Berkshire Hills Bancorp (BHLB) 10-Q 10 May 21 2021 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2021	May 06, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
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	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		51,203,211
Entity Central Index Key	0001108134
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets
Cash and due from banks	$ 81,285	$ 91,219
Short-term investments	1,818,323	1,466,656
Total cash and cash equivalents	1,899,608	1,557,875
Trading security, at fair value	9,350	9,708
Marketable equity securities, at fair value	15,801	18,513
Securities available for sale, at fair value	1,627,330	1,695,232
Securities held to maturity (fair values of $627,297 and $491,855)	610,637	465,091
Federal Home Loan Bank stock and other restricted securities	28,680	34,873
Total securities	2,291,798	2,223,417
Less: Allowance for credit losses on held to maturity securities	(111)	(104)
Net securities	2,291,687	2,223,313
Loans held for sale	18,377	17,748
Total loans	7,658,778	8,081,519
Less: Allowance for credit losses on loans	(123,800)	(127,302)
Net loans	7,534,978	7,954,217
Premises and equipment, net	108,538	112,663
Other real estate owned	149	149
Other intangible assets	33,500	34,819
Cash surrender value of bank-owned life insurance policies	234,043	232,695
Other assets	332,766	387,230
Assets from discontinued operations	303,697	317,304
Total assets	12,757,343	12,838,013
Liabilities
Demand deposits	2,750,393	2,484,249
NOW and other deposits	1,856,988	1,003,005
Money market deposits	2,486,261	3,371,353
Savings deposits	1,047,506	972,116
Time deposits	2,103,222	2,385,085
Total deposits	10,244,370	10,215,808
Short-term debt	0	40,000
Long-term Federal Home Loan Bank advances and other	351,354	434,357
Subordinated borrowings	97,338	97,280
Total borrowings	448,692	571,637
Other liabilities	229,832	232,730
Liabilities held for sale	659,310	630,065
Total liabilities	11,582,204	11,650,240
Shareholders’ equity
Common stock ($0.01 par value; 100,000,000 shares authorized and 51,903,190 shares issued and 50,988,285 shares outstanding in 2021; 51,903,190 shares issued and 50,833,087 shares outstanding in 2020)	528	528
Additional paid-in capital - common stock	1,424,349	1,427,239
Unearned compensation	(7,722)	(6,245)
Retained earnings (deficit)	(226,516)	(233,344)
Accumulated other comprehensive income	10,721	30,871
Treasury stock, at cost (914,905 shares in 2021 and 1,070,103 shares in 2020)	(26,221)	(31,276)
Total shareholders’ equity	1,175,139	1,187,773
Total liabilities and shareholders’ equity	$ 12,757,343	$ 12,838,013

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Fair Value	$ 627,297	$ 491,855
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)	50,988,285	50,833,087
Treasury stock (in shares)	914,905	1,070,103

CONSOLIDATED STATEMENTS OF OPER

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest and dividend income from continuing operations
Loans	$ 75,933	$ 101,695
Securities and other	12,220	14,500
Total interest and dividend income	88,153	116,195
Interest expense from continuing operations
Deposits	9,583	23,838
Borrowings	3,477	5,929
Total interest expense	13,060	29,767
Net interest income from continuing operations	75,093	86,428
Non-interest income from continuing operations
Total fee income	24,076	15,802
Other, net	2,148	(436)
(Loss) on securities, net	(31)	(9,730)
Total non-interest income	26,193	5,636
Total net revenue from continuing operations	101,286	92,064
Provision for credit losses	6,500	34,807
Non-interest expense from continuing operations
Compensation and benefits	38,735	36,909
Occupancy and equipment	11,024	11,132
Technology and communications	8,593	8,081
Marketing and promotion	595	1,165
Professional services	6,614	2,720
FDIC premiums and assessments	1,120	1,482
Other real estate owned and foreclosures	2	27
Amortization of intangible assets	1,319	1,580
Acquisition, restructuring, and other expenses	3,486	0
Other	6,666	8,229
Total non-interest expense	78,154	71,325
Income/(loss) from continuing operations before income taxes	16,632	(14,068)
Income tax (benefit)/expense	3,601	(1,996)
Net income/(loss) from continuing operations	13,031	(12,072)
(Loss)/income from discontinued operations before income taxes	0	(10,629)
Income tax (benefit)/expense	0	(2,831)
Net (loss)/income from discontinued operations	0	(7,798)
Net income/(loss)	13,031	(19,870)
Preferred stock dividend	0	125
Income/(loss) available to common shareholders	$ 13,031	$ (19,995)
Basic earnings/(loss) per common share:
Continuing operations (in dollars per share)	$ 0.26	$ (0.24)
Discontinued operations (in dollars per share)	0	(0.16)
Total (in dollars per share)	0.26	(0.40)
Diluted earnings/(loss) per common share:
Continuing operations (in dollars per share)	0.26	(0.24)
Discontinued operations (in dollars per share)	0	(0.16)
Total (in dollars per share)	$ 0.26	$ (0.40)
Weighted average shares outstanding:
Basic (in shares)	50,330	50,204
Diluted (in shares)	50,565	50,204
Deposit related fees
Non-interest income from continuing operations
Total fee income	$ 7,126	$ 7,947
Insurance commissions and fees
Non-interest income from continuing operations
Total fee income	3,130	3,024
Wealth management fees
Non-interest income from continuing operations
Total fee income	2,772	2,570
Mortgage banking originations
Non-interest income from continuing operations
Total fee income	802	959
Loan fees and revenue
Non-interest income from continuing operations
Total fee income	$ 10,246	$ 1,302

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income/(loss)	$ 13,031	$ (19,870)
Other comprehensive income, before tax:
Changes in unrealized gain on debt securities available-for-sale	(27,013)	25,614
Income taxes related to other comprehensive income:
Changes in unrealized gain on debt securities available-for-sale	6,863	(6,590)
Total other comprehensive (loss)/income	(20,150)	19,024
Total comprehensive (loss)	$ (7,119)	$ (846)

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 (deficit)	Accumulated other comprehensive income/(loss)	Treasury stock	Cumulative Effect, Period of Adoption, Adjustment	Cumulative Effect, Period of Adoption, AdjustmentRetained earnings (deficit)
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)	$ (24,380)	$ (24,380)
Comprehensive income (loss)
Net income (loss)	(19,870)					(19,870)
Other comprehensive income (loss)	19,024						19,024
Total comprehensive income (loss)	(846)					(19,870)	19,024
Conversion of preferred stock to common stock (in shares)		(261)	522
Conversion of preferred stock to common stock	0	$ (20,308)	$ 6	5,391				14,911
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)							(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)
Balance at beginning of period (in shares) at Dec. 31, 2020		0	50,833
Balance at beginning of period at Dec. 31, 2020	1,187,773	$ 0	$ 528	1,427,239	(6,245)	(233,344)	30,871	(31,276)
Comprehensive income (loss)
Net income (loss)	13,031					13,031
Other comprehensive income (loss)	(20,150)						(20,150)
Total comprehensive income (loss)	(7,119)					13,031	(20,150)
Cash dividends declared on common shares	(6,124)					(6,124)
Forfeited shares (in shares)			(52)
Forfeited shares				(234)	1,333			(1,099)
Exercise of stock options (in shares)			5
Exercise of stock options	69					(79)		148
Restricted stock grants (in shares)			210
Restricted stock grants				(2,660)	(3,485)			6,145
Stock-based compensation	675				675
Other, net (in shares)			(8)
Other, net	(135)							(139)
Balance at end of period (in shares) at Mar. 31, 2021		0	50,988
Balance at end of period at Mar. 31, 2021	$ 1,175,139	$ 0	$ 528	$ 1,424,349	$ (7,722)	$ (226,516)	$ 10,721	$ (26,221)

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Stockholders' Equity [Abstract]
Common stock, cash dividends declared (in dollars per share)	$ 0.12	$ 0.24
Preferred stock, cash dividends declared (in dollars per share)		$ 0.48

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income/(loss) from continuing operations	$ 13,031	$ (12,072)
Net (loss) from discontinued operations	0	(7,798)
Net income/(loss)	13,031	(19,870)
Adjustments to reconcile net income/(loss) to net cash provided by operating activities:
Provision for credit losses	6,500	34,807
Net amortization of securities	389	762
Change in unamortized net loan costs and premiums	(2,755)	386
Premises and equipment depreciation and amortization expense	2,839	2,680
Stock-based compensation expense	675	1,459
Accretion of purchase accounting entries, net	(1,305)	(3,121)
Amortization of other intangibles	1,319	1,580
Income from cash surrender value of bank-owned life insurance policies	(1,348)	(1,106)
Securities losses, net	31	9,730
Net change in loans held-for-sale	3,938	4,472
Loss on disposition of assets	2,811	0
Amortization of interest in tax-advantaged projects	33	486
Net change in other	(2,584)	(11,571)
Net cash provided by operating activities of continuing operations	23,574	28,492
Net cash provided (used) by operating activities of discontinued operations	0	6,560
Net cash provided by operating activities	23,574	35,052
Cash flows from investing activities:
Net decrease in trading security	192	181
Purchases of marketable equity securities	0	(11,437)
Proceeds from sales of marketable equity securities	2,849	12,329
Purchases of securities available for sale	(103,877)	(160,925)
Proceeds from sales of securities available for sale	0	3,520
Proceeds from maturities, calls, and prepayments of securities available for sale	166,998	90,758
Purchases of securities held to maturity	(155,417)	0
Proceeds from maturities, calls, and prepayments of securities held to maturity	9,377	20,372
Net change in loans	412,255	217,429
Net change in Mid-Atlantic region loans held for sale	16,830	0
Proceeds from surrender of bank-owned life insurance	0	553
Purchase of Federal Home Loan Bank stock	0	(6,741)
Proceeds from redemption of Federal Home Loan Bank stock	6,193	454
Net investment in limited partnership tax credits	0	(2,783)
Purchase of premises and equipment, net	(2,297)	(3,386)
Net cash provided by investing activities	353,103	160,324
Cash flows from financing activities:
Net increase/(decrease) in deposits	28,562	(262,203)
Net increase in Mid-Atlantic region deposits held for sale	29,245	0
Proceeds from Federal Home Loan Bank advances and other borrowings	0	315,854
Repayments of Federal Home Loan Bank advances and other borrowings	(123,022)	(102,382)
Purchase of treasury stock	0	(473)
Exercise of stock options	69	519
Common and preferred stock cash dividends paid	(6,124)	(12,175)
Settlement of derivative contracts with financial institution counterparties	36,326	(108,925)
Net cash used by financing activities	(34,944)	(169,785)
Net change in cash and cash equivalents	341,733	25,591
Cash and cash equivalents at beginning of period	1,557,875	579,829
Cash and cash equivalents at end of period	1,899,608	605,420
Supplemental cash flow information:
Interest paid on deposits	10,149	26,830
Interest paid on borrowed funds	3,655	6,033
Income taxes (refunded) paid, net	(2,386)	178
Other non-cash changes:
Other net comprehensive income	(20,150)	19,024
Unsettled transactions related to security purchases	22,126	0
Reclass of seasoned loan portfolios to held-for-sale, net	9,500	27,940
Real estate owned acquired in settlement of loans	0	224
Retained earnings (deficit)
Cash flows from operating activities:
Net income/(loss)	13,031	(19,870)
Retained earnings (deficit) | Cumulative Effect, Period of Adoption, Adjustment
Other non-cash changes:
Impact to retained earnings from adoption of ASC 326, net of tax	$ 0	$ 24,380

BASIS OF PRESENTATION

BASIS OF PRESENTATION	3 Months Ended
	Mar. 31, 2021
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, 2020. In management’s opinion, all adjustments necessary for a fair statement are reflected in the interim periods. Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements. Actual results could differ from those estimates. Refer to Note 10 – Other Commitments, Contingencies, and Off-Balance Sheet Activities for pandemic related risks and uncertainties. Recently Adopted Accounting Principles 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. As ASU No. 2018-14 only revises disclosure requirements, the adoption did not have a material impact on the Company’s 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 adoption of ASU No. 2019-12 did not have a material impact on the Company's 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 are to be applied prospectively. The adoption of ASU No. 2020-01 did not have a material impact on the Company's Consolidated Financial Statements. In January 2021, the FASB issued ASU No. 2021-01, “Reference Rate Reform (Topic 848): Scope.” ASU No. 2021-01 clarifies that certain optional expedients and exceptions in ASC 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. ASU No. 2021-01 also amends the expedients and exceptions in ASC 848 to capture the incremental consequences of the scope clarification and to tailor the existing guidance to derivative instruments affected by the discounting transition. ASU No. 2021-01 was effective upon issuance and generally can be applied through December 31, 2022. The adoption of ASU 2021-01 did not significantly impact the Company’s Consolidated Financial Statements. Future Application of Accounting Pronouncements 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 AND HEL

DISCONTINUED OPERATIONS AND HELD FOR SALE	3 Months Ended
	Mar. 31, 2021
Discontinued Operations and Disposal Groups [Abstract]
DISCONTINUED OPERATIONS AND HELD FOR SALE	DISCONTINUED OPERATIONS AND HELD FOR SALE 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 continued to operate and serve its customers as the Company initiated the process of identifying a buyer. 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 Operations, 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. During the fourth quarter of 2020, the Company completed the final wind-down of the operations of FCLS. Operating results for the year ended December 31, 2020, include expenses related to the wind-down of operations. As of March 31, 2021 and December 31, 2020, there were no assets or liabilities related to the discontinued operations of FCLS. The following presents operating results of the discontinued operations of FCLS for the three months ended March 31, 2021 and March 31, 2020: Three Months Ended March 31, (In thousands) 2021 2020 Interest income $ — $ 729 Interest expense — 282 Net interest income — 447 Non-interest income — 1,358 Total net revenue — 1,805 Non-interest expense — 12,434 (Loss) from discontinued operations before income taxes — (10,629) Income tax (benefit) — (2,831) Net (loss) from discontinued operations $ — $ (7,798) Mid-Atlantic Branch Sale The Company has entered into an agreement to sell its eight Mid-Atlantic branches to Investors Bank of Short Hills, New Jersey, subject to customary regulatory approvals. The transfer is targeted for completion in the first half of 2021. The branch sale includes loans with a total balance of $284 million and deposit accounts with a total balance of $647 million as of March 31, 2021. These balances are included in assets held for sale and liabilities held for sale on the Consolidated Balance Sheets. The buyer has agreed to pay a premium equal to 3.0% of the final deposit balance transferred. The sale includes all branch premises and equipment, and the agreement provides that the buyer intends to offer employment to all associated staff. Berkshire expects to complete the net transfer with funds from short-term investments. The branch sale will have no effect on Berkshire’s Mid-Atlantic specialized commercial lending operations, including SBA lending at its 44 Business Capital Division and its asset-based lending relationships. The following is a summary of the assets and liabilities related to the branch sale at March 31, 2021 and December 31, 2020: (In thousands) March 31, 2021 December 31, 2020 Assets Loans $ 283,769 $ 300,599 Other assets 19,928 16,705 Total assets $ 303,697 $ 317,304 Liabilities Deposits $ 646,622 $ 617,377 Other liabilities 12,688 12,688 Total liabilities $ 659,310 $ 630,065

TRADING SECURITY

TRADING SECURITY	3 Months Ended
	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
TRADING SECURITY	TRADING SECURITYThe Company holds a tax-advantaged economic development bond accounted for at fair value. The security had an amortized cost of $8.5 million and $8.7 million, and a fair value of $9.3 million and $9.7 million, at March 31, 2021 and December 31, 2020, 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, 2021 or December 31, 2020.

SECURITIES AVAILABLE FOR SALE,

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES	3 Months Ended
	Mar. 31, 2021
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 Gross Fair Value Allowance March 31, 2021 Securities available for sale Municipal bonds and obligations $ 83,922 $ 6,378 $ — $ 90,300 $ — Agency collateralized mortgage obligations 713,215 14,922 (3,583) 724,554 — Agency mortgage-backed securities 453,042 2,813 (8,659) 447,196 — Agency commercial mortgage-backed securities 267,596 4,020 (3,101) 268,515 — Corporate bonds 44,294 729 (9) 45,014 — Other bonds and obligations 50,691 1,068 (8) 51,751 — Total securities available for sale 1,612,760 29,930 (15,360) 1,627,330 — Securities held to maturity Municipal bonds and obligations 266,609 16,884 (592) 282,901 71 Agency collateralized mortgage obligations 151,092 4,764 (1,054) 154,802 — Agency mortgage-backed securities 65,052 155 (1,682) 63,525 — Agency commercial mortgage-backed securities 124,379 398 (2,288) 122,489 — Tax advantaged economic development bonds 3,210 75 — 3,285 40 Other bonds and obligations 295 — — 295 — Total securities held to maturity 610,637 22,276 (5,616) 627,297 111 Marketable equity securities 15,707 218 (124) 15,801 — Total $ 2,239,104 $ 52,424 $ (21,100) $ 2,270,428 $ 111 (In thousands) Amortized Cost Gross Gross Fair Value Allowance December 31, 2020 Securities available for sale Municipal bonds and obligations $ 90,273 $ 7,530 $ — $ 97,803 $ — Agency collateralized mortgage obligations 740,225 16,836 (235) 756,826 — Agency mortgage-backed securities 433,311 4,954 (133) 438,132 — Agency commercial mortgage-backed securities 278,990 9,835 (175) 288,650 — Corporate bonds 59,098 942 (10) 60,030 — Other bonds and obligations 52,080 1,719 (8) 53,791 — Total securities available for sale 1,653,977 41,816 (561) 1,695,232 — Securities held to maturity Municipal bonds and obligations 246,520 20,106 — 266,626 64 Agency collateralized mortgage obligations 153,561 5,989 (171) 159,379 — Agency mortgage-backed securities 35,865 198 (29) 36,034 — Agency commercial mortgage-backed securities 25,481 590 (12) 26,059 — Tax advantaged economic development bonds 3,369 93 — 3,462 40 Other bonds and obligations 295 — — 295 — Total securities held to maturity 465,091 26,976 (212) 491,855 104 Marketable equity securities 18,061 767 (315) 18,513 — Total $ 2,137,129 $ 69,559 $ (1,088) $ 2,205,600 $ 104 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, 2021 and 2020: (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2020 $ 64 $ 40 $ 104 Provision for credit losses 7 — 7 Balance at March 31, 2021 $ 71 $ 40 $ 111 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2019 $ — $ — $ — Impact of ASC 326 adoption 83 226 309 Provision for credit losses - reversal — (168) (168) Balance at March 31, 2020 $ 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 decisions. 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, 2021, 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, 2021 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 $ 31,134 $ 31,147 $ 1,872 $ 1,874 Over 1 year to 5 years 7,206 7,331 4,270 4,317 Over 5 years to 10 years 51,953 53,260 23,311 24,210 Over 10 years 88,614 95,327 240,661 256,080 Total bonds and obligations 178,907 187,065 270,114 286,481 Mortgage-backed securities 1,433,853 1,440,265 340,523 340,816 Total $ 1,612,760 $ 1,627,330 $ 610,637 $ 627,297 During the three months ended March 31, 2021, purchases of AFS securities totaled $103.9 million. During the three months ended March 31, 2021, there were no sales of AFS securities. 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, 2021, there were no gross gains or losses on AFS securities. During the three months ended March 31,2020, there were no gross gains on AFS securities and gross losses totaled $1 thousand. These gains and losses are included in gain/(loss) on securities, net on the consolidated statements of operations. 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, 2021 Securities available for sale Agency collateralized mortgage obligations $ 3,583 $ 150,110 $ — $ — $ 3,583 $ 150,110 Agency mortgage-backed securities 8,654 346,395 5 384 8,659 346,779 Agency commercial mortgage-backed securities 3,101 132,234 — — 3,101 132,234 Corporate bonds — — 9 4,876 9 4,876 Other bonds and obligations — — 8 981 8 981 Total securities available for sale $ 15,338 $ 628,739 $ 22 $ 6,241 $ 15,360 $ 634,980 Securities held to maturity Municipal bonds and obligations $ 592 $ 23,359 $ — $ — $ 592 $ 23,359 Agency collateralized mortgage obligations 1,054 83,449 — — 1,054 83,449 Agency mortgage-backed securities 1,682 59,167 — — 1,682 59,167 Agency commercial mortgage-backed securities 2,288 103,015 — — 2,288 103,015 Total securities held to maturity 5,616 268,990 — — 5,616 268,990 Total $ 20,954 $ 897,729 $ 22 $ 6,241 $ 20,976 $ 903,970 December 31, 2020 Securities available for sale Agency collateralized mortgage obligations $ 235 $ 77,898 $ — $ — $ 235 $ 77,898 Agency mortgage-backed securities 131 39,939 2 256 133 40,195 Agency commercial mortgage-backed securities 175 51,435 — — 175 51,435 Corporate bonds 10 4,875 — — 10 4,875 Other bonds and obligations — — 8 1,030 8 1,030 Total securities available for sale $ 551 $ 174,147 $ 10 $ 1,286 $ 561 $ 175,433 Securities held to maturity Agency collateralized mortgage obligations $ 171 $ 25,048 $ — $ — $ 171 $ 25,048 Agency mortgage-backed securities 29 20,710 — — 29 20,710 Agency commercial mortgage-backed securities 12 10,216 — — 12 10,216 Total securities held to maturity 212 55,974 — — 212 55,974 Total $ 763 $ 230,121 $ 10 $ 1,286 $ 773 $ 231,407 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, 2021, 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, 2021: AFS collateralized mortgage obligations At March 31, 2021, 25 of the 256 securities in the Company’s portfolio of AFS collateralized mortgage obligations were in unrealized loss positions. Aggregate unrealized losses represented 2.2% 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 commercial and residential mortgage-backed securities At March 31, 2021, 33 of the 125 securities in the Company’s portfolio of AFS mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 2.4% 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, 2021, 1 of the 14 securities in the Company’s portfolio of AFS corporate bonds was in an unrealized loss position. Aggregate unrealized losses represents 0.2% of the amortized cost of the bond in an unrealized loss position. 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, 2021, 3 of the 6 securities in the Company’s portfolio of other bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 0.9% 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. HTM municipal bonds and obligations At March 31, 2021, 15 of the 207 securities in the Company’s portfolio of HTM municipal bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 2.5% 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. HTM collateralized mortgage obligations At March 31, 2021, 5 of the 13 securities in the Company’s portfolio of HTM collateralized mortgage obligations were in unrealized loss positions. Aggregate unrealized losses represented 1.3% of the amortized cost of the securities in unrealized loss positions. The FNMA, FHLMC, and GNMA guarantee the contractual cash flows of all of the Company's collateralized residential mortgage obligations. The securities are investment grade rated, and there were no material underlying credit downgrades during the quarter. All securities are performing. HTM commercial and residential mortgage-backed securities At March 31, 2021, 12 out of 14 securities in the Company’s portfolio of HTM mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 2.3% of the amortized cost of securities in unrealized loss positions. The FNMA, FHLMC, and GNMA guarantee the contractual cash flows 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.

