Berkshire Hills Bancorp (BHLB) 10-Q 9 Nov 23 2023 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2023	Nov. 07, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	001-15781
Entity Registrant Name	BERKSHIRE HILLS BANCORP, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	04-3510455
Entity Address, Address Line One	60 State Street
Entity Address, City or Town	Boston
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	02109
City Area Code	800
Local Phone Number	773-5601
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	BHLB
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		43,670,239
Entity Central Index Key	0001108134
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Assets
Cash and due from banks	$ 120,634	$ 145,342
Short-term investments	542,836	540,013
Total cash and cash equivalents	663,470	685,355
Trading securities, at fair value	6,171	6,708
Equity securities, at fair value	12,325	12,856
Securities available for sale, at fair value	1,260,391	1,423,200
Securities held to maturity (fair values of $453,729 and $507,464)	552,981	583,453
Federal Home Loan Bank stock	38,912	7,219
Total securities	1,870,780	2,033,436
Less: Allowance for credit losses on held to maturity securities	(69)	(91)
Net securities	1,870,711	2,033,345
Loans held for sale	2,342	4,311
Total loans	8,984,377	8,335,309
Less: Allowance for credit losses on loans	(102,792)	(96,270)
Net loans	8,881,585	8,239,039
Premises and equipment, net	70,042	85,217
Other intangible assets	20,869	24,483
Cash surrender value of bank-owned life insurance policies	242,172	238,919
Other assets	377,605	348,935
Total assets	12,139,953	11,662,864
Liabilities
Demand deposits	2,530,441	2,852,127
NOW and other deposits	843,032	1,054,596
Money market deposits	3,075,307	3,723,570
Savings deposits	1,086,329	1,063,269
Time deposits	2,445,435	1,633,707
Total deposits	9,980,544	10,327,269
Short-term debt	670,000	0
Long-term Federal Home Loan Bank advances and other	134,295	4,445
Subordinated borrowings	121,300	121,064
Total borrowings	925,595	125,509
Other liabilities	282,805	256,024
Total liabilities	11,188,944	10,708,802
Shareholders’ equity
Common stock ($0.01 par value; 100,000,000 shares authorized and 51,903,190 shares issued and 43,822,473 shares outstanding in 2023; 51,903,190 shares issued and 44,361,222 shares outstanding in 2022)	528	528
Additional paid-in capital - common stock	1,423,720	1,424,183
Unearned compensation	(12,004)	(8,598)
Retained (deficit)	(23,846)	(71,428)
Accumulated other comprehensive (loss)	(218,386)	(181,052)
Treasury stock, at cost (8,080,717 shares in 2023 and 7,541,968 shares in 2022)	(219,003)	(209,571)
Total shareholders’ equity	951,009	954,062
Total liabilities and shareholders’ equity	12,139,953	11,662,864
Disposal Group, Held-for-sale, Not Discontinued Operations
Assets
Assets held for sale	$ 11,157	$ 3,260

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Securities held to maturity fair value	$ 453,729	$ 507,464
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)	43,822,473	44,361,222
Treasury stock, shares (in shares)	8,080,717	7,541,968

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest and dividend income
Loans	$ 132,816	$ 90,266	$ 377,180	$ 227,583
Securities and other	15,205	13,405	48,582	38,290
Total interest and dividend income	148,021	103,671	425,762	265,873
Interest expense
Deposits	44,008	8,164	106,056	16,508
Borrowings	13,679	3,423	39,080	6,860
Total interest expense	57,687	11,587	145,136	23,368
Net interest income	90,334	92,084	280,626	242,505
Non-interest income
Total fee income	16,700	14,573	49,966	48,345
Other, net	1,232	2,154	1,454	7,132
Fair value adjustments on securities	(467)	(476)	(255)	(2,194)
Total non-interest income	17,465	16,251	51,165	53,283
Total net revenue	107,799	108,335	331,791	295,788
Provision expense/(benefit) for credit losses	8,000	3,000	24,999	(1,000)
Non-interest expense
Compensation and benefits	40,155	39,422	119,186	114,773
Occupancy and equipment	8,816	8,702	27,165	28,207
Technology and communications	10,616	8,719	30,552	25,857
Marketing and promotion	1,552	1,290	4,270	3,873
Professional services	2,423	3,285	8,226	8,890
FDIC premiums and assessments	1,905	476	5,165	2,121
Other real estate owned and foreclosures	0	13	0	36
Amortization of intangible assets	1,205	1,285	3,615	3,857
Restructuring and other expenses	2,607	11,473	2,592	11,526
Other	7,234	7,012	21,745	19,562
Total non-interest expense	76,513	81,677	222,516	218,702
Income before income taxes	23,286	23,658	84,276	78,086
Income tax expense	3,741	4,941	13,233	16,058
Net income	$ 19,545	$ 18,717	$ 71,043	$ 62,028
Basic earnings per common share (in dollars per share)	$ 0.45	$ 0.42	$ 1.64	$ 1.35
Diluted earnings per common share (in dollars per share)	$ 0.45	$ 0.42	$ 1.63	$ 1.34
Weighted average shares outstanding:
Basic (in shares)	43,164	44,700	43,435	46,056
Diluted (in shares)	43,347	45,034	43,640	46,396
Deposit related fees
Non-interest income
Total fee income	$ 8,792	$ 8,377	$ 25,674	$ 23,733
Loan fees and other
Non-interest income
Total fee income	2,879	1,292	8,537	7,344
Gain on SBA loan sales
Non-interest income
Total fee income	2,548	2,551	7,952	9,515
Wealth management fees
Non-interest income
Total fee income	$ 2,481	$ 2,353	$ 7,803	$ 7,753

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE (LOSS)/INCOME - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 19,545	$ 18,717	$ 71,043	$ 62,028
Other comprehensive (loss), before tax:
Changes in unrealized (loss) on debt securities available-for-sale	(40,525)	(83,073)	(41,398)	(244,933)
Changes in unrealized (loss) on derivative hedges	(2,959)	(5,555)	(9,072)	(5,555)
Income taxes related to other comprehensive (loss):
Changes in unrealized (loss) on debt securities available-for-sale	10,544	21,639	10,701	63,743
Changes in unrealized (loss) on derivative hedges	794	1,494	2,435	1,494
Total other comprehensive (loss)	(32,146)	(65,495)	(37,334)	(185,251)
Total comprehensive (loss)/income	$ (12,601)	$ (46,778)	$ 33,709	$ (123,223)

