 16,455 2,196,361 2,212,816 Commercial and industrial 1,800 750 12,593 15,143 1,470,911 1,486,054 Commercial and industrial - other 843 700 7,617 9,160 310,649 319,809 Residential real estate 6,445 2,070 14,082 22,597 2,744,110 2,766,707 Home equity 2,069 318 2,528 4,915 372,220 377,135 Consumer other 3,751 681 3,508 7,940 437,951 445,891 Total $ 28,047 $ 11,536 $ 56,168 $ 95,751 $ 9,207,426 $ 9,303,177 The following is a summary of past due loans at December 31, 2019: Business Activities Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Current Total Loans Past Due > December 31, 2019 Commercial real estate: Construction $ — $ — $ — $ — $ 382,014 $ 382,014 $ — Commercial real estate 423 89 15,623 16,135 2,398,807 2,414,942 — Total 423 89 15,623 16,135 2,780,821 2,796,956 — Commercial and industrial loans Total 2,841 2,033 10,662 15,536 1,427,081 1,442,617 122 Residential mortgages: 1-4 family 1,669 714 3,350 5,733 2,138,084 2,143,817 800 Construction — — — — 4,641 4,641 — Total 1,669 714 3,350 5,733 2,142,725 2,148,458 800 Consumer loans: Home equity 149 — 1,147 1,296 272,571 273,867 52 Auto and other 4,709 990 2,729 8,428 496,171 504,599 1 Total 4,858 990 3,876 9,724 768,742 778,466 53 Total $ 9,791 $ 3,826 $ 33,511 $ 47,128 $ 7,119,369 $ 7,166,497 $ 975 Acquired Loans (in thousands) 30-59 Days 60-89 Days >90 Days Past Due Total Past Acquired Total Loans Past Due > December 31, 2019 Commercial real estate: Construction $ — $ — $ — $ — $ 1,396 $ 47,792 $ — Commercial real estate 3,907 245 10,247 14,399 21,639 1,189,521 5,751 Total 3,907 245 10,247 14,399 23,035 1,237,313 5,751 Commercial and industrial loans Total 888 299 1,275 2,462 26,718 397,891 442 Residential mortgages: 1-4 family 745 491 932 2,168 10,840 533,536 139 Construction — — — — — 3,478 — Total 745 491 932 2,168 10,840 537,014 139 Consumer loans: Home equity 346 222 789 1,357 540 106,724 72 Auto and other 120 22 265 407 286 56,989 — Total 466 244 1,054 1,764 826 163,713 72 Total $ 6,006 $ 1,279 $ 13,508 $ 20,793 $ 61,419 $ 2,335,931 $ 6,404
Summary of Loans on Nonaccrual Status and Loans Past Due	The following is a summary of loans on nonaccrual status and loans past due 90 days or more and still accruing as of March 31, 2020: (in thousands) Beginning of Period Nonaccrual Amortized Cost End of Period Nonaccrual Amortized Cost Nonaccrual With No Related Allowance Past Due 90 Days or Greater and Accruing Interest Income Recognized on Nonaccrual At or for the three months ended March 31, 2020 Construction $ — $ — $ — $ — $ — Commercial multifamily 811 803 380 — — Commercial real estate owner occupied 15,389 10,596 7,967 1,832 — Commercial real estate non-owner occupied 1,031 1,555 — 1,054 — Commercial and industrial 5,465 10,743 1,405 1,850 — Commercial and industrial - other 5,753 7,617 6,009 — — Residential real estate 6,411 13,978 2,908 104 — Home equity 1,798 2,324 279 204 — Consumer other 2,982 3,500 — 8 — Total $ 39,640 $ 51,116 $ 18,948 $ 5,052 $ — The following is summary information pertaining to non-accrual loans at year-end 2019: December 31, 2019 (In thousands) Business Activities Acquired Loans Total Commercial real estate: Construction $ — $ — $ — Other commercial real estate 15,623 4,496 20,119 Total 15,623 4,496 20,119 Commercial and industrial loans: Total 10,540 833 11,373 Residential mortgages: 1-4 family 2,550 793 3,343 Construction — — — Total 2,550 793 3,343 Consumer loans: Home equity 1,095 717 1,812 Auto and other 2,728 265 2,993 Total 3,823 982 4,805 Total non-accrual loans $ 32,536 $ 7,104 $ 39,640
Schedule of Troubled Debt Restructurings, Activity	The modifications for the three months ended March 31, 2019 were attributable to interest rate concessions, maturity date extensions, modified payment terms, reamortization, and accelerated maturity. Modifications by Class Number of Pre-Modification Post-Modification Troubled Debt Restructurings Commercial real estate 2 $ 145 $ 145 Commercial and industrial loans 1 193 193 3 $ 338 $ 338 The following table presents activity in TDRs for the three months ended March 31, 2020: (in thousands) Balance at beginning of period Principal payments TDR Status change Other reductions Newly identified TDRs Balance at end of period Three months ended March 31, 2020 Construction $ — $ — $ — $ — $ — $ — Commercial multifamily 793 (14 ) — — — 779 Commercial real estate owner occupied 13,331 (5,693 ) — — — 7,638 Commercial real estate non-owner occupied 1,373 — — — — 1,373 Commercial and industrial 1,109 (13 ) — — — 1,096 Commercial and industrial - other 340 (24 ) — — 902 1,218 Residential real estate 2,045 (22 ) — — — 2,023 Home equity 277 1 — — — 278 Consumer other 48 (4 ) — — — 44 Total $ 19,316 $ (5,769 ) $ — $ — $ 902 $ 14,449 The following table presents the Company’s TDR activity for the three months ended March 31, 2019: (In thousands) March 31, 2019 Balance at beginning of year $ 27,415 Principal payments (1,413 ) TDR status change (1) — Other reductions (2) (1,155 ) Newly identified TDRs 338 Balance at end of year $ 25,185 ________________________________ (1) TDR status change classification represents TDR loans with a specified interest rate equal to or greater than the rate that the Company was willing to accept at the time of the restructuring for a new loan with comparable risk and the loan was on current payment status and not impaired based on the terms specified by the restructuring agreement. (2) Other reductions classification consists of transfer to other real estate owned, charge-offs to loans, and other loan sale payoffs.
Schedule of Loans Modified as TDRs	The following table presents loans modified as TDRs that occurred during the three months ended March 31, 2020 and 2019: (dollars in thousands) Total Three months ended March 31, 2020 TDR: Number of loans 3 Pre-modification outstanding recorded investment $ 902 Post-modification outstanding recorded investment $ 902 Three months ended March 31, 2019 TDR: Number of loans 3 Pre-modification outstanding recorded investment $ 338 Post-modification outstanding recorded investment $ 338
Schedule of Unamortized Net Costs and Premiums on Accounts Notes Loans and Financing Receivable	Total unamortized net costs and premiums included in the December 31, 2019 total loans for business activity loans were the following: (In thousands) December 31, 2019 Unamortized net loan origination costs $ 13,259 Unamortized net premium on purchased loans 2,643 Total unamortized net costs and premiums $ 15,902
Schedule of Activity in the Allowance for Loan Losses	Activity in the allowance for loan losses for the three months ended March 31, 2019 was as follows: At or for the three months ended March 31, 2019 Business Activities Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Total Balance at beginning of period $ 21,732 $ 16,504 $ 10,535 $ 7,368 $ 56,139 Charged-off loans 1,256 1,676 42 919 3,893 Recoveries on charged-off loans 208 307 15 54 584 Provision/(releases) for loan losses 1,837 3,112 (1,299 ) (268 ) 3,382 Balance at end of period $ 22,521 $ 18,247 $ 9,209 $ 6,235 $ 56,212 Individually evaluated for impairment 7 52 120 9 188 Collectively evaluated for impairment 22,514 18,195 9,089 6,226 56,024 Total $ 22,521 $ 18,247 $ 9,209 $ 6,235 $ 56,212 At or for the three months ended March 31, 2019 Acquired Loans (In thousands) Commercial real estate Commercial and industrial loans Residential mortgages Consumer Total Balance at beginning of period $ 3,153 $ 1,064 $ 630 $ 483 $ 5,330 Charged-off loans 180 262 73 171 686 Recoveries on charged-off loans 476 51 5 31 563 Provision/(releases) for loan losses 461 26 60 72 619 Balance at end of period $ 3,910 $ 879 $ 622 $ 415 $ 5,826 Individually evaluated for impairment 48 4 36 44 132 Collectively evaluated for impairment 3,862 875 586 371 5,694 Total $ 3,910 $ 879 $ 622 $ 415 $ 5,826
Schedule of Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Accretable Yield Movement	The following table summarizes activity in the accretable yield for the acquired loan portfolio that falls under the purview of ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality : (In thousands) March 31, 2019 Balance at beginning of period $ 2,840 Accretion (1,320 ) Net reclassification from nonaccretable difference 665 Payments received, net (55 ) Reclassification to TDR 9 Balance at end of period $ 2,139
Schedule of Loans Evaluated for Impairment	Loans evaluated for impairment as of December 31, 2019 were as follows: Business Activities Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 19,192 $ 9,167 $ 3,019 $ 630 $ 32,008 Collectively evaluated 2,777,764 1,433,450 2,145,439 777,836 7,134,489 Total $ 2,796,956 $ 1,442,617 $ 2,148,458 $ 778,466 $ 7,166,497 Acquired Loans (In thousands) Commercial Commercial Residential Consumer Total Loans receivable: Balance at end of year Individually evaluated for impairment $ 4,241 $ 464 $ 372 $ 575 $ 5,652 Purchased credit-impaired loans 23,035 26,718 10,840 826 61,419 Collectively evaluated 1,210,037 370,709 525,802 162,312 2,268,860 Total $ 1,237,313 $ 397,891 $ 537,014 $ 163,713 $ 2,335,931
Impaired Financing Receivables	The following is a summary of impaired loans at December 31, 2019: Business Activities Loans December 31, 2019 (In thousands) Recorded Investment (1) Unpaid Principal Related Allowance With no related allowance: Other commercial real estate loans $ 18,676 $ 37,493 $ — Commercial and industrial loans 4,805 10,104 — Residential mortgages - 1-4 family 433 699 — Consumer - home equity 32 238 — Consumer - other — — — With an allowance recorded: Other commercial real estate loans $ 550 $ 1,411 $ 20 Commercial and industrial loans 4,166 12,136 122 Residential mortgages - 1-4 family 2,615 2,924 109 Consumer - home equity 594 614 42 Consumer - other 8 8 1 Total Commercial real estate $ 19,226 $ 38,904 $ 20 Commercial and industrial loans 8,971 22,240 122 Residential mortgages 3,048 3,623 109 Consumer 634 860 43 Total impaired loans $ 31,879 $ 65,627 $ 294 (1) The Recorded Investment represents the face amount of the loan increased or decreased by applicable accrued interest, net deferred loan fees and costs, and unamortized premium or discount, and reflects direct charge-offs. This amount is a component of total loans on the Consolidated Balance Sheet. (2) The Unpaid Principal Balance represents the customer's legal obligation to the Company. Acquired Loans December 31, 2019 (In thousands) Recorded Investment (1) Unpaid Principal Related Allowance With no related allowance: Other commercial real estate loans $ 3,200 $ 6,021 $ — Other commercial and industrial loans 437 532 — Residential mortgages - 1-4 family 292 293 — Consumer - home equity 416 844 — Consumer - other — — — With an allowance recorded: Other commercial real estate loans $ 1,033 $ 1,050 $ 97 Commercial and industrial loans 28 30 1 Residential mortgages - 1-4 family 84 110 8 Consumer - home equity 121 123 6 Consumer - other 39 37 6 Total Commercial real estate $ 4,233 $ 7,071 $ 97 Commercial and industrial loans 465 562 1 Residential mortgages 376 403 8 Consumer 576 1,004 12 Total impaired loans $ 5,650 $ 9,040 $ 118 (1) The Recorded Investment represents the face amount of the loan increased or decreased by applicable accrued interest, net deferred loan fees and costs, and unamortized premium or discount, and reflects direct charge-offs. This amount is a component of total loans on the Consolidated Balance Sheet. (2) The Unpaid Principal Balance represents the customer's legal obligation to the Company.
Impaired Financing Receivables Average Balances and Related Interest Income Recognized	The following is a summary of the average recorded investment and interest income recognized on impaired loans as of December 31, 2019: Business Activities Loans December 31, 2019 (in thousands) Average Recorded Cash Basis Interest With no related allowance: Other commercial real estate $ 19,805 $ 586 Other commercial and industrial 3,165 523 Residential mortgages - 1-4 family 185 17 Consumer-home equity 148 3 Consumer-other — — With an allowance recorded: Other commercial real estate $ 374 $ 107 Other commercial and industrial 2,533 793 Residential mortgages - 1-4 family 2,427 150 Consumer-home equity 349 32 Consumer - other 11 1 Total Commercial real estate $ 20,179 $ 693 Commercial and industrial 5,698 1,316 Residential mortgages 2,612 167 Consumer loans 508 36 Total impaired loans $ 28,997 $ 2,212 Acquired Loans December 31, 2019 (in thousands) Average Recorded Cash Basis Interest With no related allowance: Other commercial real estate $ 1,603 $ 117 Other commercial and industrial 441 51 Residential mortgages - 1-4 family 241 11 Consumer - home equity 475 23 Consumer - other — — With an allowance recorded: Other commercial real estate $ 1,005 $ 59 Other commercial and industrial 29 2 Residential mortgages - 1-4 family 88 7 Consumer - home equity 68 6 Consumer - other 41 2 Total Commercial real estate $ 2,608 $ 176 Commercial and industrial 470 53 Residential mortgages 329 18 Consumer loans 584 31 Total impaired loans $ 3,991 $ 278

DEPOSITS (Tables)

DEPOSITS (Tables)	3 Months Ended
	Mar. 31, 2020
Deposits [Abstract]
Summary of Time Deposits	A summary of time deposits is as follows: (In thousands) March 31, December 31, Time less than $100,000 $ 871,215 $ 905,190 Time $100,000 through $250,000 1,825,472 2,027,717 Time more than $250,000 647,013 656,462 Total time deposits $ 3,343,700 $ 3,589,369

BORROWED FUNDS (Tables)

BORROWED FUNDS (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Schedule of Borrowed Funds	Borrowed funds at March 31, 2020 and December 31, 2019 are summarized, as follows: March 31, 2020 December 31, 2019 Weighted Weighted Average Average (Dollars in thousands) Principal Rate Principal Rate Short-term borrowings: Advances from the FHLB $ 225,000 1.45 % $ 125,000 2.06 % Total short-term borrowings: 225,000 1.45 125,000 2.06 Long-term borrowings: Advances from the FHLB and other borrowings 719,053 2.07 605,501 2.16 Subordinated borrowings 74,277 7.00 74,232 7.00 Junior subordinated borrowing - Trust I 15,464 2.44 15,464 3.76 Junior subordinated borrowing - Trust II 7,366 3.53 7,353 3.59 Total long-term borrowings: 816,160 2.54 702,550 2.72 Total $ 1,041,160 2.30 % $ 827,550 2.62 %
Summary of Maturities of FHLBB Advances	A summary of maturities of FHLB advances as of March 31, 2020 is as follows: March 31, 2020 Weighted Average (In thousands, except rates) Principal Rate Fixed rate advances maturing: 2020 $ 468,180 2.02 % 2021 395,476 1.80 2022 59,136 1.92 2023 11,675 2.21 2023 and beyond 9,586 1.61 Total FHLB advances $ 944,053 1.92 %

DERIVATIVE INSTRUMENTS AND HE_2

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Swap Agreements and Non-Hedging Derivative Assets and Liabilities	Information about derivative assets and liabilities at March 31, 2020 , follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Economic hedges: Interest rate swap on tax advantaged economic development bond $ 9,209 9.7 1.95 % 5.09 % $ (2,051 ) Interest rate swaps on loans with commercial loan customers 1,674,769 6.3 4.34 % 2.96 % 177,708 Offsetting interest rate swaps on loans with commercial loan customers (1) 1,674,769 6.3 2.96 % 4.34 % (73,046 ) Risk participation agreements with dealer banks 315,756 7.3 586 Forward sale commitments (2) 309,965 0.2 (4,490 ) Total economic hedges 3,984,468 98,707 Non-hedging derivatives: Commitments to lend (2) 213,088 0.2 4,836 Total non-hedging derivatives 213,088 4,836 Total $ 4,197,556 $ 103,543 (1) Fair value estimates include the impact of $109 million settled to market contract agreements. (2) Includes the impact of discontinued operations. Information about derivative assets and liabilities at December 31, 2019 , follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Economic hedges: Interest rate swap on tax advantaged economic development bond $ 9,390 9.9 2.08 % 5.09 % $ (1,488 ) Interest rate swaps on loans with commercial loan customers 1,669,895 6.4 4.38 % 3.28 % 75,326 Offsetting interest rate swaps on loans with commercial loan customers 1,669,895 6.4 3.28 % 4.38 % (77,051 ) Risk participation agreements with dealer banks 315,140 7.5 320 Forward sale commitments (1) 237,412 0.2 (227 ) Total economic hedges 3,901,732 (3,120 ) Non-hedging derivatives: Commitments to lend (1) 168,997 0.2 2,628 Total non-hedging derivatives 168,997 2,628 Total $ 4,070,729 $ (492 ) (1) Includes the impact of discontinued operations.
Schedule of Amounts Included in the Consolidated Statements of Income Related to Economic Hedges and Non-Hedging Derivatives	Amounts included in the Consolidated Statements of Income related to economic hedges and non-hedging derivatives were as follows: Three Months Ended March 31, (In thousands) 2020 2019 Economic hedges Interest rate swap on industrial revenue bond: Unrealized (loss) recognized in other non-interest income $ (563 ) $ (121 ) Interest rate swaps on loans with commercial loan customers: Unrealized gain/(loss) recognized in other non-interest income 102,382 (21,988 ) (Unfavorable) change in credit valuation adjustment recognized in other non-interest income (2,538 ) (137 ) Offsetting interest rate swaps on loans with commercial loan customers: Unrealized (loss)/gain recognized in other non-interest income (102,382 ) 21,988 Risk participation agreements: Unrealized gain recognized in other non-interest income 266 125 Forward commitments: Unrealized (loss) recognized in discontinued operations (4,263 ) (518 ) Realized (loss) in discontinued operations (1,922 ) (1,715 ) Non-hedging derivatives Commitments to lend Unrealized gain recognized in discontinued operations $ 2,208 $ 2,391 Realized gain in discontinued operations 9,300 9,432
Schedule of Assets Subject to an Enforceable Master Netting Arrangement	Offsetting of Financial Assets and Derivative Assets Gross Amounts of Gross Amounts Offset in the Net Amounts of Assets Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (In thousands) Assets Condition Condition Instruments Collateral Received Net Amount March 31, 2020 Interest Rate Swap Agreements: Institutional counterparties $ 1,209 $ (100 ) $ 1,109 $ — $ — $ 1,109 Commercial counterparties 177,708 — 177,708 — — 177,708 Total $ 178,917 $ (100 ) $ 178,817 $ — $ — $ 178,817 Offsetting of Financial Assets and Derivative Assets Gross Amounts of Gross Amounts Offset in the Net Amounts of Assets Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (In thousands) Assets Condition Condition Instruments Collateral Received Net Amount December 31, 2019 Interest Rate Swap Agreements: Institutional counterparties $ 640 $ (54 ) $ 586 $ — $ — $ 586 Commercial counterparties 76,428 (22 ) 76,406 — — 76,406 Total $ 77,068 $ (76 ) $ 76,992 $ — $ — $ 76,992
Schedule of Liabilities Subject to an Enforceable Master Netting Arrangement	Offsetting of Financial Liabilities and Derivative Liabilities Gross Amounts of Gross Amounts Offset in the Net Amounts of Liabilities Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (In thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount March 31, 2020 Interest Rate Swap Agreements: Institutional counterparties $ (75,621 ) $ — $ (75,621 ) $ 35,488 $ 72,411 $ 32,278 Commercial counterparties — — — — — — Total $ (75,621 ) $ — $ (75,621 ) $ 35,488 $ 72,411 $ 32,278 Offsetting of Financial Liabilities and Derivative Liabilities Gross Amounts of Gross Amounts Offset in the Net Amounts of Liabilities Presented in the Gross Amounts Not Offset in the Statements of Condition Recognized Statements of Statements of Financial Cash (In thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount December 31, 2019 Interest Rate Swap Agreements: Institutional counterparties $ (80,024 ) $ 1,219 $ (78,805 ) $ 25,828 $ 96,310 $ 43,333 Commercial counterparties (1,080 ) — (1,080 ) — — (1,080 ) Total $ (81,104 ) $ 1,219 $ (79,885 ) $ 25,828 $ 96,310 $ 42,253