LOANS AND ALLOWANCE FOR CREDIT

LOANS AND ALLOWANCE FOR CREDIT LOSSES	3 Months Ended
	Mar. 31, 2021
Credit Loss [Abstract]
LOANS AND ALLOWANCE FOR CREDIT LOSSES	LOANS AND ALLOWANCE FOR CREDIT LOSSES 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, 2021 December 31, 2020 Construction $ 454,388 $ 454,513 Commercial multifamily 483,646 483,350 Commercial real estate owner occupied 556,286 552,413 Commercial real estate non-owner occupied 2,129,572 2,119,263 Commercial and industrial 1,719,304 1,943,164 Residential real estate 1,774,504 1,931,681 Home equity 279,017 293,981 Consumer other 262,061 303,154 Total loans $ 7,658,778 $ 8,081,519 Allowance for credit losses 123,800 127,302 Net loans $ 7,534,978 $ 7,954,217 As of March 31, 2021, outstanding loans originated under the Small Business Administration ("SBA") Paycheck Protection Program ("PPP") totaled $444.2 million. T hese loans are 100% guaranteed by the SBA and the full principal amount of the loan may qualify for forgiveness. These loans are included in commercial and industrial. During the three months ended March 31, 2021, the Company reclassified $9.5 million of commercial loans, reflecting its intent to sell these loans. These loans are not contained in the balances within this note and are accounted for at the lower of carrying value or fair market value. Risk characteristics relevant to each portfolio segment are as follows: 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 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. 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. 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 with a 1 year reversion 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 effect of other economic factors such as economic stimulus and customer forbearance programs. 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, 2021 and 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, 2021 Construction $ 5,111 $ — $ 5,111 $ — $ — $ (714) $ 4,397 Commercial multifamily 5,916 — 5,916 (124) 62 497 6,351 Commercial real estate owner occupied 12,380 — 12,380 (376) 12 2,241 14,257 Commercial real estate non-owner occupied 35,850 — 35,850 (6,658) 126 5,243 34,561 Commercial and industrial 25,013 — 25,013 (3,320) 644 3,734 26,071 Residential real estate 28,491 — 28,491 (377) 437 (2,751) 25,800 Home equity 6,482 — 6,482 (77) 24 (680) 5,749 Consumer other 8,059 — 8,059 (528) 160 (1,077) 6,614 Total allowance for credit losses $ 127,302 $ — $ 127,302 $ (11,460) $ 1,465 $ 6,493 $ 123,800 (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 Commercial 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 20,099 (2,189) 17,910 (4,916) 1,402 10,106 24,502 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, 2021 and March 31, 2020 was as follows: Three Months Ended (In thousands) 2021 2020 Balance at beginning of period $ 7,629 $ 100 Impact of adopting ASC 326 — 7,993 Sub-Total 7,629 8,093 Expense for credit losses 200 330 Balance at end of period $ 7,829 $ 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, including 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) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of March 31, 2021 Construction Risk rating Pass $ 25,422 $ 43,662 $ 275,525 $ 65,371 $ 27,177 $ 2,501 $ 1,000 $ — $ 440,658 Special Mention — — — 313 — — — — 313 Substandard — — — 9,429 3,988 — — — 13,417 Total $ 25,422 $ 43,662 $ 275,525 $ 75,113 $ 31,165 $ 2,501 $ 1,000 $ — $ 454,388 Commercial multifamily: Risk rating Pass $ 17,100 $ 31,295 $ 55,210 $ 74,123 $ 78,148 $ 219,175 $ 61 $ — $ 475,112 Special Mention — — 2,187 — — — — — 2,187 Substandard — — — — — 6,204 143 — 6,347 Total $ 17,100 $ 31,295 $ 57,397 $ 74,123 $ 78,148 $ 225,379 $ 204 $ — $ 483,646 Commercial real estate owner occupied: Risk rating Pass $ 13,652 $ 53,164 $ 81,473 $ 99,224 $ 63,148 $ 218,342 $ 1,506 $ — $ 530,509 Special Mention — 535 3,389 1,136 1,966 2,432 — — 9,458 Substandard — — 1,266 3,333 1,627 10,093 — — 16,319 Total $ 13,652 $ 53,699 $ 86,128 $ 103,693 $ 66,741 $ 230,867 $ 1,506 $ — $ 556,286 Commercial real estate non-owner occupied: Risk rating Pass $ 77,638 $ 174,898 $ 292,528 $ 469,718 $ 218,525 $ 725,223 $ 17,394 $ — $ 1,975,924 Special Mention — 231 270 2,971 6,904 58,403 1,059 — 69,838 Substandard — 7,804 3,529 3,730 20,135 48,418 194 — 83,810 Total $ 77,638 $ 182,933 $ 296,327 $ 476,419 $ 245,564 $ 832,044 $ 18,647 $ — $ 2,129,572 Commercial and industrial: Risk rating Pass $ 25,240 $ 563,757 $ 131,781 $ 203,153 $ 110,240 $ 182,949 $ 372,075 $ — $ 1,589,195 Special Mention — 1,952 9,887 7,477 3,881 4,011 10,806 — 38,014 Substandard 146 8,807 37,772 22,909 6,826 7,857 7,456 — 91,773 Doubtful — — — — — — 322 — 322 Total $ 25,386 $ 574,516 $ 179,440 $ 233,539 $ 120,947 $ 194,817 $ 390,659 $ — $ 1,719,304 Residential real estate Risk rating Pass $ 55,071 $ 148,622 $ 127,817 $ 218,785 $ 273,160 $ 931,322 $ 3,261 $ — $ 1,758,038 Special Mention — — — — 284 814 — — 1,098 Substandard — 700 31 1,836 2,434 10,367 — — 15,368 Total $ 55,071 $ 149,322 $ 127,848 $ 220,621 $ 275,878 $ 942,503 $ 3,261 $ — $ 1,774,504 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 December 31, 2020 Construction Risk rating Pass $ 38,374 $ 255,377 $ 114,690 $ 28,474 $ 9,519 $ 2,766 $ 1,000 $ — $ 450,200 Special Mention — — 313 — — — — — 313 Substandard — — — 4,000 — — — — 4,000 Total $ 38,374 $ 255,377 $ 115,003 $ 32,474 $ 9,519 $ 2,766 $ 1,000 $ — $ 454,513 Commercial multifamily: Risk rating Pass $ 31,438 $ 57,659 $ 74,932 $ 77,746 $ 81,066 $ 153,818 $ 20 $ — $ 476,679 Special Mention — — — — — — — — — Substandard — — — — 47 6,479 145 — 6,671 Total $ 31,438 $ 57,659 $ 74,932 $ 77,746 $ 81,113 $ 160,297 $ 165 $ — $ 483,350 Commercial real estate owner occupied: Risk rating Pass $ 58,327 $ 84,839 $ 104,797 $ 64,693 $ 44,300 $ 169,197 $ 1,194 $ — $ 527,347 Special Mention 535 2,569 1,136 1,009 800 2,579 — — 8,628 Substandard — 1,266 3,597 1,685 1,439 8,451 — — 16,438 Total $ 58,862 $ 88,674 $ 109,530 $ 67,387 $ 46,539 $ 180,227 $ 1,194 $ — $ 552,413 Commercial real estate non-owner occupied: Risk rating Pass $ 180,520 $ 292,386 $ 435,440 $ 223,935 $ 303,221 $ 497,066 $ 15,393 $ — $ 1,947,961 Special Mention — 279 2,068 6,958 11,798 44,961 1,068 — 67,132 Substandard 7,804 3,529 4,235 19,632 2,124 66,651 195 — 104,170 Total $ 188,324 $ 296,194 $ 441,743 $ 250,525 $ 317,143 $ 608,678 $ 16,656 $ — $ 2,119,263 Commercial and industrial: Risk rating Pass $ 754,260 $ 159,046 $ 205,651 $ 130,985 $ 48,326 $ 148,222 $ 368,769 $ — $ 1,815,259 Special Mention 1,467 5,753 5,267 2,851 1,601 65 12,408 — 29,412 Substandard 7,392 39,822 24,951 7,765 3,504 5,630 9,099 — 98,163 Doubtful — — — — — — 330 — 330 Total $ 763,119 $ 204,621 $ 235,869 $ 141,601 $ 53,431 $ 153,917 $ 390,606 $ — $ 1,943,164 Residential real estate Risk rating Pass $ 150,583 $ 146,142 $ 272,399 $ 320,384 $ 333,159 $ 691,078 $ 3,281 $ — $ 1,917,026 Special Mention 384 — 454 1,430 — 362 — — 2,630 Substandard 991 39 703 902 417 8,964 9 — 12,025 Total $ 151,958 $ 146,181 $ 273,556 $ 322,716 $ 333,576 $ 700,404 $ 3,290 $ — $ 1,931,681 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) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of March 31, 2021 Home equity: Payment performance Performing $ 703 $ 2,623 $ 1,469 $ 309 $ 1,829 $ 2,234 $ 267,103 $ — $ 276,270 Nonperforming — — — — — — 2,747 — 2,747 Total $ 703 $ 2,623 $ 1,469 $ 309 $ 1,829 $ 2,234 $ 269,850 $ — $ 279,017 Consumer other: Payment performance Performing $ 4,870 $ 14,084 $ 30,924 $ 87,205 $ 57,753 $ 54,399 $ 7,965 $ — $ 257,200 Nonperforming — 69 381 1,325 1,457 1,619 10 — 4,861 Total $ 4,870 $ 14,153 $ 31,305 $ 88,530 $ 59,210 $ 56,018 $ 7,975 $ — $ 262,061 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 December 31, 2020 Home equity: Payment performance Performing $ 2,445 $ 1,960 $ 316 $ 1,859 $ 499 $ 1,882 $ 282,123 $ — $ 291,084 Nonperforming — — 1 — — — 2,896 — 2,897 Total $ 2,445 $ 1,960 $ 317 $ 1,859 $ 499 $ 1,882 $ 285,019 $ — $ 293,981 Consumer other: Payment performance Performing $ 15,193 $ 35,317 $ 101,730 $ 69,366 $ 35,421 $ 31,327 $ 9,339 $ — $ 297,693 Nonperforming 39 316 1,511 1,599 1,585 407 4 — 5,461 Total $ 15,232 $ 35,633 $ 103,241 $ 70,965 $ 37,006 $ 31,734 $ 9,343 $ — $ 303,154 The following is a summary of loans by past due status at March 31, 2021 and December 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, 2021 Construction $ 3,988 $ — $ — $ 3,988 $ 450,400 $ 454,388 Commercial multifamily — — 4,068 4,068 479,578 483,646 Commercial real estate owner occupied 6,174 487 4,610 11,271 545,015 556,286 Commercial real estate non-owner occupied 703 — 21,790 22,493 2,107,079 2,129,572 Commercial and industrial 9,479 1,540 9,486 20,505 1,698,799 1,719,304 Residential real estate 2,990 1,098 14,476 18,564 1,755,940 1,774,504 Home equity 647 159 2,747 3,553 275,464 279,017 Consumer other 1,052 248 4,764 6,064 255,997 262,061 Total $ 25,033 $ 3,532 $ 61,941 $ 90,506 $ 7,568,272 $ 7,658,778 (In thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans December 31, 2020 Construction $ — $ — $ — $ — $ 454,513 $ 454,513 Commercial multifamily — — 757 757 482,593 483,350 Commercial real estate owner occupied 809 631 4,894 6,334 546,079 552,413 Commercial real estate non-owner occupied 315 168 38,389 38,872 2,080,391 2,119,263 Commercial and industrial 3,016 3,259 12,982 19,257 1,923,907 1,943,164 Residential real estate 2,068 2,630 11,115 15,813 1,915,868 1,931,681 Home equity 244 284 2,897 3,425 290,556 293,981 Consumer other 2,109 777 5,364 8,250 294,904 303,154 Total $ 8,561 $ 7,749 $ 76,398 $ 92,708 $ 7,988,811 $ 8,081,519 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, 2021 and December 31, 2020: (In thousands) 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, 2021 Construction $ — $ — $ — $ — Commercial multifamily 4,068 4,068 — — Commercial real estate owner occupied 4,232 1,832 378 — Commercial real estate non-owner occupied 18,856 11,691 2,934 — Commercial and industrial 9,364 3,005 122 — Residential real estate 11,941 7,419 2,535 — Home equity 2,599 211 148 — Consumer other 4,757 8 7 — Total $ 55,817 $ 28,234 $ 6,124 $ — The commercial and industrial loans nonaccrual amortized cost as of March 31, 2021 included medallion loans with a fair value of $1.4 million and a contractual balance of $45.0 million. (In thousands) 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 December 31, 2020 Construction $ — $ — $ — $ — Commercial multifamily 757 591 — — Commercial real estate owner occupied 4,509 2,290 385 — Commercial real estate non-owner occupied 29,572 13,912 8,817 — Commercial and industrial 12,441 4,725 541 — Residential real estate 9,711 5,739 1,404 — Home equity 2,654 159 243 — Consumer other 5,304 2 60 — Total $ 64,948 $ 27,418 $ 11,450 $ — The commercial and industrial loans nonaccrual amortized cost as of December 31, 2020 included medallion loans with a fair value of $2.3 million and a contractual balance of $53.9 million. The following table summarizes information about total loans rated Special Mention or lower at March 31, 2021 and December 31, 2020. The table below includes consumer loans that are Special Mention and Substandard accruing that are classified as performing based on payment activity. (In thousands) March 31, 2021 December 31, 2020 Non-Accrual $ 55,817 $ 64,948 Substandard Accruing 179,150 185,207 Total Classified 234,967 250,155 Special Mention 121,437 109,299 Total Criticized $ 356,404 $ 359,454 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, 2021 Construction $ — $ — $ — Commercial multifamily 4,070 — — Commercial real estate owner occupied 5,351 — — Commercial real estate non-owner occupied 20,805 — — Commercial and industrial 1,361 18 977 Residential real estate 7,048 — — Home equity 198 — — Consumer other 34 — — Total loans $ 38,867 $ 18 $ 977 December 31, 2020 Construction $ — $ — $ — Commercial multifamily 591 — — Commercial real estate owner occupied 5,714 — — Commercial real estate non-owner occupied 30,950 — — Commercial and industrial 973 36 3,758 Residential real estate 5,081 — — Home equity 145 — — Consumer other 51 — — Total loans $ 43,505 $ 36 $ 3,758 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, 2021 and March 31, 2020: (In thousands) Balance at Beginning of Period Principal Payments TDR Status Change Other Additions/(Reductions) Newly Identified TDRs Balance at End of Period Three months ended March 31, 2021 Construction $ — $ — $ — $ — $ — $ — Commercial multifamily 754 (13) — — — 741 Commercial real estate owner occupied 1,731 (6) — — — 1,725 Commercial real estate non-owner occupied 13,684 (14) — 511 544 14,725 Commercial and industrial 2,686 (199) — — 146 2,633 Residential real estate 1,524 (31) — — — 1,493 Home equity 133 (3) — — — 130 Consumer other 36 (2) — — — 34 Total $ 20,548 $ (268) $ — $ 511 $ 690 $ 21,481 (In thousands) Balance at Beginning of Period Principal Payments TDR Status Change Other Additions/(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 1,449 (37) — — 902 2,314 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, 2021 and March 31, 2020: (dollars in thousands) Total Three months ended March 31, 2021 TDR: Number of loans 4 Pre-modification outstanding recorded investment $ 690 Post-modification outstanding recorded investment $ 690 Three months ended March 31, 2020 TDR: Number of loans 3 Pre-modification outstanding recorded investment $ 902 Post-modification outstanding recorded investment $ 902 There were no TDRs for which there was a payment default within twelve months following the modification during the three months ended March 31, 2021 and March 31, 2020. Beginning in March 2020, the Company has 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. Refer to Note 10 - Other Commitments, Contingencies, and Off-Balance Sheet Activities for more information regarding these modifications.

DEPOSITS

DEPOSITS	3 Months Ended
	Mar. 31, 2021
Deposits [Abstract]
DEPOSITS	DEPOSITS A summary of time deposits is as follows: (In thousands) March 31, December 31, Time less than $100,000 $ 630,244 $ 663,324 Time $100,000 through $250,000 999,329 1,219,210 Time more than $250,000 473,649 502,551 Total time deposits $ 2,103,222 $ 2,385,085 Included in total deposits are brokered deposits of $431.5 million and $610.6 million at March 31, 2021 and December 31, 2020, respectively. Included in total deposits are reciprocal deposits of $100.7 million and $119.0 million at March 31, 2021 and December 31, 2020, respectively.

BORROWED FUNDS

BORROWED FUNDS	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
BORROWED FUNDS	BORROWED FUNDS Borrowed funds at March 31, 2021 and December 31, 2020 are summarized, as follows: March 31, 2021 December 31, 2020 Weighted Weighted Average Average (Dollars in thousands) Principal Rate Principal Rate Short-term borrowings: Advances from the FHLB $ — — % $ 40,000 1.05 % Total short-term borrowings: — — 40,000 1.05 Long-term borrowings: Advances from the FHLB and other borrowings 351,354 1.88 434,357 1.89 Subordinated borrowings 74,455 7.00 74,411 7.00 Junior subordinated borrowing - Trust I 15,464 2.03 15,464 2.06 Junior subordinated borrowing - Trust II 7,419 1.88 7,405 1.92 Total long-term borrowings: 448,692 2.73 531,637 2.61 Total $ 448,692 2.73 % $ 571,637 2.50 % 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, 2021 and December 31, 2020. The Bank's available borrowing capacity with the FHLB was $1.4 billion and $1.6 billion for the periods ended March 31, 2021 and December 31, 2020, respectively. 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 under this arrangement took place for the periods ended March 31, 2021 and December 31, 2020. As a participant in the SBA Paycheck Protection Program ("PPP"), the Bank may pledge originated loans as collateral at face value to the Federal Reserve Bank of Boston for term financings. As of March 31, 2021, the Bank had no pledged PPP loans. The Bank's available borrowing capacity with the Federal Reserve Bank was $596.8 million and $815.6 million for the periods ended March 31, 2021 and December 31, 2020, respectively. 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, 2021 included callable advances totaling $10.0 million and amortizing advances totaling $4.8 million. The advances outstanding at December 31, 2020 included callable advances totaling $10.0 million and amortizing advances totaling $5.2 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, 2021 is as follows: March 31, 2021 Weighted Average (In thousands, except rates) Principal Rate Fixed rate advances maturing: 2021 $ 272,985 1.86 % 2022 58,270 1.92 2023 10,659 2.16 2024 50 — 2025 and beyond 9,390 1.63 Total FHLB advances $ 351,354 1.88 % The Company did not have variable-rate FHLB advances for the periods ended March 31, 2021 and December 31, 2020. 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 $184 thousand and $215 thousand for unamortized debt issuance costs as of March 31, 2021 and December 31, 2020, 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 2.03% and 2.06% at March 31, 2021 and December 31, 2020, 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 1.88% and 1.92% at March 31, 2021 and December 31, 2020, 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 FINANCIAL INSTRUMENT

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES	3 Months Ended
	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES As of March 31, 2021, the Company held derivatives with a total notional amount of $3.8 billion. The Company had economic hedges totaling $3.8 billion and $10.3 million non-hedging derivatives, 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 $8.7 million in forward commitment contracts. 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, 2021. The Company pledged collateral to derivative counterparties in the form of cash totaling $70.3 million and securities with an amortized cost of $36.9 million and a fair value of $37.1 million as of March 31, 2021. 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, 2021, 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 $ 8,463 8.7 0.48 % 5.09 % $ (1,432) Interest rate swaps on loans with commercial loan customers 1,720,659 6.0 4.15 % 1.92 % 101,216 Offsetting interest rate swaps on loans with commercial loan customers (1) 1,720,659 6.0 1.92 % 4.15 % (40,670) Risk participation agreements with dealer banks 341,662 8.8 336 Forward sale commitments 8,661 0.2 326 Total economic hedges 3,800,104 59,776 Non-hedging derivatives: Commitments to lend 10,316 0.2 185 Total non-hedging derivatives 10,316 185 Total $ 3,810,420 $ 59,961 (1) Fair value estimates include the impact of $61.3 million settled to market contract agreements. Information about derivative assets and liabilities at December 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 $ 8,654 8.9 0.52 % 5.09 % $ (1,778) Interest rate swaps on loans with commercial loan customers 1,734,978 6.1 4.15 % 1.95 % 159,016 Offsetting interest rate swaps on loans with commercial loan customers (1) 1,734,978 6.1 1.95 % 4.15 % (64,645) Risk participation agreements with dealer banks 326,862 8.0 665 Forward sale commitments 11,544 0.2 320 Total economic hedges 3,817,016 93,578 Non-hedging derivatives: Commitments to lend 40,099 0.2 735 Total non-hedging derivatives 40,099 735 Total $ 3,857,115 $ 94,313 (1) Fair value estimates include the impact of $97.6 million settled to market contract agreements. Economic hedges As of March 31, 2021, the Company has an interest rate swap with a $8.5 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, 2021. 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. 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 non-interest income in the Company’s consolidated statements of operations. 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. 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) 2021 2020 Economic hedges Interest rate swap on industrial revenue bond: Unrealized gain/(loss) recognized in other non-interest income $ 346 $ (563) Interest rate swaps on loans with commercial loan customers: Unrealized (loss)/gain recognized in other non-interest income (60,302) 102,382 Favorable/(unfavorable) change in credit valuation adjustment recognized in other non-interest income 2,502 (2,538) Offsetting interest rate swaps on loans with commercial loan customers: Unrealized gain/(loss) recognized in other non-interest income 60,302 (102,382) Risk participation agreements: Unrealized (loss)/gain recognized in other non-interest income (329) 266 Forward commitments: Unrealized gain/(loss) recognized in other non-interest income 6 (4,263) Realized gain/(loss) in other non-interest income (6) (1,922) Non-hedging derivatives Commitments to lend Unrealized (loss)/gain recognized in other non-interest income $ (550) $ 2,208 Realized gain in other non-interest income 1,352 9,300 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 $1.3 million and $1.0 million as of March 31, 2021 and December 31, 2020, respectively. The Company had net asset positions with its commercial banking counterparties totaling $103.8 million and $159.0 million as of March 31, 2021 and December 31, 2020, respectively. The Company had net liability positions with its financial institution counterparties totaling $43.0 million and $66.8 million as of March 31, 2021 and December 31, 2020, respectively. The Company had net liability positions with its commercial banking counterparties totaling $2.6 million as of March 31, 2021. The Company had no net liability positions with its commercial banking counterparties as of December 31, 2020. 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, 2021 and December 31, 2020: Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts Gross Amounts Not Offset in Recognized Statements of Statements of Financial Cash (In thousands) Assets Condition Condition Instruments Collateral Received Net Amount March 31, 2021 Interest Rate Swap Agreements: Institutional counterparties $ 3,086 $ (1,832) $ 1,254 $ — $ — $ 1,254 Commercial counterparties 103,799 — 103,799 — — 103,799 Total $ 106,885 $ (1,832) $ 105,053 $ — $ — $ 105,053 Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts Gross Amounts Not Offset in Recognized Statements of Statements of Financial Cash (In thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount March 31, 2021 Interest Rate Swap Agreements: Institutional counterparties $ (104,770) $ 61,750 $ (43,020) $ 37,116 $ 70,333 $ 64,429 Commercial counterparties (2,582) — (2,582) — — (2,582) Total $ (107,352) $ 61,750 $ (45,602) $ 37,116 $ 70,333 $ 61,847 Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts Gross Amounts Not Offset in Recognized Statements of Statements of Financial Cash (In thousands) Assets Condition Condition Instruments Collateral Received Net Amount December 31, 2020 Interest Rate Swap Agreements: Institutional counterparties $ 1,124 $ (78) $ 1,046 $ — $ — $ 1,046 Commercial counterparties 159,016 — 159,016 — — 159,016 Total $ 160,140 $ (78) $ 160,062 $ — $ — $ 160,062 Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts Gross Amounts Not Offset in Recognized Statements of Statements of Financial Cash (In thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount December 31, 2020 Interest Rate Swap Agreements: Institutional counterparties $ (164,543) $ 97,740 $ (66,803) $ 37,815 $ 75,070 $ 46,082 Commercial counterparties — — — — — — Total $ (164,543) $ 97,740 $ (66,803) $ 37,815 $ 75,070 $ 46,082