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Impact of ASU No. 2022-02 Adoption	Common stock	Additional paid-in capital	Unearned compensation	Retained earnings (deficit)	Retained earnings (deficit) Impact of ASU No. 2022-02 Adoption	Accumulated other comprehensive (loss)	Treasury stock
Balance at beginning of period (in shares) at Dec. 31, 2021			48,667,000
Balance at Beginning of Period at Dec. 31, 2021	$ 1,182,435	$ 0	$ 528	$ 1,423,445	$ (9,056)	$ (139,383)		$ (3,243)	$ (89,856)
Comprehensive income (loss)
Net income	62,028					62,028
Other comprehensive (loss)	(185,251)							(185,251)
Total comprehensive (loss)/income	(123,223)					62,028		(185,251)
Cash dividends declared on common shares	(16,414)					(16,414)
Treasury shares repurchased (in shares)			(3,825,000)
Treasury shares repurchased	(104,543)								(104,543)
Forfeited shares (in shares)			(75,000)
Forfeited shares	0			169	1,911				(2,080)
Exercise of stock options (in shares)			12,000
Exercise of stock options	269					(51)			320
Restricted stock grants (in shares)			321,000
Restricted stock grants	0			536	(9,240)				8,704
Stock-based compensation	5,659				5,659
Other, net (in shares)			(60,000)
Other, net	(1,621)			8					(1,629)
Balance at end of period (in shares) at Sep. 30, 2022			45,040,000
Balance at End of Period at Sep. 30, 2022	942,562		$ 528	1,424,158	(10,726)	(93,820)		(188,494)	(189,084)
Balance at beginning of period (in shares) at Dec. 31, 2021			48,667,000
Balance at Beginning of Period at Dec. 31, 2021	$ 1,182,435	0	$ 528	1,423,445	(9,056)	(139,383)		(3,243)	(89,856)
Balance at end of period (in shares) at Dec. 31, 2022	44,361,222		44,361,000
Balance at End of Period at Dec. 31, 2022	$ 954,062	401	$ 528	1,424,183	(8,598)	(71,428)	$ 401	(181,052)	(209,571)
Comprehensive income (loss)
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2022-02 [Member]
Balance at beginning of period (in shares) at Jun. 30, 2022			45,788,000
Balance at Beginning of Period at Jun. 30, 2022	$ 1,014,050		$ 528	1,424,081	(12,824)	(106,997)		(122,999)	(167,739)
Comprehensive income (loss)
Net income	18,717					18,717
Other comprehensive (loss)	(65,495)							(65,495)
Total comprehensive (loss)/income	(46,778)					18,717		(65,495)
Cash dividends declared on common shares	(5,493)					(5,493)
Treasury shares repurchased (in shares)			(705,000)
Treasury shares repurchased	(20,249)								(20,249)
Forfeited shares (in shares)			(23,000)
Forfeited shares	0			90	553				(643)
Exercise of stock options (in shares)			11,000
Exercise of stock options	245					(47)			292
Restricted stock grants (in shares)			7,000
Restricted stock grants	0			(17)	(188)				205
Stock-based compensation	1,733				1,733
Other, net (in shares)			(38,000)
Other, net	(946)			4					(950)
Balance at end of period (in shares) at Sep. 30, 2022			45,040,000
Balance at End of Period at Sep. 30, 2022	$ 942,562		$ 528	1,424,158	(10,726)	(93,820)		(188,494)	(189,084)
Balance at beginning of period (in shares) at Dec. 31, 2022	44,361,222		44,361,000
Balance at Beginning of Period at Dec. 31, 2022	$ 954,062	$ 401	$ 528	1,424,183	(8,598)	(71,428)	$ 401	(181,052)	(209,571)
Comprehensive income (loss)
Net income	71,043					71,043
Other comprehensive (loss)	(37,334)							(37,334)
Total comprehensive (loss)/income	33,709					71,043		(37,334)
Cash dividends declared on common shares	(23,862)					(23,862)
Treasury shares repurchased (in shares)			(807,000)
Treasury shares repurchased	(17,146)								(17,146)
Forfeited shares (in shares)			(72,000)
Forfeited shares	(1)			(45)	1,833				(1,789)
Exercise of stock options	0
Restricted stock grants (in shares)			400,000
Restricted stock grants	0			(262)	(10,760)				11,022
Stock-based compensation	5,521				5,521
Other, net (in shares)			(60,000)
Other, net	$ (1,675)			(156)					(1,519)
Balance at end of period (in shares) at Sep. 30, 2023	43,822,473		43,822,000
Balance at End of Period at Sep. 30, 2023	$ 951,009		$ 528	1,423,720	(12,004)	(23,846)		(218,386)	(219,003)
Balance at beginning of period (in shares) at Jun. 30, 2023			44,033,000
Balance at Beginning of Period at Jun. 30, 2023	973,381		$ 528	1,423,856	(14,470)	(35,490)		(186,240)	(214,803)
Comprehensive income (loss)
Net income	19,545					19,545
Other comprehensive (loss)	(32,146)							(32,146)
Total comprehensive (loss)/income	(12,601)					19,545		(32,146)
Cash dividends declared on common shares	(7,901)					(7,901)
Treasury shares repurchased (in shares)			(179,000)
Treasury shares repurchased	(3,578)								(3,578)
Forfeited shares (in shares)			(23,000)
Forfeited shares	0			(82)	572				(490)
Exercise of stock options	0
Restricted stock grants (in shares)			8,000
Restricted stock grants	0			(54)	(172)				226
Stock-based compensation	2,066				2,066
Other, net (in shares)			(17,000)
Other, net	$ (358)								(358)
Balance at end of period (in shares) at Sep. 30, 2023	43,822,473		43,822,000
Balance at End of Period at Sep. 30, 2023	$ 951,009		$ 528	$ 1,423,720	$ (12,004)	$ (23,846)		$ (218,386)	$ (219,003)