LEASES (Tables)

LEASES (Tables)	3 Months Ended
	Mar. 31, 2020
Leases [Abstract]
Schedule of ROU Assets and Lease Liabilities	The following table represents the Consolidated Balance Sheets classification of the Company’s right-of-use (“ROU”) assets and lease liabilities: (In thousands) March 31, 2020 December 31, 2019 Lease Right-of-Use Assets Classification Operating lease right-of-use assets (1) Other assets $ 73,356 $ 76,332 Finance lease right-of-use assets Premises and equipment, net 7,589 7,720 Total Lease Right-of-Use Assets $ 80,945 $ 84,052 Lease Liabilities Operating lease liabilities (2) Other liabilities $ 77,720 $ 80,734 Finance lease liabilities Other liabilities 10,760 10,883 Total Lease Liabilities $ 88,480 $ 91,617 (1) Includes operating lease right-of-use assets classified as discontinued operations of $2.7 million and $3.5 million as of March 31, 2020 and December 31, 2019, respectively. (2) Includes operating lease liabilities classified as discontinued operations of $2.8 million and $3.5 million as of March 31, 2020 and December 31, 2019, respectively.
Supplemental Information Related to Leases	Supplemental information related to leases was as follows: March 31, 2020 December 31, 2019 Weighted-Average Remaining Lease Term (in years) Operating leases 10.1 10.3 Finance leases 14.6 14.8 Weighted-Average Discount Rate Operating leases 3.35 % 3.36 % Finance leases 5.00 % 5.00 %
Summary of Supplemental Cash Flow Information Related to Leases	Supplemental cash flow information related to leases was as follows: Three Months Ended (In thousands) March 31, 2020 March 31, 2019 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases (1) $ 3,628 $ 3,498 Operating cash flows from finance leases 134 159 Financing cash flows from finance leases 124 98
Schedule of Maturity Analysis of Operating Lease Liability	The following table presents a maturity analysis of the Company’s lease liability by lease classification at March 31, 2020: (In thousands) Operating Leases Finance Leases 2020 $ 9,923 $ 765 2021 12,427 1,031 2022 11,370 1,031 2023 9,354 1,037 2024 7,909 1,037 Thereafter 40,984 10,260 Total undiscounted lease payments (1) 91,967 15,161 Less amounts representing interest (1) (14,247 ) (4,401 ) Lease liability (1) $ 77,720 $ 10,760 (1) Includes $2.8 million of discontinued operations.
Schedule of Maturity Analysis of Finance Lease Liability	The following table presents a maturity analysis of the Company’s lease liability by lease classification at March 31, 2020: (In thousands) Operating Leases Finance Leases 2020 $ 9,923 $ 765 2021 12,427 1,031 2022 11,370 1,031 2023 9,354 1,037 2024 7,909 1,037 Thereafter 40,984 10,260 Total undiscounted lease payments (1) 91,967 15,161 Less amounts representing interest (1) (14,247 ) (4,401 ) Lease liability (1) $ 77,720 $ 10,760 (1) Includes $2.8 million of discontinued operations.

CAPITAL RATIOS AND SHAREHOLDE_2

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY (Tables)	3 Months Ended
	Mar. 31, 2020
Stockholders' Equity Note [Abstract]
Schedule of Actual and Required Capital Ratios	The actual and required capital ratios were as follows: March 31, Regulatory December 31, Regulatory Company (consolidated) Total capital to risk weighted assets 13.8 % N/A 13.7 % N/A Common equity tier 1 capital to risk weighted assets 11.9 N/A 12.1 N/A Tier 1 capital to risk weighted assets 12.1 N/A 12.3 N/A Tier 1 capital to average assets 9.3 N/A 9.3 N/A Bank Total capital to risk weighted assets 12.5 % 10.0 % 12.8 % 10.0 % Common equity tier 1 capital to risk weighted assets 11.7 6.5 12.2 6.5 Tier 1 capital to risk weighted assets 11.7 8.0 12.2 8.0 Tier 1 capital to average assets 8.9 5.0 9.1 5.0
Schedule of Components of Accumulated Other Comprehensive Income	Components of accumulated other comprehensive income is as follows: (In thousands) March 31, December 31, Other accumulated comprehensive income, before tax: Net unrealized holding gain on AFS securities $ 44,877 $ 19,263 Net unrealized holding (loss) on pension plans (3,023 ) (3,023 ) Income taxes related to items of accumulated other comprehensive income: Net unrealized tax (expense) on AFS securities (11,649 ) (5,059 ) Net unrealized tax benefit on pension plans 812 812 Accumulated other comprehensive income $ 31,017 $ 11,993
Schedule of Components of Other Comprehensive Income	The following table presents the components of other comprehensive income for the three months ended March 31, 2020 and 2019 : (In thousands) Before Tax Tax Effect Net of Tax Three Months Ended March 31 , 2020 Net unrealized holding gain on AFS securities: x Net unrealized gains arising during the period $ 25,613 $ (6,590 ) $ 19,023 Less: reclassification adjustment for (losses) realized in net income (1 ) — (1 ) Net unrealized holding gain on AFS securities 25,614 (6,590 ) 19,024 Other comprehensive income $ 25,614 $ (6,590 ) $ 19,024 Three Months Ended March 31 , 2019 Net unrealized holding gain on AFS securities: Net unrealized gains arising during the period $ 14,221 $ (3,653 ) $ 10,568 Less: reclassification adjustment for gains realized in net income 6 (2 ) 4 Net unrealized holding gain on AFS securities 14,215 (3,651 ) 10,564 Other comprehensive income $ 14,215 $ (3,651 ) $ 10,564
Schedule of Gross Changes in Each Component of Accumulated Other Comprehensive Income	The following table presents the changes in each component of accumulated other comprehensive income, for the three ended March 31, 2020 and 2019 : (In thousands) Net unrealized holding loss on AFS Securities Net unrealized holding loss on pension plans Total Three Months Ended March 31, 2020 Balance at Beginning of Period $ 14,204 $ (2,211 ) $ 11,993 Other comprehensive income before reclassifications 19,023 — 19,023 Less: amounts reclassified from accumulated other comprehensive income (loss) (1 ) — (1 ) Total other comprehensive income 19,024 — 19,024 Balance at End of Period $ 33,228 $ (2,211 ) $ 31,017 Three Months Ended March 31, 2019 Balance at Beginning of Period $ (11,453 ) $ (2,017 ) $ (13,470 ) Other comprehensive (loss) before reclassifications 10,568 — 10,568 Less: amounts reclassified from accumulated other comprehensive income (loss) 4 — 4 Total other comprehensive (loss) 10,564 — 10,564 Balance at End of Period $ (889 ) $ (2,017 ) $ (2,906 )
Schedule of Amounts Reclassified Out of Each Component of Accumulated Other Comprehensive Income	The following table presents the amounts reclassified out of each component of accumulated other comprehensive income for the three ended March 31, 2020 and 2019 : Affected Line Item in the Three Months Ended March 31, Statement where Net Income (In thousands) 2020 2019 is Presented Realized gains on AFS securities: $ (1 ) $ 6 Non-interest income — (2 ) Tax expense (1 ) 4 Net of tax Total reclassifications for the period $ (1 ) $ 4 Net of tax

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	3 Months Ended
	Mar. 31, 2020
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	Earnings per share have been computed based on the following (average diluted shares outstanding are calculated using the treasury stock method): Three Months Ended March 31, (In thousands, except per share data) 2020 2019 Income from continuing operations $ (12,072 ) $ 24,272 Income from discontinued operations (7,798 ) (637 ) Net income $ (19,870 ) $ 23,635 Average number of common shares issued 51,903 46,212 Less: average number of treasury shares 1,744 717 Less: average number of unvested stock award shares 488 425 Plus: average participating preferred shares 533 1,043 Average number of basic shares outstanding 50,204 46,113 Plus: dilutive effect of unvested stock award shares — 135 Plus: dilutive effect of stock options outstanding — 13 Average number of diluted shares outstanding 50,204 46,261 Basic earnings per common share: Continuing operations $ (0.24 ) $ 0.52 Discontinued operations (0.16 ) (0.01 ) Total $ (0.40 ) $ 0.51 Diluted earnings per common share: Continuing operations $ (0.24 ) $ 0.52 Discontinued operations (0.16 ) (0.01 ) Total $ (0.40 ) $ 0.51

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS (Tables)	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Summary of Activity in the Stock Award and Stock Option Plans	A combined summary of activity in the Company’s stock award and stock option plans for the three months ended March 31, 2020 is presented in the following table: Non-Vested Stock Awards Outstanding Stock Options Outstanding (Shares in thousands) Number of Shares Weighted-Average Grant Date Fair Value Number of Shares Weighted-Average Exercise Price December 31, 2019 450 $ 32.47 153 $ 22.00 Granted 108 29.09 — — Acquired — — — — Stock options exercised — — (24 ) 21.48 Stock awards vested (53 ) 33.40 — — Forfeited (11 ) 34.14 — — Expired — — — — March 31, 2020 494 $ 31.42 129 $ 22.09 Exercisable options at March 31, 2020 129 $ 22.09

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	3 Months Ended
	Mar. 31, 2020
Fair Value Disclosures [Abstract]
Summary of Financial Assets and Financial Liabilities Measured at Fair Value on a Recurring Basis Segregated by the Level of the Valuation Inputs Within the Fair Value Hierarchy Utilized to Measure Fair Value	The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of March 31, 2020 and December 31, 2019 , segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value. March 31, 2020 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading security $ — $ — $ 9,829 $ 9,829 Securities available for sale: Municipal bonds and obligations — 114,071 — 114,071 Agency collateralized mortgage obligations — 801,184 — 801,184 Agency residential mortgage-backed securities — 143,328 — 143,328 Agency commercial mortgage-backed securities — 194,721 — 194,721 Corporate bonds — 59,785 34,504 94,289 Trust preferred securities — 5,492 — 5,492 Other bonds and obligations — 50,773 — 50,773 Marketable equity securities 31,612 671 — 32,283 Loans held for investment at fair value — — 4,895 4,895 Loans held for sale (1) — 129,975 — 129,975 Derivative assets (1) — 177,708 4,836 182,544 Capitalized servicing rights (1) — — 8,518 8,518 Derivative liabilities (1) 4,490 74,511 — 79,001 (1) Includes assets and liabilities classified as discontinued operations. December 31, 2019 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading security $ — $ — $ 10,769 $ 10,769 Securities available for sale: Municipal bonds and obligations — 110,138 — 110,138 Agency collateralized mortgage obligations — 748,812 — 748,812 Agency residential mortgage-backed securities — 147,744 — 147,744 Agency commercial mortgage-backed securities — 147,096 — 147,096 Corporate bonds — 73,610 42,966 116,576 Other bonds and obligations — 41,189 — 41,189 Marketable equity securities 40,499 1,057 — 41,556 Loans held for investment at fair value — — — — Loans held for sale (1) — 140,280 — 140,280 Derivative assets (1) — 77,562 2,628 80,190 Capitalized servicing rights (1) — — 12,229 12,229 Derivative liabilities (1) 227 80,454 — 80,681 (1) Includes assets and liabilities classified as discontinued operations.
Schedule of Loans Held for Sale	Aggregate Fair Value March 31, 2020 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 4,895 $ 71,740 $ (66,845 ) Loans Held for Sale. The Company elected the fair value option for all loans held for sale (HFS) originated for sale on or after May 1, 2012. Loans HFS are classified as Level 2 as the fair value is based on input factors such as quoted prices for similar loans in active markets. Aggregate Fair Value March 31, 2020 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale - continuing operations $ 4,252 $ 4,161 $ 91 Loans held for sale - discontinued operations 125,723 122,163 3,560 Total loans held for sale $ 129,975 $ 126,324 $ 3,651 Aggregate Fair Value December 31, 2019 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale - continuing operations $ 7,625 $ 7,485 $ 140 Loans held for sale - discontinued operations 132,655 129,622 3,033 Total loans held for sale $ 140,280 $ 137,107 $ 3,173
Schedule of Changes in Level 3 Assets and Liabilities That Were Measured at Fair Value on a Recurring Basis	The table below presents the changes in Level 3 assets and liabilities that were measured at fair value on a recurring basis for the three months ended March 31, 2020 and 2019 . Assets (Liabilities) Securities Loans Capitalized Trading Available Held for Commitments Servicing (In thousands) Security for Sale Investment to Lend (1) Rights (1) Three Months Ended March 31, 2020 December 31, 2019 $ 10,769 $ 42,966 $ — $ 2,628 $ 12,299 Adoption of ASC 326 — — 7,660 — — Maturity of AFS security — (9,000 ) — — — Unrealized (loss), net recognized in other non-interest income (759 ) — (2,216 ) — — Unrealized gain included in accumulated other comprehensive income — 538 — — — Unrealized gain/(loss), net recognized in discontinued operations — — — 11,039 (3,781 ) Paydown of asset (181 ) — (549 ) — — Transfers to held for sale loans — — — (8,831 ) — Additions to servicing rights — — — — — March 31, 2020 $ 9,829 $ 34,504 $ 4,895 $ 4,836 $ 8,518 Unrealized gains relating to instruments still held at March 31, 2020 $ 620 $ 151 $ — $ 4,836 $ — Securities Loans Capitalized Trading Available Held for Commitments Servicing (In thousands) Security for Sale Investment to Lend (1) Rights (1) Three Months Ended March 31, 2019 December 31, 2018 $ 11,212 $ — $ — $ 3,927 $ 11,485 Unrealized gain, net recognized in other non-interest income 126 — — — — Unrealized gain/(loss), net recognized in discontinued operations — — — 11,221 (1,142 ) Paydown of trading security (174 ) — — — — Transfers to held for sale loans — — — (8,830 ) — Additions to servicing rights — — — — 1,008 March 31, 2019 $ 11,164 $ — $ — $ 6,318 $ 11,351 Unrealized gains relating to instruments still held at March 31, 2019 $ 1,248 $ — $ — $ 6,318 $ — (1) Classified as assets from discontinued operations on the consolidated balance sheets.
Schedule of Quantitative Information About the Significant Unobservable Inputs Within Level 3	Quantitative information about the significant unobservable inputs within Level 3 recurring assets and liabilities is as follows: Fair Value Significant Unobservable Input (In thousands) March 31, 2020 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading security $ 9,829 Discounted Cash Flow Discount Rate 1.02 % AFS Securities 34,504 Indication from Market Maker Price 94.00 - 96.00% Loan held for investment 4,895 Discounted Cash Flow Discount Rate 30.00 % Collateral Value $7.9 - $31.1 Commitments to lend (1) 4,836 Historical Trend Closing Ratio 80.22 % Pricing Model Origination Costs, per loan $ 3,137 Capitalized servicing rights (1) 8,518 Discounted cash flow Constant Prepayment Rate (CPR) 23.99 % Discount Rate 10.21 % Total $ 62,582 (1) Classified as assets from discontinued operations on the consolidated balance sheets. Fair Value Significant Unobservable Input (In thousands) December 31, 2019 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading security $ 10,769 Discounted Cash Flow Discount Rate 2.21 % AFS Securities 42,966 Indication from Market Maker Price 97.00 - 100.00 Commitments to lend (1) 2,628 Historical Trend Closing Ratio 77.81 % Pricing Model Origination Costs, per loan $ 3,137 Capitalized servicing rights (1) 12,299 Discounted Cash Flow Constant Prepayment Rate (CPR) 11.50 % Discount Rate 10.00 % Total $ 68,662 (1) Classified as assets from discontinued operations on the consolidated balance sheets. March 31, 2020 December 31, 2019 Fair Value Measurement Date as of March 31, 2020 Level 3 Level 3 Level 3 (In thousands) Inputs Inputs Inputs Assets Individually evaluated loans $ 15,586 $ 8,831 March 2020 Capitalized servicing rights 13,720 14,152 March 2020 Other real estate owned 224 — March 2020 Total $ 29,530 $ 22,983
Summary of Applicable Non-Recurring Fair Value Measurements	Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets is as follows: Fair Value (In thousands) March 31, 2020 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Individually evaluated loans $ 15,586 Fair Value of Collateral Discounted Cash Flow - Loss Severity 14.41% to 23.83% (3.34%) Appraised Value $6.2 to $1,347 ($658) Capitalized servicing rights 13,720 Discounted Cash Flow Constant Prepayment Rate (CPR) 10.20% to 14.84% (13.96%) Discount Rate 10.00% to 12.30% (11.37%) Other Real Estate Owned 224 Fair Value of Collateral Appraised Value $40 to $120 ($90) Total $ 29,530 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties. Fair Value (In thousands) December 31, 2019 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Impaired Loans $ 8,831 Fair Value of Collateral Discounted Cash Flow - loss severity 15.72% to 0.12% (4.50%) Appraised Value $8.2 to $1,548 ($736.1) Capitalized servicing rights 14,152 Discounted Cash Flow Constant Prepayment Rate (CPR) 9.44% to 14.12% (12.25%) Discount Rate 10.00% to 13.50% (11.78%) Other Real Estate Owned — Fair Value of Collateral Appraised Value — Total $ 22,983 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individuals properties.
Summary of Estimated Fair Values, and Related Carrying Amounts, of Financial Instruments	The following tables summarize the estimated fair values (represents exit price), and related carrying amounts, of the Company’s financial instruments. Certain financial instruments and all non-financial instruments are excluded. Accordingly, the aggregate fair value amounts presented may not necessarily represent the underlying fair value of the Company. Certain assets and liabilities in the following disclosures include balances classified as discontinued operations. See Note 2 - Discontinued Operations for more information on these assets and liabilities. March 31, 2020 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 605,420 $ 605,420 $ 605,420 $ — $ — Trading security 9,829 9,829 — — 9,829 Marketable equity securities 32,283 32,283 31,612 671 — Securities available for sale 1,403,858 1,403,858 — 1,369,354 34,504 Securities held to maturity 336,802 358,416 — 354,657 3,759 FHLB bank stock and restricted securities 54,306 N/A N/A N/A N/A Net loans 9,189,667 9,469,947 — — 9,469,947 Loans held for sale (1) 129,975 129,975 — 129,975 — Accrued interest receivable 35,427 35,427 — 35,427 — Derivative assets (1) 182,544 182,544 — 177,708 4,836 Financial Liabilities Total deposits $ 10,071,675 $ 10,080,250 $ — $ 10,080,250 $ — Short-term debt 225,000 225,866 — 225,866 — Long-term Federal Home Loan Bank advances 719,053 727,150 — 727,150 — Subordinated borrowings 97,107 89,521 — 89,521 — Derivative liabilities (1) 79,001 79,001 4,490 74,511 — (1) Includes assets and liabilities classified as discontinued operations. December 31, 2019 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 579,829 $ 579,829 $ 579,829 $ — $ — Trading security 10,769 10,769 — — 10,769 Marketable equity securities 41,556 41,555 40,499 1,056 — Securities available for sale and other 1,311,555 1,311,555 — 1,267,573 43,982 Securities held to maturity 357,979 373,277 — 355,513 17,764 FHLB bank stock and restricted securities 48,019 N/A N/A N/A N/A Net loans 9,438,853 9,653,550 — — 9,653,550 Loans held for sale (1) 169,319 169,319 — 140,280 29,039 Accrued interest receivable 36,462 36,462 — 36,462 — Derivative assets (1) 80,190 80,190 — 77,562 2,628 Financial Liabilities Total deposits $ 10,335,977 $ 10,338,993 $ — $ 10,338,993 $ — Short-term debt 125,000 125,081 — 125,081 — Long-term Federal Home Loan Bank advances 605,501 606,381 — 606,381 — Subordinated borrowings 97,049 101,055 — 101,055 — Derivative liabilities (1) 80,681 80,681 227 80,454 — (1) Includes assets and liabilities classified as discontinued operations.