LEASES

LEASES	3 Months Ended
	Mar. 31, 2021
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, 2021, lease expiration dates ranged from 1 month to 19 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, 2021 December 31, 2020 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 56,704 $ 60,018 Finance lease right-of-use assets Premises and equipment, net 7,066 7,197 Total Lease Right-of-Use Assets $ 63,770 $ 67,215 Lease Liabilities Operating lease liabilities Other liabilities $ 61,481 $ 63,894 Finance lease liabilities Other liabilities 10,252 10,383 Total Lease Liabilities $ 71,733 $ 74,277 Supplemental information related to leases was as follows: March 31, 2021 December 31, 2020 Weighted-Average Remaining Lease Term (in years) Operating leases 9.8 9.8 Finance leases 13.6 13.8 Weighted-Average Discount Rate Operating leases 2.82 % 2.81 % 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, 2021 was $2.8 million. Variable lease components, such as consumer price index adjustments, are expensed as incurred and not included in ROU assets and operating lease liabilities. 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 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, 2021 March 31, 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases (1) $ 3,330 $ 3,628 Operating cash flows from finance leases 127 134 Financing cash flows from finance leases 131 124 (1) There were operating cash flows from operating leases related to discontinued operations of $0.5 million at March 31, 2020. The following table presents a maturity analysis of the Company’s lease liability by lease classification at March 31, 2021: (In thousands) Operating Leases Finance Leases 2021 $ 7,966 $ 766 2022 9,774 1,031 2023 8,549 1,037 2024 7,414 1,037 2025 5,727 1,037 Thereafter 31,593 9,223 Total undiscounted lease payments 71,023 14,131 Less amounts representing interest (9,542) (3,879) Lease liability $ 61,481 $ 10,252
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, 2021, lease expiration dates ranged from 1 month to 19 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, 2021 December 31, 2020 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 56,704 $ 60,018 Finance lease right-of-use assets Premises and equipment, net 7,066 7,197 Total Lease Right-of-Use Assets $ 63,770 $ 67,215 Lease Liabilities Operating lease liabilities Other liabilities $ 61,481 $ 63,894 Finance lease liabilities Other liabilities 10,252 10,383 Total Lease Liabilities $ 71,733 $ 74,277 Supplemental information related to leases was as follows: March 31, 2021 December 31, 2020 Weighted-Average Remaining Lease Term (in years) Operating leases 9.8 9.8 Finance leases 13.6 13.8 Weighted-Average Discount Rate Operating leases 2.82 % 2.81 % 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, 2021 was $2.8 million. Variable lease components, such as consumer price index adjustments, are expensed as incurred and not included in ROU assets and operating lease liabilities. 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 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, 2021 March 31, 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases (1) $ 3,330 $ 3,628 Operating cash flows from finance leases 127 134 Financing cash flows from finance leases 131 124 (1) There were operating cash flows from operating leases related to discontinued operations of $0.5 million at March 31, 2020. The following table presents a maturity analysis of the Company’s lease liability by lease classification at March 31, 2021: (In thousands) Operating Leases Finance Leases 2021 $ 7,966 $ 766 2022 9,774 1,031 2023 8,549 1,037 2024 7,414 1,037 2025 5,727 1,037 Thereafter 31,593 9,223 Total undiscounted lease payments 71,023 14,131 Less amounts representing interest (9,542) (3,879) Lease liability $ 61,481 $ 10,252

OTHER COMMITMENTS, CONTINGENCIE

OTHER COMMITMENTS, CONTINGENCIES, OFF-BALANCE SHEET ACTIVITIES, AND PANDEMIC IMPACT	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
OTHER COMMITMENTS, CONTINGENCIES, OFF-BALANCE SHEET ACTIVITIES, AND PANDEMIC IMPACT	OTHER COMMITMENTS, CONTINGENCIES, OFF-BALANCE SHEET ACTIVITIES, AND PANDEMIC IMPACT 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. At this time, it is difficult to quantify the impact COVID-19 will have on the Company during the current year. These circumstances could cause the Company to experience a material adverse effect on our business operations, asset valuations, financial condition, results of operations and prospects. Material adverse impacts may include all or a combination of valuation impairments on the Company’s intangible assets, investments, loans, loan servicing rights, deferred tax assets, lease right-of-use assets, or counter-party risk derivatives.

CAPITAL RATIOS AND SHAREHOLDERS

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY	3 Months Ended
	Mar. 31, 2021
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, December 31, Minimum Capital Requirement Company (consolidated) Total capital to risk weighted assets 16.6 % 16.1 % 8.0 % Common equity tier 1 capital to risk weighted assets 14.2 13.8 4.5 Tier 1 capital to risk weighted assets 14.4 14.1 6.0 Tier 1 capital to average assets 9.5 9.4 4.0 March 31, December 31, Regulatory Minimum to be Adequately Capitalized Regulatory Bank Total capital to risk weighted assets 15.4 % 15.0 % 8.0 % 10.0 % Common equity tier 1 capital to risk weighted assets 14.2 13.9 4.5 6.5 Tier 1 capital to risk weighted assets 14.2 13.9 6.0 8.0 Tier 1 capital to average assets 9.3 9.2 4.0 5.0 The Company and the Bank are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Failure to meet capital requirements can initiate regulatory action. At each date shown, the Company met the minimum capital requirements and 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, 2021, 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, 2021 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 $ 17,975 $ 44,988 Net unrealized holding (loss) on pension plans (3,511) (3,511) Income taxes related to items of accumulated other comprehensive income: Net unrealized tax (expense) on AFS securities (4,667) (11,530) Net unrealized tax benefit on pension plans 924 924 Accumulated other comprehensive income $ 10,721 $ 30,871 The following table presents the components of other comprehensive income for the three months ended March 31, 2021 and 2020: (In thousands) Before Tax Tax Effect Net of Tax Three Months Ended March 31 , 2021 Net unrealized holding gain on AFS securities: x Net unrealized (losses) arising during the period $ (27,013) $ 6,863 $ (20,150) Less: reclassification adjustment for gains realized in net income — — — Net unrealized holding (loss) on AFS securities (27,013) 6,863 (20,150) Other comprehensive (loss) $ (27,013) $ 6,863 $ (20,150) Three Months Ended March 31 , 2020 Net unrealized holding gain on AFS securities: 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 The following table presents the changes in each component of accumulated other comprehensive income, for the three ended March 31, 2021 and 2020: (In thousands) Net unrealized Net unrealized Total Three Months Ended March 31, 2021 Balance at Beginning of Period $ 33,458 $ (2,587) $ 30,871 Other comprehensive income before reclassifications (20,150) — (20,150) Less: amounts reclassified from accumulated other comprehensive income — — — Total other comprehensive (loss) (20,150) — (20,150) Balance at End of Period $ 13,308 $ (2,587) $ 10,721 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 (1) — (1) Total other comprehensive income 19,024 — 19,024 Balance at End of Period $ 33,228 $ (2,211) $ 31,017 The following table presents the amounts reclassified out of each component of accumulated other comprehensive income for the three ended March 31, 2021 and 2020: Affected Line Item in the Three Months Ended March 31, Statement where Net Income (In thousands) 2021 2020 is Presented Realized gains on AFS securities: $ — $ (1) Non-interest income — — Tax expense — (1) Net of tax Total reclassifications for the period $ — $ (1) Net of tax

EARNINGS _ (LOSS) PER SHARE

EARNINGS / (LOSS) PER SHARE	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
EARNINGS / (LOSS) PER SHARE	EARNINGS/(LOSS) PER SHARE Earnings/(loss) 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) 2021 2020 Income/(loss) from continuing operations $ 13,031 $ (12,072) (Loss)/income from discontinued operations — (7,798) Net income/(loss) $ 13,031 $ (19,870) Average number of common shares issued 51,903 51,903 Less: average number of treasury shares 948 1,744 Less: average number of unvested stock award shares 625 488 Plus: average participating preferred shares — 533 Average number of basic shares outstanding 50,330 50,204 Plus: dilutive effect of unvested stock award shares 235 — Plus: dilutive effect of stock options outstanding — — Average number of diluted shares outstanding 50,565 50,204 Basic earnings/(loss) per common share: Continuing operations $ 0.26 $ (0.24) Discontinued operations — (0.16) Total $ 0.26 $ (0.40) Diluted earnings/(loss) per common share: Continuing operations $ 0.26 $ (0.24) Discontinued operations — (0.16) Total $ 0.26 $ (0.40)

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS	3 Months Ended
	Mar. 31, 2021
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, 2021 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, 2020 517 $ 28.35 112 $ 22.95 Granted 210 16.58 — — Acquired — — — — Stock options exercised — — (5) 13.70 Stock awards vested (44) 30.63 — — Forfeited (52) 25.82 — — Expired — — (10) 17.46 March 31, 2021 631 $ 20.09 97 $ 24.85

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	3 Months Ended
	Mar. 31, 2021
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. 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, 2021 and December 31, 2020, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value. March 31, 2021 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading security $ — $ — $ 9,350 $ 9,350 Securities available for sale: Municipal bonds and obligations — 90,300 — 90,300 Agency collateralized mortgage obligations — 724,554 — 724,554 Agency residential mortgage-backed securities — 447,196 — 447,196 Agency commercial mortgage-backed securities — 268,515 — 268,515 Corporate bonds — 45,014 — 45,014 Other bonds and obligations — 51,751 — 51,751 Marketable equity securities 15,129 672 — 15,801 Loans held for investment at fair value — — 1,448 1,448 Loans held for sale — 8,877 — 8,877 Derivative assets — 106,665 511 107,176 Capitalized servicing rights — — 2,968 2,968 Derivative liabilities — 47,215 — 47,215 December 31, 2020 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading security $ — $ — $ 9,708 $ 9,708 Securities available for sale: Municipal bonds and obligations — 97,803 — 97,803 Agency collateralized mortgage obligations — 756,826 — 756,826 Agency residential mortgage-backed securities — 438,132 — 438,132 Agency commercial mortgage-backed securities — 288,650 — 288,650 Corporate bonds — 45,030 15,000 60,030 Other bonds and obligations — 53,791 — 53,791 Marketable equity securities 17,841 672 — 18,513 Loans held for investment at fair value — — 2,265 2,265 Loans held for sale — 12,992 4,756 17,748 Derivative assets — 159,016 1,055 160,071 Capitalized servicing rights — — 3,033 3,033 Derivative liabilities — 65,758 — 65,758 There were no transfers between levels during the three months ended March 31, 2021. 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 an $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, 2021. Aggregate Fair Value March 31, 2021 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 1,448 $ 44,969 $ (43,521) Aggregate Fair Value December 31, 2020 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 2,265 $ 53,945 $ (51,680) 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, 2021 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale $ 8,877 $ 8,518 $ 359 Aggregate Fair Value December 31, 2020 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale $ 12,992 $ 12,639 $ 353 The changes in fair value of loans held for sale for the three months ended March 31, 2021, were gains of $6 thousand. During the three months ended March 31, 2021, originations of loans held for sale totaled $44.0 million and sales of loans originated for sale totaled $46.9 million. 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. 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. 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, 2021, 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. 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. 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. 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, 2021 and 2020. Assets (Liabilities) Securities Loans Capitalized Trading Available Held for Commitments Forward Servicing (In thousands) Security for Sale Investment to Lend Commitments Rights Three Months Ended March 31, 2021 December 31, 2020 $ 9,708 $ 15,000 $ 2,265 $ 735 $ 320 $ 3,033 Maturities, calls, and prepayments of — (15,000) — — — Unrealized (loss)/gain, net recognized in other non-interest income (166) — 414 818 6 (65) Paydown of asset (192) — (1,231) — — — Transfers to held for sale loans — — — (1,368) — — March 31, 2021 $ 9,350 $ — $ 1,448 $ 185 $ 326 $ 2,968 Unrealized gain/(loss) relating to instruments still held at March 31, 2021 $ 887 $ — $ — $ 185 $ 326 $ — 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 — — 7660 — — Maturity of AFS security — (9,000) — — — Unrealized gain, net recognized in other non-interest income (759) — (2,216) — — Unrealized gain included in accumulated other comprehensive loss — 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 $ — (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 (In thousands) March 31, 2021 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading security $ 9,350 Discounted Cash Flow Discount Rate 2.66 % Loan held for investment 1,448 Discounted Cash Flow Discount Rate 25.00 % Collateral Value $6.7 - $19.7 Commitments to lend 185 Historical Trend Closing Ratio 74.29 % Pricing Model Origination Costs, per loan $ 3 Forward commitments 326 Historical Trend Closing Ratio 74.29 % Pricing Model Origination Costs, per loan $ 3 Capitalized servicing rights 2,968 Discounted cash flow Constant Prepayment Rate (CPR) 21.07 % Discount Rate 10.00 % Total $ 14,277 Fair Value Significant (In thousands) December 31, 2020 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading security $ 9,708 Discounted Cash Flow Discount Rate 2.72 % AFS Securities 15,000 Indication from Market Maker Price 102.00 % Loans held for investment 2,265 Discounted Cash Flow Discount Rate 30.00 % Collateral Value $8.1- $21.9 Commitments to lend 735 Historical Trend Closing Ratio 74.54 % Pricing Model Origination Costs, per loan $ 3 Forward commitments 320 Historical Trend Closing Ratio 74.54 % Pricing Model Origination Costs, per loan $ 3 Capitalized servicing rights 3,033 Discounted Cash Flow Constant Prepayment Rate (CPR) 26.52 % Discount Rate 10.00 % Total $ 31,061 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, 2021 December 31, 2020 Fair Value Measurement Date as of March 31, 2021 Level 3 Level 3 Level 3 (In thousands) Inputs Inputs Inputs Assets Individually evaluated $ 21,762 $ 28,028 March 2021 Capitalized servicing rights 13,763 13,315 March 2021 Other real estate owned 149 149 March 2021 Total $ 35,674 $ 41,492 Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets is as follows: Fair Value (In thousands) March 31, 2021 Valuation Techniques Unobservable Inputs Range (Weighted Average) (1) Assets Individually evaluated $ 21,762 Fair Value of Collateral Discounted Cash Flow - Loss Severity 0.32% to 100.00% (49.39%) Appraised Value $0 to $11,842 ($7,827) Capitalized servicing rights 13,763 Discounted Cash Flow Constant Prepayment Rate (CPR) 11.32% to 19.49% (15.38%) Discount Rate 8.33% to 11.00% (9.12%) Other Real Estate Owned 149 Fair Value of Collateral Appraised Value $182 Total $ 35,674 (1) 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, 2020 Valuation Techniques Unobservable Inputs Range (Weighted Average) (1) Assets Individually evaluated $ 28,028 Fair Value of Collateral Discounted Cash Flow - loss severity 0.07% to 100.00% (46.36%) Appraised Value $0 to $11,432 ($9,800) Capitalized servicing rights 13,315 Discounted Cash Flow Constant Prepayment Rate (CPR) 14.49% to 23.29% (16.98%) Discount Rate 10.00% to 11.00% (10.56%) Other Real Estate Owned 149 Fair Value of Collateral Appraised Value $94 - $182 Total $ 41,492 (1) 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, 2021 and December 31, 2020. 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. March 31, 2021 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 1,899,608 $ 1,899,608 $ 1,899,608 $ — $ — Trading security 9,350 9,350 — — 9,350 Marketable equity securities 15,801 15,801 15,129 672 — Securities available for sale 1,627,330 1,627,330 — 1,627,330 — Securities held to maturity 610,637 627,297 — 624,012 3,285 FHLB bank stock and restricted securities 28,680 N/A N/A N/A N/A Net loans 7,534,978 7,778,261 — — 7,778,261 Loans held for sale 18,377 18,377 — 8,877 9,500 Accrued interest receivable 45,990 45,990 — 45,990 — Derivative assets 107,176 107,176 — 106,665 511 Financial Liabilities Total deposits $ 10,244,370 $ 10,256,878 $ — $ 10,256,878 $ — Short-term debt — — — — — Long-term Federal Home Loan Bank advances and other 351,354 353,481 — 353,481 — Subordinated borrowings 97,338 95,729 — 95,729 — Derivative liabilities 47,215 47,215 — 47,215 — December 31, 2020 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 1,557,875 $ 1,557,875 $ 1,557,875 $ — $ — Trading security 9,708 9,708 — — 9,708 Marketable equity securities 18,513 18,513 17,841 672 — Securities available for sale and other 1,695,232 1,695,232 — 1,680,232 15,000 Securities held to maturity 465,091 491,855 — 488,393 3,462 FHLB bank stock and restricted securities 34,873 N/A N/A N/A N/A Net loans 7,954,217 8,243,437 — — 8,243,437 Loans held for sale 17,748 17,748 — 12,992 4,756 Accrued interest receivable 46,919 46,919 — 46,919 — Derivative assets 160,071 160,071 — 159,016 1,055 Assets held for sale 317,304 317,304 — 16,705 300,599 Financial Liabilities Total deposits $ 10,215,808 $ 10,230,822 $ — $ 10,230,822 $ — Short-term debt 40,000 40,025 — 40,025 — Long-term Federal Home Loan Bank advances 434,357 438,064 — 438,064 — Subordinated borrowings 97,280 95,178 — 95,178 — Derivative liabilities 65,758 65,758 — 65,758 — Liabilities held for sale 630,065 631,268 — 631,268 —

NET INTEREST INCOME AFTER PROVI

NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	3 Months Ended
	Mar. 31, 2021
Banking and Thrift, Interest [Abstract]
NET INTEREST INCOME AFTER PROVISION FOR CREDIT 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, 2021 and 2020, respectively. Three Months Ended March 31, (In thousands) 2021 2020 Net interest income from continuing operations $ 75,093 $ 86,428 Provision for credit losses 6,500 34,807 Net interest income from continuing operations after provision for credit losses $ 68,593 $ 51,621

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	3 Months Ended
	Mar. 31, 2021
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.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent liabilities at the date of the financial statements. Actual results could differ from those estimates.
Recently Adopted Accounting Principles and Future Application of Accounting Pronouncements	Recently Adopted Accounting Principles 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. As ASU No. 2018-14 only revises disclosure requirements, the adoption did not have a material impact on the Company’s 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 adoption of ASU No. 2019-12 did not have a material impact on the Company's 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 are to be applied prospectively. The adoption of ASU No. 2020-01 did not have a material impact on the Company's Consolidated Financial Statements. In January 2021, the FASB issued ASU No. 2021-01, “Reference Rate Reform (Topic 848): Scope.” ASU No. 2021-01 clarifies that certain optional expedients and exceptions in ASC 848 for contract modifications and hedge accounting apply to derivatives that are affected by the discounting transition. ASU No. 2021-01 also amends the expedients and exceptions in ASC 848 to capture the incremental consequences of the scope clarification and to tailor the existing guidance to derivative instruments affected by the discounting transition. ASU No. 2021-01 was effective upon issuance and generally can be applied through December 31, 2022. The adoption of ASU 2021-01 did not significantly impact the Company’s Consolidated Financial Statements. Future Application of Accounting Pronouncements 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 AND H_2

DISCONTINUED OPERATIONS AND HELD FOR SALE (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 and March 31, 2020: Three Months Ended March 31, (In thousands) 2021 2020 Interest income $ — $ 729 Interest expense — 282 Net interest income — 447 Non-interest income — 1,358 Total net revenue — 1,805 Non-interest expense — 12,434 (Loss) from discontinued operations before income taxes — (10,629) Income tax (benefit) — (2,831) Net (loss) from discontinued operations $ — $ (7,798) The following is a summary of the assets and liabilities related to the branch sale at March 31, 2021 and December 31, 2020: (In thousands) March 31, 2021 December 31, 2020 Assets Loans $ 283,769 $ 300,599 Other assets 19,928 16,705 Total assets $ 303,697 $ 317,304 Liabilities Deposits $ 646,622 $ 617,377 Other liabilities 12,688 12,688 Total liabilities $ 659,310 $ 630,065