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Stockholders' Equity [Abstract]
Cash dividends, declared on common stock (in dollars per share)	$ 0.18	$ 0.12	$ 0.54	$ 0.36

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net income	$ 71,043,000	$ 62,028,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision/(benefit) for credit losses	24,999,000	(1,000,000)
Net (accretion)/amortization of securities	965,000	2,288,000
Change in unamortized net loan costs and premiums	145,000	2,557,000
Premises and equipment depreciation and amortization expense	6,404,000	7,257,000
Stock-based compensation expense	5,521,000	5,659,000
Accretion of purchase accounting entries, net	(503,000)	(1,467,000)
Amortization of other intangibles	3,615,000	3,857,000
Income from cash surrender value of bank-owned life insurance policies	(3,910,000)	(4,139,000)
(Gain) on SBA loan sales	(7,952,000)	(9,515,000)
Fair value adjustments on securities	255,000	2,194,000
Net change in loans held-for-sale	1,969,000	4,954,000
Amortization of interest in tax-advantaged projects	5,959,000	1,153,000
Net change in other	(3,804,000)	12,401,000
Net cash provided by operating activities	104,706,000	88,227,000
Cash flows from investing activities:
Net decrease in trading security	641,000	609,000
Purchases of securities available for sale	(44,586,000)	(428,068,000)
Proceeds from sales of securities available for sale	0	149,994,000
Proceeds from maturities, calls, and prepayments of securities available for sale	166,552,000	440,025,000
Purchases of securities held to maturity	(700,000)	(807,000)
Proceeds from maturities, calls, and prepayments of securities held to maturity	29,852,000	43,384,000
Net change in loans	(658,823,000)	(1,130,744,000)
Proceeds from surrender of bank-owned life insurance	657,000	1,777,000
Purchase of Federal Home Loan Bank stock	(449,336,000)	(66,486,000)
Proceeds from redemption of Federal Home Loan Bank stock	417,643,000	70,022,000
Net investment in limited partnership tax credits	0	(1,443,000)
Purchase of premises and equipment, net	(753,000)	(730,000)
Net cash (used) by investing activities	(538,853,000)	(922,467,000)
Cash flows from financing activities:
Net (decrease)/increase in deposits	(346,725,000)	(80,832,000)
Proceeds from Federal Home Loan Bank advances and other borrowings	10,010,000,000	51,275,000
Repayments of Federal Home Loan Bank advances and other borrowings	(9,210,150,000)	(60,146,000)
Proceeds from issuance of subordinated debt	0	98,032,000
Purchase of treasury stock	(17,146,000)	(104,543,000)
Exercise of stock options	0	269,000
Common stock cash dividends paid	(23,862,000)	(16,414,000)
Settlement of derivative contracts with financial institution counterparties	145,000	88,705,000
Net cash provided by financing activities	412,262,000	(98,654,000)
Net change in cash and cash equivalents	(21,885,000)	(932,894,000)
Cash and cash equivalents at beginning of period	685,355,000	1,627,807,000
Cash and cash equivalents at end of period	663,470,000	694,913,000
Supplemental cash flow information:
Interest paid on deposits	98,428,000	16,290,000
Interest paid on borrowed funds	36,165,000	7,016,000
Income taxes paid, net	7,743,000	15,241,000
Other non-cash changes:
Other net comprehensive income	(37,334,000)	(185,251,000)
Impact to retained earnings from adoption of ASU 2022-02	951,009,000	942,562,000
Properties transferred to held for sale	8,714,000	3,574,000
Reclassification of held-for-sale loans to held-for-investment, net	$ 0	$ 606,000

BASIS OF PRESENTATION

BASIS OF PRESENTATION	9 Months Ended
	Sep. 30, 2023
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. 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, 2022. In management’s opinion, all adjustments necessary for a fair statement are reflected in the interim periods. Reclassifications Certain items in prior financial statements have been reclassified to conform to the current presentation. 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 Effective January 1, 2023, the Company adopted ASU No. 2022-02, “Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures.” The adoption did not have a material impact on the Company’s Consolidated Financial Statements. The ASU eliminates the troubled debt restructuring (“TDR”) accounting model that was adopted with Topic 326, “Financial Instruments – Credit Losses” and enhances disclosure requirements for certain loan refinancings and restructurings when a borrower is experiencing financial difficulty. The ASU requires prospective disclosure of current-period gross write-offs by year of origination. Refer to Note 4 – Loans and Allowance for Credit Losses for the new financial statement disclosures applicable under this update. Future Application of Accounting Pronouncements In March 2023, the FASB issued ASU No. 2023-02, “Investments – Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (a consensus of the Emerging Issues Task Force).” The guidance is intended to improve the accounting and disclosures for investments in tax credit structures. The ASU allows entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. Previously, this method was only available for qualifying investments in low-income housing tax credit structures. The amendments in this ASU are effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. Early adoption is permitted. The Company is still evaluating; however, the adoption is not expected to have a material impact on the Company’s Consolidated Financial Statements.

TRADING SECURITIES

TRADING SECURITIES	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
TRADING SECURITIES	TRADING SECURITIESThe Company holds a tax-advantaged economic development bond accounted for at fair value. The security had an amortized cost of $6.4 million and $7.1 million, and a fair value of $6.2 million and $6.7 million, at September 30, 2023 and December 31, 2022, respectively. As discussed further in Note 7 - 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 September 30, 2023 or December 31, 2022.