NET INTEREST INCOME AFTER PRO_2

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES (Tables)	3 Months Ended
	Mar. 31, 2020
Banking and Thrift, Interest [Abstract]
Schedule of Net Interest Income After Provision for Loan Losses	Presented below is net interest income after provision for credit losses for the three months ended March 31, 2020 and 2019, respectively. Three Months Ended March 31, (In thousands) 2020 2019 Net interest income from continuing operations $ 86,428 $ 85,459 Provision for credit losses 34,807 4,001 Net interest income from continuing operations after provision for credit losses $ 51,621 $ 81,458

BASIS OF PRESENTATION - Additio

BASIS OF PRESENTATION - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance	$ 113,510	$ 63,575	$ 63,575
Unfunded loan commitments	8,423		100
Retained earnings	304,442		361,082
Deferred tax assets, net			51,165
Allowance for credit losses on securities	$ 141		0
Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance			$ 63,575
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance		25,434
Unfunded loan commitments		7,993
Fair value option		(15,291)
Retained earnings		(24,380)
Deferred tax assets, net		8,993
Allowance for credit losses on securities		309
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance		25,434
Unfunded loan commitments		8,000
Retained earnings		(24,400)
Deferred tax assets, net		9,000
Allowance for credit losses on securities		300
Noncredit discount, amount		3,200
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Financial Asset Acquired with Credit Deterioration
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total allowance		15,300
Allowance for credit loss, confirmed losses		11,900
Taxi Medallion Portfolio Segment | Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Fair value option		$ (15,300)

BASIS OF PRESENTATION - Impact

BASIS OF PRESENTATION - Impact of Adoption (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans	$ 9,303,177	$ 9,502,428	$ 9,502,428
Less: Allowance for credit losses on loans	113,510	63,575	63,575
Allowance for credit losses on securities	141		0
Deferred tax assets, net			51,165
Other liabilities (ACL unfunded loan commitments)	8,423		100
Retained earnings	$ 304,442		$ 361,082
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans		35
PCD gross up		15,326
Fair value option		(15,291)
Less: Allowance for credit losses on loans		25,434
Allowance for credit losses on securities		309
Deferred tax assets, net		8,993
Other liabilities (ACL unfunded loan commitments)		7,993
Retained earnings		(24,380)
Cumulative Effect, Period of Adoption, Adjusted Balance
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total loans		9,502,463
PCD gross up		15,326
Fair value option		(15,291)
Less: Allowance for credit losses on loans		89,009
Allowance for credit losses on securities		309
Deferred tax assets, net		60,158
Other liabilities (ACL unfunded loan commitments)		8,093
Retained earnings		$ 336,702

DISCONTINUED OPERATIONS - Narra

DISCONTINUED OPERATIONS - Narrative (Details)	3 Months Ended
	Mar. 31, 2019
First Choice Loan Services, Inc. | Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Timing of disposal, term	12 months

DISCONTINUED OPERATIONS - Asset

DISCONTINUED OPERATIONS - Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Total assets	$ 140,064	$ 154,132
Liabilities
Total liabilities	30,554	26,481
First Choice Loan Services, Inc. | Discontinued Operations, Held-for-sale
Assets
Loans held for sale, at fair value	125,723	132,655
Premises and equipment, net	682	1,073
Mortgage servicing rights, at fair value	8,518	12,299
Mortgage banking derivatives	(332)	2,329
Right-of-use asset	2,743	3,462
Other assets	2,730	2,314
Total assets	140,064	154,132
Liabilities
Customer payments in process	21,241	15,372
Lease liability	2,767	3,494
Other liabilities	6,546	7,615
Total liabilities	$ 30,554	$ 26,481

DISCONTINUED OPERATIONS - Resul

DISCONTINUED OPERATIONS - Results of Discontinued Operation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) from discontinued operations before income taxes	$ (10,629)	$ (854)
Income tax expense	(2,831)	(217)
Net (loss) from discontinued operations	(7,798)	(637)
First Choice Loan Services, Inc. | Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Interest income	729	1,044
Interest expense	282	584
Net interest income	447	460
Non-interest income	1,358	8,813
Total net revenue	1,805	9,273
Non-interest expense	12,434	10,127
(Loss) from discontinued operations before income taxes	(10,629)	(854)
Income tax expense	(2,831)	(217)
Net (loss) from discontinued operations	$ (7,798)	$ (637)

TRADING SECURITY (Details)

TRADING SECURITY (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Amortized cost	$ 9,200	$ 9,400
Trading security, at fair value	$ 9,829	$ 10,769

SECURITIES AVAILABLE FOR SALE_3

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES - Summary of Securities Available for Sale and Held to Maturity (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Securities available for sale
Amortized Cost	$ 1,363,702	$ 1,297,339
Gross Unrealized Gains	44,677	16,503
Gross Unrealized Losses	(4,521)	(2,287)
Securities available for sale, at fair value	1,403,858	1,311,555
Allowance	0	0
Securities held to maturity
Amortized Cost	336,802	357,979
Gross Unrealized Gains	21,693	16,263
Gross Unrealized Losses	(79)	(965)
Fair Value	358,416	373,277
Allowance	(141)	0
Marketable equity securities, amortized cost	34,288	37,138
Marketable equity securities, gross unrealized gains	1,912	5,147
Marketable equity securities, gross unrealized losses	(3,917)	(729)
Marketable equity securities, fair value	32,283	41,556
Total, amortized cost basis	1,734,792	1,692,456
Total, gross unrealized gain	68,282	37,913
Total, gross unrealized loss	(8,517)	(3,981)
Total, fair value	1,794,557	1,726,388
Total, Allowance	(141)	0
Municipal bonds and obligations
Securities available for sale
Amortized Cost	108,279	104,325
Gross Unrealized Gains	5,936	5,813
Gross Unrealized Losses	(144)	0
Securities available for sale, at fair value	114,071	110,138
Allowance	0	0
Securities held to maturity
Amortized Cost	247,211	252,936
Gross Unrealized Gains	14,288	13,095
Gross Unrealized Losses	0	(5)
Fair Value	261,499	266,026
Allowance	(83)	0
Agency collateralized mortgage obligations
Securities available for sale
Amortized Cost	774,281	742,550
Gross Unrealized Gains	26,903	6,431
Gross Unrealized Losses	0	(169)
Securities available for sale, at fair value	801,184	748,812
Allowance	0	0
Securities held to maturity
Amortized Cost	69,050	69,667
Gross Unrealized Gains	6,582	2,870
Gross Unrealized Losses	0	(50)
Fair Value	75,632	72,487
Allowance	0	0
Agency mortgage-backed securities
Securities available for sale
Amortized Cost	139,149	146,589
Gross Unrealized Gains	4,273	1,515
Gross Unrealized Losses	(94)	(360)
Securities available for sale, at fair value	143,328	147,744
Allowance	0	0
Securities held to maturity
Amortized Cost	6,070	6,271
Gross Unrealized Gains	185	29
Gross Unrealized Losses	0	0
Fair Value	6,255	6,300
Allowance	0	0
Agency commercial mortgage-backed securities
Securities available for sale
Amortized Cost	189,253	148,066
Gross Unrealized Gains	6,178	176
Gross Unrealized Losses	(710)	(1,146)
Securities available for sale, at fair value	194,721	147,096
Allowance	0	0
Securities held to maturity
Amortized Cost	10,337	10,353
Gross Unrealized Gains	638	51
Gross Unrealized Losses	0	0
Fair Value	10,975	10,404
Allowance	0	0
Corporate bonds
Securities available for sale
Amortized Cost	97,125	115,395
Gross Unrealized Gains	207	1,788
Gross Unrealized Losses	(3,043)	(607)
Securities available for sale, at fair value	94,289	116,576
Allowance	0	0
Trust preferred securities
Securities available for sale
Amortized Cost	5,987
Gross Unrealized Gains	29
Gross Unrealized Losses	(524)
Securities available for sale, at fair value	5,492
Tax advantaged economic development bonds
Securities held to maturity
Amortized Cost	3,838	18,456
Gross Unrealized Gains	0	218
Gross Unrealized Losses	(79)	(910)
Fair Value	3,759	17,764
Allowance	(58)	0
Other bonds and obligations
Securities available for sale
Amortized Cost	49,628	40,414
Gross Unrealized Gains	1,151	780
Gross Unrealized Losses	(6)	(5)
Securities available for sale, at fair value	50,773	41,189
Allowance	0	0
Securities held to maturity
Amortized Cost	296	296
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	296	296
Allowance	$ 0	$ 0

SECURITIES AVAILABLE FOR SALE_4

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES - Debt Securities, Held to Maturity, Allowance for Credit Losses Rollforward (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Balance at beginning of period	$ 0
Provision for credit losses- reversal	168
Balance at end of period	(141)
Municipal bonds and obligations
Schedule of Held-to-maturity Securities [Line Items]
Balance at beginning of period	0
Provision for credit losses- reversal	0
Balance at end of period	(83)
Tax advantaged economic development bonds
Schedule of Held-to-maturity Securities [Line Items]
Balance at beginning of period	0
Provision for credit losses- reversal	168
Balance at end of period	$ (58)

SECURITIES AVAILABLE FOR SALE_5

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES - Schedule of Maturity of Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available for sale, Amortized Cost
Within 1 year	$ 43,509
Over 1 year to 5 years	16,655
Over 5 years to 10 years	78,121
Over 10 years	122,734
Total bonds and obligations	261,019
Mortgage-backed securities	1,102,683
Amortized Cost	1,363,702	$ 1,297,339
Available for sale, Fair Value
Within 1 year	43,660
Over 1 year to 5 years	16,466
Over 5 years to 10 years	78,061
Over 10 years	126,438
Total bonds and obligations	264,625
Mortgage-backed securities	1,139,233
Fair Value	1,403,858	1,311,555
Held to maturity, Amortized Cost
Within 1 year	1,614
Over 1 year to 5 years	6,033
Over 5 years to 10 years	19,522
Over 10 years	224,176
Total bonds and obligations	251,345
Mortgage-backed securities	85,457
Amortized Cost	336,802	357,979
Held to maturity, Fair Value
Within 1 year	1,614
Over 1 year to 5 years	6,043
Over 5 years to 10 years	19,940
Over 10 years	237,957
Total bonds and obligations	265,554
Mortgage-backed securities	92,862
Fair Value	$ 358,416	$ 373,277

SECURITIES AVAILABLE FOR SALE_6

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES - Narrative (Details)	3 Months Ended
	Mar. 31, 2020USD ($)security	Mar. 31, 2019USD ($)
Investment Holdings [Line Items]
Purchases of securities available for sale | $	$ 160,925,000	$ 15,180,000
Proceeds from sale of available-for-sale securities | $	3,520,000	2,587,000
Debt securities, available-for-sale, realized gain | $	0	6,000
Debt securities, available-for-sale, realized loss | $	$ 1,000	$ 0
Agency collateralized mortgage obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	2
Available for sale securities portfolio, number of securities	253
Available for sale securities, continuous unrealized loss position, aggregate losses	0.50%
Municipal bonds and obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	3
Available for sale securities portfolio, number of securities	202
Available for sale securities, continuous unrealized loss position, aggregate losses	3.00%
Mortgage-backed securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	17
Available for sale securities portfolio, number of securities	112
Available for sale securities, continuous unrealized loss position, aggregate losses	5.00%
Corporate bonds
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	14
Available for sale securities portfolio, number of securities	20
Available for sale securities, continuous unrealized loss position, aggregate losses	2.10%
Other bonds and obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	3
Available for sale securities portfolio, number of securities	8
Available for sale securities, continuous unrealized loss position, aggregate losses	0.50%
Trust preferred securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	1
Available for sale securities portfolio, number of securities	2
Available for sale securities, continuous unrealized loss position, aggregate losses	10.70%
Tax advantaged economic development bonds
Investment Holdings [Line Items]
Held-to-maturity, securities in unrealized loss positions	3
Held-to-maturity securities portfolio, number of securities	3
Held to maturity securities, continuous unrealized loss position, aggregate losses	2.10%

SECURITIES AVAILABLE FOR SALE_7

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES - Summary of Securities with Unrealized Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt securities, available for sale securities, less than twelve months, gross unrealized losses	$ 2,815	$ 1,287
Debt securities, available for sale securities, over twelve months, gross unrealized losses	1,706	1,000
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	4,521	2,287
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]
Debt securities, available for sale securities, continuous unrealized loss position, less than twelve months, fair value	85,323	180,826
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	25,371	83,773
Debt securities, available for sale securities, continuous unrealized loss position, fair value	110,694	264,599
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Held-to-maturity securities, continuous unrealized loss position, less than twelve months, accumulated loss	79	55
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	910
Held to maturity securities, accumulated unrecognized holding loss	79	965
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held to maturity securities, accumulated unrecognized holding loss, less than twelve months, fair value	3,759	10,578
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	6,925
Held to maturity securities, accumulated unrecognized holding loss, fair value	3,759	17,503
Securities available for sale and held to maturity
Held to maturity and available for sale securities continuous unrealized loss position, less than twelve months, aggregate losses	2,894	1,342
Held to maturity and available for sale securities continuous unrealized loss position, less than twelve months, fair value	89,082	191,404
Held to maturity and available for sale securities continuous unrealized loss position, over twelve months, aggregate losses	1,706	1,910
Held to maturity and available for sale securities continuous unrealized loss position, over twelve months, fair value	25,371	90,698
Held to maturity and available for sale securities continuous unrealized loss position, aggregate losses	4,600	3,252
Held to maturity and available for sale securities continuous unrealized loss position, fair value	114,453	282,102
Municipal bonds and obligations
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt securities, available for sale securities, less than twelve months, gross unrealized losses	144
Debt securities, available for sale securities, over twelve months, gross unrealized losses	0
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	144
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]
Debt securities, available for sale securities, continuous unrealized loss position, less than twelve months, fair value	4,608
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	0
Debt securities, available for sale securities, continuous unrealized loss position, fair value	4,608
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Held-to-maturity securities, continuous unrealized loss position, less than twelve months, accumulated loss		5
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses		0
Held to maturity securities, accumulated unrecognized holding loss		5
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held to maturity securities, accumulated unrecognized holding loss, less than twelve months, fair value		800
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value		0
Held to maturity securities, accumulated unrecognized holding loss, fair value		800
Agency collateralized mortgage obligations
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt securities, available for sale securities, less than twelve months, gross unrealized losses		127
Debt securities, available for sale securities, over twelve months, gross unrealized losses		42
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss		169
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]
Debt securities, available for sale securities, continuous unrealized loss position, less than twelve months, fair value		52,623
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value		6,267
Debt securities, available for sale securities, continuous unrealized loss position, fair value		58,890
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Held-to-maturity securities, continuous unrealized loss position, less than twelve months, accumulated loss		50
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses		0
Held to maturity securities, accumulated unrecognized holding loss		50
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held to maturity securities, accumulated unrecognized holding loss, less than twelve months, fair value		9,778
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value		0
Held to maturity securities, accumulated unrecognized holding loss, fair value		9,778
Agency mortgage-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt securities, available for sale securities, less than twelve months, gross unrealized losses	84	59
Debt securities, available for sale securities, over twelve months, gross unrealized losses	10	301
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	94	360
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]
Debt securities, available for sale securities, continuous unrealized loss position, less than twelve months, fair value	5,750	10,640
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	315	23,404
Debt securities, available for sale securities, continuous unrealized loss position, fair value	6,065	34,044
Agency commercial mortgage-backed securities
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt securities, available for sale securities, less than twelve months, gross unrealized losses	710	1,097
Debt securities, available for sale securities, over twelve months, gross unrealized losses	0	49
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	710	1,146
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]
Debt securities, available for sale securities, continuous unrealized loss position, less than twelve months, fair value	9,324	116,324
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	0	11,250
Debt securities, available for sale securities, continuous unrealized loss position, fair value	9,324	127,574
Corporate bonds
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt securities, available for sale securities, less than twelve months, gross unrealized losses	1,348	0
Debt securities, available for sale securities, over twelve months, gross unrealized losses	1,695	607
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	3,043	607
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]
Debt securities, available for sale securities, continuous unrealized loss position, less than twelve months, fair value	60,156	0
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	25,029	42,823
Debt securities, available for sale securities, continuous unrealized loss position, fair value	85,185	42,823
Trust preferred securities
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt securities, available for sale securities, less than twelve months, gross unrealized losses	524
Debt securities, available for sale securities, over twelve months, gross unrealized losses	0
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	524
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]
Debt securities, available for sale securities, continuous unrealized loss position, less than twelve months, fair value	4,361
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	0
Debt securities, available for sale securities, continuous unrealized loss position, fair value	4,361
Other bonds and obligations
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt securities, available for sale securities, less than twelve months, gross unrealized losses	5	4
Debt securities, available for sale securities, over twelve months, gross unrealized losses	1	1
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	6	5
Debt Securities, Available-for-sale, Unrealized Loss Position [Abstract]
Debt securities, available for sale securities, continuous unrealized loss position, less than twelve months, fair value	1,124	1,239
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	27	29
Debt securities, available for sale securities, continuous unrealized loss position, fair value	1,151	1,268
Tax advantaged economic development bonds
Debt Securities, Held-to-maturity, Unrealized Loss Position, Accumulated Loss [Abstract]
Held-to-maturity securities, continuous unrealized loss position, less than twelve months, accumulated loss	79	0
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	910
Held to maturity securities, accumulated unrecognized holding loss	79	910
Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position, Fair Value [Abstract]
Held to maturity securities, accumulated unrecognized holding loss, less than twelve months, fair value	3,759	0
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	6,925
Held to maturity securities, accumulated unrecognized holding loss, fair value	$ 3,759	$ 6,925