SECURITIES AVAILABLE FOR SALE_2

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES (Tables)	3 Months Ended
	Mar. 31, 2021
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 Gross Fair Value Allowance March 31, 2021 Securities available for sale Municipal bonds and obligations $ 83,922 $ 6,378 $ — $ 90,300 $ — Agency collateralized mortgage obligations 713,215 14,922 (3,583) 724,554 — Agency mortgage-backed securities 453,042 2,813 (8,659) 447,196 — Agency commercial mortgage-backed securities 267,596 4,020 (3,101) 268,515 — Corporate bonds 44,294 729 (9) 45,014 — Other bonds and obligations 50,691 1,068 (8) 51,751 — Total securities available for sale 1,612,760 29,930 (15,360) 1,627,330 — Securities held to maturity Municipal bonds and obligations 266,609 16,884 (592) 282,901 71 Agency collateralized mortgage obligations 151,092 4,764 (1,054) 154,802 — Agency mortgage-backed securities 65,052 155 (1,682) 63,525 — Agency commercial mortgage-backed securities 124,379 398 (2,288) 122,489 — Tax advantaged economic development bonds 3,210 75 — 3,285 40 Other bonds and obligations 295 — — 295 — Total securities held to maturity 610,637 22,276 (5,616) 627,297 111 Marketable equity securities 15,707 218 (124) 15,801 — Total $ 2,239,104 $ 52,424 $ (21,100) $ 2,270,428 $ 111 (In thousands) Amortized Cost Gross Gross Fair Value Allowance December 31, 2020 Securities available for sale Municipal bonds and obligations $ 90,273 $ 7,530 $ — $ 97,803 $ — Agency collateralized mortgage obligations 740,225 16,836 (235) 756,826 — Agency mortgage-backed securities 433,311 4,954 (133) 438,132 — Agency commercial mortgage-backed securities 278,990 9,835 (175) 288,650 — Corporate bonds 59,098 942 (10) 60,030 — Other bonds and obligations 52,080 1,719 (8) 53,791 — Total securities available for sale 1,653,977 41,816 (561) 1,695,232 — Securities held to maturity Municipal bonds and obligations 246,520 20,106 — 266,626 64 Agency collateralized mortgage obligations 153,561 5,989 (171) 159,379 — Agency mortgage-backed securities 35,865 198 (29) 36,034 — Agency commercial mortgage-backed securities 25,481 590 (12) 26,059 — Tax advantaged economic development bonds 3,369 93 — 3,462 40 Other bonds and obligations 295 — — 295 — Total securities held to maturity 465,091 26,976 (212) 491,855 104 Marketable equity securities 18,061 767 (315) 18,513 — Total $ 2,137,129 $ 69,559 $ (1,088) $ 2,205,600 $ 104
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, 2021 and 2020: (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2020 $ 64 $ 40 $ 104 Provision for credit losses 7 — 7 Balance at March 31, 2021 $ 71 $ 40 $ 111 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2019 $ — $ — $ — Impact of ASC 326 adoption 83 226 309 Provision for credit losses - reversal — (168) (168) Balance at March 31, 2020 $ 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, 2021 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 $ 31,134 $ 31,147 $ 1,872 $ 1,874 Over 1 year to 5 years 7,206 7,331 4,270 4,317 Over 5 years to 10 years 51,953 53,260 23,311 24,210 Over 10 years 88,614 95,327 240,661 256,080 Total bonds and obligations 178,907 187,065 270,114 286,481 Mortgage-backed securities 1,433,853 1,440,265 340,523 340,816 Total $ 1,612,760 $ 1,627,330 $ 610,637 $ 627,297
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, 2021 Securities available for sale Agency collateralized mortgage obligations $ 3,583 $ 150,110 $ — $ — $ 3,583 $ 150,110 Agency mortgage-backed securities 8,654 346,395 5 384 8,659 346,779 Agency commercial mortgage-backed securities 3,101 132,234 — — 3,101 132,234 Corporate bonds — — 9 4,876 9 4,876 Other bonds and obligations — — 8 981 8 981 Total securities available for sale $ 15,338 $ 628,739 $ 22 $ 6,241 $ 15,360 $ 634,980 Securities held to maturity Municipal bonds and obligations $ 592 $ 23,359 $ — $ — $ 592 $ 23,359 Agency collateralized mortgage obligations 1,054 83,449 — — 1,054 83,449 Agency mortgage-backed securities 1,682 59,167 — — 1,682 59,167 Agency commercial mortgage-backed securities 2,288 103,015 — — 2,288 103,015 Total securities held to maturity 5,616 268,990 — — 5,616 268,990 Total $ 20,954 $ 897,729 $ 22 $ 6,241 $ 20,976 $ 903,970 December 31, 2020 Securities available for sale Agency collateralized mortgage obligations $ 235 $ 77,898 $ — $ — $ 235 $ 77,898 Agency mortgage-backed securities 131 39,939 2 256 133 40,195 Agency commercial mortgage-backed securities 175 51,435 — — 175 51,435 Corporate bonds 10 4,875 — — 10 4,875 Other bonds and obligations — — 8 1,030 8 1,030 Total securities available for sale $ 551 $ 174,147 $ 10 $ 1,286 $ 561 $ 175,433 Securities held to maturity Agency collateralized mortgage obligations $ 171 $ 25,048 $ — $ — $ 171 $ 25,048 Agency mortgage-backed securities 29 20,710 — — 29 20,710 Agency commercial mortgage-backed securities 12 10,216 — — 12 10,216 Total securities held to maturity 212 55,974 — — 212 55,974 Total $ 763 $ 230,121 $ 10 $ 1,286 $ 773 $ 231,407

LOANS AND ALLOWANCE FOR CREDI_2

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables)	3 Months Ended
	Mar. 31, 2021
Credit Loss [Abstract]
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, 2021 December 31, 2020 Construction $ 454,388 $ 454,513 Commercial multifamily 483,646 483,350 Commercial real estate owner occupied 556,286 552,413 Commercial real estate non-owner occupied 2,129,572 2,119,263 Commercial and industrial 1,719,304 1,943,164 Residential real estate 1,774,504 1,931,681 Home equity 279,017 293,981 Consumer other 262,061 303,154 Total loans $ 7,658,778 $ 8,081,519 Allowance for credit losses 123,800 127,302 Net loans $ 7,534,978 $ 7,954,217
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, 2021 and 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, 2021 Construction $ 5,111 $ — $ 5,111 $ — $ — $ (714) $ 4,397 Commercial multifamily 5,916 — 5,916 (124) 62 497 6,351 Commercial real estate owner occupied 12,380 — 12,380 (376) 12 2,241 14,257 Commercial real estate non-owner occupied 35,850 — 35,850 (6,658) 126 5,243 34,561 Commercial and industrial 25,013 — 25,013 (3,320) 644 3,734 26,071 Residential real estate 28,491 — 28,491 (377) 437 (2,751) 25,800 Home equity 6,482 — 6,482 (77) 24 (680) 5,749 Consumer other 8,059 — 8,059 (528) 160 (1,077) 6,614 Total allowance for credit losses $ 127,302 $ — $ 127,302 $ (11,460) $ 1,465 $ 6,493 $ 123,800 (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 Commercial 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 20,099 (2,189) 17,910 (4,916) 1,402 10,106 24,502 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, 2021 and March 31, 2020 was as follows: Three Months Ended (In thousands) 2021 2020 Balance at beginning of period $ 7,629 $ 100 Impact of adopting ASC 326 — 7,993 Sub-Total 7,629 8,093 Expense for credit losses 200 330 Balance at end of period $ 7,829 $ 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) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of March 31, 2021 Construction Risk rating Pass $ 25,422 $ 43,662 $ 275,525 $ 65,371 $ 27,177 $ 2,501 $ 1,000 $ — $ 440,658 Special Mention — — — 313 — — — — 313 Substandard — — — 9,429 3,988 — — — 13,417 Total $ 25,422 $ 43,662 $ 275,525 $ 75,113 $ 31,165 $ 2,501 $ 1,000 $ — $ 454,388 Commercial multifamily: Risk rating Pass $ 17,100 $ 31,295 $ 55,210 $ 74,123 $ 78,148 $ 219,175 $ 61 $ — $ 475,112 Special Mention — — 2,187 — — — — — 2,187 Substandard — — — — — 6,204 143 — 6,347 Total $ 17,100 $ 31,295 $ 57,397 $ 74,123 $ 78,148 $ 225,379 $ 204 $ — $ 483,646 Commercial real estate owner occupied: Risk rating Pass $ 13,652 $ 53,164 $ 81,473 $ 99,224 $ 63,148 $ 218,342 $ 1,506 $ — $ 530,509 Special Mention — 535 3,389 1,136 1,966 2,432 — — 9,458 Substandard — — 1,266 3,333 1,627 10,093 — — 16,319 Total $ 13,652 $ 53,699 $ 86,128 $ 103,693 $ 66,741 $ 230,867 $ 1,506 $ — $ 556,286 Commercial real estate non-owner occupied: Risk rating Pass $ 77,638 $ 174,898 $ 292,528 $ 469,718 $ 218,525 $ 725,223 $ 17,394 $ — $ 1,975,924 Special Mention — 231 270 2,971 6,904 58,403 1,059 — 69,838 Substandard — 7,804 3,529 3,730 20,135 48,418 194 — 83,810 Total $ 77,638 $ 182,933 $ 296,327 $ 476,419 $ 245,564 $ 832,044 $ 18,647 $ — $ 2,129,572 Commercial and industrial: Risk rating Pass $ 25,240 $ 563,757 $ 131,781 $ 203,153 $ 110,240 $ 182,949 $ 372,075 $ — $ 1,589,195 Special Mention — 1,952 9,887 7,477 3,881 4,011 10,806 — 38,014 Substandard 146 8,807 37,772 22,909 6,826 7,857 7,456 — 91,773 Doubtful — — — — — — 322 — 322 Total $ 25,386 $ 574,516 $ 179,440 $ 233,539 $ 120,947 $ 194,817 $ 390,659 $ — $ 1,719,304 Residential real estate Risk rating Pass $ 55,071 $ 148,622 $ 127,817 $ 218,785 $ 273,160 $ 931,322 $ 3,261 $ — $ 1,758,038 Special Mention — — — — 284 814 — — 1,098 Substandard — 700 31 1,836 2,434 10,367 — — 15,368 Total $ 55,071 $ 149,322 $ 127,848 $ 220,621 $ 275,878 $ 942,503 $ 3,261 $ — $ 1,774,504 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 December 31, 2020 Construction Risk rating Pass $ 38,374 $ 255,377 $ 114,690 $ 28,474 $ 9,519 $ 2,766 $ 1,000 $ — $ 450,200 Special Mention — — 313 — — — — — 313 Substandard — — — 4,000 — — — — 4,000 Total $ 38,374 $ 255,377 $ 115,003 $ 32,474 $ 9,519 $ 2,766 $ 1,000 $ — $ 454,513 Commercial multifamily: Risk rating Pass $ 31,438 $ 57,659 $ 74,932 $ 77,746 $ 81,066 $ 153,818 $ 20 $ — $ 476,679 Special Mention — — — — — — — — — Substandard — — — — 47 6,479 145 — 6,671 Total $ 31,438 $ 57,659 $ 74,932 $ 77,746 $ 81,113 $ 160,297 $ 165 $ — $ 483,350 Commercial real estate owner occupied: Risk rating Pass $ 58,327 $ 84,839 $ 104,797 $ 64,693 $ 44,300 $ 169,197 $ 1,194 $ — $ 527,347 Special Mention 535 2,569 1,136 1,009 800 2,579 — — 8,628 Substandard — 1,266 3,597 1,685 1,439 8,451 — — 16,438 Total $ 58,862 $ 88,674 $ 109,530 $ 67,387 $ 46,539 $ 180,227 $ 1,194 $ — $ 552,413 Commercial real estate non-owner occupied: Risk rating Pass $ 180,520 $ 292,386 $ 435,440 $ 223,935 $ 303,221 $ 497,066 $ 15,393 $ — $ 1,947,961 Special Mention — 279 2,068 6,958 11,798 44,961 1,068 — 67,132 Substandard 7,804 3,529 4,235 19,632 2,124 66,651 195 — 104,170 Total $ 188,324 $ 296,194 $ 441,743 $ 250,525 $ 317,143 $ 608,678 $ 16,656 $ — $ 2,119,263 Commercial and industrial: Risk rating Pass $ 754,260 $ 159,046 $ 205,651 $ 130,985 $ 48,326 $ 148,222 $ 368,769 $ — $ 1,815,259 Special Mention 1,467 5,753 5,267 2,851 1,601 65 12,408 — 29,412 Substandard 7,392 39,822 24,951 7,765 3,504 5,630 9,099 — 98,163 Doubtful — — — — — — 330 — 330 Total $ 763,119 $ 204,621 $ 235,869 $ 141,601 $ 53,431 $ 153,917 $ 390,606 $ — $ 1,943,164 Residential real estate Risk rating Pass $ 150,583 $ 146,142 $ 272,399 $ 320,384 $ 333,159 $ 691,078 $ 3,281 $ — $ 1,917,026 Special Mention 384 — 454 1,430 — 362 — — 2,630 Substandard 991 39 703 902 417 8,964 9 — 12,025 Total $ 151,958 $ 146,181 $ 273,556 $ 322,716 $ 333,576 $ 700,404 $ 3,290 $ — $ 1,931,681 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) 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of March 31, 2021 Home equity: Payment performance Performing $ 703 $ 2,623 $ 1,469 $ 309 $ 1,829 $ 2,234 $ 267,103 $ — $ 276,270 Nonperforming — — — — — — 2,747 — 2,747 Total $ 703 $ 2,623 $ 1,469 $ 309 $ 1,829 $ 2,234 $ 269,850 $ — $ 279,017 Consumer other: Payment performance Performing $ 4,870 $ 14,084 $ 30,924 $ 87,205 $ 57,753 $ 54,399 $ 7,965 $ — $ 257,200 Nonperforming — 69 381 1,325 1,457 1,619 10 — 4,861 Total $ 4,870 $ 14,153 $ 31,305 $ 88,530 $ 59,210 $ 56,018 $ 7,975 $ — $ 262,061 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 December 31, 2020 Home equity: Payment performance Performing $ 2,445 $ 1,960 $ 316 $ 1,859 $ 499 $ 1,882 $ 282,123 $ — $ 291,084 Nonperforming — — 1 — — — 2,896 — 2,897 Total $ 2,445 $ 1,960 $ 317 $ 1,859 $ 499 $ 1,882 $ 285,019 $ — $ 293,981 Consumer other: Payment performance Performing $ 15,193 $ 35,317 $ 101,730 $ 69,366 $ 35,421 $ 31,327 $ 9,339 $ — $ 297,693 Nonperforming 39 316 1,511 1,599 1,585 407 4 — 5,461 Total $ 15,232 $ 35,633 $ 103,241 $ 70,965 $ 37,006 $ 31,734 $ 9,343 $ — $ 303,154 The following table summarizes information about total loans rated Special Mention or lower at March 31, 2021 and December 31, 2020. The table below includes consumer loans that are Special Mention and Substandard accruing that are classified as performing based on payment activity. (In thousands) March 31, 2021 December 31, 2020 Non-Accrual $ 55,817 $ 64,948 Substandard Accruing 179,150 185,207 Total Classified 234,967 250,155 Special Mention 121,437 109,299 Total Criticized $ 356,404 $ 359,454
Summary of Past Due Loans	The following is a summary of loans by past due status at March 31, 2021 and December 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, 2021 Construction $ 3,988 $ — $ — $ 3,988 $ 450,400 $ 454,388 Commercial multifamily — — 4,068 4,068 479,578 483,646 Commercial real estate owner occupied 6,174 487 4,610 11,271 545,015 556,286 Commercial real estate non-owner occupied 703 — 21,790 22,493 2,107,079 2,129,572 Commercial and industrial 9,479 1,540 9,486 20,505 1,698,799 1,719,304 Residential real estate 2,990 1,098 14,476 18,564 1,755,940 1,774,504 Home equity 647 159 2,747 3,553 275,464 279,017 Consumer other 1,052 248 4,764 6,064 255,997 262,061 Total $ 25,033 $ 3,532 $ 61,941 $ 90,506 $ 7,568,272 $ 7,658,778 (In thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans December 31, 2020 Construction $ — $ — $ — $ — $ 454,513 $ 454,513 Commercial multifamily — — 757 757 482,593 483,350 Commercial real estate owner occupied 809 631 4,894 6,334 546,079 552,413 Commercial real estate non-owner occupied 315 168 38,389 38,872 2,080,391 2,119,263 Commercial and industrial 3,016 3,259 12,982 19,257 1,923,907 1,943,164 Residential real estate 2,068 2,630 11,115 15,813 1,915,868 1,931,681 Home equity 244 284 2,897 3,425 290,556 293,981 Consumer other 2,109 777 5,364 8,250 294,904 303,154 Total $ 8,561 $ 7,749 $ 76,398 $ 92,708 $ 7,988,811 $ 8,081,519
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, 2021 and December 31, 2020: (In thousands) 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, 2021 Construction $ — $ — $ — $ — Commercial multifamily 4,068 4,068 — — Commercial real estate owner occupied 4,232 1,832 378 — Commercial real estate non-owner occupied 18,856 11,691 2,934 — Commercial and industrial 9,364 3,005 122 — Residential real estate 11,941 7,419 2,535 — Home equity 2,599 211 148 — Consumer other 4,757 8 7 — Total $ 55,817 $ 28,234 $ 6,124 $ — The commercial and industrial loans nonaccrual amortized cost as of March 31, 2021 included medallion loans with a fair value of $1.4 million and a contractual balance of $45.0 million. (In thousands) 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 December 31, 2020 Construction $ — $ — $ — $ — Commercial multifamily 757 591 — — Commercial real estate owner occupied 4,509 2,290 385 — Commercial real estate non-owner occupied 29,572 13,912 8,817 — Commercial and industrial 12,441 4,725 541 — Residential real estate 9,711 5,739 1,404 — Home equity 2,654 159 243 — Consumer other 5,304 2 60 — Total $ 64,948 $ 27,418 $ 11,450 $ —
Schedule of Collateral Dependent Loans	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, 2021 Construction $ — $ — $ — Commercial multifamily 4,070 — — Commercial real estate owner occupied 5,351 — — Commercial real estate non-owner occupied 20,805 — — Commercial and industrial 1,361 18 977 Residential real estate 7,048 — — Home equity 198 — — Consumer other 34 — — Total loans $ 38,867 $ 18 $ 977 December 31, 2020 Construction $ — $ — $ — Commercial multifamily 591 — — Commercial real estate owner occupied 5,714 — — Commercial real estate non-owner occupied 30,950 — — Commercial and industrial 973 36 3,758 Residential real estate 5,081 — — Home equity 145 — — Consumer other 51 — — Total loans $ 43,505 $ 36 $ 3,758
Schedule of Troubled Debt Restructurings, Activity	The following table presents activity in TDRs for the three months ended March 31, 2021 and March 31, 2020: (In thousands) Balance at Beginning of Period Principal Payments TDR Status Change Other Additions/(Reductions) Newly Identified TDRs Balance at End of Period Three months ended March 31, 2021 Construction $ — $ — $ — $ — $ — $ — Commercial multifamily 754 (13) — — — 741 Commercial real estate owner occupied 1,731 (6) — — — 1,725 Commercial real estate non-owner occupied 13,684 (14) — 511 544 14,725 Commercial and industrial 2,686 (199) — — 146 2,633 Residential real estate 1,524 (31) — — — 1,493 Home equity 133 (3) — — — 130 Consumer other 36 (2) — — — 34 Total $ 20,548 $ (268) $ — $ 511 $ 690 $ 21,481 (In thousands) Balance at Beginning of Period Principal Payments TDR Status Change Other Additions/(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 1,449 (37) — — 902 2,314 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
Schedule of Loans Modified as TDRs	The following table presents loans modified as TDRs that occurred during the three months ended March 31, 2021 and March 31, 2020: (dollars in thousands) Total Three months ended March 31, 2021 TDR: Number of loans 4 Pre-modification outstanding recorded investment $ 690 Post-modification outstanding recorded investment $ 690 Three months ended March 31, 2020 TDR: Number of loans 3 Pre-modification outstanding recorded investment $ 902 Post-modification outstanding recorded investment $ 902

DEPOSITS (Tables)

DEPOSITS (Tables)	3 Months Ended
	Mar. 31, 2021
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 $ 630,244 $ 663,324 Time $100,000 through $250,000 999,329 1,219,210 Time more than $250,000 473,649 502,551 Total time deposits $ 2,103,222 $ 2,385,085

BORROWED FUNDS (Tables)

BORROWED FUNDS (Tables)	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Schedule of Borrowed Funds	Borrowed funds at March 31, 2021 and December 31, 2020 are summarized, as follows: March 31, 2021 December 31, 2020 Weighted Weighted Average Average (Dollars in thousands) Principal Rate Principal Rate Short-term borrowings: Advances from the FHLB $ — — % $ 40,000 1.05 % Total short-term borrowings: — — 40,000 1.05 Long-term borrowings: Advances from the FHLB and other borrowings 351,354 1.88 434,357 1.89 Subordinated borrowings 74,455 7.00 74,411 7.00 Junior subordinated borrowing - Trust I 15,464 2.03 15,464 2.06 Junior subordinated borrowing - Trust II 7,419 1.88 7,405 1.92 Total long-term borrowings: 448,692 2.73 531,637 2.61 Total $ 448,692 2.73 % $ 571,637 2.50 %
Summary of Maturities of FHLBB Advances	A summary of maturities of FHLB advances as of March 31, 2021 is as follows: March 31, 2021 Weighted Average (In thousands, except rates) Principal Rate Fixed rate advances maturing: 2021 $ 272,985 1.86 % 2022 58,270 1.92 2023 10,659 2.16 2024 50 — 2025 and beyond 9,390 1.63 Total FHLB advances $ 351,354 1.88 %