SECURITIES AVAILABLE FOR SALE,

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND EQUITY SECURITIES	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND EQUITY SECURITIES	SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND 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 September 30, 2023 Securities available for sale U.S Treasuries $ 7,873 $ — $ — $ 7,873 Municipal bonds and obligations 65,397 — (6,703) 58,694 — Agency collateralized mortgage obligations 570,205 — (109,849) 460,356 — Agency mortgage-backed securities 595,518 — (112,317) 483,201 — Agency commercial mortgage-backed securities 255,891 — (44,520) 211,371 — Corporate bonds 43,312 59 (5,131) 38,240 — Other bonds and obligations 655 67 (66) 656 — Total securities available for sale 1,538,851 126 (278,586) 1,260,391 — Securities held to maturity Municipal bonds and obligations 255,888 33 (36,047) 219,874 48 Agency collateralized mortgage obligations 116,267 — (22,592) 93,675 — Agency mortgage-backed securities 48,196 — (10,839) 37,357 — Agency commercial mortgage-backed securities 130,705 — (29,721) 100,984 — Tax advantaged economic development bonds 1,637 6 (92) 1,551 21 Other bonds and obligations 288 — — 288 — Total securities held to maturity 552,981 39 (99,291) 453,729 69 Equity securities 15,035 — (2,710) 12,325 — Total $ 2,106,867 $ 165 $ (380,587) $ 1,726,445 $ 69 (In thousands) Amortized Cost Gross Gross Fair Value Allowance December 31, 2022 Securities available for sale U.S Treasuries $ 11,972 $ 1 $ — $ 11,973 $ — Municipal bonds and obligations 65,943 422 (3,030) 63,335 — Agency collateralized mortgage obligations 631,732 — (99,787) 531,945 — Agency mortgage-backed securities 643,308 1 (96,996) 546,313 — Agency commercial mortgage-backed securities 264,218 — (35,750) 228,468 — Corporate bonds 43,368 80 (2,938) 40,510 — Other bonds and obligations 655 67 (66) 656 — Total securities available for sale 1,661,196 571 (238,567) 1,423,200 — Securities held to maturity Municipal bonds and obligations 266,793 691 (23,704) 243,780 66 Agency collateralized mortgage obligations 128,136 — (20,420) 107,716 — Agency mortgage-backed securities 50,958 — (9,240) 41,718 — Agency commercial mortgage-backed securities 135,206 — (23,203) 112,003 — Tax advantaged economic development bonds 2,069 8 (121) 1,956 25 Other bonds and obligations 291 — — 291 — Total securities held to maturity 583,453 699 (76,688) 507,464 91 Equity securities 15,035 — (2,179) 12,856 — Total $ 2,259,684 $ 1,270 $ (317,434) $ 1,943,520 $ 91 The following table summarizes the activity in the allowance for credit losses for debt securities held to maturity by security type for the three and nine months ended September 30, 2023 and 2022: (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at June, 2023 $ 49 $ 22 $ 71 (Benefit)/provision for credit losses (1) (1) (2) Balance at September 30, 2023 $ 48 $ 21 $ 69 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at June 30, 2022 $ 66 $ 28 $ 94 (Benefit)/provision for credit losses 1 — 1 Balance at September 30, 2022 $ 67 $ 28 $ 95 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2022 $ 66 $ 25 $ 91 (Benefit)/provision for credit losses (18) (4) (22) Balance at September 30, 2023 $ 48 $ 21 $ 69 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2021 $ 70 $ 35 $ 105 (Benefit)/provision for credit losses (3) (7) (10) Balance at September 30, 2022 $ 67 $ 28 $ 95 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 September 30, 2023, 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 September 30, 2023 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 $ 8,693 $ 8,692 $ 822 $ 822 Over 1 year to 5 years 11,291 11,068 1,683 1,667 Over 5 years to 10 years 54,720 48,694 36,012 34,653 Over 10 years 42,533 37,009 219,296 184,571 Total bonds and obligations 117,237 105,463 257,813 221,713 Mortgage-backed securities 1,421,614 1,154,928 295,168 232,016 Total $ 1,538,851 $ 1,260,391 $ 552,981 $ 453,729 During the three and nine months ended September 30, 2023, purchases of AFS securities totaled $7.8 million and $44.6 million, respectively. During the three and nine months ended September 30, 2023, there were no sales of AFS securities. During the three and nine months ended September 30, 2022, purchases of AFS securities totaled $41.4 million and $428.1 million, respectively. During the three months ended September 30, 2022, there were no sales of AFS securities. During the nine months ended September 30, 2022, proceeds from sales of AFS securities totaled $150 million. During the three months ended September 30, 2022, there were no gross gains or gross losses. During the nine months ended September 30, 2022, gross gains totaled $6 thousand and there were no gross losses. Securities available for sale and held to maturity with unrealized losses, segregated by the duration of their continuous unrealized loss positions, are summarized as follows: Less Than Twelve Months Over Twelve Months Total Gross Gross Gross Unrealized Fair Unrealized Fair Unrealized Fair (In thousands) Losses Value Losses Value Losses Value September 30, 2023 Securities available for sale Municipal bonds and obligations $ 2,779 $ 37,869 $ 3,924 $ 20,200 $ 6,703 $ 58,069 Agency collateralized mortgage obligations — — 109,849 460,356 109,849 460,356 Agency mortgage-backed securities 