LOANS AND ALLOWANCE FOR CREDI_3

LOANS AND ALLOWANCE FOR CREDIT LOSSES Impact of Adoption (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 9,303,177	$ 9,502,428	$ 9,502,428
Total allowance	113,510	63,575	63,575
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			4,034,269
Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			429,806
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	624,705	673,308
Total allowance	11,607		4,880
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,212,816	2,189,780
Total allowance	28,863		16,344
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,486,054	1,522,059	1,840,508
Total allowance	19,837		17,243
Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	319,809	321,624
Total allowance	4,665		2,856
Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			5,874,777
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	463,803	448,452
Total allowance	4,573		2,713
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	606,257	631,740
Total allowance	4,453		4,413
Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,685,472
Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			8,119
Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,766,707	2,853,385
Total allowance	26,057		9,970
Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			942,179
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	377,135	378,793	380,591
Total allowance	7,780		1,470
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	445,891	483,287
Total allowance	$ 5,675		3,686
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		35
Total allowance		25,434
Cumulative Effect, Period of Adoption, Adjustment | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		6,062
Cumulative Effect, Period of Adoption, Adjustment | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		11,201
Cumulative Effect, Period of Adoption, Adjustment | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		(2,696)
Cumulative Effect, Period of Adoption, Adjustment | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		507
Cumulative Effect, Period of Adoption, Adjustment | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		(342)
Cumulative Effect, Period of Adoption, Adjustment | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		(1,842)
Cumulative Effect, Period of Adoption, Adjustment | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		6,799
Cumulative Effect, Period of Adoption, Adjustment | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		4,884
Cumulative Effect, Period of Adoption, Adjustment | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		861
Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		9,502,463
Total allowance		89,009
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		10,942
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		27,545
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		14,547
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		3,363
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		2,371
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		2,571
Cumulative Effect, Period of Adoption, Adjusted Balance | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		16,769
Cumulative Effect, Period of Adoption, Adjusted Balance | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		6,354
Cumulative Effect, Period of Adoption, Adjusted Balance | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total allowance		4,547
Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			9,502,428
Total allowance			63,575
Accounting Standards Update 2016-13 | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			673,308
Total allowance			4,880
Accounting Standards Update 2016-13 | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,189,780
Total allowance			16,344
Accounting Standards Update 2016-13 | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			1,522,059
Total allowance			17,243
Accounting Standards Update 2016-13 | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			321,624
Total allowance			2,856
Accounting Standards Update 2016-13 | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			448,452
Total allowance			2,713
Accounting Standards Update 2016-13 | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			631,740
Total allowance			4,413
Accounting Standards Update 2016-13 | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,853,385
Total allowance			9,970
Accounting Standards Update 2016-13 | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			378,793
Total allowance			1,470
Accounting Standards Update 2016-13 | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			483,287
Total allowance			$ 3,686
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		35
Total allowance		25,434
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		3,185
Total allowance		6,062
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		6,540
Total allowance		11,201
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		(13,372)
Total allowance		(2,696)
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		1,160
Total allowance		507
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		187
Total allowance		(342)
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		252
Total allowance		(1,842)
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		1,868
Total allowance		6,799
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		10
Total allowance		4,884
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjustment | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		205
Total allowance		861
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		9,502,463
Total allowance		89,009
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		676,493
Total allowance		10,942
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		2,196,320
Total allowance		27,545
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		1,508,687
Total allowance		14,547
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		322,784
Total allowance		3,363
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		448,639
Total allowance		2,371
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		631,992
Total allowance		2,571
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjusted Balance | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		2,855,253
Total allowance		16,769
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjusted Balance | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		378,803
Total allowance		6,354
Accounting Standards Update 2016-13 | Cumulative Effect, Period of Adoption, Adjusted Balance | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		483,492
Total allowance		$ 4,547

LOANS AND ALLOWANCE FOR CREDI_4

LOANS AND ALLOWANCE FOR CREDIT LOSSES Summary of Total Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 9,303,177	$ 9,502,428	$ 9,502,428
Less: Allowance for credit losses on loans	113,510	63,575	63,575
Net loans	9,189,667	9,438,853	9,438,853
Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			5,874,777
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	463,803	448,452
Less: Allowance for credit losses on loans	4,573		2,713
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	606,257	631,740
Less: Allowance for credit losses on loans	4,453		4,413
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			4,034,269
Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			429,806
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	624,705	673,308
Less: Allowance for credit losses on loans	11,607		4,880
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,212,816	2,189,780
Less: Allowance for credit losses on loans	28,863		16,344
Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			3,604,463
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,486,054	1,522,059	1,840,508
Less: Allowance for credit losses on loans	19,837		17,243
Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	319,809	321,624
Less: Allowance for credit losses on loans	4,665		2,856
Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,685,472
Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			8,119
Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,766,707	2,853,385
Less: Allowance for credit losses on loans	26,057		9,970
Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,677,353
Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			942,179
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	377,135	378,793	380,591
Less: Allowance for credit losses on loans	7,780		1,470
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	445,891	$ 483,287
Less: Allowance for credit losses on loans	$ 5,675		3,686
Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			7,166,497
Business Activities Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			4,239,573
Business Activities Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,796,956	$ 2,796,956
Business Activities Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			382,014	382,014
Business Activities Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans				2,414,942
Business Activities Loans | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,414,942
Business Activities Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			1,442,617	1,442,617
Business Activities Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,148,458	2,148,458
Business Activities Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			4,641	4,641
Business Activities Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,143,817	2,143,817
Business Activities Loans | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			778,466	778,466
Business Activities Loans | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			273,867	273,867
Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,335,931
Acquired Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			1,635,204
Acquired Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			1,237,313	1,237,313
Acquired Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			47,792	47,792
Acquired Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans				1,189,521
Acquired Loans | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			1,189,521
Acquired Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			397,891	397,891
Acquired Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			537,014	537,014
Acquired Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			3,478	3,478
Acquired Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			533,536	533,536
Acquired Loans | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			163,713	163,713
Acquired Loans | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			$ 106,724	$ 106,724

LOANS AND ALLOWANCE FOR CREDI_5

LOANS AND ALLOWANCE FOR CREDIT LOSSES Allowance for Credit Loss Activity (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 63,575
Charged-off loans	(12,433)
Recoveries	1,959
Provision for Credit Losses	34,975
Balance at End of Period	113,510
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charged-off loans	0
Recoveries	0
Provision for Credit Losses	2,202
Balance at End of Period	4,573
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charged-off loans	0
Recoveries	0
Provision for Credit Losses	1,882
Balance at End of Period	4,453
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charged-off loans	(6,376)
Recoveries	258
Provision for Credit Losses	6,783
Balance at End of Period	11,607
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charged-off loans	(135)
Recoveries	47
Provision for Credit Losses	1,406
Balance at End of Period	28,863
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charged-off loans	(4,428)
Recoveries	1,354
Provision for Credit Losses	8,364
Balance at End of Period	19,837
Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charged-off loans	(488)
Recoveries	48
Provision for Credit Losses	1,742
Balance at End of Period	4,665
Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charged-off loans	(171)
Recoveries	70
Provision for Credit Losses	9,389
Balance at End of Period	26,057
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charged-off loans	(77)
Recoveries	2
Provision for Credit Losses	1,501
Balance at End of Period	7,780
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Charged-off loans	(758)
Recoveries	180
Provision for Credit Losses	1,706
Balance at End of Period	5,675
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	25,434
Cumulative Effect, Period of Adoption, Adjustment | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	(342)
Cumulative Effect, Period of Adoption, Adjustment | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	(1,842)
Cumulative Effect, Period of Adoption, Adjustment | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	6,062
Cumulative Effect, Period of Adoption, Adjustment | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	11,201
Cumulative Effect, Period of Adoption, Adjustment | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	(2,696)
Cumulative Effect, Period of Adoption, Adjustment | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	507
Cumulative Effect, Period of Adoption, Adjustment | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	6,799
Cumulative Effect, Period of Adoption, Adjustment | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	4,884
Cumulative Effect, Period of Adoption, Adjustment | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	861
Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	89,009
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,371
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,571
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	10,942
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	27,545
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	14,547
Cumulative Effect, Period of Adoption, Adjusted Balance | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	3,363
Cumulative Effect, Period of Adoption, Adjusted Balance | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	16,769
Cumulative Effect, Period of Adoption, Adjusted Balance | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	6,354
Cumulative Effect, Period of Adoption, Adjusted Balance | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 4,547

LOANS AND ALLOWANCE FOR CREDI_6

LOANS AND ALLOWANCE FOR CREDIT LOSSES Allowance for Credit Losses Activity, Unfunded Loan Commitments (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Expense for credit losses	$ 330
Balance at end of period	8,423
Cumulative Effect, Period of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	7,993
Cumulative Effect, Period of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 8,093

LOANS AND ALLOWANCE FOR CREDI_7

LOANS AND ALLOWANCE FOR CREDIT LOSSES Loan Risk by Category (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 9,303,177	$ 9,502,428	$ 9,502,428
Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			942,179
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	264
2019	285
2018	4
2017	0
2016	0
Prior	57
Revolving Loans Amortized Cost Basis	376,525
Revolving Loans Converted to Term	0
Total loans	377,135	378,793	380,591
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	3,666
2019	47,915
2018	156,911
2017	109,797
2016	64,999
Prior	51,511
Revolving Loans Amortized Cost Basis	11,092
Revolving Loans Converted to Term	0
Total loans	445,891	483,287
Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			5,874,777
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	4,218
2019	175,665
2018	203,349
2017	57,368
2016	17,680
Prior	5,387
Revolving Loans Amortized Cost Basis	136
Revolving Loans Converted to Term	0
Total loans	463,803	448,452
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	3,427
2019	53,936
2018	98,767
2017	86,801
2016	113,350
Prior	248,914
Revolving Loans Amortized Cost Basis	1,062
Revolving Loans Converted to Term	0
Total loans	606,257	631,740
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			4,034,269
Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			429,806
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	13,229
2019	96,993
2018	128,614
2017	71,707
2016	41,970
Prior	265,675
Revolving Loans Amortized Cost Basis	6,517
Revolving Loans Converted to Term	0
Total loans	624,705	673,308
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	37,904
2019	304,620
2018	401,408
2017	284,850
2016	354,174
Prior	811,424
Revolving Loans Amortized Cost Basis	18,436
Revolving Loans Converted to Term	0
Total loans	2,212,816	2,189,780
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	33,562
2019	142,623
2018	275,243
2017	158,246
2016	66,630
Prior	214,240
Revolving Loans Amortized Cost Basis	595,510
Revolving Loans Converted to Term	0
Total loans	1,486,054	1,522,059	1,840,508
Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	21,873
2019	113,507
2018	94,518
2017	42,562
2016	14,861
Prior	22,183
Revolving Loans Amortized Cost Basis	10,305
Revolving Loans Converted to Term	0
Total loans	319,809	321,624
Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,685,472
Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			8,119
Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	53,634
2019	200,104
2018	573,003
2017	511,260
2016	467,787
Prior	958,520
Revolving Loans Amortized Cost Basis	2,399
Revolving Loans Converted to Term	0
Total loans	2,766,707	$ 2,853,385
Pass | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	4,218
2019	175,665
2018	203,349
2017	57,368
2016	17,680
Prior	3,637
Revolving Loans Amortized Cost Basis	136
Revolving Loans Converted to Term	0
Total loans	462,053
Pass | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	3,427
2019	53,936
2018	98,767
2017	86,801
2016	113,350
Prior	240,457
Revolving Loans Amortized Cost Basis	911
Revolving Loans Converted to Term	0
Total loans	597,649
Pass | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	13,229
2019	96,993
2018	121,157
2017	67,848
2016	37,469
Prior	242,264
Revolving Loans Amortized Cost Basis	4,810
Revolving Loans Converted to Term	0
Total loans	583,770
Pass | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	29,059
2019	304,620
2018	397,618
2017	276,233
2016	351,479
Prior	762,925
Revolving Loans Amortized Cost Basis	18,241
Revolving Loans Converted to Term	0
Total loans	2,140,175
Pass | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	33,562
2019	142,058
2018	253,788
2017	154,409
2016	63,737
Prior	208,174
Revolving Loans Amortized Cost Basis	554,874
Revolving Loans Converted to Term	0
Total loans	1,410,602
Pass | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	21,873
2019	112,378
2018	90,685
2017	41,369
2016	11,316
Prior	19,252
Revolving Loans Amortized Cost Basis	6,132
Revolving Loans Converted to Term	0
Total loans	303,005
Pass | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	53,634
2019	200,007
2018	572,834
2017	510,162
2016	467,010
Prior	943,845
Revolving Loans Amortized Cost Basis	2,389
Revolving Loans Converted to Term	0
Total loans	2,749,881
Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			75,284
Special mention | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total loans	0
Special mention | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total loans	0
Special mention | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	2,132
2017	2,624
2016	2,429
Prior	548
Revolving Loans Amortized Cost Basis	1,657
Revolving Loans Converted to Term	0
Total loans	9,390
Special mention | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	751
2017	0
2016	1,200
Prior	6,002
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total loans	7,953
Special mention | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	60
2018	14,444
2017	1,276
2016	650
Prior	0
Revolving Loans Amortized Cost Basis	28,565
Revolving Loans Converted to Term	0
Total loans	44,995
Special mention | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total loans	0
Special mention | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	0
2017	98
2016	0
Prior	1,382
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total loans	1,480
Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			$ 122,424
Substandard | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	1,750
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total loans	1,750
Substandard | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	8,457
Revolving Loans Amortized Cost Basis	151
Revolving Loans Converted to Term	0
Total loans	8,608
Substandard | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	5,325
2017	1,235
2016	2,072
Prior	22,863
Revolving Loans Amortized Cost Basis	50
Revolving Loans Converted to Term	0
Total loans	31,545
Substandard | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	8,845
2019	0
2018	3,039
2017	8,617
2016	1,495
Prior	42,497
Revolving Loans Amortized Cost Basis	195
Revolving Loans Converted to Term	0
Total loans	64,688
Substandard | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	505
2018	7,011
2017	2,561
2016	2,243
Prior	6,066
Revolving Loans Amortized Cost Basis	11,565
Revolving Loans Converted to Term	0
Total loans	29,951
Substandard | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	1,129
2018	3,833
2017	1,193
2016	3,545
Prior	2,931
Revolving Loans Amortized Cost Basis	4,173
Revolving Loans Converted to Term	0
Total loans	16,804
Substandard | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	97
2018	169
2017	1,000
2016	777
Prior	13,293
Revolving Loans Amortized Cost Basis	10
Revolving Loans Converted to Term	0
Total loans	15,346
Doubtful | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	506
Revolving Loans Converted to Term	0
Total loans	506
Doubtful | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	0
2017	0
2016	0
Prior	0
Revolving Loans Amortized Cost Basis	0
Revolving Loans Converted to Term	0
Total loans	0
Performing | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	264
2019	285
2018	0
2017	0
2016	0
Prior	41
Revolving Loans Amortized Cost Basis	374,221
Revolving Loans Converted to Term	0
Total loans	374,811
Performing | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	3,666
2019	47,684
2018	156,080
2017	108,699
2016	64,219
Prior	51,077
Revolving Loans Amortized Cost Basis	10,966
Revolving Loans Converted to Term	0
Total loans	442,391
Nonperforming | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	0
2018	4
2017	0
2016	0
Prior	16
Revolving Loans Amortized Cost Basis	2,304
Revolving Loans Converted to Term	0
Total loans	2,324
Nonperforming | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
2020	0
2019	231
2018	831
2017	1,098
2016	780
Prior	434
Revolving Loans Amortized Cost Basis	126
Revolving Loans Converted to Term	0
Total loans	$ 3,500