DERIVATIVE FINANCIAL INSTRUME_2

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021, 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 $ 8,463 8.7 0.48 % 5.09 % $ (1,432) Interest rate swaps on loans with commercial loan customers 1,720,659 6.0 4.15 % 1.92 % 101,216 Offsetting interest rate swaps on loans with commercial loan customers (1) 1,720,659 6.0 1.92 % 4.15 % (40,670) Risk participation agreements with dealer banks 341,662 8.8 336 Forward sale commitments 8,661 0.2 326 Total economic hedges 3,800,104 59,776 Non-hedging derivatives: Commitments to lend 10,316 0.2 185 Total non-hedging derivatives 10,316 185 Total $ 3,810,420 $ 59,961 (1) Fair value estimates include the impact of $61.3 million settled to market contract agreements. Information about derivative assets and liabilities at December 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 $ 8,654 8.9 0.52 % 5.09 % $ (1,778) Interest rate swaps on loans with commercial loan customers 1,734,978 6.1 4.15 % 1.95 % 159,016 Offsetting interest rate swaps on loans with commercial loan customers (1) 1,734,978 6.1 1.95 % 4.15 % (64,645) Risk participation agreements with dealer banks 326,862 8.0 665 Forward sale commitments 11,544 0.2 320 Total economic hedges 3,817,016 93,578 Non-hedging derivatives: Commitments to lend 40,099 0.2 735 Total non-hedging derivatives 40,099 735 Total $ 3,857,115 $ 94,313 (1) Fair value estimates include the impact of $97.6 million settled to market contract agreements.
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) 2021 2020 Economic hedges Interest rate swap on industrial revenue bond: Unrealized gain/(loss) recognized in other non-interest income $ 346 $ (563) Interest rate swaps on loans with commercial loan customers: Unrealized (loss)/gain recognized in other non-interest income (60,302) 102,382 Favorable/(unfavorable) change in credit valuation adjustment recognized in other non-interest income 2,502 (2,538) Offsetting interest rate swaps on loans with commercial loan customers: Unrealized gain/(loss) recognized in other non-interest income 60,302 (102,382) Risk participation agreements: Unrealized (loss)/gain recognized in other non-interest income (329) 266 Forward commitments: Unrealized gain/(loss) recognized in other non-interest income 6 (4,263) Realized gain/(loss) in other non-interest income (6) (1,922) Non-hedging derivatives Commitments to lend Unrealized (loss)/gain recognized in other non-interest income $ (550) $ 2,208 Realized gain in other non-interest income 1,352 9,300
Schedule of Assets Subject to an Enforceable Master Netting Arrangement	Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts Gross Amounts Not Offset in Recognized Statements of Statements of Financial Cash (In thousands) Assets Condition Condition Instruments Collateral Received Net Amount March 31, 2021 Interest Rate Swap Agreements: Institutional counterparties $ 3,086 $ (1,832) $ 1,254 $ — $ — $ 1,254 Commercial counterparties 103,799 — 103,799 — — 103,799 Total $ 106,885 $ (1,832) $ 105,053 $ — $ — $ 105,053 Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts Gross Amounts Not Offset in Recognized Statements of Statements of Financial Cash (In thousands) Assets Condition Condition Instruments Collateral Received Net Amount December 31, 2020 Interest Rate Swap Agreements: Institutional counterparties $ 1,124 $ (78) $ 1,046 $ — $ — $ 1,046 Commercial counterparties 159,016 — 159,016 — — 159,016 Total $ 160,140 $ (78) $ 160,062 $ — $ — $ 160,062
Schedule of Liabilities Subject to an Enforceable Master Netting Arrangement	Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts Gross Amounts Not Offset in Recognized Statements of Statements of Financial Cash (In thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount March 31, 2021 Interest Rate Swap Agreements: Institutional counterparties $ (104,770) $ 61,750 $ (43,020) $ 37,116 $ 70,333 $ 64,429 Commercial counterparties (2,582) — (2,582) — — (2,582) Total $ (107,352) $ 61,750 $ (45,602) $ 37,116 $ 70,333 $ 61,847 Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts Gross Amounts Not Offset in Recognized Statements of Statements of Financial Cash (In thousands) Liabilities Condition Condition Instruments Collateral Pledged Net Amount December 31, 2020 Interest Rate Swap Agreements: Institutional counterparties $ (164,543) $ 97,740 $ (66,803) $ 37,815 $ 75,070 $ 46,082 Commercial counterparties — — — — — — Total $ (164,543) $ 97,740 $ (66,803) $ 37,815 $ 75,070 $ 46,082

LEASES (Tables)

LEASES (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 December 31, 2020 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 56,704 $ 60,018 Finance lease right-of-use assets Premises and equipment, net 7,066 7,197 Total Lease Right-of-Use Assets $ 63,770 $ 67,215 Lease Liabilities Operating lease liabilities Other liabilities $ 61,481 $ 63,894 Finance lease liabilities Other liabilities 10,252 10,383 Total Lease Liabilities $ 71,733 $ 74,277
Supplemental Information Related to Leases	Supplemental information related to leases was as follows: March 31, 2021 December 31, 2020 Weighted-Average Remaining Lease Term (in years) Operating leases 9.8 9.8 Finance leases 13.6 13.8 Weighted-Average Discount Rate Operating leases 2.82 % 2.81 % 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, 2021 March 31, 2020 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases (1) $ 3,330 $ 3,628 Operating cash flows from finance leases 127 134 Financing cash flows from finance leases 131 124 (1) There were operating cash flows from operating leases related to discontinued operations of $0.5 million at March 31, 2020.
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, 2021: (In thousands) Operating Leases Finance Leases 2021 $ 7,966 $ 766 2022 9,774 1,031 2023 8,549 1,037 2024 7,414 1,037 2025 5,727 1,037 Thereafter 31,593 9,223 Total undiscounted lease payments 71,023 14,131 Less amounts representing interest (9,542) (3,879) Lease liability $ 61,481 $ 10,252
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, 2021: (In thousands) Operating Leases Finance Leases 2021 $ 7,966 $ 766 2022 9,774 1,031 2023 8,549 1,037 2024 7,414 1,037 2025 5,727 1,037 Thereafter 31,593 9,223 Total undiscounted lease payments 71,023 14,131 Less amounts representing interest (9,542) (3,879) Lease liability $ 61,481 $ 10,252

CAPITAL RATIOS AND SHAREHOLDE_2

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY (Tables)	3 Months Ended
	Mar. 31, 2021
Stockholders' Equity Note [Abstract]
Schedule of Actual and Required Capital Ratios	The actual and required capital ratios were as follows: March 31, December 31, Minimum Capital Requirement Company (consolidated) Total capital to risk weighted assets 16.6 % 16.1 % 8.0 % Common equity tier 1 capital to risk weighted assets 14.2 13.8 4.5 Tier 1 capital to risk weighted assets 14.4 14.1 6.0 Tier 1 capital to average assets 9.5 9.4 4.0 March 31, December 31, Regulatory Minimum to be Adequately Capitalized Regulatory Bank Total capital to risk weighted assets 15.4 % 15.0 % 8.0 % 10.0 % Common equity tier 1 capital to risk weighted assets 14.2 13.9 4.5 6.5 Tier 1 capital to risk weighted assets 14.2 13.9 6.0 8.0 Tier 1 capital to average assets 9.3 9.2 4.0 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 $ 17,975 $ 44,988 Net unrealized holding (loss) on pension plans (3,511) (3,511) Income taxes related to items of accumulated other comprehensive income: Net unrealized tax (expense) on AFS securities (4,667) (11,530) Net unrealized tax benefit on pension plans 924 924 Accumulated other comprehensive income $ 10,721 $ 30,871
Schedule of Components of Other Comprehensive Income	The following table presents the components of other comprehensive income for the three months ended March 31, 2021 and 2020: (In thousands) Before Tax Tax Effect Net of Tax Three Months Ended March 31 , 2021 Net unrealized holding gain on AFS securities: x Net unrealized (losses) arising during the period $ (27,013) $ 6,863 $ (20,150) Less: reclassification adjustment for gains realized in net income — — — Net unrealized holding (loss) on AFS securities (27,013) 6,863 (20,150) Other comprehensive (loss) $ (27,013) $ 6,863 $ (20,150) Three Months Ended March 31 , 2020 Net unrealized holding gain on AFS securities: 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
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, 2021 and 2020: (In thousands) Net unrealized Net unrealized Total Three Months Ended March 31, 2021 Balance at Beginning of Period $ 33,458 $ (2,587) $ 30,871 Other comprehensive income before reclassifications (20,150) — (20,150) Less: amounts reclassified from accumulated other comprehensive income — — — Total other comprehensive (loss) (20,150) — (20,150) Balance at End of Period $ 13,308 $ (2,587) $ 10,721 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 (1) — (1) Total other comprehensive income 19,024 — 19,024 Balance at End of Period $ 33,228 $ (2,211) $ 31,017
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, 2021 and 2020: Affected Line Item in the Three Months Ended March 31, Statement where Net Income (In thousands) 2021 2020 is Presented Realized gains on AFS securities: $ — $ (1) Non-interest income — — Tax expense — (1) Net of tax Total reclassifications for the period $ — $ (1) Net of tax

EARNINGS _ (LOSS) PER SHARE (Ta

EARNINGS / (LOSS) PER SHARE (Tables)	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	Earnings/(loss) 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) 2021 2020 Income/(loss) from continuing operations $ 13,031 $ (12,072) (Loss)/income from discontinued operations — (7,798) Net income/(loss) $ 13,031 $ (19,870) Average number of common shares issued 51,903 51,903 Less: average number of treasury shares 948 1,744 Less: average number of unvested stock award shares 625 488 Plus: average participating preferred shares — 533 Average number of basic shares outstanding 50,330 50,204 Plus: dilutive effect of unvested stock award shares 235 — Plus: dilutive effect of stock options outstanding — — Average number of diluted shares outstanding 50,565 50,204 Basic earnings/(loss) per common share: Continuing operations $ 0.26 $ (0.24) Discontinued operations — (0.16) Total $ 0.26 $ (0.40) Diluted earnings/(loss) per common share: Continuing operations $ 0.26 $ (0.24) Discontinued operations — (0.16) Total $ 0.26 $ (0.40)

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 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, 2020 517 $ 28.35 112 $ 22.95 Granted 210 16.58 — — Acquired — — — — Stock options exercised — — (5) 13.70 Stock awards vested (44) 30.63 — — Forfeited (52) 25.82 — — Expired — — (10) 17.46 March 31, 2021 631 $ 20.09 97 $ 24.85

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 and December 31, 2020, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value. March 31, 2021 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading security $ — $ — $ 9,350 $ 9,350 Securities available for sale: Municipal bonds and obligations — 90,300 — 90,300 Agency collateralized mortgage obligations — 724,554 — 724,554 Agency residential mortgage-backed securities — 447,196 — 447,196 Agency commercial mortgage-backed securities — 268,515 — 268,515 Corporate bonds — 45,014 — 45,014 Other bonds and obligations — 51,751 — 51,751 Marketable equity securities 15,129 672 — 15,801 Loans held for investment at fair value — — 1,448 1,448 Loans held for sale — 8,877 — 8,877 Derivative assets — 106,665 511 107,176 Capitalized servicing rights — — 2,968 2,968 Derivative liabilities — 47,215 — 47,215 December 31, 2020 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading security $ — $ — $ 9,708 $ 9,708 Securities available for sale: Municipal bonds and obligations — 97,803 — 97,803 Agency collateralized mortgage obligations — 756,826 — 756,826 Agency residential mortgage-backed securities — 438,132 — 438,132 Agency commercial mortgage-backed securities — 288,650 — 288,650 Corporate bonds — 45,030 15,000 60,030 Other bonds and obligations — 53,791 — 53,791 Marketable equity securities 17,841 672 — 18,513 Loans held for investment at fair value — — 2,265 2,265 Loans held for sale — 12,992 4,756 17,748 Derivative assets — 159,016 1,055 160,071 Capitalized servicing rights — — 3,033 3,033 Derivative liabilities — 65,758 — 65,758
Schedule of Loans Held for Sale	Aggregate Fair Value March 31, 2021 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 1,448 $ 44,969 $ (43,521) Aggregate Fair Value December 31, 2020 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 2,265 $ 53,945 $ (51,680) 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, 2021 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale $ 8,877 $ 8,518 $ 359 Aggregate Fair Value December 31, 2020 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale $ 12,992 $ 12,639 $ 353
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, 2021 and 2020. Assets (Liabilities) Securities Loans Capitalized Trading Available Held for Commitments Forward Servicing (In thousands) Security for Sale Investment to Lend Commitments Rights Three Months Ended March 31, 2021 December 31, 2020 $ 9,708 $ 15,000 $ 2,265 $ 735 $ 320 $ 3,033 Maturities, calls, and prepayments of — (15,000) — — — Unrealized (loss)/gain, net recognized in other non-interest income (166) — 414 818 6 (65) Paydown of asset (192) — (1,231) — — — Transfers to held for sale loans — — — (1,368) — — March 31, 2021 $ 9,350 $ — $ 1,448 $ 185 $ 326 $ 2,968 Unrealized gain/(loss) relating to instruments still held at March 31, 2021 $ 887 $ — $ — $ 185 $ 326 $ — 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 — — 7660 — — Maturity of AFS security — (9,000) — — — Unrealized gain, net recognized in other non-interest income (759) — (2,216) — — Unrealized gain included in accumulated other comprehensive loss — 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 $ —
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 (In thousands) March 31, 2021 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading security $ 9,350 Discounted Cash Flow Discount Rate 2.66 % Loan held for investment 1,448 Discounted Cash Flow Discount Rate 25.00 % Collateral Value $6.7 - $19.7 Commitments to lend 185 Historical Trend Closing Ratio 74.29 % Pricing Model Origination Costs, per loan $ 3 Forward commitments 326 Historical Trend Closing Ratio 74.29 % Pricing Model Origination Costs, per loan $ 3 Capitalized servicing rights 2,968 Discounted cash flow Constant Prepayment Rate (CPR) 21.07 % Discount Rate 10.00 % Total $ 14,277 Fair Value Significant (In thousands) December 31, 2020 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading security $ 9,708 Discounted Cash Flow Discount Rate 2.72 % AFS Securities 15,000 Indication from Market Maker Price 102.00 % Loans held for investment 2,265 Discounted Cash Flow Discount Rate 30.00 % Collateral Value $8.1- $21.9 Commitments to lend 735 Historical Trend Closing Ratio 74.54 % Pricing Model Origination Costs, per loan $ 3 Forward commitments 320 Historical Trend Closing Ratio 74.54 % Pricing Model Origination Costs, per loan $ 3 Capitalized servicing rights 3,033 Discounted Cash Flow Constant Prepayment Rate (CPR) 26.52 % Discount Rate 10.00 % Total $ 31,061 March 31, 2021 December 31, 2020 Fair Value Measurement Date as of March 31, 2021 Level 3 Level 3 Level 3 (In thousands) Inputs Inputs Inputs Assets Individually evaluated $ 21,762 $ 28,028 March 2021 Capitalized servicing rights 13,763 13,315 March 2021 Other real estate owned 149 149 March 2021 Total $ 35,674 $ 41,492
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, 2021 Valuation Techniques Unobservable Inputs Range (Weighted Average) (1) Assets Individually evaluated $ 21,762 Fair Value of Collateral Discounted Cash Flow - Loss Severity 0.32% to 100.00% (49.39%) Appraised Value $0 to $11,842 ($7,827) Capitalized servicing rights 13,763 Discounted Cash Flow Constant Prepayment Rate (CPR) 11.32% to 19.49% (15.38%) Discount Rate 8.33% to 11.00% (9.12%) Other Real Estate Owned 149 Fair Value of Collateral Appraised Value $182 Total $ 35,674 (1) 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, 2020 Valuation Techniques Unobservable Inputs Range (Weighted Average) (1) Assets Individually evaluated $ 28,028 Fair Value of Collateral Discounted Cash Flow - loss severity 0.07% to 100.00% (46.36%) Appraised Value $0 to $11,432 ($9,800) Capitalized servicing rights 13,315 Discounted Cash Flow Constant Prepayment Rate (CPR) 14.49% to 23.29% (16.98%) Discount Rate 10.00% to 11.00% (10.56%) Other Real Estate Owned 149 Fair Value of Collateral Appraised Value $94 - $182 Total $ 41,492 (1) 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. March 31, 2021 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 1,899,608 $ 1,899,608 $ 1,899,608 $ — $ — Trading security 9,350 9,350 — — 9,350 Marketable equity securities 15,801 15,801 15,129 672 — Securities available for sale 1,627,330 1,627,330 — 1,627,330 — Securities held to maturity 610,637 627,297 — 624,012 3,285 FHLB bank stock and restricted securities 28,680 N/A N/A N/A N/A Net loans 7,534,978 7,778,261 — — 7,778,261 Loans held for sale 18,377 18,377 — 8,877 9,500 Accrued interest receivable 45,990 45,990 — 45,990 — Derivative assets 107,176 107,176 — 106,665 511 Financial Liabilities Total deposits $ 10,244,370 $ 10,256,878 $ — $ 10,256,878 $ — Short-term debt — — — — — Long-term Federal Home Loan Bank advances and other 351,354 353,481 — 353,481 — Subordinated borrowings 97,338 95,729 — 95,729 — Derivative liabilities 47,215 47,215 — 47,215 — December 31, 2020 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 1,557,875 $ 1,557,875 $ 1,557,875 $ — $ — Trading security 9,708 9,708 — — 9,708 Marketable equity securities 18,513 18,513 17,841 672 — Securities available for sale and other 1,695,232 1,695,232 — 1,680,232 15,000 Securities held to maturity 465,091 491,855 — 488,393 3,462 FHLB bank stock and restricted securities 34,873 N/A N/A N/A N/A Net loans 7,954,217 8,243,437 — — 8,243,437 Loans held for sale 17,748 17,748 — 12,992 4,756 Accrued interest receivable 46,919 46,919 — 46,919 — Derivative assets 160,071 160,071 — 159,016 1,055 Assets held for sale 317,304 317,304 — 16,705 300,599 Financial Liabilities Total deposits $ 10,215,808 $ 10,230,822 $ — $ 10,230,822 $ — Short-term debt 40,000 40,025 — 40,025 — Long-term Federal Home Loan Bank advances 434,357 438,064 — 438,064 — Subordinated borrowings 97,280 95,178 — 95,178 — Derivative liabilities 65,758 65,758 — 65,758 — Liabilities held for sale 630,065 631,268 — 631,268 —

NET INTEREST INCOME AFTER PRO_2

NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 and 2020, respectively. Three Months Ended March 31, (In thousands) 2021 2020 Net interest income from continuing operations $ 75,093 $ 86,428 Provision for credit losses 6,500 34,807 Net interest income from continuing operations after provision for credit losses $ 68,593 $ 51,621

DISCONTINUED OPERATIONS AND H_3

DISCONTINUED OPERATIONS AND HELD FOR SALE - Results of Discontinued Operation (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) from discontinued operations before income taxes	$ 0	$ (10,629)
Income tax (benefit)	0	(2,831)
Net (loss)/income from discontinued operations	0	(7,798)
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	0	729
Interest expense	0	282
Net interest income	0	447
Non-interest income	0	1,358
Total net revenue	0	1,805
Non-interest expense	0	12,434
(Loss) from discontinued operations before income taxes	0	(10,629)
Income tax (benefit)	0	(2,831)
Net (loss)/income from discontinued operations	$ 0	$ (7,798)

DISCONTINUED OPERATIONS AND H_4

DISCONTINUED OPERATIONS AND HELD FOR SALE - Narrative (Details) - Mid-Atlantic Branch - Discontinued Operations, Held-for-sale $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)branch	Dec. 31, 2020USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loans	$ 283,769	$ 300,599
Deposits	$ 646,622	$ 617,377
Premium on deposits, percent	3.00%
Number of branches sold | branch	8

DISCONTINUED OPERATIONS AND H_5

DISCONTINUED OPERATIONS AND HELD FOR SALE - Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets
Total assets	$ 303,697	$ 317,304
Liabilities
Total liabilities	659,310	630,065
Mid-Atlantic Branch | Discontinued Operations, Held-for-sale
Assets
Loans	283,769	300,599
Other assets	19,928	16,705
Total assets	303,697	317,304
Liabilities
Deposits	646,622	617,377
Other liabilities	12,688	12,688
Total liabilities	$ 659,310	$ 630,065

TRADING SECURITY (Details)

TRADING SECURITY (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Amortized cost	$ 8,500	$ 8,700
Trading security, at fair value	$ 9,350	$ 9,708

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, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Securities available for sale
Amortized  Cost	$ 1,612,760	$ 1,653,977
Gross Unrealized Gains	29,930	41,816
Gross Unrealized Losses	(15,360)	(561)
Securities available for sale, at fair value	1,627,330	1,695,232
Allowance	0	0
Securities held to maturity
Amortized  Cost	610,637	465,091
Gross Unrealized Gains	22,276	26,976
Gross Unrealized Losses	(5,616)	(212)
Fair Value	627,297	491,855
Allowance	111	104	$ 141	$ 0
Marketable equity securities, amortized cost	15,707	18,061
Marketable equity securities, gross unrealized gains	218	767
Marketable equity securities, gross unrealized losses	(124)	(315)
Marketable equity securities, fair value	15,801	18,513
Total, amortized cost basis	2,239,104	2,137,129
Total, gross unrealized gain	52,424	69,559
Total, gross unrealized loss	(21,100)	(1,088)
Total, fair value	2,270,428	2,205,600
Total, Allowance	111	104
Municipal bonds and obligations
Securities available for sale
Amortized  Cost	83,922	90,273
Gross Unrealized Gains	6,378	7,530
Gross Unrealized Losses	0	0
Securities available for sale, at fair value	90,300	97,803
Allowance	0	0
Securities held to maturity
Amortized  Cost	266,609	246,520
Gross Unrealized Gains	16,884	20,106
Gross Unrealized Losses	(592)	0
Fair Value	282,901	266,626
Allowance	71	64	83	0
Agency collateralized mortgage obligations
Securities available for sale
Amortized  Cost	713,215	740,225
Gross Unrealized Gains	14,922	16,836
Gross Unrealized Losses	(3,583)	(235)
Securities available for sale, at fair value	724,554	756,826
Allowance	0	0
Securities held to maturity
Amortized  Cost	151,092	153,561
Gross Unrealized Gains	4,764	5,989
Gross Unrealized Losses	(1,054)	(171)
Fair Value	154,802	159,379
Allowance	0	0
Agency mortgage-backed securities
Securities available for sale
Amortized  Cost	453,042	433,311
Gross Unrealized Gains	2,813	4,954
Gross Unrealized Losses	(8,659)	(133)
Securities available for sale, at fair value	447,196	438,132
Allowance	0	0
Securities held to maturity
Amortized  Cost	65,052	35,865
Gross Unrealized Gains	155	198
Gross Unrealized Losses	(1,682)	(29)
Fair Value	63,525	36,034
Allowance	0	0
Agency commercial mortgage-backed securities
Securities available for sale
Amortized  Cost	267,596	278,990
Gross Unrealized Gains	4,020	9,835
Gross Unrealized Losses	(3,101)	(175)
Securities available for sale, at fair value	268,515	288,650
Allowance	0	0
Securities held to maturity
Amortized  Cost	124,379	25,481
Gross Unrealized Gains	398	590
Gross Unrealized Losses	(2,288)	(12)
Fair Value	122,489	26,059
Allowance	0	0
Corporate bonds
Securities available for sale
Amortized  Cost	44,294	59,098
Gross Unrealized Gains	729	942
Gross Unrealized Losses	(9)	(10)
Securities available for sale, at fair value	45,014	60,030
Allowance	0	0
Tax advantaged economic development bonds
Securities held to maturity
Amortized  Cost	3,210	3,369
Gross Unrealized Gains	75	93
Gross Unrealized Losses	0	0
Fair Value	3,285	3,462
Allowance	40	40	$ 58	$ 0
Other bonds and obligations
Securities available for sale
Amortized  Cost	50,691	52,080
Gross Unrealized Gains	1,068	1,719
Gross Unrealized Losses	(8)	(8)
Securities available for sale, at fair value	51,751	53,791
Allowance	0	0
Securities held to maturity
Amortized  Cost	295	295
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	295	295
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) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 104	$ 0
Provision for credit losses	7	(168)
Ending balance	111	141
Cumulative Effect, Period of Adoption, Adjustment
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance		(309)
Municipal bonds and obligations
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	64	0
Provision for credit losses	7	0
Ending balance	71	83
Municipal bonds and obligations | Cumulative Effect, Period of Adoption, Adjustment
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance		(83)
Tax advantaged economic development bonds
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	40	0
Provision for credit losses	0	(168)
Ending balance	$ 40	58
Tax advantaged economic development bonds | Cumulative Effect, Period of Adoption, Adjustment
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance		$ (226)