6 285 112,311 482,909 112,317 483,194 Agency commercial mortgage-backed securities — — 44,520 211,362 44,520 211,362 Corporate bonds 441 7,809 4,690 29,523 5,131 37,332 Other bonds and obligations — — 66 295 66 295 Total securities available for sale $ 3,226 $ 45,963 $ 275,360 $ 1,204,645 $ 278,586 $ 1,250,608 Securities held to maturity Municipal bonds and obligations $ 7,986 $ 128,129 $ 28,061 $ 80,778 $ 36,047 $ 208,907 Agency collateralized mortgage obligations 1 21 22,591 93,654 22,592 93,675 Agency mortgage-backed securities — — 10,839 37,357 10,839 37,357 Agency commercial mortgage-backed securities — — 29,721 100,984 29,721 100,984 Tax advantaged economic development bonds — — 92 927 92 927 Total securities held to maturity 7,987 128,150 91,304 313,700 99,291 441,850 Total $ 11,213 $ 174,113 $ 366,664 $ 1,518,345 $ 377,877 $ 1,692,458 December 31, 2022 Securities available for sale Municipal bonds and obligations $ 2,406 $ 36,696 $ 624 $ 2,763 $ 3,030 $ 39,459 Agency collateralized mortgage obligations 23,052 247,509 76,735 284,434 99,787 531,943 Agency mortgage-backed securities 3,124 37,540 93,872 508,683 96,996 546,223 Agency commercial mortgage-backed securities 9,885 96,396 25,865 132,043 35,750 228,439 Corporate bonds 1,709 25,657 1,229 9,929 2,938 35,586 Other bonds and obligations — — 66 295 66 295 Total securities available for sale $ 40,176 $ 443,798 $ 198,391 $ 938,147 $ 238,567 $ 1,381,945 Securities held to maturity Municipal bonds and obligations $ 5,476 $ 125,494 $ 18,228 $ 38,341 $ 23,704 $ 163,835 Agency collateralized mortgage obligations 2,734 49,539 17,686 58,177 20,420 107,716 Agency mortgage-backed securities 300 2,419 8,940 39,299 9,240 41,718 Agency commercial mortgage-backed securities 447 9,713 22,756 102,290 23,203 112,003 Tax advantaged economic development bonds 1 142 120 1,008 121 1,150 Total securities held to maturity 8,958 187,307 67,730 239,115 76,688 426,422 Total $ 49,134 $ 631,105 $ 266,121 $ 1,177,262 $ 315,255 $ 1,808,367 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 September 30, 2023, 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 September 30, 2023: AFS municipal bonds and obligations At September 30, 2023, 90 of the 93 securities in the Company’s portfolio of AFS municipal bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 10.4% of the amortized cost of securities in unrealized loss positions. The Company continually monitors the municipal bond sector of the market carefully and periodically evaluates the appropriate level of exposure to the market. At this time, the Company feels the bonds in this portfolio carry minimal risk of default and the Company is appropriately compensated for that risk. There were no material underlying credit downgrades during the quarter. All securities are performing. AFS collateralized mortgage obligations At September 30, 2023, 238 of the 240 securities in the Company’s portfolio of AFS collateralized mortgage obligations were in unrealized loss positions. Aggregate unrealized losses represented 19.3% 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 September 30, 2023, 135 of the 136 securities in the Company’s portfolio of AFS mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 18.4% 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 September 30, 2023, 14 of the 15 securities in the Company’s portfolio of AFS corporate bonds were in unrealized loss positions. Aggregate unrealized losses represents 12.1% of the amortized cost of the bonds in unrealized loss positions. The Company reviews the financial strength of all of these bonds and has concluded that the amortized cost remains supported by the expected future cash flows of these securities. All securities are performing. AFS other bonds and obligations At September 30, 2023, 2 of the 3 securities in the Company’s portfolio of AFS other bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represents 18.3% of the amortized cost of the bonds in unrealized loss positions. The Company reviews the financial strength of all of these bonds and has concluded that the amortized cost remains supported by the expected future cash flows of these securities. All securities are performing. HTM municipal bonds and obligations At September 30, 2023, 159 of the 178 securities in the Company’s portfolio of HTM municipal bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 14.7% 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 September 30, 2023, 12 of the 12 securities in the Company’s portfolio of HTM collateralized mortgage obligations were in unrealized loss positions. Aggregate unrealized losses represented 19.4% 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 September 30, 2023, 17 of the 17 securities in the Company’s portfolio of HTM mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 22.7% 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. HTM tax-advantaged economic development bonds At September 30, 2023, 1 of the 2 securities in the Company’s portfolio of tax-advantaged economic development bonds was in unrealized loss positions. Aggregate unrealized losses represented 9.1% of the amortized cost of the security in unrealized loss positions. The Company believes that more likely than not all the principal outstanding will be collected. All securities are performing.