LOANS AND ALLOWANCE FOR CREDI_8

LOANS AND ALLOWANCE FOR CREDIT LOSSES Loans Past Due (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	$ 95,751
Current	9,207,426
Total loans	9,303,177	$ 9,502,428	$ 9,502,428
Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			5,874,777
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	0
Current	463,803
Total loans	463,803	448,452
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	823
Current	605,434
Total loans	606,257	631,740
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			4,034,269
Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			429,806
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	18,718
Current	605,987
Total loans	624,705	673,308
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	16,455
Current	2,196,361
Total loans	2,212,816	2,189,780
Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			3,604,463
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	15,143
Current	1,470,911
Total loans	1,486,054	1,522,059	1,840,508
Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	9,160
Current	310,649
Total loans	319,809	321,624
Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,685,472
Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			8,119
Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	22,597
Current	2,744,110
Total loans	2,766,707	2,853,385
Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			2,677,353
Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			942,179
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	4,915
Current	372,220
Total loans	377,135	378,793	380,591
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	7,940
Current	437,951
Total loans	445,891	$ 483,287
Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			561,588
30-59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	28,047
30-59 Days Past Due | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	0
30-59 Days Past Due | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	20
30-59 Days Past Due | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	6,141
30-59 Days Past Due | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	6,978
30-59 Days Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	1,800
30-59 Days Past Due | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	843
30-59 Days Past Due | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	6,445
30-59 Days Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	2,069
30-59 Days Past Due | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	3,751
60-89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	11,536
60-89 Days Past Due | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	0
60-89 Days Past Due | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	0
60-89 Days Past Due | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	149
60-89 Days Past Due | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	6,868
60-89 Days Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	750
60-89 Days Past Due | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	700
60-89 Days Past Due | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	2,070
60-89 Days Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	318
60-89 Days Past Due | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	681
90 Days or Greater Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	56,168
90 Days or Greater Past Due | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	0
90 Days or Greater Past Due | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	803
90 Days or Greater Past Due | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	12,428
90 Days or Greater Past Due | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	2,609
90 Days or Greater Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	12,593
90 Days or Greater Past Due | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	7,617
90 Days or Greater Past Due | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	14,082
90 Days or Greater Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	2,528
90 Days or Greater Past Due | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	$ 3,508
Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			47,128
Current			7,119,369
Total loans			7,166,497
Past Due 90 days and Accruing			975
Business Activities Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			4,239,573
Business Activities Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			16,135
Current			2,780,821
Total loans			2,796,956	$ 2,796,956
Past Due 90 days and Accruing			0
Business Activities Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Current			382,014
Total loans			382,014	382,014
Past Due 90 days and Accruing			0
Business Activities Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans				2,414,942
Business Activities Loans | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			16,135
Current			2,398,807
Total loans			2,414,942
Past Due 90 days and Accruing			0
Business Activities Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			15,536
Current			1,427,081
Total loans			1,442,617	1,442,617
Past Due 90 days and Accruing			122
Business Activities Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			5,733
Current			2,142,725
Total loans			2,148,458	2,148,458
Past Due 90 days and Accruing			800
Business Activities Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Current			4,641
Total loans			4,641	4,641
Past Due 90 days and Accruing			0
Business Activities Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			5,733
Current			2,138,084
Total loans			2,143,817	2,143,817
Past Due 90 days and Accruing			800
Business Activities Loans | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			9,724
Current			768,742
Total loans			778,466	778,466
Past Due 90 days and Accruing			53
Business Activities Loans | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			1,296
Current			272,571
Total loans			273,867	273,867
Past Due 90 days and Accruing			52
Business Activities Loans | Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			8,428
Current			496,171
Total loans			504,599	504,599
Past Due 90 days and Accruing			1
Business Activities Loans | 30-59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			9,791
Business Activities Loans | 30-59 Days Past Due | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			423
Business Activities Loans | 30-59 Days Past Due | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Business Activities Loans | 30-59 Days Past Due | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			423
Business Activities Loans | 30-59 Days Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			2,841
Business Activities Loans | 30-59 Days Past Due | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			1,669
Business Activities Loans | 30-59 Days Past Due | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Business Activities Loans | 30-59 Days Past Due | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			1,669
Business Activities Loans | 30-59 Days Past Due | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			4,858
Business Activities Loans | 30-59 Days Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			149
Business Activities Loans | 30-59 Days Past Due | Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			4,709
Business Activities Loans | 60-89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			3,826
Business Activities Loans | 60-89 Days Past Due | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			89
Business Activities Loans | 60-89 Days Past Due | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Business Activities Loans | 60-89 Days Past Due | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			89
Business Activities Loans | 60-89 Days Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			2,033
Business Activities Loans | 60-89 Days Past Due | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			714
Business Activities Loans | 60-89 Days Past Due | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Business Activities Loans | 60-89 Days Past Due | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			714
Business Activities Loans | 60-89 Days Past Due | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			990
Business Activities Loans | 60-89 Days Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Business Activities Loans | 60-89 Days Past Due | Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			990
Business Activities Loans | 90 Days or Greater Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			33,511
Business Activities Loans | 90 Days or Greater Past Due | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			15,623
Business Activities Loans | 90 Days or Greater Past Due | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Business Activities Loans | 90 Days or Greater Past Due | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			15,623
Business Activities Loans | 90 Days or Greater Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			10,662
Business Activities Loans | 90 Days or Greater Past Due | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			3,350
Business Activities Loans | 90 Days or Greater Past Due | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Business Activities Loans | 90 Days or Greater Past Due | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			3,350
Business Activities Loans | 90 Days or Greater Past Due | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			3,876
Business Activities Loans | 90 Days or Greater Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			1,147
Business Activities Loans | 90 Days or Greater Past Due | Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			2,729
Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			20,793
Current			61,419
Total loans			2,335,931
Past Due 90 days and Accruing			6,404
Acquired Loans | Commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans			1,635,204
Acquired Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			14,399
Current			23,035
Total loans			1,237,313	1,237,313
Past Due 90 days and Accruing			5,751
Acquired Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Current			1,396
Total loans			47,792	47,792
Past Due 90 days and Accruing			0
Acquired Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans				1,189,521
Acquired Loans | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			14,399
Current			21,639
Total loans			1,189,521
Past Due 90 days and Accruing			5,751
Acquired Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			2,462
Current			26,718
Total loans			397,891	397,891
Past Due 90 days and Accruing			442
Acquired Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			2,168
Current			10,840
Total loans			537,014	537,014
Past Due 90 days and Accruing			139
Acquired Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Current			0
Total loans			3,478	3,478
Past Due 90 days and Accruing			0
Acquired Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			2,168
Current			10,840
Total loans			533,536	533,536
Past Due 90 days and Accruing			139
Acquired Loans | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			1,764
Current			826
Total loans			163,713	163,713
Past Due 90 days and Accruing			72
Acquired Loans | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			1,357
Current			540
Total loans			106,724	106,724
Past Due 90 days and Accruing			72
Acquired Loans | Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			407
Current			286
Total loans			56,989	$ 56,989
Past Due 90 days and Accruing			0
Acquired Loans | 30-59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			6,006
Acquired Loans | 30-59 Days Past Due | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			3,907
Acquired Loans | 30-59 Days Past Due | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Acquired Loans | 30-59 Days Past Due | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			3,907
Acquired Loans | 30-59 Days Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			888
Acquired Loans | 30-59 Days Past Due | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			745
Acquired Loans | 30-59 Days Past Due | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Acquired Loans | 30-59 Days Past Due | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			745
Acquired Loans | 30-59 Days Past Due | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			466
Acquired Loans | 30-59 Days Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			346
Acquired Loans | 30-59 Days Past Due | Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			120
Acquired Loans | 60-89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			1,279
Acquired Loans | 60-89 Days Past Due | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			245
Acquired Loans | 60-89 Days Past Due | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Acquired Loans | 60-89 Days Past Due | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			245
Acquired Loans | 60-89 Days Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			299
Acquired Loans | 60-89 Days Past Due | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			491
Acquired Loans | 60-89 Days Past Due | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Acquired Loans | 60-89 Days Past Due | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			491
Acquired Loans | 60-89 Days Past Due | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			244
Acquired Loans | 60-89 Days Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			222
Acquired Loans | 60-89 Days Past Due | Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			22
Acquired Loans | 90 Days or Greater Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			13,508
Acquired Loans | 90 Days or Greater Past Due | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			10,247
Acquired Loans | 90 Days or Greater Past Due | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Acquired Loans | 90 Days or Greater Past Due | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			10,247
Acquired Loans | 90 Days or Greater Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			1,275
Acquired Loans | 90 Days or Greater Past Due | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			932
Acquired Loans | 90 Days or Greater Past Due | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			0
Acquired Loans | 90 Days or Greater Past Due | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			932
Acquired Loans | 90 Days or Greater Past Due | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			1,054
Acquired Loans | 90 Days or Greater Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			789
Acquired Loans | 90 Days or Greater Past Due | Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due			$ 265

LOANS AND ALLOWANCE FOR CREDI_9

LOANS AND ALLOWANCE FOR CREDIT LOSSES Summary of Nonaccrual Loans and Loans Past Due (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		$ 39,640
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		20,119
Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		0
Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		20,119
Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		3,343
Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		0
Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		3,343
Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		4,805
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		1,812
Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		2,993
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		11,373
Financing receivable, nonaccrual, medallion loans, fair value	$ 4,900
Financing receivable, nonaccrual, medallion loans, contractual balance	71,700
Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		32,536
Past Due 90 days and Accruing		975
Business Activities Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		15,623
Past Due 90 days and Accruing		0
Business Activities Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		0
Past Due 90 days and Accruing		0
Business Activities Loans | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		15,623
Past Due 90 days and Accruing		0
Business Activities Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		2,550
Past Due 90 days and Accruing		800
Business Activities Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		0
Past Due 90 days and Accruing		0
Business Activities Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		2,550
Past Due 90 days and Accruing		800
Business Activities Loans | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		3,823
Past Due 90 days and Accruing		53
Business Activities Loans | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		1,095
Past Due 90 days and Accruing		52
Business Activities Loans | Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		2,728
Past Due 90 days and Accruing		1
Business Activities Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		10,540
Past Due 90 days and Accruing		122
Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		7,104
Past Due 90 days and Accruing		6,404
Acquired Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		4,496
Past Due 90 days and Accruing		5,751
Acquired Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		0
Past Due 90 days and Accruing		0
Acquired Loans | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		4,496
Past Due 90 days and Accruing		5,751
Acquired Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		793
Past Due 90 days and Accruing		139
Acquired Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		0
Past Due 90 days and Accruing		0
Acquired Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		793
Past Due 90 days and Accruing		139
Acquired Loans | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		982
Past Due 90 days and Accruing		72
Acquired Loans | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		717
Past Due 90 days and Accruing		72
Acquired Loans | Consumer loans | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		265
Past Due 90 days and Accruing		0
Acquired Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		833
Past Due 90 days and Accruing		442
Accounting Standards Update 2016-13
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	51,116	39,640
Nonaccrual With No Related Allowance	18,948
Past Due 90 days and Accruing	5,052
Interest Income Recognized on Nonaccrual	0
Accounting Standards Update 2016-13 | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Nonaccrual With No Related Allowance	0
Past Due 90 days and Accruing	0
Interest Income Recognized on Nonaccrual	0
Accounting Standards Update 2016-13 | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	803	811
Nonaccrual With No Related Allowance	380
Past Due 90 days and Accruing	0
Interest Income Recognized on Nonaccrual	0
Accounting Standards Update 2016-13 | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	10,596	15,389
Nonaccrual With No Related Allowance	7,967
Past Due 90 days and Accruing	1,832
Interest Income Recognized on Nonaccrual	0
Accounting Standards Update 2016-13 | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	1,555	1,031
Nonaccrual With No Related Allowance	0
Past Due 90 days and Accruing	1,054
Interest Income Recognized on Nonaccrual	0
Accounting Standards Update 2016-13 | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	13,978	6,411
Nonaccrual With No Related Allowance	2,908
Past Due 90 days and Accruing	104
Interest Income Recognized on Nonaccrual	0
Accounting Standards Update 2016-13 | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	2,324	1,798
Nonaccrual With No Related Allowance	279
Past Due 90 days and Accruing	204
Interest Income Recognized on Nonaccrual	0
Accounting Standards Update 2016-13 | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	3,500	2,982
Nonaccrual With No Related Allowance	0
Past Due 90 days and Accruing	8
Interest Income Recognized on Nonaccrual	0
Accounting Standards Update 2016-13 | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	10,743	5,465
Nonaccrual With No Related Allowance	1,405
Past Due 90 days and Accruing	1,850
Interest Income Recognized on Nonaccrual	0
Accounting Standards Update 2016-13 | Commercial and industrial loans | Commercial and industrial - other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	7,617	$ 5,753
Nonaccrual With No Related Allowance	6,009
Past Due 90 days and Accruing	0
Interest Income Recognized on Nonaccrual	$ 0

LOANS AND ALLOWANCE FOR CRED_10

LOANS AND ALLOWANCE FOR CREDIT LOSSES Summary of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		$ 39,640
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	$ 26,936
Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	59
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	7,004
Commercial | Construction | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial | Construction | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial | Construction | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial | Commercial multifamily | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	603
Commercial | Commercial multifamily | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial | Commercial multifamily | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		20,119
Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		0
Commercial real estate | Commercial real estate owner occupied | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	11,676
Commercial real estate | Commercial real estate owner occupied | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial real estate | Commercial real estate owner occupied | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial real estate | Commercial real estate non-owner occupied | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	2,370
Commercial real estate | Commercial real estate non-owner occupied | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial real estate | Commercial real estate non-owner occupied | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		11,373
Commercial and industrial loans | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	865
Commercial and industrial loans | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	59
Commercial and industrial loans | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	860
Commercial and industrial loans | Commercial and industrial - other | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial and industrial loans | Commercial and industrial - other | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Commercial and industrial loans | Commercial and industrial - other | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	6,144
Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		3,343
Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		0
Residential mortgages | Real Estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	10,614
Residential mortgages | Real Estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Residential mortgages | Real Estate | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		4,805
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans		$ 1,812
Consumer loans | Home equity | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	732
Consumer loans | Home equity | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Consumer loans | Home equity | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Consumer loans | Consumer other | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	76
Consumer loans | Consumer other | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0
Consumer loans | Consumer other | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	$ 0

LOANS AND ALLOWANCE FOR CRED_11

LOANS AND ALLOWANCE FOR CREDIT LOSSES Schedule of Troubled Debt Restructurings, Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	$ 19,316	$ 27,415
Principal payments	(5,769)	(1,413)
TDR Status change	0	0
Other reductions	0	(1,155)
Newly identified TDRs	902	338
Balance at end of the period	14,449	$ 25,185
Commercial | Construction
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	0
Principal payments	0
TDR Status change	0
Other reductions	0
Newly identified TDRs	0
Balance at end of the period	0
Commercial | Commercial multifamily
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	793
Principal payments	(14)
TDR Status change	0
Other reductions	0
Newly identified TDRs	0
Balance at end of the period	779
Commercial real estate | Commercial real estate owner occupied
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	13,331
Principal payments	(5,693)
TDR Status change	0
Other reductions	0
Newly identified TDRs	0
Balance at end of the period	7,638
Commercial real estate | Commercial real estate non-owner occupied
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	1,373
Principal payments	0
TDR Status change	0
Other reductions	0
Newly identified TDRs	0
Balance at end of the period	1,373
Commercial and industrial loans
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	1,109
Principal payments	(13)
TDR Status change	0
Other reductions	0
Newly identified TDRs	0
Balance at end of the period	1,096
Commercial and industrial loans | Commercial and industrial - other
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	340
Principal payments	(24)
TDR Status change	0
Other reductions	0
Newly identified TDRs	902
Balance at end of the period	1,218
Residential mortgages | Real Estate
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	2,045
Principal payments	(22)
TDR Status change	0
Other reductions	0
Newly identified TDRs	0
Balance at end of the period	2,023
Consumer loans | Home equity
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	277
Principal payments	1
TDR Status change	0
Other reductions	0
Newly identified TDRs	0
Balance at end of the period	278
Consumer loans | Consumer other
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	48
Principal payments	(4)
TDR Status change	0
Other reductions	0
Newly identified TDRs	0
Balance at end of the period	$ 44

LOANS AND ALLOWANCE FOR CRED_12

LOANS AND ALLOWANCE FOR CREDIT LOSSES Loans Modified as Troubled Debt Restructurings (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020USD ($)Loan	Mar. 31, 2019USD ($)Loan	Dec. 31, 2019USD ($)modification
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of Modifications	3,000	3,000	3
Pre-Modification Outstanding Recorded Investment	$ 902	$ 338	$ 338
Post-Modification Outstanding Recorded Investment	$ 902	$ 338	$ 338
Commercial | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of Modifications | modification			2
Pre-Modification Outstanding Recorded Investment			$ 145
Post-Modification Outstanding Recorded Investment			$ 145
Commercial and industrial loans | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Number of Modifications | modification			1
Pre-Modification Outstanding Recorded Investment			$ 193
Post-Modification Outstanding Recorded Investment			$ 193

LOANS AND ALLOWANCE FOR CRED_13

LOANS AND ALLOWANCE FOR CREDIT LOSSES Unamortized Net Costs and Premiums (Details) $ in Thousands	Dec. 31, 2019USD ($)
Credit Loss [Abstract]
Unamortized net loan origination costs	$ 13,259
Unamortized net premium on purchased loans	2,643
Total unamortized net costs and premiums	$ 15,902

LOANS AND ALLOWANCE FOR CRED_14

LOANS AND ALLOWANCE FOR CREDIT LOSSES Loans and Debt Securities Acquired with Deteriorated Credit Quality (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019USD ($)
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield Movement Schedule [Roll Forward]
Balance at beginning of period	$ 2,840
Accretion	(1,320)
Net reclassification from nonaccretable difference	665
Payments received, net	(55)
Reclassification to TDR	9
Balance at end of period	$ 2,139

LOANS AND ALLOWANCE FOR CRED_15

LOANS AND ALLOWANCE FOR CREDIT LOSSES Loans Evaluated For Impairment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	$ 9,303,177	$ 9,502,428	$ 9,502,428
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			4,034,269
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	$ 1,486,054	$ 1,522,059	1,840,508
Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			2,685,472
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			942,179
Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment			5,652
Purchased credit-impaired loans			61,419
Collectively evaluated			2,268,860
Financing receivable, before allowance for credit loss			2,335,931
Acquired Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment			4,241
Purchased credit-impaired loans			23,035
Collectively evaluated			1,210,037
Financing receivable, before allowance for credit loss			1,237,313	$ 1,237,313
Acquired Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment			464
Purchased credit-impaired loans			26,718
Collectively evaluated			370,709
Financing receivable, before allowance for credit loss			397,891	397,891
Acquired Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment			372
Purchased credit-impaired loans			10,840
Collectively evaluated			525,802
Financing receivable, before allowance for credit loss			537,014	537,014
Acquired Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment			575
Purchased credit-impaired loans			826
Collectively evaluated			162,312
Financing receivable, before allowance for credit loss			163,713	163,713
Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment			32,008
Collectively evaluated			7,134,489
Financing receivable, before allowance for credit loss			7,166,497
Business Activities Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment			19,192
Collectively evaluated			2,777,764
Financing receivable, before allowance for credit loss			2,796,956	2,796,956
Business Activities Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment			9,167
Collectively evaluated			1,433,450
Financing receivable, before allowance for credit loss			1,442,617	1,442,617
Business Activities Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment			3,019
Collectively evaluated			2,145,439
Financing receivable, before allowance for credit loss			2,148,458	2,148,458
Business Activities Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment			630
Collectively evaluated			777,836
Financing receivable, before allowance for credit loss			$ 778,466	$ 778,466