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, 2021	Dec. 31, 2020
Available for sale, Amortized Cost
Within 1 year	$ 31,134
Over 1 year to 5 years	7,206
Over 5 years to 10 years	51,953
Over 10 years	88,614
Total bonds and obligations	178,907
Mortgage-backed securities	1,433,853
Amortized  Cost	1,612,760	$ 1,653,977
Available for sale, Fair Value
Within 1 year	31,147
Over 1 year to 5 years	7,331
Over 5 years to 10 years	53,260
Over 10 years	95,327
Total bonds and obligations	187,065
Mortgage-backed securities	1,440,265
Fair Value	1,627,330	1,695,232
Held to maturity, Amortized Cost
Within 1 year	1,872
Over 1 year to 5 years	4,270
Over 5 years to 10 years	23,311
Over 10 years	240,661
Total bonds and obligations	270,114
Mortgage-backed securities	340,523
Amortized  Cost	610,637	465,091
Held to maturity, Fair Value
Within 1 year	1,874
Over 1 year to 5 years	4,317
Over 5 years to 10 years	24,210
Over 10 years	256,080
Total bonds and obligations	286,481
Mortgage-backed securities	340,816
Fair Value	$ 627,297	$ 491,855

SECURITIES AVAILABLE FOR SALE_6

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND MARKETABLE EQUITY SECURITIES - Narrative (Details)	3 Months Ended
	Mar. 31, 2021USD ($)securitybranch	Mar. 31, 2020USD ($)
Investment Holdings [Line Items]
Purchases of securities available for sale | $	$ 103,877,000	$ 160,925,000
Proceeds from sale of available-for-sale securities | $	0	3,520,000
Debt securities, available-for-sale, realized gain | $	0	0
Debt securities, available-for-sale, realized loss | $	$ 0	$ 1,000
Agency collateralized mortgage obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	25
Available for sale securities portfolio, number of securities	256
Available for sale securities, continuous unrealized loss position, aggregate losses	2.20%
Mortgage-backed securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	33
Available for sale securities portfolio, number of securities	125
Available for sale securities, continuous unrealized loss position, aggregate losses	2.40%
Mortgage-backed securities | Held-to-maturity Securities
Investment Holdings [Line Items]
Held-to-maturity, securities in unrealized loss positions	5
Held-to-maturity securities portfolio, number of securities | branch	13
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage	1.30%
Corporate bonds
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	1
Available for sale securities portfolio, number of securities	14
Available for sale securities, continuous unrealized loss position, aggregate losses	0.20%
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	6
Available for sale securities, continuous unrealized loss position, aggregate losses	0.90%
Municipal bonds and obligations | Held-to-maturity Securities
Investment Holdings [Line Items]
Held-to-maturity, securities in unrealized loss positions	15
Held-to-maturity securities portfolio, number of securities | branch	207
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage	2.50%
Agency mortgage-backed securities | Held-to-maturity Securities
Investment Holdings [Line Items]
Held-to-maturity, securities in unrealized loss positions	12
Held-to-maturity securities portfolio, number of securities | branch	14
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage	2.30%

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, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract]
Debt securities, available for sale securities, less than twelve months, gross unrealized losses	$ 15,338	$ 551
Debt securities, available for sale securities, over twelve months, gross unrealized losses	22	10
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	15,360	561
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	628,739	174,147
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	6,241	1,286
Debt securities, available for sale securities, continuous unrealized loss position, fair value	634,980	175,433
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	5,616	212
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	0
Held to maturity securities, accumulated unrecognized holding loss	5,616	212
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	268,990	55,974
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	0
Held to maturity securities, accumulated unrecognized holding loss, fair value	268,990	55,974
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	20,954	763
Held to maturity and available for sale securities continuous unrealized loss position, less than twelve months, fair value	897,729	230,121
Held to maturity and available for sale securities continuous unrealized loss position, over twelve months, aggregate losses	22	10
Held to maturity and available for sale securities continuous unrealized loss position, over twelve months, fair value	6,241	1,286
Held to maturity and available for sale securities continuous unrealized loss position, aggregate losses	20,976	773
Held to maturity and available for sale securities continuous unrealized loss position, fair value	903,970	231,407
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	3,583	235
Debt securities, available for sale securities, over twelve months, gross unrealized losses	0	0
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	3,583	235
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	150,110	77,898
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	0	0
Debt securities, available for sale securities, continuous unrealized loss position, fair value	150,110	77,898
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	1,054	171
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	0
Held to maturity securities, accumulated unrecognized holding loss	1,054	171
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	83,449	25,048
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	0
Held to maturity securities, accumulated unrecognized holding loss, fair value	83,449	25,048
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	8,654	131
Debt securities, available for sale securities, over twelve months, gross unrealized losses	5	2
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	8,659	133
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	346,395	39,939
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	384	256
Debt securities, available for sale securities, continuous unrealized loss position, fair value	346,779	40,195
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	1,682	29
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	0
Held to maturity securities, accumulated unrecognized holding loss	1,682	29
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	59,167	20,710
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	0
Held to maturity securities, accumulated unrecognized holding loss, fair value	59,167	20,710
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	3,101	175
Debt securities, available for sale securities, over twelve months, gross unrealized losses	0	0
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	3,101	175
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	132,234	51,435
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	0	0
Debt securities, available for sale securities, continuous unrealized loss position, fair value	132,234	51,435
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	2,288	12
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0	0
Held to maturity securities, accumulated unrecognized holding loss	2,288	12
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	103,015	10,216
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0	0
Held to maturity securities, accumulated unrecognized holding loss, fair value	103,015	10,216
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	0	10
Debt securities, available for sale securities, over twelve months, gross unrealized losses	9	0
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	9	10
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	0	4,875
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	4,876	0
Debt securities, available for sale securities, continuous unrealized loss position, fair value	4,876	4,875
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	0	0
Debt securities, available for sale securities, over twelve months, gross unrealized losses	8	8
Debt securities, available for sale securities, continuous unrealized loss position, accumulated loss	8	8
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	0	0
Debt securities, available for sale securities, continuous unrealized loss position, over twelve months, fair value	981	1,030
Debt securities, available for sale securities, continuous unrealized loss position, fair value	981	$ 1,030
Municipal bonds and obligations
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	592
Held-to-maturity securities, continuous unrealized loss position, over twelve months, gross unrealized losses	0
Held to maturity securities, accumulated unrecognized holding loss	592
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	23,359
Held to maturity securities, accumulated unrecognized holding loss, over twelve months, fair value	0
Held to maturity securities, accumulated unrecognized holding loss, fair value	$ 23,359

LOANS AND ALLOWANCE FOR CREDI_3

LOANS AND ALLOWANCE FOR CREDIT LOSSES Summary of Total Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 7,658,778	$ 8,081,519
Less: Allowance for credit losses on loans	123,800	127,302	$ 113,510	$ 63,575
Net loans	7,534,978	7,954,217
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	454,388	454,513
Less: Allowance for credit losses on loans	4,397	5,111	4,573	2,713
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	483,646	483,350
Less: Allowance for credit losses on loans	6,351	5,916	4,453	4,413
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	556,286	552,413
Less: Allowance for credit losses on loans	14,257	12,380	11,607	4,880
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,129,572	2,119,263
Less: Allowance for credit losses on loans	34,561	35,850	28,863	16,344
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,719,304	1,943,164
Less: Allowance for credit losses on loans	26,071	25,013	24,502	20,099
Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,774,504	1,931,681
Less: Allowance for credit losses on loans	25,800	28,491	26,057	9,970
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	279,017	293,981
Less: Allowance for credit losses on loans	5,749	6,482	7,780	1,470
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	262,061	303,154
Less: Allowance for credit losses on loans	$ 6,614	$ 8,059	$ 5,675	$ 3,686

LOANS AND ALLOWANCE FOR CREDI_4

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Net loans	$ 7,534,978	$ 7,954,217
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, nonaccrual, medallion loans, fair value	1,400	2,300
Financing receivable, nonaccrual, medallion loans, contractual balance	45,000	$ 53,900
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, reclassification, held for sale	9,500
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Financing Receivable, Allowance for Credit Loss [Line Items]
Net loans	$ 444,200

LOANS AND ALLOWANCE FOR CREDI_5

LOANS AND ALLOWANCE FOR CREDIT LOSSES Allowance for Credit Loss Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 127,302	$ 63,575
Charge-offs	(11,460)	(12,433)
Recoveries	1,465	1,959
Provision for Credit Losses	6,493	34,975
Balance at End of Period	123,800	113,510
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	5,111	2,713
Charge-offs	0	0
Recoveries	0	0
Provision for Credit Losses	(714)	2,202
Balance at End of Period	4,397	4,573
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	5,916	4,413
Charge-offs	(124)	0
Recoveries	62	0
Provision for Credit Losses	497	1,882
Balance at End of Period	6,351	4,453
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	12,380	4,880
Charge-offs	(376)	(6,376)
Recoveries	12	258
Provision for Credit Losses	2,241	6,783
Balance at End of Period	14,257	11,607
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	35,850	16,344
Charge-offs	(6,658)	(135)
Recoveries	126	47
Provision for Credit Losses	5,243	1,406
Balance at End of Period	34,561	28,863
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	25,013	20,099
Charge-offs	(3,320)	(4,916)
Recoveries	644	1,402
Provision for Credit Losses	3,734	10,106
Balance at End of Period	26,071	24,502
Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	28,491	9,970
Charge-offs	(377)	(171)
Recoveries	437	70
Provision for Credit Losses	(2,751)	9,389
Balance at End of Period	25,800	26,057
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	6,482	1,470
Charge-offs	(77)	(77)
Recoveries	24	2
Provision for Credit Losses	(680)	1,501
Balance at End of Period	5,749	7,780
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	8,059	3,686
Charge-offs	(528)	(758)
Recoveries	160	180
Provision for Credit Losses	(1,077)	1,706
Balance at End of Period	6,614	5,675
Cumulative Effect, Period of Adoption, Adjustment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0
Balance at End 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	0
Balance at End 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	0
Balance at End 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	0
Balance at End 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	0
Balance at End 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	0
Balance at End of Period		(2,189)
Cumulative Effect, Period of Adoption, Adjustment | Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0
Balance at End 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	0
Balance at End 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	0
Balance at End of Period		861
Cumulative Effect, Period of Adoption, Adjusted Balance
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	127,302
Balance at End 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	5,111
Balance at End 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	5,916
Balance at End 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	12,380
Balance at End 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	35,850
Balance at End 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	25,013
Balance at End of Period		17,910
Cumulative Effect, Period of Adoption, Adjusted Balance | Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	28,491
Balance at End 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	6,482
Balance at End 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	$ 8,059
Balance at End 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) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 7,629	$ 100
Expense for credit losses	200	330
Balance at end of period	7,829	8,423
Cumulative Effect, Period of Adoption, Adjustment
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	0	7,993
Cumulative Effect, Period of Adoption, Adjusted Balance
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 7,629	$ 8,093

LOANS AND ALLOWANCE FOR CREDI_7

LOANS AND ALLOWANCE FOR CREDIT LOSSES Loan Risk by Category (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 7,658,778	$ 8,081,519
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	25,422	38,374
Loans originated in year before current fiscal year	43,662	255,377
Loans originated in two years before current fiscal year	275,525	115,003
Loans originated in three years before current fiscal year	75,113	32,474
Loans originated in four years before current fiscal year	31,165	9,519
Prior	2,501	2,766
Revolving Loans Amortized Cost Basis	1,000	1,000
Revolving Loans Converted to Term	0	0
Total loans	454,388	454,513
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	17,100	31,438
Loans originated in year before current fiscal year	31,295	57,659
Loans originated in two years before current fiscal year	57,397	74,932
Loans originated in three years before current fiscal year	74,123	77,746
Loans originated in four years before current fiscal year	78,148	81,113
Prior	225,379	160,297
Revolving Loans Amortized Cost Basis	204	165
Revolving Loans Converted to Term	0	0
Total loans	483,646	483,350
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	13,652	58,862
Loans originated in year before current fiscal year	53,699	88,674
Loans originated in two years before current fiscal year	86,128	109,530
Loans originated in three years before current fiscal year	103,693	67,387
Loans originated in four years before current fiscal year	66,741	46,539
Prior	230,867	180,227
Revolving Loans Amortized Cost Basis	1,506	1,194
Revolving Loans Converted to Term	0	0
Total loans	556,286	552,413
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	77,638	188,324
Loans originated in year before current fiscal year	182,933	296,194
Loans originated in two years before current fiscal year	296,327	441,743
Loans originated in three years before current fiscal year	476,419	250,525
Loans originated in four years before current fiscal year	245,564	317,143
Prior	832,044	608,678
Revolving Loans Amortized Cost Basis	18,647	16,656
Revolving Loans Converted to Term	0	0
Total loans	2,129,572	2,119,263
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	25,386	763,119
Loans originated in year before current fiscal year	574,516	204,621
Loans originated in two years before current fiscal year	179,440	235,869
Loans originated in three years before current fiscal year	233,539	141,601
Loans originated in four years before current fiscal year	120,947	53,431
Prior	194,817	153,917
Revolving Loans Amortized Cost Basis	390,659	390,606
Revolving Loans Converted to Term	0	0
Total loans	1,719,304	1,943,164
Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	55,071	151,958
Loans originated in year before current fiscal year	149,322	146,181
Loans originated in two years before current fiscal year	127,848	273,556
Loans originated in three years before current fiscal year	220,621	322,716
Loans originated in four years before current fiscal year	275,878	333,576
Prior	942,503	700,404
Revolving Loans Amortized Cost Basis	3,261	3,290
Revolving Loans Converted to Term	0	0
Total loans	1,774,504	1,931,681
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	703	2,445
Loans originated in year before current fiscal year	2,623	1,960
Loans originated in two years before current fiscal year	1,469	317
Loans originated in three years before current fiscal year	309	1,859
Loans originated in four years before current fiscal year	1,829	499
Prior	2,234	1,882
Revolving Loans Amortized Cost Basis	269,850	285,019
Revolving Loans Converted to Term	0	0
Total loans	279,017	293,981
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	4,870	15,232
Loans originated in year before current fiscal year	14,153	35,633
Loans originated in two years before current fiscal year	31,305	103,241
Loans originated in three years before current fiscal year	88,530	70,965
Loans originated in four years before current fiscal year	59,210	37,006
Prior	56,018	31,734
Revolving Loans Amortized Cost Basis	7,975	9,343
Revolving Loans Converted to Term	0	0
Total loans	262,061	303,154
Pass | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	25,422	38,374
Loans originated in year before current fiscal year	43,662	255,377
Loans originated in two years before current fiscal year	275,525	114,690
Loans originated in three years before current fiscal year	65,371	28,474
Loans originated in four years before current fiscal year	27,177	9,519
Prior	2,501	2,766
Revolving Loans Amortized Cost Basis	1,000	1,000
Revolving Loans Converted to Term	0	0
Total loans	440,658	450,200
Pass | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	17,100	31,438
Loans originated in year before current fiscal year	31,295	57,659
Loans originated in two years before current fiscal year	55,210	74,932
Loans originated in three years before current fiscal year	74,123	77,746
Loans originated in four years before current fiscal year	78,148	81,066
Prior	219,175	153,818
Revolving Loans Amortized Cost Basis	61	20
Revolving Loans Converted to Term	0	0
Total loans	475,112	476,679
Pass | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	13,652	58,327
Loans originated in year before current fiscal year	53,164	84,839
Loans originated in two years before current fiscal year	81,473	104,797
Loans originated in three years before current fiscal year	99,224	64,693
Loans originated in four years before current fiscal year	63,148	44,300
Prior	218,342	169,197
Revolving Loans Amortized Cost Basis	1,506	1,194
Revolving Loans Converted to Term	0	0
Total loans	530,509	527,347
Pass | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	77,638	180,520
Loans originated in year before current fiscal year	174,898	292,386
Loans originated in two years before current fiscal year	292,528	435,440
Loans originated in three years before current fiscal year	469,718	223,935
Loans originated in four years before current fiscal year	218,525	303,221
Prior	725,223	497,066
Revolving Loans Amortized Cost Basis	17,394	15,393
Revolving Loans Converted to Term	0	0
Total loans	1,975,924	1,947,961
Pass | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	25,240	754,260
Loans originated in year before current fiscal year	563,757	159,046
Loans originated in two years before current fiscal year	131,781	205,651
Loans originated in three years before current fiscal year	203,153	130,985
Loans originated in four years before current fiscal year	110,240	48,326
Prior	182,949	148,222
Revolving Loans Amortized Cost Basis	372,075	368,769
Revolving Loans Converted to Term	0	0
Total loans	1,589,195	1,815,259
Pass | Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	55,071	150,583
Loans originated in year before current fiscal year	148,622	146,142
Loans originated in two years before current fiscal year	127,817	272,399
Loans originated in three years before current fiscal year	218,785	320,384
Loans originated in four years before current fiscal year	273,160	333,159
Prior	931,322	691,078
Revolving Loans Amortized Cost Basis	3,261	3,281
Revolving Loans Converted to Term	0	0
Total loans	1,758,038	1,917,026
Special Mention | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	0
Loans originated in year before current fiscal year	0	0
Loans originated in two years before current fiscal year	0	313
Loans originated in three years before current fiscal year	313	0
Loans originated in four years before current fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	313	313
Special Mention | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	0
Loans originated in year before current fiscal year	0	0
Loans originated in two years before current fiscal year	2,187	0
Loans originated in three years before current fiscal year	0	0
Loans originated in four years before current fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	2,187	0
Special Mention | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	535
Loans originated in year before current fiscal year	535	2,569
Loans originated in two years before current fiscal year	3,389	1,136
Loans originated in three years before current fiscal year	1,136	1,009
Loans originated in four years before current fiscal year	1,966	800
Prior	2,432	2,579
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	9,458	8,628
Special Mention | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	0
Loans originated in year before current fiscal year	231	279
Loans originated in two years before current fiscal year	270	2,068
Loans originated in three years before current fiscal year	2,971	6,958
Loans originated in four years before current fiscal year	6,904	11,798
Prior	58,403	44,961
Revolving Loans Amortized Cost Basis	1,059	1,068
Revolving Loans Converted to Term	0	0
Total loans	69,838	67,132
Special Mention | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	1,467
Loans originated in year before current fiscal year	1,952	5,753
Loans originated in two years before current fiscal year	9,887	5,267
Loans originated in three years before current fiscal year	7,477	2,851
Loans originated in four years before current fiscal year	3,881	1,601
Prior	4,011	65
Revolving Loans Amortized Cost Basis	10,806	12,408
Revolving Loans Converted to Term	0	0
Total loans	38,014	29,412
Special Mention | Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	384
Loans originated in year before current fiscal year	0	0
Loans originated in two years before current fiscal year	0	454
Loans originated in three years before current fiscal year	0	1,430
Loans originated in four years before current fiscal year	284	0
Prior	814	362
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	1,098	2,630
Substandard Accruing | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	0
Loans originated in year before current fiscal year	0	0
Loans originated in two years before current fiscal year	0	0
Loans originated in three years before current fiscal year	9,429	4,000
Loans originated in four years before current fiscal year	3,988	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	13,417	4,000
Substandard Accruing | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	0
Loans originated in year before current fiscal year	0	0
Loans originated in two years before current fiscal year	0	0
Loans originated in three years before current fiscal year	0	0
Loans originated in four years before current fiscal year	0	47
Prior	6,204	6,479
Revolving Loans Amortized Cost Basis	143	145
Revolving Loans Converted to Term	0	0
Total loans	6,347	6,671
Substandard Accruing | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	0
Loans originated in year before current fiscal year	0	1,266
Loans originated in two years before current fiscal year	1,266	3,597
Loans originated in three years before current fiscal year	3,333	1,685
Loans originated in four years before current fiscal year	1,627	1,439
Prior	10,093	8,451
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total loans	16,319	16,438
Substandard Accruing | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	7,804
Loans originated in year before current fiscal year	7,804	3,529
Loans originated in two years before current fiscal year	3,529	4,235
Loans originated in three years before current fiscal year	3,730	19,632
Loans originated in four years before current fiscal year	20,135	2,124
Prior	48,418	66,651
Revolving Loans Amortized Cost Basis	194	195
Revolving Loans Converted to Term	0	0
Total loans	83,810	104,170
Substandard Accruing | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	146	7,392
Loans originated in year before current fiscal year	8,807	39,822
Loans originated in two years before current fiscal year	37,772	24,951
Loans originated in three years before current fiscal year	22,909	7,765
Loans originated in four years before current fiscal year	6,826	3,504
Prior	7,857	5,630
Revolving Loans Amortized Cost Basis	7,456	9,099
Revolving Loans Converted to Term	0	0
Total loans	91,773	98,163
Substandard Accruing | Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	991
Loans originated in year before current fiscal year	700	39
Loans originated in two years before current fiscal year	31	703
Loans originated in three years before current fiscal year	1,836	902
Loans originated in four years before current fiscal year	2,434	417
Prior	10,367	8,964
Revolving Loans Amortized Cost Basis	0	9
Revolving Loans Converted to Term	0	0
Total loans	15,368	12,025
Doubtful | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	0
Loans originated in year before current fiscal year	0	0
Loans originated in two years before current fiscal year	0	0
Loans originated in three years before current fiscal year	0	0
Loans originated in four years before current fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	322	330
Revolving Loans Converted to Term	0	0
Total loans	322	330
Performing | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	703	2,445
Loans originated in year before current fiscal year	2,623	1,960
Loans originated in two years before current fiscal year	1,469	316
Loans originated in three years before current fiscal year	309	1,859
Loans originated in four years before current fiscal year	1,829	499
Prior	2,234	1,882
Revolving Loans Amortized Cost Basis	267,103	282,123
Revolving Loans Converted to Term	0	0
Total loans	276,270	291,084
Performing | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	4,870	15,193
Loans originated in year before current fiscal year	14,084	35,317
Loans originated in two years before current fiscal year	30,924	101,730
Loans originated in three years before current fiscal year	87,205	69,366
Loans originated in four years before current fiscal year	57,753	35,421
Prior	54,399	31,327
Revolving Loans Amortized Cost Basis	7,965	9,339
Revolving Loans Converted to Term	0	0
Total loans	257,200	297,693
Performing | Special Mention
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	121,437	109,299
Performing | Substandard Accruing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	179,150	185,207
Nonperforming | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	0
Loans originated in year before current fiscal year	0	0
Loans originated in two years before current fiscal year	0	1
Loans originated in three years before current fiscal year	0	0
Loans originated in four years before current fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	2,747	2,896
Revolving Loans Converted to Term	0	0
Total loans	2,747	2,897
Nonperforming | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans originated in current fiscal year	0	39
Loans originated in year before current fiscal year	69	316
Loans originated in two years before current fiscal year	381	1,511
Loans originated in three years before current fiscal year	1,325	1,599
Loans originated in four years before current fiscal year	1,457	1,585
Prior	1,619	407
Revolving Loans Amortized Cost Basis	10	4
Revolving Loans Converted to Term	0	0
Total loans	$ 4,861	$ 5,461