LOANS AND ALLOWANCE FOR CREDIT

LOANS AND ALLOWANCE FOR CREDIT LOSSES	9 Months Ended
	Sep. 30, 2023
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) September 30, 2023 December 31, 2022 Construction $ 561,691 $ 319,452 Commercial multifamily 602,120 620,088 Commercial real estate owner occupied 658,189 640,489 Commercial real estate non-owner occupied 2,605,823 2,496,237 Commercial and industrial 1,363,771 1,445,236 Residential real estate 2,729,411 2,312,447 Home equity 227,052 227,450 Consumer other 236,320 273,910 Total loans $ 8,984,377 $ 8,335,309 Allowance for credit losses (102,792) (96,270) Net loans $ 8,881,585 $ 8,239,039 During the three and nine months ended September 30, 2023, there were no loans reclassified to held for sale. Transferred held for sale loans are not contained in the balances within this note and are accounted for at the lower of carrying value or fair market value within loans held for sale on the Consolidated Balance Sheet. 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 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) and is included in other liabilities on the consolidated balance sheet. The Company’s activity in the allowance for credit losses for loans for the three and nine months ended September 30, 2023 and September 30, 2022 was as follows: (In thousands) Balance at Beginning of Period Adoption of ASU No. 2022-02 Charge-offs Recoveries Provision/(Benefit) for Credit Losses Balance at End of Period Three months ended September 30, 2023 Construction $ 1,553 $ — $ — $ — $ 1,949 $ 3,502 Commercial multifamily 2,066 — — — 339 2,405 Commercial real estate owner occupied 10,343 — (25) 116 (979) 9,455 Commercial real estate non-owner occupied 36,322 — (1) 20 (3,059) 33,282 Commercial and industrial 18,741 — (3,997) 617 3,158 18,519 Residential real estate 18,218 — (72) 92 1,766 20,004 Home equity 2,572 — (71) 278 (677) 2,102 Consumer other 10,404 — (2,578) 192 5,505 13,523 Total allowance for credit losses $ 100,219 $ — $ (6,744) $ 1,315 $ 8,002 $ 102,792 (In thousands) Balance at Beginning of Period Charge-offs Recoveries Provision/(Benefit) for Credit Losses Balance at End of Period Three months ended September 30, 2022 Construction $ 1,710 $ — $ — $ (479) $ 1,231 Commercial multifamily 4,621 (94) 112 (2,919) 1,720 Commercial real estate owner occupied 10,687 (176) 256 (582) 10,185 Commercial real estate non-owner occupied 26,166 (1,012) 153 4,114 29,421 Commercial and industrial 22,914 (5,545) 616 650 18,635 Residential real estate 16,411 (102) 131 3,398 19,838 Home equity 2,828 (9) 9 (407) 2,421 13,684 (486) 140 (776) 12,562 Total allowance for credit losses $ 99,021 $ (7,424) $ 1,417 $ 2,999 $ 96,013 (In thousands) Balance at Beginning of Period Adoption of ASU No. 2022-02 Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Nine months ended September 30, 2023 Construction $ 1,227 $ — $ (1) $ — $ 2,276 $ 3,502 Commercial multifamily 1,810 — — 6 589 2,405 Commercial real estate owner occupied 10,739 24 (489) 758 (1,577) 9,455 Commercial real estate non-owner occupied 30,724 — (1) 195 2,364 33,282 Commercial and industrial 18,743 (23) (14,625) 1,736 12,688 18,519 Residential real estate 18,666 2 (313) 555 1,094 20,004 Home equity 2,173 — (88) 437 (420) 2,102 Consumer other 12,188 (404) (6,848) 580 8,007 13,523 Total allowance for credit losses $ 96,270 $ (401) $ (22,365) $ 4,267 $ 25,021 $ 102,792 (In thousands) Balance at Beginning of Period Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Nine months ended September 30, 2022 Construction $ 3,206 $ — $ — $ (1,975) $ 1,231 Commercial multifamily 6,120 (94) 112 (4,418) 1,720 Commercial real estate owner occupied 12,752 (603) 562 (2,526) 10,185 Commercial real estate non-owner occupied 32,106 (5,895) 1,464 1,746 29,421 Commercial and industrial 22,584 (6,951) 2,485 517 18,635 Residential real estate 22,406 (480) 719 (2,807) 19,838 Home equity 4,006 (9) 255 (1,831) 2,421 Consumer other 2,914 (1,031) 375 10,304 12,562 Total allowance for credit losses $ 106,094 $ (15,063) $ 5,972 $ (990) $ 96,013 The Company’s allowance for credit losses on unfunded commitments is recognized as a liability (other liabilities on the consolidated balance sheet), with adjustments to the reserve recognized in other noninterest expense in the consolidated statement of income. The Company’s activity in the allowance for credit losses on unfunded commitments for the three and nine months ended September 30, 2023 and 2022 was as follows: Three Months Ended (In thousands) 2023 2022 Balance at beginning of period $ 8,687 $ 7,043 Expense for credit losses 300 700 Balance at end of period $ 8,987 $ 7,743 Nine Months Ended September 30, (In thousands) 2023 2022 Balance at beginning of period $ 8,588 $ 7,043 Expense for credit losses 399 700 Balance at end of period $ 8,987 $ 7,743 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) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of September 30, 2023 Construction Current period gross write-offs $ — $ — $ — $ — $ — $ 1 $ — $ — $ 1 Risk rating Pass $ 71,516 $ 301,236 $ 139,599 $ 29,177 $ 2,553 $ 564 $ — $ — $ 544,645 Special Mention — — 471 — — — — — 471 Substandard — — 16,575 — — — — — 16,575 Total $ 71,516 $ 301,236 $ 156,645 $ 29,177 $ 2,553 $ 564 $ — $ — $ 561,691 Commercial multifamily: Current period gross write-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Risk rating Pass $ 8,974 $ 217,062 $ 57,061 $ 27,126 $ 95,398 $ 187,225 $ 998 $ — $ 593,844 Special Mention — — — — — — — — — Substandard — — 244 2,573 — 5,459 — — 8,276 Total $ 8,974 $ 217,062 $ 57,305 $ 29,699 $ 95,398 $ 192,684 $ 998 $ — $ 602,120 Commercial real estate owner occupied: Current period gross write-offs $ — $ — $ — $ 380 $ — $ 109 $ — $ — $ 489 Risk rating Pass $ 80,561 $ 123,110 $ 126,637 $ 68,938 $ 71,603 $ 173,060 $ 1,642 $ — $ 645,551 Special Mention — — — 387 885 2,447 — — 3,719 Substandard — 11 81 47 4,141 4,639 — — 8,919 Total $ 80,561 $ 123,121 $ 126,718 $ 69,372 $ 76,629 $ 180,146 $ 1,642 $ — $ 658,189 Commercial real estate non-owner occupied: Current period gross write-offs $ — $ — $ — $ — $ 1 $ — $ — $ — $ 1 Risk rating Pass $ 349,765 $ 584,973 $ 386,493 $ 141,534 $ 279,849 $ 767,366 $ 18,312 $ — $ 2,528,292 Special Mention — — — — 27,219 12,806 — — 40,025 Substandard — — — 6,923 5,879 24,704 — — 37,506 Total $ 349,765 $ 584,973 $ 386,493 $ 148,457 $ 312,947 $ 804,876 $ 18,312 $ — $ 2,605,823 Commercial and