LOANS AND ALLOWANCE FOR CRED_16

LOANS AND ALLOWANCE FOR CREDIT LOSSES Summary of Impaired Loans (Details) $ in Thousands	Dec. 31, 2019USD ($)
Business Activities Loans
Recorded Investment
Total	$ 31,879
Unpaid Principal Balance
Total	65,627
Related Allowance
With an allowance recorded	294
Business Activities Loans | Commercial real estate
Recorded Investment
Total	19,226
Unpaid Principal Balance
Total	38,904
Related Allowance
With an allowance recorded	20
Business Activities Loans | Commercial real estate | Other commercial real estate
Recorded Investment
With no related allowance	18,676
With an allowance recorded	550
Unpaid Principal Balance
With no related allowance	37,493
With an allowance recorded	1,411
Related Allowance
With an allowance recorded	20
Business Activities Loans | Commercial and industrial loans
Recorded Investment
With no related allowance	4,805
With an allowance recorded	4,166
Total	8,971
Unpaid Principal Balance
With no related allowance	10,104
With an allowance recorded	12,136
Total	22,240
Related Allowance
With an allowance recorded	122
Business Activities Loans | Residential mortgages
Recorded Investment
Total	3,048
Unpaid Principal Balance
Total	3,623
Related Allowance
With an allowance recorded	109
Business Activities Loans | Residential mortgages | 1-4 Family
Recorded Investment
With no related allowance	433
With an allowance recorded	2,615
Unpaid Principal Balance
With no related allowance	699
With an allowance recorded	2,924
Related Allowance
With an allowance recorded	109
Business Activities Loans | Consumer
Recorded Investment
Total	634
Unpaid Principal Balance
Total	860
Related Allowance
With an allowance recorded	43
Business Activities Loans | Consumer | Other commercial real estate
Recorded Investment
With no related allowance	0
With an allowance recorded	8
Unpaid Principal Balance
With no related allowance	0
With an allowance recorded	8
Related Allowance
With an allowance recorded	1
Business Activities Loans | Consumer | Home equity
Recorded Investment
With no related allowance	32
With an allowance recorded	594
Unpaid Principal Balance
With no related allowance	238
With an allowance recorded	614
Related Allowance
With an allowance recorded	42
Acquired Loans
Recorded Investment
Total	5,650
Unpaid Principal Balance
Total	9,040
Related Allowance
With an allowance recorded	118
Acquired Loans | Commercial real estate
Recorded Investment
Total	4,233
Unpaid Principal Balance
Total	7,071
Related Allowance
With an allowance recorded	97
Acquired Loans | Commercial real estate | Other commercial real estate
Recorded Investment
With no related allowance	3,200
With an allowance recorded	1,033
Unpaid Principal Balance
With no related allowance	6,021
With an allowance recorded	1,050
Related Allowance
With an allowance recorded	97
Acquired Loans | Commercial and industrial loans
Recorded Investment
With no related allowance	437
With an allowance recorded	28
Total	465
Unpaid Principal Balance
With no related allowance	532
With an allowance recorded	30
Total	562
Related Allowance
With an allowance recorded	1
Acquired Loans | Residential mortgages
Recorded Investment
Total	376
Unpaid Principal Balance
Total	403
Related Allowance
With an allowance recorded	8
Acquired Loans | Residential mortgages | 1-4 Family
Recorded Investment
With no related allowance	292
With an allowance recorded	84
Unpaid Principal Balance
With no related allowance	293
With an allowance recorded	110
Related Allowance
With an allowance recorded	8
Acquired Loans | Consumer
Recorded Investment
Total	576
Unpaid Principal Balance
Total	1,004
Related Allowance
With an allowance recorded	12
Acquired Loans | Consumer | Other commercial real estate
Recorded Investment
With no related allowance	0
With an allowance recorded	39
Unpaid Principal Balance
With no related allowance	0
With an allowance recorded	37
Related Allowance
With an allowance recorded	6
Acquired Loans | Consumer | Home equity
Recorded Investment
With no related allowance	416
With an allowance recorded	121
Unpaid Principal Balance
With no related allowance	844
With an allowance recorded	123
Related Allowance
With an allowance recorded	$ 6

LOANS AND ALLOWANCE FOR CRED_17

LOANS AND ALLOWANCE FOR CREDIT LOSSES Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details)	12 Months Ended
	Dec. 31, 2019USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Additional funds committed	$ 0
Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, average recorded investment	3,991,000
Impaired financing receivable, interest income, cash basis method	278,000
Acquired Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, average recorded investment	2,608,000
Impaired financing receivable, interest income, cash basis method	176,000
Acquired Loans | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, with no related allowance, average recorded investment	1,603,000
Impaired financing receivable, with no related allowance, interest income, cash basis method	117,000
Impaired financing receivable, with related allowance, average recorded investment	1,005,000
Impaired financing receivable, with related allowance, interest income, cash basis method	59,000
Acquired Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, average recorded investment	470,000
Impaired financing receivable, interest income, cash basis method	53,000
Acquired Loans | Commercial and industrial loans | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, with no related allowance, average recorded investment	441,000
Impaired financing receivable, with no related allowance, interest income, cash basis method	51,000
Impaired financing receivable, with related allowance, average recorded investment	29,000
Impaired financing receivable, with related allowance, interest income, cash basis method	2,000
Acquired Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, average recorded investment	329,000
Impaired financing receivable, interest income, cash basis method	18,000
Acquired Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, with no related allowance, average recorded investment	241,000
Impaired financing receivable, with no related allowance, interest income, cash basis method	11,000
Impaired financing receivable, with related allowance, average recorded investment	88,000
Impaired financing receivable, with related allowance, interest income, cash basis method	7,000
Acquired Loans | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, average recorded investment	584,000
Impaired financing receivable, interest income, cash basis method	31,000
Acquired Loans | Consumer loans | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, with no related allowance, average recorded investment	0
Impaired financing receivable, with no related allowance, interest income, cash basis method	0
Impaired financing receivable, with related allowance, average recorded investment	41,000
Impaired financing receivable, with related allowance, interest income, cash basis method	2,000
Acquired Loans | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, with no related allowance, average recorded investment	475,000
Impaired financing receivable, with no related allowance, interest income, cash basis method	23,000
Impaired financing receivable, with related allowance, average recorded investment	68,000
Impaired financing receivable, with related allowance, interest income, cash basis method	6,000
Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, average recorded investment	28,997,000
Impaired financing receivable, interest income, cash basis method	2,212,000
Business Activities Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, average recorded investment	20,179,000
Impaired financing receivable, interest income, cash basis method	693,000
Business Activities Loans | Commercial real estate | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, with no related allowance, average recorded investment	19,805,000
Impaired financing receivable, with no related allowance, interest income, cash basis method	586,000
Impaired financing receivable, with related allowance, average recorded investment	374,000
Impaired financing receivable, with related allowance, interest income, cash basis method	107,000
Business Activities Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, average recorded investment	5,698,000
Impaired financing receivable, interest income, cash basis method	1,316,000
Business Activities Loans | Commercial and industrial loans | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, with no related allowance, average recorded investment	3,165,000
Impaired financing receivable, with no related allowance, interest income, cash basis method	523,000
Impaired financing receivable, with related allowance, average recorded investment	2,533,000
Impaired financing receivable, with related allowance, interest income, cash basis method	793,000
Business Activities Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, average recorded investment	2,612,000
Impaired financing receivable, interest income, cash basis method	167,000
Business Activities Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, with no related allowance, average recorded investment	185,000
Impaired financing receivable, with no related allowance, interest income, cash basis method	17,000
Impaired financing receivable, with related allowance, average recorded investment	2,427,000
Impaired financing receivable, with related allowance, interest income, cash basis method	150,000
Business Activities Loans | Consumer loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, average recorded investment	508,000
Impaired financing receivable, interest income, cash basis method	36,000
Business Activities Loans | Consumer loans | Other commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, with no related allowance, average recorded investment	0
Impaired financing receivable, with no related allowance, interest income, cash basis method	0
Impaired financing receivable, with related allowance, average recorded investment	11,000
Impaired financing receivable, with related allowance, interest income, cash basis method	1,000
Business Activities Loans | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Impaired financing receivable, with no related allowance, average recorded investment	148,000
Impaired financing receivable, with no related allowance, interest income, cash basis method	3,000
Impaired financing receivable, with related allowance, average recorded investment	349,000
Impaired financing receivable, with related allowance, interest income, cash basis method	$ 32,000

LOANS AND ALLOWANCE FOR CRED_18

LOANS AND ALLOWANCE FOR CREDIT LOSSES Allowance for Loan Losses - Pre Adoption of ASC 326 (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2019
Allowance for Loan and Lease Losses [Roll Forward]
Charged-off loans		$ 12,433
Provision/(releases) for loan losses	$ 34,807		$ 4,001
Commercial and industrial loans
Allowance for Loan and Lease Losses [Roll Forward]
Charged-off loans		$ 4,428
Business Activities Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			56,139
Charged-off loans			3,893
Recoveries on charged-off loans			584
Provision/(releases) for loan losses			3,382
Balance at end of period			56,212
Individually evaluated for impairment				$ 188
Collectively evaluated for impairment				56,024
Total			56,212	56,212
Business Activities Loans | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			21,732
Charged-off loans			1,256
Recoveries on charged-off loans			208
Provision/(releases) for loan losses			1,837
Balance at end of period			22,521
Individually evaluated for impairment				7
Collectively evaluated for impairment				22,514
Total			22,521	22,521
Business Activities Loans | Commercial and industrial loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			16,504
Charged-off loans			1,676
Recoveries on charged-off loans			307
Provision/(releases) for loan losses			3,112
Balance at end of period			18,247
Individually evaluated for impairment				52
Collectively evaluated for impairment				18,195
Total			18,247	18,247
Business Activities Loans | Residential mortgages
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			10,535
Charged-off loans			42
Recoveries on charged-off loans			15
Provision/(releases) for loan losses			(1,299)
Balance at end of period			9,209
Individually evaluated for impairment				120
Collectively evaluated for impairment				9,089
Total			9,209	9,209
Business Activities Loans | Consumer loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			7,368
Charged-off loans			919
Recoveries on charged-off loans			54
Provision/(releases) for loan losses			(268)
Balance at end of period			6,235
Individually evaluated for impairment				9
Collectively evaluated for impairment				6,226
Total			6,235	6,235
Acquired Loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			5,330
Charged-off loans			686
Recoveries on charged-off loans			563
Provision/(releases) for loan losses			619
Balance at end of period			5,826
Individually evaluated for impairment				132
Collectively evaluated for impairment				5,694
Total			5,826	5,826
Acquired Loans | Commercial real estate
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			3,153
Charged-off loans			180
Recoveries on charged-off loans			476
Provision/(releases) for loan losses			461
Balance at end of period			3,910
Individually evaluated for impairment				48
Collectively evaluated for impairment				3,862
Total			3,910	3,910
Acquired Loans | Commercial and industrial loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			1,064
Charged-off loans			262
Recoveries on charged-off loans			51
Provision/(releases) for loan losses			26
Balance at end of period			879
Individually evaluated for impairment				4
Collectively evaluated for impairment				875
Total			879	879
Acquired Loans | Residential mortgages
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			630
Charged-off loans			73
Recoveries on charged-off loans			5
Provision/(releases) for loan losses			60
Balance at end of period			622
Individually evaluated for impairment				36
Collectively evaluated for impairment				586
Total			622	622
Acquired Loans | Consumer loans
Allowance for Loan and Lease Losses [Roll Forward]
Balance at beginning of period			483
Charged-off loans			171
Recoveries on charged-off loans			31
Provision/(releases) for loan losses			72
Balance at end of period			415
Individually evaluated for impairment				44
Collectively evaluated for impairment				371
Total			$ 415	$ 415

LOANS AND ALLOWANCE FOR CRED_19

LOANS AND ALLOWANCE FOR CREDIT LOSSES Credit Risk Profile by Creditworthiness Category (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	$ 9,303,177	$ 9,502,428	$ 9,502,428
Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			942,179
Consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	377,135	378,793	380,591
Consumer | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			561,588
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	1,486,054	1,522,059	1,840,508
Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			2,685,472
Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			2,677,353
Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			8,119
Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	2,766,707	$ 2,853,385
Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			4,034,269
Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			429,806
Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			7,166,497
Business Activities Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			778,466	$ 778,466
Business Activities Loans | Consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			273,867	273,867
Business Activities Loans | Consumer | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			504,599	504,599
Business Activities Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			1,442,617	1,442,617
Business Activities Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			2,148,458	2,148,458
Business Activities Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			2,143,817	2,143,817
Business Activities Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			4,641	4,641
Business Activities Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			2,796,956	2,796,956
Business Activities Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			382,014	382,014
Business Activities Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				2,414,942
Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			2,335,931
Acquired Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			163,713	163,713
Acquired Loans | Consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			106,724	106,724
Acquired Loans | Consumer | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			56,989	56,989
Acquired Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			397,891	397,891
Acquired Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			537,014	537,014
Acquired Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			533,536	533,536
Acquired Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			3,478	3,478
Acquired Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			1,237,313	1,237,313
Acquired Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			47,792	47,792
Acquired Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				1,189,521
Pass | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	1,410,602
Pass | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	2,749,881
Pass | Business Activities Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				1,366,342
Pass | Business Activities Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				2,144,394
Pass | Business Activities Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				2,139,753
Pass | Business Activities Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				4,641
Pass | Business Activities Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				2,736,389
Pass | Business Activities Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				382,014
Pass | Business Activities Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				2,354,375
Pass | Acquired Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				373,744
Pass | Acquired Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				531,760
Pass | Acquired Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				528,282
Pass | Acquired Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				3,478
Pass | Acquired Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				1,176,729
Pass | Acquired Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				46,396
Pass | Acquired Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				1,130,333
Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			75,284
Special mention | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	44,995
Special mention | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	1,480
Special mention | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			63,943
Special mention | Business Activities Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				50,072
Special mention | Business Activities Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				714
Special mention | Business Activities Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				714
Special mention | Business Activities Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				0
Special mention | Business Activities Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				12,167
Special mention | Business Activities Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				0
Special mention | Business Activities Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				12,167
Special mention | Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			11,341
Special mention | Acquired Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				4,404
Special mention | Acquired Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				592
Special mention | Acquired Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				592
Special mention | Acquired Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				0
Special mention | Acquired Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				5,993
Special mention | Acquired Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				0
Special mention | Acquired Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				5,993
Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			122,424
Substandard | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	29,951
Substandard | Residential mortgages | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	15,346
Substandard | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			49,293
Substandard | Business Activities Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				24,112
Substandard | Business Activities Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				3,350
Substandard | Business Activities Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				3,350
Substandard | Business Activities Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				0
Substandard | Business Activities Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				48,400
Substandard | Business Activities Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				0
Substandard | Business Activities Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				48,400
Substandard | Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			$ 73,131
Substandard | Acquired Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				19,743
Substandard | Acquired Loans | Residential mortgages
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				4,662
Substandard | Acquired Loans | Residential mortgages | 1 to 4 Family
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				4,662
Substandard | Acquired Loans | Residential mortgages | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				0
Substandard | Acquired Loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				54,591
Substandard | Acquired Loans | Commercial real estate | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				1,396
Substandard | Acquired Loans | Commercial real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				53,195
Doubtful | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	506
Doubtful | Business Activities Loans | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				2,091
Performing | Consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	374,811
Performing | Business Activities Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				774,643
Performing | Business Activities Loans | Consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				272,772
Performing | Business Activities Loans | Consumer | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				501,871
Performing | Acquired Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				162,731
Performing | Acquired Loans | Consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				106,007
Performing | Acquired Loans | Consumer | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				56,724
Nonperforming | Consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	$ 2,324
Nonperforming | Business Activities Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				3,823
Nonperforming | Business Activities Loans | Consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				1,095
Nonperforming | Business Activities Loans | Consumer | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				2,728
Nonperforming | Acquired Loans | Consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				982
Nonperforming | Acquired Loans | Consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				717
Nonperforming | Acquired Loans | Consumer | Auto And Other Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss				$ 265

LOANS AND ALLOWANCE FOR CRED_20

LOANS AND ALLOWANCE FOR CREDIT LOSSES Summary of Total Loans Rated Special Mention or Lower (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	$ 9,303,177	$ 9,502,428	$ 9,502,428
Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			7,166,497
Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			2,335,931
Non-Accrual
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			39,640
Non-Accrual | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			32,536
Non-Accrual | Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			7,104
Substandard
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			122,424
Substandard | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			49,293
Substandard | Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			73,131
Classified
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			162,064
Classified | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			81,829
Classified | Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			80,235
Special mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			75,284
Special mention | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			63,943
Special mention | Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			11,341
Criticized
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			237,348
Criticized | Business Activities Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			145,772
Criticized | Acquired Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss			$ 91,576

DEPOSITS (Details)

DEPOSITS (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Deposits [Abstract]
Time less than $100,000	$ 871,215	$ 905,190
Time $100,000 through $250,000	1,825,472	2,027,717
Time more than $250,000	647,013	656,462
Total time deposits	3,343,700	3,589,369
Brokered time deposits	1,000,000	1,200,000
Reciprocal deposits	$ 104,900	$ 91,700

BORROWED FUNDS - Summary of Bor

BORROWED FUNDS - Summary of Borrowed Funds (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Principal, Short-term borrowings	$ 225,000	$ 125,000
Principal, Long-term borrowings	816,160	702,550
Total borrowings	$ 1,041,160	$ 827,550
Weighted average rate on short-term borrowings	1.45%	2.06%
Weighted average rate on long-term borrowings	2.54%	2.72%
Weighted average rate	2.30%	2.62%
Advances from the FHLB
Debt Instrument [Line Items]
Principal, Short-term borrowings	$ 225,000	$ 125,000
Principal, Long-term borrowings	$ 719,053	$ 605,501
Weighted average rate on short-term borrowings	1.45%	2.06%
Weighted average rate on long-term borrowings	2.07%	2.16%
Subordinated borrowings
Debt Instrument [Line Items]
Principal, Long-term borrowings	$ 74,277	$ 74,232
Weighted average rate on long-term borrowings	7.00%	7.00%
Junior subordinated borrowing - Trust I
Debt Instrument [Line Items]
Principal, Long-term borrowings	$ 15,464	$ 15,464
Weighted average rate on long-term borrowings	2.44%	3.76%
Junior subordinated borrowing - Trust II
Debt Instrument [Line Items]
Principal, Long-term borrowings	$ 7,366	$ 7,353
Weighted average rate on long-term borrowings	3.53%	3.59%