LOANS AND ALLOWANCE FOR CREDI_8

LOANS AND ALLOWANCE FOR CREDIT LOSSES Loans Past Due (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	$ 90,506	$ 92,708
Current	7,568,272	7,988,811
Total loans	7,658,778	8,081,519
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	3,988	0
Current	450,400	454,513
Total loans	454,388	454,513
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	4,068	757
Current	479,578	482,593
Total loans	483,646	483,350
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	11,271	6,334
Current	545,015	546,079
Total loans	556,286	552,413
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	22,493	38,872
Current	2,107,079	2,080,391
Total loans	2,129,572	2,119,263
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	20,505	19,257
Current	1,698,799	1,923,907
Total loans	1,719,304	1,943,164
Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	18,564	15,813
Current	1,755,940	1,915,868
Total loans	1,774,504	1,931,681
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	3,553	3,425
Current	275,464	290,556
Total loans	279,017	293,981
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	6,064	8,250
Current	255,997	294,904
Total loans	262,061	303,154
30-59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	25,033	8,561
30-59 Days Past Due | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	3,988	0
30-59 Days Past Due | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	0	0
30-59 Days Past Due | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	6,174	809
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	703	315
30-59 Days Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	9,479	3,016
30-59 Days Past Due | Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	2,990	2,068
30-59 Days Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	647	244
30-59 Days Past Due | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	1,052	2,109
60-89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	3,532	7,749
60-89 Days Past Due | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	0	0
60-89 Days Past Due | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	0	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	487	631
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	0	168
60-89 Days Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	1,540	3,259
60-89 Days Past Due | Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	1,098	2,630
60-89 Days Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	159	284
60-89 Days Past Due | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	248	777
90 Days or Greater Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	61,941	76,398
90 Days or Greater Past Due | Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	0	0
90 Days or Greater Past Due | Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	4,068	757
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	4,610	4,894
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	21,790	38,389
90 Days or Greater Past Due | Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	9,486	12,982
90 Days or Greater Past Due | Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	14,476	11,115
90 Days or Greater Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	2,747	2,897
90 Days or Greater Past Due | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total Past Due	$ 4,764	$ 5,364

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	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	$ 55,817	$ 64,948
Nonaccrual With No Related Allowance	28,234	27,418
Past Due 90 Days or Greater and Accruing	6,124	11,450
Interest Income Recognized on Nonaccrual	0	0
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Nonaccrual With No Related Allowance	0	0
Past Due 90 Days or Greater and Accruing	0	0
Interest Income Recognized on Nonaccrual	0	0
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	4,068	757
Nonaccrual With No Related Allowance	4,068	591
Past Due 90 Days or Greater and Accruing	0	0
Interest Income Recognized on Nonaccrual	0	0
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	4,232	4,509
Nonaccrual With No Related Allowance	1,832	2,290
Past Due 90 Days or Greater and Accruing	378	385
Interest Income Recognized on Nonaccrual	0	0
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	18,856	29,572
Nonaccrual With No Related Allowance	11,691	13,912
Past Due 90 Days or Greater and Accruing	2,934	8,817
Interest Income Recognized on Nonaccrual	0	0
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	9,364	12,441
Nonaccrual With No Related Allowance	3,005	4,725
Past Due 90 Days or Greater and Accruing	122	541
Interest Income Recognized on Nonaccrual	0	0
Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	11,941	9,711
Nonaccrual With No Related Allowance	7,419	5,739
Past Due 90 Days or Greater and Accruing	2,535	1,404
Interest Income Recognized on Nonaccrual	0	0
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	2,599	2,654
Nonaccrual With No Related Allowance	211	159
Past Due 90 Days or Greater and Accruing	148	243
Interest Income Recognized on Nonaccrual	0	0
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	4,757	5,304
Nonaccrual With No Related Allowance	8	2
Past Due 90 Days or Greater and Accruing	7	60
Interest Income Recognized on Nonaccrual	$ 0	$ 0

LOANS AND RELATED ALLOWANCE FOR

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES Summary of Total Loans Rated Special Mention or Lower (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	$ 7,658,778	$ 8,081,519
Non-Accrual | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	55,817	64,948
Substandard Accruing | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	179,150	185,207
Total Classified | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	234,967	250,155
Special Mention | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	121,437	109,299
Total Criticized | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, before allowance for credit loss	$ 356,404	$ 359,454

LOANS AND ALLOWANCE FOR CRED_10

LOANS AND ALLOWANCE FOR CREDIT LOSSES Summary of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	$ 55,817	$ 64,948
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	38,867	43,505
Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	18	36
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	977	3,758
Commercial | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Commercial | Construction | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Commercial | Construction | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Commercial | Construction | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Commercial | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	4,068	757
Commercial | Commercial multifamily | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	4,070	591
Commercial | Commercial multifamily | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Commercial | Commercial multifamily | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	4,232	4,509
Commercial real estate | Commercial real estate owner occupied | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	5,351	5,714
Commercial real estate | Commercial real estate owner occupied | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Commercial real estate | Commercial real estate owner occupied | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	18,856	29,572
Commercial real estate | Commercial real estate non-owner occupied | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	20,805	30,950
Commercial real estate | Commercial real estate non-owner occupied | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Commercial real estate | Commercial real estate non-owner occupied | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	9,364	12,441
Commercial and industrial loans | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	1,361	973
Commercial and industrial loans | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	18	36
Commercial and industrial loans | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	977	3,758
Residential mortgages | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	11,941	9,711
Residential mortgages | Residential real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	7,048	5,081
Residential mortgages | Residential real estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Residential mortgages | Residential real estate | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	2,599	2,654
Consumer loans | Home equity | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	198	145
Consumer loans | Home equity | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Consumer loans | Home equity | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	4,757	5,304
Consumer loans | Consumer other | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	34	51
Consumer loans | Consumer other | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	0	0
Consumer loans | Consumer other | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Non-accrual loans	$ 0	$ 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, 2021	Mar. 31, 2020
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	$ 20,548	$ 19,316
Principal Payments	(268)	(5,769)
TDR Status Change	0	0
Other reductions	511	0
Newly identified TDRs	690	902
Balance at end of the period	21,481	14,449
Commercial | Construction
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	0	0
Principal Payments	0	0
TDR Status Change	0	0
Other reductions	0	0
Newly identified TDRs	0	0
Balance at end of the period	0	0
Commercial | Commercial multifamily
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	754	793
Principal Payments	(13)	(14)
TDR Status Change	0	0
Other reductions	0	0
Newly identified TDRs	0	0
Balance at end of the period	741	779
Commercial real estate | Commercial real estate owner occupied
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	1,731	13,331
Principal Payments	(6)	(5,693)
TDR Status Change	0	0
Other reductions	0	0
Newly identified TDRs	0	0
Balance at end of the period	1,725	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	13,684	1,373
Principal Payments	(14)	0
TDR Status Change	0	0
Other reductions	511	0
Newly identified TDRs	544	0
Balance at end of the period	14,725	1,373
Commercial and industrial loans
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	2,686	1,449
Principal Payments	(199)	(37)
TDR Status Change	0	0
Other reductions	0	0
Newly identified TDRs	146	902
Balance at end of the period	2,633	2,314
Residential mortgages | Residential real estate
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	1,524	2,045
Principal Payments	(31)	(22)
TDR Status Change	0	0
Other reductions	0	0
Newly identified TDRs	0	0
Balance at end of the period	1,493	2,023
Consumer loans | Home equity
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	133	277
Principal Payments	(3)	1
TDR Status Change	0	0
Other reductions	0	0
Newly identified TDRs	0	0
Balance at end of the period	130	278
Consumer loans | Consumer other
Trouble Debt Restructuring on Financing Receivables [Roll Forward]
Balance at beginning of the period	36	48
Principal Payments	(2)	(4)
TDR Status Change	0	0
Other reductions	0	0
Newly identified TDRs	0	0
Balance at end of the period	$ 34	$ 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
	Mar. 31, 2021USD ($)Loan	Mar. 31, 2020USD ($)Loan
Credit Loss [Abstract]
Number of loans | Loan	4,000	3,000
Pre-modification outstanding recorded investment	$ 690	$ 902
Post-modification outstanding recorded investment	$ 690	$ 902

DEPOSITS (Details)

DEPOSITS (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Deposits [Abstract]
Time less than $100,000	$ 630,244	$ 663,324
Time $100,000 through $250,000	999,329	1,219,210
Time more than $250,000	473,649	502,551
Total time deposits	2,103,222	2,385,085
Brokered time deposits	431,500	610,600
Reciprocal deposits	$ 100,700	$ 119,000

BORROWED FUNDS - Summary of Bor

BORROWED FUNDS - Summary of Borrowed Funds (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal, Short-term borrowings	$ 0	$ 40,000
Principal, Long-term borrowings	448,692	531,637
Total borrowings	$ 448,692	$ 571,637
Weighted average rate on short-term borrowings	0.00%	1.05%
Weighted average rate on long-term borrowings	2.73%	2.61%
Weighted average rate	2.73%	2.50%
Advances from the FHLB
Debt Instrument [Line Items]
Principal, Short-term borrowings	$ 0	$ 40,000
Principal, Long-term borrowings	$ 351,354	$ 434,357
Weighted average rate on short-term borrowings	0.00%	1.05%
Weighted average rate on long-term borrowings	1.88%	1.89%
Subordinated borrowings
Debt Instrument [Line Items]
Principal, Long-term borrowings	$ 74,455	$ 74,411
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	2.03%	2.06%
Junior subordinated borrowing - Trust II
Debt Instrument [Line Items]
Principal, Long-term borrowings	$ 7,419	$ 7,405
Weighted average rate on long-term borrowings	1.88%	1.92%

BORROWED FUNDS - Narrative (Det

BORROWED FUNDS - Narrative (Details) - USD ($)	1 Months Ended	3 Months Ended
	Sep. 30, 2012	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Line of credit, current		$ 3,000,000
Short-term debt		0	$ 40,000,000
Long-term borrowings		448,692,000	531,637,000
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		0	40,000,000
Long-term borrowings		351,354,000	434,357,000
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		4,800,000	5,200,000
Subordinated borrowings
Debt Instrument [Line Items]
Long-term borrowings		74,455,000	74,411,000
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		$ 184,000	$ 215,000
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		2.03%	2.06%
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		1.88%	1.92%
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		$ 596,800,000	$ 815,600,000
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, 2021USD ($)
Principal
2021	$ 272,985
2022	58,270
2023	10,659
2024	50
2025 and beyond	9,390
Total FHLB advances	$ 351,354
Weighted Average Rate
Weighted Average Rate
2021	1.86%
2022	1.92%
2023	2.16%
2024	0.00%
2025 and beyond	1.63%
Total FHLB advances	1.88%

DERIVATIVE FINANCIAL INSTRUME_3

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional amount	$ 3,810,420,000	$ 3,857,115,000
Cash collateral pledged	70,300,000
Amortized cost of securities pledged as collateral to derivative counterparties	36,900,000
Fair value of securities as pledged collateral to derivative counterparties	37,100,000
Commercial counterparties
Derivative [Line Items]
Net asset position	1,300,000	1,000,000
Interest rate swaps
Derivative [Line Items]
Notional amount	8,500,000
Cash collateral pledged	70,333,000	75,070,000
Interest rate swaps | Commercial counterparties
Derivative [Line Items]
Cash collateral pledged	0	0
Net asset position	103,800,000	159,000,000
Derivative liability, amount offset against collateral	2,600,000	0
Interest rate swaps | Institutional counterparties
Derivative [Line Items]
Cash collateral pledged	70,333,000	75,070,000
Derivative liability, amount offset against collateral	43,000,000	66,800,000
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amount	10,316,000	$ 40,099,000
Economic hedges
Derivative [Line Items]
Notional amount	3,800,000,000
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	$ 8,700,000

DERIVATIVE FINANCIAL INSTRUME_4

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 3,810,420	$ 3,857,115
Estimated fair value asset (liability)	59,961	94,313
Impact of settled to market contracts	61,300	97,600
Interest rate swaps
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	8,500
Total economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	3,800,000
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	8,700
Designated as Hedging Instrument | Total economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	3,800,104	3,817,016
Estimated fair value asset (liability)	59,776	93,578
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	$ 8,463	$ 8,654
Weighted average maturity	8 years 8 months 12 days	8 years 10 months 24 days
Weighted average rate, received	0.48%	0.52%
Weighted average rate, contract pay rate	5.09%	5.09%
Estimated fair value asset (liability)	$ (1,432)	$ (1,778)
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	$ 1,720,659	$ 1,734,978
Weighted average maturity	6 years	6 years 1 month 6 days
Weighted average rate, received	4.15%	4.15%
Weighted average rate, contract pay rate	1.92%	1.95%
Estimated fair value asset (liability)	$ 101,216	$ 159,016
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	$ 1,720,659	$ 1,734,978
Weighted average maturity	6 years	6 years 1 month 6 days
Weighted average rate, received	1.92%	1.95%
Weighted average rate, contract pay rate	4.15%	4.15%
Estimated fair value asset (liability)	$ (40,670)	$ (64,645)
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	$ 341,662	$ 326,862
Weighted average maturity	8 years 9 months 18 days	8 years
Estimated fair value asset (liability)	$ 336	$ 665
Designated as Hedging Instrument | Total economic hedges | Forward sale commitments
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 8,661	$ 11,544
Weighted average maturity	2 months 12 days	2 months 12 days
Estimated fair value asset (liability)	$ 326	$ 320
Not Designated as Hedging Instrument
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	10,316	40,099
Estimated fair value asset (liability)	185	735
Not Designated as Hedging Instrument | Commitments to lend
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional amount	$ 10,316	$ 40,099
Weighted average maturity	2 months 12 days	2 months 12 days
Estimated fair value asset (liability)	$ 185	$ 735

DERIVATIVE FINANCIAL INSTRUME_5

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Economic Hedges and Non-hedging Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest rate swaps | Economic hedges | Industrial revenue bond
Derivative [Line Items]
Unrealized (loss)/gain recognized in other non-interest income	$ 346	$ (563)
Interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Unrealized (loss)/gain recognized in other non-interest income	(60,302)	102,382
Favorable/(unfavorable) change in credit valuation adjustment recognized in other non-interest income	2,502	(2,538)
Reverse interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Unrealized (loss)/gain recognized in other non-interest income	60,302	(102,382)
Risk participation agreements | Economic hedges
Derivative [Line Items]
Unrealized (loss)/gain recognized in other non-interest income	(329)	266
Forward commitments | Economic hedges
Derivative [Line Items]
Unrealized (loss)/gain recognized in other non-interest income	6	(4,263)
Realized gain/(loss) in other non-interest income	(6)	(1,922)
Commitments to lend | Non-hedging derivatives
Derivative [Line Items]
Unrealized (loss)/gain recognized in other non-interest income	(550)	2,208
Realized gain/(loss) in other non-interest income	$ 1,352	$ 9,300

DERIVATIVE FINANCIAL INSTRUME_6

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Offsetting of Financial Assets and Derivative Assets (Details) - Interest rate swaps - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Offsetting of Financial Assets and Derivative Assets
Gross amounts of recognized assets	$ 106,885	$ 160,140
Gross amounts offset in the Statements of Condition	(1,832)	(78)
Net amounts of assets presented in the Statements of Condition	105,053	160,062
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	105,053	160,062
Institutional counterparties
Offsetting of Financial Assets and Derivative Assets
Gross amounts of recognized assets	3,086	1,124
Gross amounts offset in the Statements of Condition	(1,832)	(78)
Net amounts of assets presented in the Statements of Condition	1,254	1,046
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	1,254	1,046
Commercial counterparties
Offsetting of Financial Assets and Derivative Assets
Gross amounts of recognized assets	103,799	159,016
Gross amounts offset in the Statements of Condition	0	0
Net amounts of assets presented in the Statements of Condition	103,799	159,016
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	$ 103,799	$ 159,016

DERIVATIVE FINANCIAL INSTRUME_7

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Offsetting Financial Liabilities and Derivative Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts not offset in the Statements of Condition, cash collateral pledged	$ 70,300
Interest rate swaps
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts of recognized liabilities	(107,352)	$ (164,543)
Gross amounts offset in the Statements of Condition	61,750	97,740
Net amounts of liabilities presented in the Statements of Condition	(45,602)	(66,803)
Gross amounts not offset in the Statements of Condition, financial instruments	37,116	37,815
Gross amounts not offset in the Statements of Condition, cash collateral pledged	70,333	75,070
Net Amount	61,847	46,082
Interest rate swaps | Institutional counterparties
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts of recognized liabilities	(104,770)	(164,543)
Gross amounts offset in the Statements of Condition	61,750	97,740
Net amounts of liabilities presented in the Statements of Condition	(43,020)	(66,803)
Gross amounts not offset in the Statements of Condition, financial instruments	37,116	37,815
Gross amounts not offset in the Statements of Condition, cash collateral pledged	70,333	75,070
Net Amount	64,429	46,082
Interest rate swaps | Commercial counterparties
Offsetting of Financial Liabilities and Derivative Liabilities
Gross amounts of recognized liabilities	(2,582)	0
Gross amounts offset in the Statements of Condition	0	0
Net amounts of liabilities presented in the Statements of Condition	(2,582)	0
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	$ (2,582)	$ 0

LEASES - Narrative (Details)

LEASES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 2.8	$ 3.5
Minimum
Lessee, Lease, Description [Line Items]
Operating lease contract term	1 month
Maximum
Lessee, Lease, Description [Line Items]
Operating lease contract term	19 years
Discontinued Operations
Lessee, Lease, Description [Line Items]
Operating lease expense		$ 0.5

LEASES - Assets and Liabilities

LEASES - Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Lease Right-of-Use Assets
Operating lease right-of-use assets	$ 56,704	$ 60,018
Finance lease right-of-use assets	7,066	7,197
Total Lease Right-of-Use Assets	63,770	67,215
Lease Liabilities
Operating lease liabilities	61,481	63,894
Finance lease liabilities	10,252	10,383
Total Lease Liabilities	$ 71,733	$ 74,277
Operating lease, right of use asset, statement of financial position	Other assets	Other assets
Finance lease, right of use asset, statement of financial position	Premises and equipment, net	Premises and equipment, net
Operating lease, liability, statement of financial position	Other liabilities	Other liabilities
Finance lease, liability, statement of financial position	Other liabilities	Other liabilities

LEASES - Supplemental Lease Inf

LEASES - Supplemental Lease Information (Details)	Mar. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease, weighted average remaining lease term	9 years 9 months 18 days	9 years 9 months 18 days
Finance Lease, Weighted Average Remaining Lease Term	13 years 7 months 6 days	13 years 9 months 18 days
Operating lease, weighted average discount rate, percent	2.82%	2.81%
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, 2021	Mar. 31, 2020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 3,330	$ 3,628
Operating cash flows from finance leases	127	134
Financing cash flows from finance leases	131	$ 124
Discontinued Operations
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 500

LEASES - Maturity Analysis of L

LEASES - Maturity Analysis of Lease Liability (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Operating Leases
2021	$ 7,966
2022	9,774
2023	8,549
2024	7,414
2025	5,727
Thereafter	31,593
Total undiscounted lease payments	71,023
Less amounts representing interest	(9,542)
Lease liability	61,481	$ 63,894
Finance Leases
2021	766
2022	1,031
2023	1,037
2024	1,037
2025	1,037
Thereafter	9,223
Total undiscounted lease payments	14,131
Less amounts representing interest	(3,879)
Lease liability	$ 10,252	$ 10,383

OTHER COMMITMENTS, CONTINGENC_2

OTHER COMMITMENTS, CONTINGENCIES, OFF-BALANCE SHEET ACTIVITIES, AND PANDEMIC IMPACT Narrative (Details) $ in Millions	Mar. 31, 2021USD ($)Loan	Dec. 31, 2020USD ($)Loan
Commitments and Contingencies Disclosure [Abstract]
Active modified loans | Loan	337	746
Active modified loans, carrying value | $	$ 173	$ 316

CAPITAL RATIOS AND SHAREHOLDE_3

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Actual and Required Capital Ratios (Details)	Mar. 31, 2021	Dec. 31, 2020
Tier 1 capital to risk-weighted assets
Total capital to risk weighted assets	0.166	0.161
Common equity tier 1 capital to risk weighted assets	14.20%	13.80%
Tier 1 capital to risk weighted assets	0.144	0.141
Tier 1 capital to average assets	0.095	0.094
Bank
Tier 1 capital to risk-weighted assets
Total capital to risk weighted assets	0.154	0.150
Common equity tier 1 capital to risk weighted assets	14.20%	13.90%
Tier 1 capital to risk weighted assets	0.142	0.139
Tier 1 capital to average assets	0.093	0.092

CAPITAL RATIOS AND SHAREHOLDE_4

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Components of AOCI (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders’ equity	$ 1,175,139	$ 1,187,773	$ 1,722,278	$ 1,758,564
Accumulated other comprehensive income
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders’ equity	10,721	30,871	31,017	11,993
Net unrealized holding gain on AFS securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income (loss), before tax	17,975	44,988
Income taxes related to items of accumulated other comprehensive income	(4,667)	(11,530)
Total shareholders’ equity	13,308	33,458	33,228	14,204
Net unrealized holding (loss) on pension plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income (loss), before tax	(3,511)	(3,511)
Income taxes related to items of accumulated other comprehensive income	924	924
Total shareholders’ equity	$ (2,587)	$ (2,587)	$ (2,211)	$ (2,211)