industrial: Current period gross write-offs $ — $ 700 $ 645 $ 2,158 $ 1,429 $ 7,380 $ 2,313 $ — $ 14,625 Risk rating Pass $ 100,443 $ 234,213 $ 124,139 $ 49,315 $ 43,656 $ 129,863 $ 596,559 $ — $ 1,278,188 Special Mention 1,801 3,323 4,829 2,111 633 1,574 17,575 — 31,846 Substandard 460 915 9,060 1,542 5,353 17,823 17,058 — 52,211 Doubtful — — — — — — 1,526 — 1,526 Total $ 102,704 $ 238,451 $ 138,028 $ 52,968 $ 49,642 $ 149,260 $ 632,718 $ — $ 1,363,771 Term Loans Amortized Cost Basis by Origination Year (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Residential real estate Current period gross write-offs $ — $ 50 $ — $ 50 $ 174 $ 39 $ — $ — $ 313 Risk rating Pass $ 527,326 $ 986,269 $ 269,172 $ 91,540 $ 66,691 $ 774,516 $ 141 $ — $ 2,715,655 Special Mention — — — — 741 816 — — 1,557 Substandard — 132 1,024 379 1,361 9,303 — — 12,199 Total $ 527,326 $ 986,401 $ 270,196 $ 91,919 $ 68,793 $ 784,635 $ 141 $ — $ 2,729,411 Term Loans Amortized Cost Basis by Origination Year (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of December 31, 2022 Construction Risk rating Pass $ 153,393 $ 133,708 $ 25,634 $ 3,432 $ 1,361 $ 1,924 $ — $ — $ 319,452 Special Mention — — — — — — — — — Substandard — — — — — — — — — Total $ 153,393 $ 133,708 $ 25,634 $ 3,432 $ 1,361 $ 1,924 $ — $ — $ 319,452 Commercial multifamily: Risk rating Pass $ 205,124 $ 61,032 $ 27,583 $ 100,696 $ 67,675 $ 149,633 $ 205 $ — $ 611,948 Special Mention — — 2,628 — — — — — 2,628 Substandard — — — — 5,512 — — — 5,512 Total $ 205,124 $ 61,032 $ 30,211 $ 100,696 $ 73,187 $ 149,633 $ 205 $ — $ 620,088 Commercial real estate owner occupied: Risk rating Pass $ 131,096 $ 127,270 $ 58,835 $ 82,576 $ 75,322 $ 154,056 $ 3,464 $ — $ 632,619 Special Mention — — 387 — — — — — 387 Substandard 1,003 122 31 282 1,056 4,989 — — 7,483 Total $ 132,099 $ 127,392 $ 59,253 $ 82,858 $ 76,378 $ 159,045 $ 3,464 $ — $ 640,489 Commercial real estate non-owner occupied: Risk rating Pass $ 621,685 $ 410,359 $ 175,456 $ 333,783 $ 313,124 $ 530,322 $ 17,846 $ — $ 2,402,575 Special Mention — — — — 20,000 18,462 — — 38,462 Substandard — — 7,237 13,623 15,610 18,730 — — 55,200 Total $ 621,685 $ 410,359 $ 182,693 $ 347,406 $ 348,734 $ 567,514 $ 17,846 $ — $ 2,496,237 Commercial and industrial: Risk rating Pass $ 282,781 $ 147,070 $ 56,880 $ 67,975 $ 83,223 $ 99,367 $ 648,956 $ — $ 1,386,252 Special Mention — 5,811 1,290 1,332 11,502 912 2,632 — 23,479 Substandard 204 496 3,640 8,139 1,981 2,799 10,581 — 27,840 Doubtful — — — — — 56 7,609 — 7,665 Total $ 282,985 $ 153,377 $ 61,810 $ 77,446 $ 96,706 $ 103,134 $ 669,778 $ — $ 1,445,236 Residential real estate Risk rating Pass $ 997,981 $ 280,308 $ 96,548 $ 70,845 $ 138,894 $ 713,744 $ 165 $ — $ 2,298,485 Special Mention — 364 — 861 202 707 — — 2,134 Substandard — 284 448 267 1,857 8,972 — — 11,828 Total $ 997,981 $ 280,956 $ 96,996 $ 71,973 $ 140,953 $ 723,423 $ 165 $ — $ 2,312,447 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) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of September 30, 2023 Home equity: Current period gross write-offs $ — $ — $ — $ 70 $ — $ — $ 18 $ — $ 88 Payment performance Performing $ — $ — $ — $ 443 $ — $ 2,615 $ 222,691 $ — $ 225,749 Nonperforming — — — — — — 1,303 — 1,303 Total $ — $ — $ — $ 443 $ — $ 2,615 $ 223,994 $ — $ 227,052 Consumer other: Current period gross write-offs $ 65 $ 5,729 $ 804 $ 11 $ 44 $ 195 $ — $ — $ 6,848 Payment performance Performing $ 40,770 $ 121,690 $ 21,794 $ 6,468 $ 8,261 $ 26,015 $ 10,561 $ — $ 235,559 Nonperforming 17 116 60 29 139 386 14 — 761 Total $ 40,787 $ 121,806 $ 21,854 $ 6,497 $ 8,400 $ 26,401 $ 10,575 $ — $ 236,320 Term Loans Amortized Cost Basis by Origination Year (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of December 31, 2022 Home equity: Payment performance Performing $ — $ 114 $ 454 $ — $ — $ 17 $ 224,746 $ — $ 225,331 Nonperforming — — — — — — 2,119 — 2,119 Total $ — $ 114 $ 454 $ — $ — $ 17 $ 226,865 $ — $ 227,450 Consumer other: Payment performance Performing $ 161,157 $ 28,279 $ 8,312 $ 12,670 $ 27,608 $ 24,682 $ 9,070 $ — $ 271,778 Nonperforming 588 137 44 280 477 567 39 — 2,132 Total $ 161,745 $ 28,416 $ 8,356 $ 12,950 $ 28,085 $ 25,249 $ 9,109 $ — $ 273,910 The following is a summary of loans by past due status at September 30, 2023 and December 31, 2022: (In thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans September 30, 2023 Construction $ — $ — $ — $ — $ 561,691 $ 561,691 Commercial multifamily 5,853 — — 5,853 596,267 602,120 Commercial real estate owner occupied 334 599 1,423 2,356 655,833 658,189 Commercial real estate non-owner occupied 240 132 4,010 4,382 2,601,441 2,605,823 Commercial and industrial 1,263 267 11,086 12,616 1,351,155 1,363,771 Residential real estate 3,988 1,557 12,170 17,715 2,711,696 2,729,411 Home equity 688 26 1,616 2,330 224,722 227,052 Consumer other 2,111 1,642 2,076 5,829 230,491 236,320 Total $ 14,477 $ 4,223 $ 32,381 $ 51,081 $ 8,933,296 $ 8,984,377 (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, 2022 Construction $ — $ — $ — $ — $ 319,452 $ 319,452 Commercial multifamily — 214 — 214 619,874 620,088 Commercial real estate owner occupied 122 — 3,302 3,424 637,065 640,489 Commercial real estate non-owner occupied 143 — 191 334 2,495,903 2,496,237 Commercial and industrial 1,173 1,438 18,658 21,269 1,423,967 1,445,236 Residential real estate 3,694 2,134 11,724 17,552 2,294,895 2,312,447 Home equity 168 57 2,119 2,344 225,106 227,450 Consumer other 1,990 1,028 2,158 5,176 268,734 273,910 Total $ 7,290 $ 4,871 $ 38,152 $ 50,313 $ 8,284,996 $ 8,335,309 The following is a summary of loans on nonaccrual status and loans past due 90 days or more and still accruing as of September 30, 2023 and December 31, 2022: (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 September 30, 2023 Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied 1,212 257 211 — Commercial real estate non-owner occupied 4,010 52 — — Commercial and industrial 10,982 8,271 104 — Residential real estate 8,368 4,678 3,802 — Home equity 1,303 442 313 — Consumer other 761 — 1,315 — Total $ 26,636 $ 13,700 $ 5,745 $ — The commercial and industrial loans nonaccrual amortized cost as of September 30, 2023 included medallion loans with a fair value of $0.4 million and a contractual balance of $9.1 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, 2022 Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied 2,202 1,411 1,100 — Commercial