BORROWED FUNDS - Narrative (Det

BORROWED FUNDS - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended
	Sep. 30, 2012	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Line of credit, current		$ 3,000,000
Short-term debt		225,000,000	$ 125,000,000
Long-term borrowings		816,160,000	702,550,000
Advances from the FHLB
Debt Instrument [Line Items]
Long-term line of credit		0	0
Line of credit facility, remaining borrowing capacity		1,400,000,000	1,600,000,000
Short-term debt		225,000,000	125,000,000
Long-term borrowings		719,053,000	605,501,000
Federal Home Loan Bank Certificates And Obligations F H L B Callable Advances
Debt Instrument [Line Items]
Long-term borrowings		10,000,000	10,000,000
Federal Home Loan Bank Certificates And Obligations F H L B Amortizing Advances
Debt Instrument [Line Items]
Long-term borrowings		6,000,000	4,400,000
Subordinated borrowings
Debt Instrument [Line Items]
Long-term borrowings		74,277,000	74,232,000
Maturity period	15 years
Principal amount of debt issued	$ 75,000,000
Discount rate	1.15%
Fixed interest rate	6.875%
Maturity period with fixed interest rate	10 years
Subordinated borrowings | LIBOR
Debt Instrument [Line Items]
Interest rate margin	5.113%
Unamortized debt issuance expense		$ 307,000	$ 338,000
Junior subordinated borrowing | Trust I
Debt Instrument [Line Items]
Common stock of trust		100.00%
Common stock of trust included in other asset		$ 500,000
Sole asset of trust in form of debt		$ 15,500,000
Variable interest rate		2.44%	3.76%
Period up to which interest payments can be deferred		5 years
Junior subordinated borrowing | Trust II
Debt Instrument [Line Items]
Common stock of trust		100.00%
Common stock of trust included in other asset		$ 200,000
Sole asset of trust in form of debt		$ 8,200,000
Variable interest rate		3.53%	3.59%
Period up to which interest payments can be deferred		5 years
Junior subordinated borrowing | LIBOR | Trust I
Debt Instrument [Line Items]
Interest rate margin		1.85%
Junior subordinated borrowing | LIBOR | Trust II
Debt Instrument [Line Items]
Interest rate margin		1.70%
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity		$ 557,800,000	$ 201,300,000
Short-term debt		$ 0	$ 0

BORROWED FUNDS - Summary of Mat

BORROWED FUNDS - Summary of Maturities of FHLB (Details) - Fixed rate advances $ in Thousands	Mar. 31, 2020USD ($)
Principal
2019	$ 468,180
2020	395,476
2021	59,136
2022	11,675
2023 and beyond	9,586
Total FHLB advances	$ 944,053
Weighted Average Rate
Weighted Average Rate
2019	2.02%
2020	1.80%
2021	1.92%
2022	2.21%
2023 and beyond	1.61%
Total FHLB advances	1.92%

DERIVATIVE INSTRUMENTS AND HE_3

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Derivative [Line Items]
Notional amount	$ 4,197,556,000		$ 4,070,729,000
Cash collateral pledged	72,400,000
Amortized cost of securities pledged as collateral to derivative counterparties	35,000,000
Fair value of securities as pledged collateral to derivative counterparties	35,500,000
Interest expense	29,767,000	$ 35,650,000
Commercial counterparties
Derivative [Line Items]
Net asset position	1,100,000		600,000
Interest rate swaps
Derivative [Line Items]
Notional amount	9,200,000
Cash collateral pledged	72,411,000		96,310,000
Interest rate swaps | Commercial counterparties
Derivative [Line Items]
Cash collateral pledged	0		0
Net asset position	177,700,000		76,400,000
Derivative Liability, Fair Value, Amount Offset Against Collateral	0		1,100,000
Interest rate swaps | Institutional counterparties
Derivative [Line Items]
Cash collateral pledged	72,411,000		96,310,000
Derivative Liability, Fair Value, Amount Offset Against Collateral	75,600,000		78,800,000
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	213,088,000		$ 168,997,000
Economic hedges
Derivative [Line Items]
Notional amount	4,000,000,000
Credit valuation adjustments	$ 2,500,000
Economic hedges | Interest rate swap on tax advantaged economic development bond
Derivative [Line Items]
Fixed rate of interest	5.09%
Maturity period	21 years
Economic hedges | Interest rate swaps
Derivative [Line Items]
Notional amount	$ 3,400,000,000
Economic hedges | Risk participation agreements with dealer banks
Derivative [Line Items]
Notional amount	300,000,000
Economic hedges | Forward sale commitments
Derivative [Line Items]
Notional amount	$ 300,000,000

DERIVATIVE INSTRUMENTS AND HE_4

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 4,197,556	$ 4,070,729
Estimated fair value asset (liability)	103,543	(492)
Impact of settled to market contracts	109,000
Interest rate swaps
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	9,200
Total economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	4,000,000
Total economic hedges | Interest rate swaps
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	3,400,000
Total economic hedges | Risk participation agreements with dealer banks
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	300,000
Total economic hedges | Forward sale commitments
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	300,000
Designated as Hedging Instrument | Total economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	3,984,468	3,901,732
Estimated fair value asset (liability)	98,707	(3,120)
Designated as Hedging Instrument | Total economic hedges | Interest rate swaps | Interest rate swap on tax advantaged economic development bond
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 9,209	$ 9,390
Weighted average maturity	9 years 8 months 12 days	9 years 10 months 24 days
Weighted average rate, received	1.95%	2.08%
Weighted average rate, contract pay rate	5.09%	5.09%
Estimated fair value asset (liability)	$ (2,051)	$ (1,488)
Designated as Hedging Instrument | Total economic hedges | Interest rate swaps | Loans with commercial loan customers
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 1,674,769	$ 1,669,895
Weighted average maturity	6 years 3 months 18 days	6 years 4 months 24 days
Weighted average rate, received	4.34%	4.38%
Weighted average rate, contract pay rate	2.96%	3.28%
Estimated fair value asset (liability)	$ 177,708	$ 75,326
Designated as Hedging Instrument | Total economic hedges | Reverse interest rate swaps | Loans with commercial loan customers
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 1,674,769	$ 1,669,895
Weighted average maturity	6 years 3 months 18 days	6 years 4 months 24 days
Weighted average rate, received	2.96%	3.28%
Weighted average rate, contract pay rate	4.34%	4.38%
Estimated fair value asset (liability)	$ (73,046)	$ (77,051)
Designated as Hedging Instrument | Total economic hedges | Risk participation agreements with dealer banks
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 315,756	$ 315,140
Weighted average maturity	7 years 3 months 18 days	7 years 6 months
Estimated fair value asset (liability)	$ 586	$ 320
Designated as Hedging Instrument | Total economic hedges | Forward sale commitments
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 309,965	$ 237,412
Weighted average maturity	6 days	6 days
Estimated fair value asset (liability)	$ (4,490)	$ (227)
Not Designated as Hedging Instrument
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	213,088	168,997
Estimated fair value asset (liability)	4,836	2,628
Not Designated as Hedging Instrument | Commitments to lend
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 213,088	$ 168,997
Weighted average maturity	6 days	6 days
Estimated fair value asset (liability)	$ 4,836	$ 2,628

DERIVATIVE INSTRUMENTS AND HE_5

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Economic Hedges and Non-hedging Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest rate swaps | Economic hedges | Industrial revenue bond
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	$ (563)	$ (121)
Interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	102,382	(21,988)
(Unfavorable) change in credit valuation adjustment recognized in other non-interest income	(2,538)	(137)
Reverse interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	(102,382)	21,988
Risk participation agreements | Economic hedges
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	266	125
Forward commitments | Economic hedges
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	(4,263)	(518)
Realized (loss) in discontinued operations	(1,922)	(1,715)
Commitments to lend | Non-hedging derivatives
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	2,208	2,391
Realized (loss) in discontinued operations	$ 9,300	$ 9,432

DERIVATIVE INSTRUMENTS AND HE_6

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Offsetting of Financial Assets and Derivative Assets (Details) - Interest rate swaps - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Offsetting of Financial Assets and Derivative Assets
Gross amounts of recognized assets	$ 178,917	$ 77,068
Gross amounts offset in the Statements of Condition	(100)	(76)
Net amounts of assets presented in the Statements of Condition	178,817	76,992
Gross amounts not offset in the Statements of Condition, financial instruments	0	0
Gross amounts not offset in the Statements of Condition, cash collateral received	0	0
Net Amount	178,817	76,992
Institutional counterparties
Offsetting of Financial Assets and Derivative Assets
Gross amounts of recognized assets	1,209	640
Gross amounts offset in the Statements of Condition	(100)	(54)
Net amounts of assets presented in the Statements of Condition	1,109	586
Gross amounts not offset in the Statements of Condition, financial instruments	0	0
Gross amounts not offset in the Statements of Condition, cash collateral received	0	0
Net Amount	1,109	586
Commercial counterparties
Offsetting of Financial Assets and Derivative Assets
Gross amounts of recognized assets	177,708	76,428
Gross amounts offset in the Statements of Condition	0	(22)
Net amounts of assets presented in the Statements of Condition	177,708	76,406
Gross amounts not offset in the Statements of Condition, financial instruments	0	0
Gross amounts not offset in the Statements of Condition, cash collateral received	0	0
Net Amount	$ 177,708	$ 76,406

DERIVATIVE INSTRUMENTS AND HE_7

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Offsetting Financial Liabilities and Derivative Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts not offset in the Statements of Condition, cash collateral pledged	$ 72,400
Interest rate swaps
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts of recognized liabilities	(75,621)	$ (81,104)
Gross amounts offset in the Statements of Condition	0	1,219
Net amounts of liabilities presented in the Statements of Condition	(75,621)	(79,885)
Gross amounts not offset in the Statements of Condition, financial instruments	35,488	25,828
Gross amounts not offset in the Statements of Condition, cash collateral pledged	72,411	96,310
Net Amount	32,278	42,253
Interest rate swaps | Institutional counterparties
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts of recognized liabilities	(75,621)	(80,024)
Gross amounts offset in the Statements of Condition	0	1,219
Net amounts of liabilities presented in the Statements of Condition	(75,621)	(78,805)
Gross amounts not offset in the Statements of Condition, financial instruments	35,488	25,828
Gross amounts not offset in the Statements of Condition, cash collateral pledged	72,411	96,310
Net Amount	32,278	43,333
Interest rate swaps | Commercial counterparties
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts of recognized liabilities	0	(1,080)
Gross amounts offset in the Statements of Condition	0	0
Net amounts of liabilities presented in the Statements of Condition	0	(1,080)
Gross amounts not offset in the Statements of Condition, financial instruments	0	0
Gross amounts not offset in the Statements of Condition, cash collateral pledged	0	0
Net Amount	$ 0	$ (1,080)

LEASES - Narrative (Details)

LEASES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 3.5	$ 3.4
Minimum
Lessee, Lease, Description [Line Items]
Operating lease contract term	1 month
Maximum
Lessee, Lease, Description [Line Items]
Operating lease contract term	20 years
Discontinued Operations
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 0.5	$ 0.7

LEASES - Assets and Liabilities

LEASES - Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Lease Right-of-Use Assets
Operating lease right-of-use assets	$ 73,356	$ 76,332
Finance lease right-of-use assets	7,589	7,720
Total Lease Right-of-Use Assets	80,945	84,052
Lease Liabilities
Operating lease liabilities	77,720	80,734
Finance lease liabilities	10,760	10,883
Total Lease Liabilities	88,480	91,617
Discontinued Operations
Lease Right-of-Use Assets
Operating lease right-of-use assets	2,700	3,500
Lease Liabilities
Operating lease liabilities	$ 2,800	$ 3,500

LEASES - Supplemental Lease Inf

LEASES - Supplemental Lease Information (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Lessee, lease, remaining lease term	10 years 1 month 6 days	10 years 3 months 18 days
Operating lease, weighted average remaining lease term	14 years 7 months 6 days	14 years 9 months 18 days
Operating lease, weighted average discount rate, percent	3.35%	3.36%
Finance lease, weighted average discount rate, percent	5.00%	5.00%

LEASES - Supplemental Cash Flow

LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 3,628	$ 3,498
Operating cash flows from finance leases	134	159
Financing cash flows from finance leases	124	98
Discontinued Operations
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 500	$ 700

LEASES - Maturity Analysis of L

LEASES - Maturity Analysis of Lease Liability (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Operating Leases
2020	$ 9,923
2021	12,427
2022	11,370
2023	9,354
2024	7,909
Thereafter	40,984
Total undiscounted lease payments	91,967
Less amounts representing interest	(14,247)
Lease liability	77,720	$ 80,734
Finance Leases
2020	765
2021	1,031
2022	1,031
2023	1,037
2024	1,037
Thereafter	10,260
Total undiscounted lease payments	15,161
Less amounts representing interest	(4,401)
Lease liability	10,760	10,883
Discontinued Operations
Operating Leases
Lease liability	$ 2,800	$ 3,500

CAPITAL RATIOS AND SHAREHOLDE_3

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Actual and Required Capital Ratios (Details)	Mar. 31, 2020	Dec. 31, 2019
Tier 1 capital to risk-weighted assets
Total capital to risk weighted assets	13.80%	13.70%
Common equity tier 1 capital to risk weighted assets	11.90%	12.10%
Tier 1 capital to risk weighted assets	12.10%	12.30%
Tier 1 capital to average assets	9.30%	9.30%
Bank
Tier 1 capital to risk-weighted assets
Total capital to risk weighted assets	12.50%	12.80%
Common equity tier 1 capital to risk weighted assets	11.70%	12.20%
Tier 1 capital to risk weighted assets	11.70%	12.20%
Tier 1 capital to average assets	8.90%	9.10%
Regulatory minimum to be well capitalized, Total capital to risk weighted assets	10.00%	10.00%
Regulatory minimum to be well capitalized, Common equity tier 1 capital to risk weighted assets	6.50%	6.50%
Regulatory minimum to be well capitalized, Tier 1 capital to risk weighted assets	8.00%	8.00%
Regulatory minimum to be well capitalized, Tier 1 capital to average assets	5.00%	5.00%

CAPITAL RATIOS AND SHAREHOLDE_4

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Components of AOCI (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders’ equity	$ 1,722,278	$ 1,758,564	$ 1,577,005	$ 1,552,918
Accumulated other comprehensive income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders’ equity	31,017	11,993	(2,906)	(13,470)
Net unrealized holding gain on AFS securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income (loss), before tax	44,877	19,263
Income taxes related to items of accumulated other comprehensive income	(11,649)	(5,059)
Total shareholders’ equity	33,228	14,204	(889)	(11,453)
Net unrealized holding (loss) on pension plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income (loss), before tax	(3,023)	(3,023)
Income taxes related to items of accumulated other comprehensive income	812	812
Total shareholders’ equity	$ (2,211)	$ (2,211)	$ (2,017)	$ (2,017)

CAPITAL RATIOS AND SHAREHOLDE_5

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Components of OCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net unrealized gains (losses) arising during the period
Net of Tax	$ 19,023	$ 10,568
Less: reclassification adjustment for gains realized in net income
Net of Tax	(1)	4
Other comprehensive income (loss)
Before Tax	25,614	14,215
Tax Effect	(6,590)	(3,651)
Total other comprehensive income	19,024	10,564
Net unrealized holding gain on AFS securities
Net unrealized gains (losses) arising during the period
Before Tax	25,613	14,221
Tax Effect	(6,590)	(3,653)
Net of Tax	19,023	10,568
Less: reclassification adjustment for gains realized in net income
Before Tax	(1)	6
Tax Effect	0	(2)
Net of Tax	(1)	4
Other comprehensive income (loss)
Before Tax	25,614	14,215
Tax Effect	(6,590)	(3,651)
Total other comprehensive income	$ 19,024	$ 10,564

CAPITAL RATIOS AND SHAREHOLDE_6

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	$ 1,758,564	$ 1,552,918
Other comprehensive income (loss) before reclassifications	19,023	10,568
Less: amounts reclassified from accumulated other comprehensive income (loss)	(1)	4
Total other comprehensive income	19,024	10,564
Balance at end of period	1,722,278	1,577,005
Accumulated other comprehensive income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	11,993	(13,470)
Total other comprehensive income	19,024	10,564
Balance at end of period	31,017	(2,906)
Net unrealized holding gain on AFS securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	14,204	(11,453)
Other comprehensive income (loss) before reclassifications	19,023	10,568
Less: amounts reclassified from accumulated other comprehensive income (loss)	(1)	4
Total other comprehensive income	19,024	10,564
Balance at end of period	33,228	(889)
Net unrealized holding (loss) on pension plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(2,211)	(2,017)
Other comprehensive income (loss) before reclassifications	0	0
Less: amounts reclassified from accumulated other comprehensive income (loss)	0	0
Total other comprehensive income	0	0
Balance at end of period	$ (2,211)	$ (2,017)

CAPITAL RATIOS AND SHAREHOLDE_7

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Amounts Reclassified Out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest income	$ 5,636	$ 21,722
Tax expense	1,996	(6,917)
(Loss)/income available to common shareholders	(19,995)	23,395
Amount Reclassified From Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
(Loss)/income available to common shareholders	(1)	4
Realized gains on AFS securities | Amount Reclassified From Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest income	(1)	6
Tax expense	0	(2)
(Loss)/income available to common shareholders	$ (1)	$ 4

EARNINGS PER SHARE - Schedule o

EARNINGS PER SHARE - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings per share
Income from continuing operations	$ (12,072)	$ 24,272
Income from discontinued operations	(7,798)	(637)
Net (loss)/income	$ (19,870)	$ 23,635
Average number of common shares issued (in shares)	51,903	46,212
Less: average number of treasury shares (in shares)	1,744	717
Less: average number of unvested stock award shares (in shares)	488	425
Plus: average participating preferred shares (in shares)	533	1,043
Average number of basic common shares outstanding (in shares)	50,204	46,113
Average number of diluted common shares outstanding (in shares)	50,204	46,261
Basic (loss)/earnings per common share:
Continuing operations (in dollars per share)	$ (0.24)	$ 0.52
Discontinued operations (in dollars per share)	(0.16)	(0.01)
Total (in dollars per share)	(0.40)	0.51
Diluted (loss)/earnings per common share:
Continuing operations (in dollars per share)	(0.24)	0.52
Discontinued operations (in dollars per share)	(0.16)	(0.01)
Total (in dollars per share)	$ (0.40)	$ 0.51
Unvested stock award shares
Earnings per share
Plus: dilutive effect of share-based payment arrangements (in shares)	0	135
Stock options
Earnings per share
Plus: dilutive effect of share-based payment arrangements (in shares)	0	13

EARNINGS PER SHARE - Narrative

EARNINGS PER SHARE - Narrative (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2019shares
Unvested stock award shares
Anti-dilutive securities
Securities excluded from the earnings per share calculations (in shares)	291
Stock options
Anti-dilutive securities
Securities excluded from the earnings per share calculations (in shares)	13

STOCK-BASED COMPENSATION PLAN_2

STOCK-BASED COMPENSATION PLANS - Summary of Activity (Details) - $ / shares shares in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Non-Vested Stock Awards Outstanding
Non-vested Stock Awards Outstanding, Number of Shares
Balance at the beginning of the period (in shares)	450
Granted (in shares)	108
Stock awards vested (in shares)	(53)	(65)
Forfeited (in shares)	(11)
Balance at the end of the period (in shares)	494
Non-vested Stock Awards Outstanding, Weighted-Average Grant Date Fair Value
Balance at the beginning of the period (in dollars per share)	$ 32.47
Granted (in dollars per share)	29.09
Stock awards vested (in dollars per share)	33.40
Forfeited (in dollars per share)	34.14
Balance at the end of the period (in dollars per share)	$ 31.42
Stock Options Outstanding
Stock Options Outstanding, Number of Shares
Balance at the beginning of the period (in shares)	153
Granted (in shares)	0
Acquired (in shares)	0
Stock options exercised (in shares)	(24)
Expired (in shares)	0
Balance at the end of the period (in shares)	129
Exercisable options at the end of the period (in shares)	129
Stock Options Outstanding, Weighted-Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 22
Granted (in dollars per share)	0
Acquired (in dollars per share)	0
Stock options exercised (in dollars per share)	21.48
Expired (in dollars per share)	0
Balance at the end of the period (in dollars per share)	22.09
Exercisable options at the end of the period (in dollars per share)	$ 22.09