CAPITAL RATIOS AND SHAREHOLDE_5

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Components of OCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net unrealized gains (losses) arising during the period
Net of Tax	$ (20,150)	$ 19,023
Less: reclassification adjustment for gains realized in net income
Net of Tax	0	(1)
Other comprehensive income (loss)
Before Tax	(27,013)	25,614
Tax Effect	6,863	(6,590)
Total other comprehensive (loss)/income	(20,150)	19,024
Net unrealized holding gain on AFS securities
Net unrealized gains (losses) arising during the period
Before Tax	(27,013)	25,613
Tax Effect	6,863	(6,590)
Net of Tax	(20,150)	19,023
Less: reclassification adjustment for gains realized in net income
Before Tax	0	(1)
Tax Effect	0	0
Net of Tax	0	(1)
Other comprehensive income (loss)
Before Tax	(27,013)	25,614
Tax Effect	6,863	(6,590)
Total other comprehensive (loss)/income	$ (20,150)	$ 19,024

CAPITAL RATIOS AND SHAREHOLDE_6

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Changes in AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	$ 1,187,773	$ 1,758,564
Other comprehensive income (loss) before reclassifications	(20,150)	19,023
Less: amounts reclassified from accumulated other comprehensive income	0	(1)
Total other comprehensive (loss)/income	(20,150)	19,024
Balance at end of period	1,175,139	1,722,278
Accumulated other comprehensive income
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	30,871	11,993
Total other comprehensive (loss)/income	(20,150)	19,024
Balance at end of period	10,721	31,017
Net unrealized holding gain on AFS securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	33,458	14,204
Other comprehensive income (loss) before reclassifications	(20,150)	19,023
Less: amounts reclassified from accumulated other comprehensive income	0	(1)
Total other comprehensive (loss)/income	(20,150)	19,024
Balance at end of period	13,308	33,228
Net unrealized holding (loss) on pension plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Balance at beginning of period	(2,587)	(2,211)
Other comprehensive income (loss) before reclassifications	0	0
Less: amounts reclassified from accumulated other comprehensive income	0	0
Total other comprehensive (loss)/income	0	0
Balance at end of period	$ (2,587)	$ (2,211)

CAPITAL RATIOS AND SHAREHOLDE_7

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Amounts Reclassified Out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest income	$ 26,193	$ 5,636
Tax expense	(3,601)	1,996
Income/(loss) available to common shareholders	13,031	(19,995)
Amount Reclassified From Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Income/(loss) available to common shareholders	0	(1)
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	0	(1)
Tax expense	0	0
Income/(loss) available to common shareholders	$ 0	$ (1)

EARNINGS _ (LOSS) PER SHARE - S

EARNINGS / (LOSS) PER SHARE - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings per share
Income/(loss) from continuing operations	$ 13,031	$ (12,072)
(Loss)/income from discontinued operations	0	(7,798)
Net income/(loss)	$ 13,031	$ (19,870)
Average number of common shares issued (in shares)	51,903	51,903
Less: average number of treasury shares (in shares)	948	1,744
Less: average number of unvested stock award shares (in shares)	625	488
Plus: average participating preferred shares (in shares)	0	533
Average number of basic common shares outstanding (in shares)	50,330	50,204
Average number of diluted common shares outstanding (in shares)	50,565	50,204
Basic earnings/(loss) per common share:
Continuing operations (in dollars per share)	$ 0.26	$ (0.24)
Discontinued operations (in dollars per share)	0	(0.16)
Total (in dollars per share)	0.26	(0.40)
Diluted earnings/(loss) per common share:
Continuing operations (in dollars per share)	0.26	(0.24)
Discontinued operations (in dollars per share)	0	(0.16)
Total (in dollars per share)	$ 0.26	$ (0.40)
Unvested stock award shares
Earnings per share
Plus: dilutive effect of share-based payment arrangements (in shares)	235	0
Stock options
Earnings per share
Plus: dilutive effect of share-based payment arrangements (in shares)	0	0

EARNINGS _ (LOSS) PER SHARE - N

EARNINGS / (LOSS) PER SHARE - Narrative (Details) shares in Thousands	3 Months Ended
	Mar. 31, 2021shares
Unvested stock award shares
Anti-dilutive securities
Securities excluded from the earnings per share calculations (in shares)	390

STOCK-BASED COMPENSATION PLAN_2

STOCK-BASED COMPENSATION PLANS - Summary of Activity (Details) - $ / shares shares in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Non-Vested Stock Awards Outstanding
Non-vested Stock Awards Outstanding, Number of Shares
Balance at the beginning of the period (in shares)	517
Granted (in shares)	210
Stock awards vested (in shares)	(44)
Forfeited (in shares)	(52)
Balance at the end of the period (in shares)	631
Non-vested Stock Awards Outstanding, Weighted-Average Grant Date Fair Value
Balance at the beginning of the period (in dollars per share)	$ 28.35
Granted (in dollars per share)	16.58
Stock awards vested (in dollars per share)	30.63
Forfeited (in dollars per share)	25.82
Balance at the end of the period (in dollars per share)	$ 20.09
Stock Options Outstanding
Non-vested Stock Awards Outstanding, Number of Shares
Stock awards vested (in shares)	(44)	(53)
Stock Options Outstanding, Number of Shares
Balance at the beginning of the period (in shares)	112
Granted (in shares)	0
Acquired (in shares)	0
Stock options exercised (in shares)	(5)
Forfeited (in shares)	0
Expired (in shares)	(10)
Balance at the end of the period (in shares)	97
Stock Options Outstanding, Weighted-Average Exercise Price
Balance at the beginning of the period (in dollars per share)	$ 22.95
Granted (in dollars per share)	0
Acquired (in dollars per share)	0
Stock options exercised (in dollars per share)	13.70
Forfeited (in dollars per share)	0
Expired (in dollars per share)	17.46
Balance at the end of the period (in dollars per share)	$ 24.85

STOCK-BASED COMPENSATION PLAN_3

STOCK-BASED COMPENSATION PLANS - Narrative (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of stock options	$ 69	$ 519
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of stock options	$ 69	$ 519
Stock awards vested (in shares)	44	53
Non-Vested Stock Awards Outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards vested (in shares)	44
Total compensation cost	$ 700	$ 1,500

FAIR VALUE MEASUREMENTS - Measu

FAIR VALUE MEASUREMENTS - Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	$ 1,627,330	$ 1,695,232
Marketable equity securities	15,801	18,513
Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	9,350	9,708
Securities available for sale	1,627,330	1,695,232
Marketable equity securities	15,801	18,513
Loans held for investment at fair value	7,778,261	8,243,437
Loans held for sale	18,377	17,748
Derivative assets	107,176	160,071
Derivative liabilities	47,215	65,758
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	15,129	17,841
Loans held for investment at fair value	0	0
Loans held for sale	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	0	0
Securities available for sale	1,627,330	1,680,232
Marketable equity securities	672	672
Loans held for investment at fair value	0	0
Loans held for sale	8,877	12,992
Derivative assets	106,665	159,016
Derivative liabilities	47,215	65,758
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	9,350	9,708
Securities available for sale	0	15,000
Marketable equity securities	0	0
Loans held for investment at fair value	7,778,261	8,243,437
Loans held for sale	9,500	4,756
Derivative assets	511	1,055
Derivative liabilities	0	0
Recurring | Total Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security	9,350	9,708
Loans held for sale	8,877	17,748
Derivative assets	107,176	160,071
Capitalized servicing rights	2,968	3,033
Derivative liabilities	47,215	65,758
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	90,300	97,803
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	724,554	756,826
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	447,196	438,132
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	268,515	288,650
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	45,014	60,030
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	51,751	53,791
Recurring | Total Fair Value | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable equity securities	15,801	18,513
Loans held for investment at fair value	1,448	2,265
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	0	0
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 | 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	15,129	17,841
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	8,877	12,992
Derivative assets	106,665	159,016
Capitalized servicing rights	0	0
Derivative liabilities	47,215	65,758
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	90,300	97,803
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	724,554	756,826
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	447,196	438,132
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	268,515	288,650
Recurring | Level 2 | Debt securities | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale	45,014	45,030
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	51,751	53,791
Recurring | Level 2 | Marketable equity securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable equity securities	672	672
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	9,350	9,708
Securities available for sale		15,000
Loans held for sale	0	4,756
Derivative assets	511	1,055
Capitalized servicing rights	2,968	3,033
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	0	15,000
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	$ 1,448	$ 2,265

FAIR VALUE MEASUREMENTS - Narra

FAIR VALUE MEASUREMENTS - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)security	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)	Jan. 01, 2020USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of trading securities in the portfolio | security	1
Retained earnings write-down	$ 226,516		$ 233,344
Continuing Operations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payments for origination of mortgage loans held-for-sale	44,000	$ 16,600
Proceeds from sale and collection of loans held-for-sale	46,900	21,100
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	$ (6)	(49)
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)
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 write-down				$ 11,200

FAIR VALUE MEASUREMENTS - Loans

FAIR VALUE MEASUREMENTS - Loans Held for Investment (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from discontinued operations	$ 303,697	$ 317,304
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets from discontinued operations		16,705
Loans Held for Investment | Continuing Operations | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loan held for investment	1,448	2,265
Assets from discontinued operations	44,969	53,945
Aggregate fair value less aggregate unpaid principal	$ (43,521)	$ (51,680)

FAIR VALUE MEASUREMENTS - Loa_2

FAIR VALUE MEASUREMENTS - Loans Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Loans Held for Sale
Aggregate Unpaid Principal	$ 303,697	$ 317,304
Level 2
Loans Held for Sale
Aggregate Fair Value	8,877	12,992
Aggregate Unpaid Principal		16,705
Recurring | Level 2
Loans Held for Sale
Aggregate Fair Value	8,877	12,992
Continuing Operations | Recurring | Loans Held for Sale | Level 2
Loans Held for Sale
Aggregate Fair Value	8,877	12,992
Aggregate Unpaid Principal	8,518	12,639
Aggregate fair value less aggregate unpaid principal	$ 359	$ 353

FAIR VALUE MEASUREMENTS - Chang

FAIR VALUE MEASUREMENTS - Changes in Level 3 (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Commitments to lend
Changes in Level 3 assets that were measured at fair value on a recurring basis
Unrealized (loss)/gain, net recognized in other non-interest income	$ 818	$ 0
Unrealized gains (losses) relating to instruments still held at the end of the period	185	4,836
Derivative Asset (Liability)
Beginning balance	735	2,628
Unrealized (loss)/gain, net recognized in other non-interest income	818	0
Transfers to held for sale loans	(1,368)	(8,831)
Ending balance	185	4,836
Forward Contracts
Changes in Level 3 assets that were measured at fair value on a recurring basis
Unrealized (loss)/gain, net recognized in other non-interest income	6
Unrealized gains (losses) relating to instruments still held at the end of the period	326
Derivative Asset (Liability)
Beginning balance	320
Unrealized (loss)/gain, net recognized in other non-interest income	6
Ending balance	326
Trading Security
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	9,708	10,769
Unrealized (loss)/gain, net recognized in other non-interest income	(166)	(759)
Paydown of asset	(192)	(181)
Balance at the end of the period	9,350	9,829
Unrealized gains (losses) relating to instruments still held at the end of the period		620
Derivative Asset (Liability)
Unrealized (loss)/gain, net recognized in other non-interest income	(166)	(759)
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	15,000	42,966
Maturities, calls, and prepayments of AFS Security	(15,000)	(9,000)
Unrealized gain (loss) included in accumulated other comprehensive income		(538)
Balance at the end of the period	0	34,504
Unrealized gains (losses) relating to instruments still held at the end of the period		151
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	3,033	12,299
Unrealized (loss)/gain, net recognized in other non-interest income	(65)	0
Additions to servicing rights		0
Balance at the end of the period	2,968	8,518
Unrealized gains (losses) relating to instruments still held at the end of the period		0
Derivative Asset (Liability)
Unrealized (loss)/gain, net recognized in other non-interest income	(65)	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	2,265	0
Unrealized (loss)/gain, net recognized in other non-interest income	414	(2,216)
Paydown of asset	(1,231)	(549)
Balance at the end of the period	1,448	4,895
Unrealized gains (losses) relating to instruments still held at the end of the period	0	0
Derivative Asset (Liability)
Unrealized (loss)/gain, net recognized in other non-interest income	414	(2,216)
Loans Held for Investment | Cumulative Effect, Period of Adoption, Adjustment
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period		7,660
Trading Assets, Excluding Debt and Equity Securities
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	$ 887
Discontinued Operations | Commitments to lend
Changes in Level 3 assets that were measured at fair value on a recurring basis
Unrealized gain/(loss), net recognized in discontinued operations		11,039
Derivative Asset (Liability)
Unrealized gain/(loss), net recognized in discontinued operations		11,039
Discontinued Operations | Trading Security
Changes in Level 3 assets that were measured at fair value on a recurring basis
Unrealized gain/(loss), net recognized in discontinued operations		0
Derivative Asset (Liability)
Unrealized gain/(loss), net recognized in discontinued operations		0
Discontinued Operations | Capitalized servicing rights
Changes in Level 3 assets that were measured at fair value on a recurring basis
Unrealized gain/(loss), net recognized in discontinued operations		(3,781)
Derivative Asset (Liability)
Unrealized gain/(loss), net recognized in discontinued operations		$ (3,781)

FAIR VALUE MEASUREMENTS - Unobs

FAIR VALUE MEASUREMENTS - Unobservable Inputs Recurring (Details) $ in Thousands	Mar. 31, 2021USD ($)uSDPerLoan	Dec. 31, 2020USD ($)uSDPerLoan
Quantitative information about the significant unobservable inputs within Level 3
Trading security	$ 9,350	$ 9,708
Securities available for sale, at fair value	1,627,330	1,695,232
Level 3
Quantitative information about the significant unobservable inputs within Level 3
Securities available for sale, at fair value	0	15,000
Level 3 | Recurring
Quantitative information about the significant unobservable inputs within Level 3
Trading security	9,350	9,708
Securities available for sale, at fair value		15,000
Loan held for investment	1,448	2,265
Total	$ 14,277	$ 31,061
Level 3 | Recurring | Discounted Cash Flow | Measurement Input, Discount Rate [Member]
Quantitative information about the significant unobservable inputs within Level 3
Trading security, significant unobservable input value	0.0266	0.0272
Loan held for investment, measurement input	0.2500	0.3000
Level 3 | Recurring | Forward commitments
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset	$ 326	$ 320
Level 3 | Recurring | Forward commitments | Historical Trend | Closing Ratio
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset, significant unobservable input value	0.7429	0.7454
Level 3 | Recurring | Forward commitments | Pricing Model | Origination Costs, per loan
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset, significant unobservable input value | uSDPerLoan	3,000	3
Level 3 | Recurring | Commitments to lend
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset	$ 185	$ 735
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	0.7429	0.7454
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 | uSDPerLoan	3,000	3,000
Level 3 | Recurring | Capitalized servicing rights
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights	$ 2,968	$ 3,033
Level 3 | Recurring | Capitalized servicing rights | Discounted Cash Flow | Measurement Input, Discount Rate [Member]
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1000	0.1000
Level 3 | Recurring | Capitalized servicing rights | Discounted Cash Flow | Measurement Input, Constant Prepayment Rate [Member]
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.2107	0.2652
Available-for-sale 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		0.010200
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	6,700,000	8,100,000
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	19,700,000	21,900,000

FAIR VALUE MEASUREMENTS - Mea_2

FAIR VALUE MEASUREMENTS - Measured on Non-recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned	$ 149	$ 149
Non-recurring | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated	21,762	28,028
Capitalized servicing rights	13,763	13,315
Other real estate owned	149	149
Total	$ 35,674	$ 41,492

FAIR VALUE MEASUREMENTS - Uno_2

FAIR VALUE MEASUREMENTS - Unobservable Inputs Non-recurring (Details) $ in Thousands	Mar. 31, 2021USD ($)security	Dec. 31, 2020USD ($)security
Quantitative information about the significant unobservable inputs within Level 3
Other Real Estate Owned	$ 149	$ 149
Non-recurring | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated	21,762	28,028
Capitalized servicing rights	13,763	13,315
Other Real Estate Owned	149	149
Total	35,674	41,492
Non-recurring | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated	$ 21,762	$ 28,028
Non-recurring | Minimum | Measurement Input, Loss Severity [Member] | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value	0.0032	0.0007
Non-recurring | Minimum | Measurement Input, Appraised Value [Member] | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value	0	0
Non-recurring | Maximum | Measurement Input, Loss Severity [Member] | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value	1	1
Non-recurring | Maximum | Measurement Input, Appraised Value [Member] | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value	11,842	11,432
Non-recurring | Weighted Average | Measurement Input, Loss Severity [Member] | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value	0.4939	0.4636
Non-recurring | Weighted Average | Measurement Input, Appraised Value [Member] | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Impaired loans, significant unobservable input value	7,827	9,800
Non-recurring | Capitalized servicing rights | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights	$ 13,763	$ 13,315
Non-recurring | Capitalized servicing rights | Minimum | Measurement Input, Constant Prepayment Rate [Member] | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1132	0.1449
Non-recurring | Capitalized servicing rights | Minimum | Measurement Input, Discount Rate [Member] | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.0833	0.1000
Non-recurring | Capitalized servicing rights | Maximum | Measurement Input, Constant Prepayment Rate [Member] | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1949	0.2329
Non-recurring | Capitalized servicing rights | Maximum | Measurement Input, Discount Rate [Member] | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1100	0.1100
Non-recurring | Capitalized servicing rights | Weighted Average | Measurement Input, Constant Prepayment Rate [Member] | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.1538	0.1698
Non-recurring | Capitalized servicing rights | Weighted Average | Measurement Input, Discount Rate [Member] | Discounted Cash Flow | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Servicing asset, significant unobservable input value	0.0912	0.1056
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	$ 149	$ 149
Other Real Estate Owned | Non-recurring | Minimum | Measurement Input, Appraised Value [Member] | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned, significant unobservable input value | security		94
Other Real Estate Owned | Non-recurring | Maximum | Measurement Input, Appraised Value [Member] | Fair Value of Collateral | Level 3
Quantitative information about the significant unobservable inputs within Level 3
Other real estate owned, significant unobservable input value | security	182	182

FAIR VALUE MEASUREMENTS - Fair

FAIR VALUE MEASUREMENTS - Fair Values and Carrying Amounts (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial Assets
Marketable equity securities	$ 15,801	$ 18,513
Securities available for sale	1,627,330	1,695,232
Securities held to maturity	627,297	491,855
FHLB bank stock and restricted securities	28,680	34,873
Assets from discontinued operations	303,697	317,304
Financial Liabilities
Liabilities held for sale	659,310	630,065
Level 1
Financial Assets
Cash and cash equivalents	1,899,608	1,557,875
Trading security	0	0
Marketable equity securities	15,129	17,841
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
Assets from discontinued operations		0
Financial Liabilities
Total deposits	0	0
Short-term debt	0	0
Long-term Federal Home Loan Bank advances and other	0	0
Subordinated borrowings	0	0
Derivative liabilities	0	0
Liabilities held for sale		0
Level 2
Financial Assets
Cash and cash equivalents	0	0
Trading security	0	0
Marketable equity securities	672	672
Securities available for sale	1,627,330	1,680,232
Securities held to maturity	624,012	488,393
Net loans	0	0
Loans held for sale	8,877	12,992
Accrued interest receivable	45,990	46,919
Derivative assets	106,665	159,016
Assets from discontinued operations		16,705
Financial Liabilities
Total deposits	10,256,878	10,230,822
Short-term debt	0	40,025
Long-term Federal Home Loan Bank advances and other	353,481	438,064
Subordinated borrowings	95,729	95,178
Derivative liabilities	47,215	65,758
Liabilities held for sale		631,268
Level 3
Financial Assets
Cash and cash equivalents	0	0
Trading security	9,350	9,708
Marketable equity securities	0	0
Securities available for sale	0	15,000
Securities held to maturity	3,285	3,462
Net loans	7,778,261	8,243,437
Loans held for sale	9,500	4,756
Accrued interest receivable	0	0
Derivative assets	511	1,055
Assets from discontinued operations		300,599
Financial Liabilities
Total deposits	0	0
Short-term debt	0	0
Long-term Federal Home Loan Bank advances and other	0	0
Subordinated borrowings	0	0
Derivative liabilities	0	0
Liabilities held for sale		0
Carrying Amount
Financial Assets
Cash and cash equivalents	1,899,608	1,557,875
Trading security	9,350	9,708
Marketable equity securities	15,801	18,513
Securities available for sale	1,627,330	1,695,232
Securities held to maturity	610,637	465,091
FHLB bank stock and restricted securities	28,680	34,873
Net loans	7,534,978	7,954,217
Loans held for sale	18,377	17,748
Accrued interest receivable	45,990	46,919
Derivative assets	107,176	160,071
Assets from discontinued operations		317,304
Financial Liabilities
Total deposits	10,244,370	10,215,808
Short-term debt	0	40,000
Long-term Federal Home Loan Bank advances and other	351,354	434,357
Subordinated borrowings	97,338	97,280
Derivative liabilities	47,215	65,758
Liabilities held for sale		630,065
Fair Value
Financial Assets
Cash and cash equivalents	1,899,608	1,557,875
Trading security	9,350	9,708
Marketable equity securities	15,801	18,513
Securities available for sale	1,627,330	1,695,232
Securities held to maturity	627,297	491,855
Net loans	7,778,261	8,243,437
Loans held for sale	18,377	17,748
Accrued interest receivable	45,990	46,919
Derivative assets	107,176	160,071
Assets from discontinued operations		317,304
Financial Liabilities
Total deposits	10,256,878	10,230,822
Short-term debt	0	40,025
Long-term Federal Home Loan Bank advances and other	353,481	438,064
Subordinated borrowings	95,729	95,178
Derivative liabilities	$ 47,215	65,758
Liabilities held for sale		$ 631,268

NET INTEREST INCOME AFTER PRO_3

NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Banking and Thrift, Interest [Abstract]
Net interest income from continuing operations	$ 75,093	$ 86,428
Provision for credit losses	6,500	34,807
Net interest income from continuing operations after provision for credit losses	$ 68,593	$ 51,621

Uncategorized Items - bhlb-2021

Label	Element	Value
Accounting Standards Update [Extensible List]	us-gaap_AccountingStandardsUpdateExtensibleList	Accounting Standards Update 2016-13 [Member]