STOCK-BASED COMPENSATION PLAN_3

STOCK-BASED COMPENSATION PLANS - Narrative (Details) - USD ($) shares in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of stock options	$ 519,000	$ 0
Total compensation cost	1,500,000	1,000,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of stock options	$ 519,000	$ 0
Non-Vested Stock Awards Outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards vested (in shares)	53	65

FAIR VALUE MEASUREMENTS - Measu

FAIR VALUE MEASUREMENTS - Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 1,403,858	$ 1,311,555
Marketable equity securities	32,283	41,556
Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	9,829	10,769
Securities available for sale	1,403,858	1,311,555
Marketable equity securities	32,283	41,555
Loans held for investment at fair value	9,469,947	9,653,550
Loans held for sale	129,975	169,319
Derivative assets	182,544	80,190
Derivative liabilities	79,001	80,681
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	0	0
Securities available for sale	0	0
Marketable equity securities	31,612	40,499
Loans held for investment at fair value	0	0
Loans held for sale	0	0
Derivative assets	0	0
Derivative liabilities	4,490	227
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	0	0
Securities available for sale	1,369,354	1,267,573
Marketable equity securities	671	1,056
Loans held for investment at fair value	0	0
Loans held for sale	129,975	140,280
Derivative assets	177,708	77,562
Derivative liabilities	74,511	80,454
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	9,829	10,769
Securities available for sale	34,504	43,982
Marketable equity securities	0	0
Loans held for investment at fair value	9,469,947	9,653,550
Loans held for sale	0	29,039
Derivative assets	4,836	2,628
Derivative liabilities	0	0
Recurring | Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	9,829	10,769
Loans held for sale	129,975	140,280
Derivative assets	182,544	80,190
Capitalized servicing rights	8,518	12,229
Derivative liabilities	79,001	80,681
Recurring | Total Fair Value | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	114,071	110,138
Recurring | Total Fair Value | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	801,184	748,812
Recurring | Total Fair Value | Debt securities | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	143,328	147,744
Recurring | Total Fair Value | Debt securities | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	194,721	147,096
Recurring | Total Fair Value | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	94,289	116,576
Recurring | Total Fair Value | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	5,492
Recurring | Total Fair Value | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	50,773	41,189
Recurring | Total Fair Value | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable equity securities	32,283	41,556
Loans held for investment at fair value	4,895	0
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	0	0
Loans held for sale	0	0
Derivative assets	0	0
Capitalized servicing rights	0	0
Derivative liabilities	4,490	227
Recurring | Level 1 | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 1 | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 1 | Debt securities | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 1 | Debt securities | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 1 | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 1 | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0
Recurring | Level 1 | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 1 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable equity securities	31,612	40,499
Loans held for investment at fair value	0	0
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	0	0
Loans held for sale	129,975	140,280
Derivative assets	177,708	77,562
Capitalized servicing rights	0	0
Derivative liabilities	74,511	80,454
Recurring | Level 2 | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	114,071	110,138
Recurring | Level 2 | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	801,184	748,812
Recurring | Level 2 | Debt securities | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	143,328	147,744
Recurring | Level 2 | Debt securities | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	194,721	147,096
Recurring | Level 2 | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	59,785	73,610
Recurring | Level 2 | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	5,492
Recurring | Level 2 | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	50,773	41,189
Recurring | Level 2 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable equity securities	671	1,057
Loans held for investment at fair value	0	0
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	9,829	10,769
Securities available for sale	34,504	42,966
Loans held for sale	0	0
Derivative assets	4,836	2,628
Capitalized servicing rights	8,518	12,229
Derivative liabilities	0	0
Recurring | Level 3 | Debt securities | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 3 | Debt securities | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 3 | Debt securities | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 3 | Debt securities | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 3 | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	34,504	42,966
Recurring | Level 3 | Debt securities | Trust preferred securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0
Recurring | Level 3 | Debt securities | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	0	0
Recurring | Level 3 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable equity securities	0	0
Loans held for investment at fair value	$ 4,895	$ 0

FAIR VALUE MEASUREMENTS - Narra

FAIR VALUE MEASUREMENTS - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)security	Mar. 31, 2019USD ($)	Jan. 01, 2020USD ($)	Dec. 31, 2019USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of trading securities in the portfolio | security	1
Retained earnings	$ 304,442			$ 361,082
Continuing Operations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payments for origination of mortgage loans held-for-sale	16,600	$ 11,500
Proceeds from sale and collection of loans held-for-sale	21,100	9,000
Continuing Operations | Loans Held for Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) in fair value of loans held for sale included in earnings	(49)	(60)
Discontinued Operations | Loans Held for Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains (losses) in fair value of loans held for sale included in earnings	$ (500)	$ (1,200)
Cumulative Effect, Period of Adoption, Adjustment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Retained earnings			$ (24,380)
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Retained earnings			(24,400)
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2016-13 | Loans Held for Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Retained earnings			$ (11,200)

FAIR VALUE MEASUREMENTS - Loans

FAIR VALUE MEASUREMENTS - Loans Held for Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from discontinued operations	$ 140,064	$ 154,132
Loans Held for Investment | Continuing Operations | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for investment	4,895
Assets from discontinued operations	71,740
Aggregate fair value less aggregate unpaid principal	$ (66,845)

FAIR VALUE MEASUREMENTS - Loa_2

FAIR VALUE MEASUREMENTS - Loans Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loans Held for Sale
Aggregate Unpaid Principal	$ 140,064	$ 154,132
Level 2
Loans Held for Sale
Aggregate Fair Value	129,975	140,280
Recurring | Level 2
Loans Held for Sale
Aggregate Fair Value	129,975	140,280
Recurring | Loans Held for Sale | Level 2
Loans Held for Sale
Aggregate Fair Value	129,975	140,280
Aggregate Unpaid Principal	126,324	137,107
Aggregate fair value less aggregate unpaid principal	3,651	3,173
Continuing Operations | Recurring | Loans Held for Sale | Level 2
Loans Held for Sale
Aggregate Fair Value	4,252	7,625
Aggregate Unpaid Principal	4,161	7,485
Aggregate fair value less aggregate unpaid principal	91	140
Discontinued Operations | Recurring | Loans Held for Sale | Level 2
Loans Held for Sale
Aggregate Fair Value	125,723	132,655
Aggregate Unpaid Principal	122,163	129,622
Aggregate fair value less aggregate unpaid principal	$ 3,560	$ 3,033

FAIR VALUE MEASUREMENTS - Chang

FAIR VALUE MEASUREMENTS - Changes in Level 3 (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Commitments to lend
Changes in Level 3 assets that were measured at fair value on a recurring basis
Unrealized gains (losses) relating to instruments still held at the end of the period	$ 4,836,000	$ 6,318,000
Derivative Asset (Liability)
Beginning balance	2,628,000	3,927,000
Unrealized (loss), net recognized in other non-interest income		0
Transfers to held for sale loans	(8,831,000)	(8,830,000)
Ending balance	4,836,000	6,318,000
Trading Security
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	10,769,000	11,212,000
Unrealized (loss), net recognized in other non-interest income	(759,000)	126,000
Paydown of asset	(181,000)	(174,000)
Balance at the end of the period	9,829,000	11,164,000
Unrealized gains (losses) relating to instruments still held at the end of the period	620,000	1,248,000
Available-for-sale Securities
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	42,966,000	0
Maturity of AFS security	(9,000,000)
Unrealized gain included in accumulated other comprehensive income	538,000
Balance at the end of the period	34,504,000	0
Unrealized gains (losses) relating to instruments still held at the end of the period	151	0
Capitalized servicing rights
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	12,299,000	11,485,000
Unrealized (loss), net recognized in other non-interest income		0
Additions to servicing rights	0	1,008,000
Balance at the end of the period	8,518,000	11,351,000
Unrealized gains (losses) relating to instruments still held at the end of the period	0	0
Loans Held for Investment
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	0	0
Unrealized (loss), net recognized in other non-interest income	(2,216,000)
Paydown of asset	(549,000)
Balance at the end of the period	4,895,000	0
Unrealized gains (losses) relating to instruments still held at the end of the period	0	0
Discontinued Operations | Commitments to lend
Derivative Asset (Liability)
Unrealized (loss), net recognized in other non-interest income	11,039,000	11,221,000
Discontinued Operations | Trading Security
Changes in Level 3 assets that were measured at fair value on a recurring basis
Unrealized (loss), net recognized in other non-interest income		0
Discontinued Operations | Capitalized servicing rights
Changes in Level 3 assets that were measured at fair value on a recurring basis
Unrealized (loss), net recognized in other non-interest income	(3,781,000)	$ (1,142,000)
Accounting Standards Update 2016-13 | Loans Held for Investment
Changes in Level 3 assets that were measured at fair value on a recurring basis
Adoption of ASC 326	$ 7,660,000

FAIR VALUE MEASUREMENTS - Unobs

FAIR VALUE MEASUREMENTS - Unobservable Inputs Recurring (Details) $ in Thousands	Mar. 31, 2020USD ($)$ / contract	Dec. 31, 2019USD ($)
Quantitative information about the significant unobservable inputs within Level 3
Trading security	$ 9,829	$ 10,769
Securities available for sale, at fair value	1,403,858	1,311,555
Level 3
Quantitative information about the significant unobservable inputs within Level 3
Securities available for sale, at fair value	34,504	43,982
Level 3 | Recurring
Quantitative information about the significant unobservable inputs within Level 3
Trading security	9,829	10,769
Securities available for sale, at fair value	34,504	42,966
Loans held for investment	4,895
Total	$ 62,582	$ 68,662
Level 3 | Recurring | Discounted Cash Flow | Discount rate
Quantitative information about the significant unobservable inputs within Level 3
Trading security, significant unobservable input value	0.0102	0.0221
Loan held for investment, measurement input	0.3000
Level 3 | Recurring | Commitments to lend
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset	$ 4,836	$ 2,628
Level 3 | Recurring | Commitments to lend | Historical Trend | Closing Ratio
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset, significant unobservable input value	0.8022	0.7781
Level 3 | Recurring | Commitments to lend | Pricing Model | Origination Costs, per loan
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset, significant unobservable input value | $ / contract	3,137
Level 3 | Recurring | Capitalized servicing rights
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset	$ 8,518	$ 12,299
Level 3 | Recurring | Capitalized servicing rights | Discounted Cash Flow | Discount rate
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1021	0.1000
Level 3 | Recurring | Capitalized servicing rights | Discounted Cash Flow | Constant prepayment rate (CPR)
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.2399	0.1150
Minimum | Level 3 | Recurring | Discounted Cash Flow | Collateral Value
Quantitative information about the significant unobservable inputs within Level 3
Loan held for investment, measurement input	7,900
Minimum | AFS Securities | Level 3 | Recurring | Indication from Market Maker | Price
Quantitative information about the significant unobservable inputs within Level 3
Debt securities, available-for-sale, measurement input	0.9400	0.9700
Maximum | Level 3 | Recurring | Discounted Cash Flow | Collateral Value
Quantitative information about the significant unobservable inputs within Level 3
Loan held for investment, measurement input	31,100
Maximum | AFS Securities | Level 3 | Recurring | Indication from Market Maker | Price
Quantitative information about the significant unobservable inputs within Level 3
Debt securities, available-for-sale, measurement input	0.96	1

FAIR VALUE MEASUREMENTS - Mea_2

FAIR VALUE MEASUREMENTS - Measured on Non-recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned	$ 224	$ 0
Non-recurring | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated loans	15,586	8,831
Capitalized servicing rights	13,720	14,152
Other real estate owned	224	0
Total	$ 29,530	$ 22,983

FAIR VALUE MEASUREMENTS - Uno_2

FAIR VALUE MEASUREMENTS - Unobservable Inputs Non-recurring (Details) $ in Thousands	Mar. 31, 2020USD ($)$ / contract	Dec. 31, 2019USD ($)$ / contract
Quantitative information about the significant unobservable inputs within Level 3
Other Real Estate Owned	$ 224	$ 0
Non-recurring | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated loans	15,586	8,831
Capitalized servicing rights	13,720	14,152
Other Real Estate Owned	224	0
Total	29,530	22,983
Non-recurring | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated loans	$ 15,586	$ 8,831
Non-recurring | Minimum | Loss severity | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value	0.1441	0.1572
Non-recurring | Minimum | Appraised value | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value | $ / contract	6,200	8,200
Non-recurring | Maximum | Loss severity | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value	0.2383	0.0012
Non-recurring | Maximum | Appraised value | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value | $ / contract	1,347,000	1,548,000
Non-recurring | Weighted Average | Loss severity | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value	0.0334	0.0450
Non-recurring | Weighted Average | Appraised value | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value | $ / contract	658,000	736,100
Non-recurring | Capitalized servicing rights | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights	$ 13,720	$ 14,152
Non-recurring | Capitalized servicing rights | Minimum | Constant prepayment rate (CPR) | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1020	0.0944
Non-recurring | Capitalized servicing rights | Minimum | Discount rate | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1000	0.1000
Non-recurring | Capitalized servicing rights | Maximum | Constant prepayment rate (CPR) | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1484	0.1412
Non-recurring | Capitalized servicing rights | Maximum | Discount rate | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1230	0.1350
Non-recurring | Capitalized servicing rights | Weighted Average | Constant prepayment rate (CPR) | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1396	0.1225
Non-recurring | Capitalized servicing rights | Weighted Average | Discount rate | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1137	0.1178
Other Real Estate Owned | Non-recurring | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Other Real Estate Owned	$ 224	$ 0
Other Real Estate Owned | Non-recurring | Minimum | Appraised value | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned, significant unobservable input value | $ / contract	40,000
Other Real Estate Owned | Non-recurring | Maximum | Appraised value | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned, significant unobservable input value | $ / contract	120,000
Other Real Estate Owned | Non-recurring | Weighted Average | Appraised value | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned, significant unobservable input value | $ / contract	90,000

FAIR VALUE MEASUREMENTS - Fair

FAIR VALUE MEASUREMENTS - Fair Values and Carrying Amounts (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Financial Assets
Marketable equity securities	$ 32,283	$ 41,556
Securities available for sale	1,403,858	1,311,555
Securities held to maturity	358,416	373,277
FHLB bank stock and restricted securities	54,306	48,019
Level 1
Financial Assets
Cash and cash equivalents	605,420	579,829
Trading security	0	0
Marketable equity securities	31,612	40,499
Securities available for sale	0	0
Securities held to maturity	0	0
Net loans	0	0
Loans held for sale	0	0
Accrued interest receivable	0	0
Derivative assets	0	0
Financial Liabilities
Total deposits	0	0
Short-term debt	0	0
Long-term Federal Home Loan Bank advances	0	0
Subordinated borrowings	0	0
Derivative liabilities	4,490	227
Level 2
Financial Assets
Cash and cash equivalents	0	0
Trading security	0	0
Marketable equity securities	671	1,056
Securities available for sale	1,369,354	1,267,573
Securities held to maturity	354,657	355,513
Net loans	0	0
Loans held for sale	129,975	140,280
Accrued interest receivable	35,427	36,462
Derivative assets	177,708	77,562
Financial Liabilities
Total deposits	10,080,250	10,338,993
Short-term debt	225,866	125,081
Long-term Federal Home Loan Bank advances	727,150	606,381
Subordinated borrowings		101,055
Derivative liabilities	74,511	80,454
Level 3
Financial Assets
Cash and cash equivalents	0	0
Trading security	9,829	10,769
Marketable equity securities	0	0
Securities available for sale	34,504	43,982
Securities held to maturity	3,759	17,764
Net loans	9,469,947	9,653,550
Loans held for sale	0	29,039
Accrued interest receivable	0	0
Derivative assets	4,836	2,628
Financial Liabilities
Total deposits	0	0
Short-term debt	0	0
Long-term Federal Home Loan Bank advances	0	0
Subordinated borrowings	0	0
Derivative liabilities	0	0
Carrying Amount
Financial Assets
Cash and cash equivalents	605,420	579,829
Trading security	9,829	10,769
Marketable equity securities	32,283	41,556
Securities available for sale	1,403,858	1,311,555
Securities held to maturity	336,802	357,979
FHLB bank stock and restricted securities	54,306	48,019
Net loans	9,189,667	9,438,853
Loans held for sale	129,975	169,319
Accrued interest receivable	35,427	36,462
Derivative assets	182,544	80,190
Financial Liabilities
Total deposits	10,071,675	10,335,977
Short-term debt	225,000	125,000
Long-term Federal Home Loan Bank advances	719,053	605,501
Subordinated borrowings	97,107	97,049
Derivative liabilities	79,001	80,681
Fair Value
Financial Assets
Cash and cash equivalents	605,420	579,829
Trading security	9,829	10,769
Marketable equity securities	32,283	41,555
Securities available for sale	1,403,858	1,311,555
Securities held to maturity	358,416	373,277
Net loans	9,469,947	9,653,550
Loans held for sale	129,975	169,319
Accrued interest receivable	35,427	36,462
Derivative assets	182,544	80,190
Financial Liabilities
Total deposits	10,080,250	10,338,993
Short-term debt	225,866	125,081
Long-term Federal Home Loan Bank advances	727,150	606,381
Subordinated borrowings	89,521	101,055
Derivative liabilities	$ 79,001	$ 80,681

NET INTEREST INCOME AFTER PRO_3

NET INTEREST INCOME AFTER PROVISION FOR LOAN LOSSES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Banking and Thrift, Interest [Abstract]
Net interest income from continuing operations	$ 86,428	$ 85,459
Provision for credit losses	34,807	4,001
Net interest income from continuing operations after provision for credit losses	$ 51,621	$ 81,458

Uncategorized Items - bhlb-2020

Label	Element	Value
Accounting Standards Update 2016-13 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	us-gaap_CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	$ (24,380,000)
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss	us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	309,000
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | US States and Political Subdivisions Debt Securities [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss	us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	83,000
Accounting Standards Update 2016-13 [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Tax Advantaged Economic Development Bonds [Member]
Debt Securities, Held-to-maturity, Allowance for Credit Loss	us-gaap_DebtSecuritiesHeldToMaturityAllowanceForCreditLoss	$ 226,000