real estate non-owner occupied 191 73 — — Commercial and industrial 16,992 14,223 1,666 — Residential real estate 8,901 5,307 2,823 — Home equity 1,568 388 551 — Consumer other 1,260 2 898 — Total $ 31,114 $ 21,404 $ 7,038 $ — The commercial and industrial loans nonaccrual amortized cost as of December 31, 2022 included medallion loans with a fair value of $0.6 million and a contractual balance of $10.9 million. The following table summarizes information about total loans rated Special Mention or lower at September 30, 2023 and December 31, 2022. The table below includes consumer loans that are Special Mention and Substandard accruing that are classified as performing based on payment activity. (In thousands) September 30, 2023 December 31, 2022 Non-Accrual $ 26,636 $ 31,114 Substandard Accruing 114,252 88,665 Total Classified 140,888 119,779 Special Mention 79,258 68,127 Total Criticized $ 220,146 $ 187,906 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 September 30, 2023 Construction $ — $ — $ — Commercial multifamily — — Commercial real estate owner occupied 633 — — Commercial real estate non-owner occupied 352 — — Commercial and industrial 4,813 — 3,420 Residential real estate 6,951 — — Home equity 458 — — Consumer other 42 — — Total loans $ 13,249 $ — $ 3,420 December 31, 2022 Construction $ — $ — $ — Commercial multifamily — — — Commercial real estate owner occupied 2,793 — — Commercial real estate non-owner occupied 384 — — Commercial and industrial 288 — 16,931 Residential real estate 3,910 — — Home equity 501 — — Consumer other 2 — — Total loans $ 7,878 $ — $ 16,931 Modified Loans Occasionally, the Company modifies loans to borrowers in financial distress by providing principal forgiveness, term extension, an other-than-insignificant payment delay or interest rate reduction. When principal forgiveness is provided, the amount of forgiveness is charged-off against the allowance for credit losses. In some cases, the Company provides multiple types of concessions on one loan. Typically, one type of concession, such as a term extension, is granted initially. If the borrower continues to experience financial difficulty, another concession, such as principal forgiveness, may be granted. For the loans included in the "combination" columns below, multiple types of modifications have been made on the same loan within the current reporting period. The combination is at least two of the following: a term extension and principal forgiveness, an other-than-insignificant payment delay and/or an interest rate reduction. The following table presents the amortized cost basis of loans at September 30, 2023 that were both experiencing financial difficulty and modified during the three and nine months ended September 30, 2023, by class and by type of modification. The percentage of the amortized cost basis of loans that were modified to borrowers in financial distress as compared to the amortized cost basis of each class of financing receivable is also presented below: (In thousands) Principal Forgiveness Payment Delay Term Extension Interest Rate Reduction Combination Term Extension and Principal Forgiveness Combination Term Extension and Interest Rate Reduction Total Class of Financing Receivable Three months ended September 30, 2023 Construction $ — $ — $ — $ — $ — $ — — % Commercial multifamily — — — — — — — Commercial real estate owner occupied — — — — — — — Commercial real estate non-owner occupied — — — — — — Commercial and industrial — 34 6,240 — — — 0.46 % Residential real estate — — — — — — — Home equity — — — — — — — Consumer other — — — — — — — Total $ — $ 34 $ 6,240 $ — $ — $ — 0.07 % (In thousands) Principal Forgiveness Payment Delay Term Extension Interest Rate Reduction Combination Term Extension and Principal Forgiveness Combination Term Extension and Interest Rate Reduction Total Class of Financing Receivable Nine months ended September 30, 2023 Construction $ — $ — $ — $ — $ — $ — — % Commercial multifamily — — — — — — — Commercial real estate owner occupied — 387 — — — — 0.06 Commercial real estate non-owner occupied — — 11,733 — — — 0.85 Commercial and industrial — 34 7,531 — 10 — 0.56 Residential real estate — — — — — — — Home equity — — — — — — — Consumer other — — — — — — — Total $ — $ 421 $ 19,264 $ — $ 10 $ — 0.22 % The Company has not committed to lend additional amounts to the borrowers included in the previous table. The Company closely monitors the performance of loans that are modified to borrowers experiencing financial difficulty to understand the effectiveness of its modification efforts. As of September 30, 2023, there were no loans that were modified to borrowers experiencing financial difficulty that were past due. The following table presents the financial effect of the loan modifications presented above to borrowers experiencing financial difficulty for the three and nine months ended September 30, 2023: (In thousands) Principal Forgiveness Weighted Average Interest Rate Reduction Weighted Average Term Extension (months) Three months ended September 30, 2023 Construction $ — — % 0 Commercial multifamily — — 0 Commercial real estate owner occupied — — 0 Commercial real estate non-owner occupied — — 0 Commercial and industrial — — 17 Residential real estate — — 0 Home equity — — 0 Consumer other — — 0 (In thousands) Principal Forgiveness Weighted Average Interest Rate Reduction Weighted Average Term Extension (months) Nine months ended September 30, 2023 Construction $ — — % 0 Commercial multifamily — — 0 Commercial real estate owner occupied — — 120 Commercial real estate non-owner occupied — — 12 Commercial and industrial — 1.00 34 Residential real estate — — 0 Home equity — — 0 Consumer other — — 0 There were no loans that had a payment default during the three and nine months ended September 30, 2023 that were modified in the twelve months prior to that default to borrowers experiencing financial difficulty.

DEPOSITS

DEPOSITS	9 Months Ended
	Sep. 30, 2023
Deposits [Abstract]
DEPOSITS	DEPOSITS A summary of time deposits is as follows: (In thousands) September 30, December 31, Time less than $100,000 $ 666,406 $ 549,265 Time $100,000 through $250,000 1,158,816 642,600 Time more than $250,000 620,213 441,842 Total time deposits $ 2,445,435 $ 1,633,707

BORROWED FUNDS

BORROWED FUNDS	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
BORROWED FUNDS	BORROWED FUNDS Borrowed funds at September 30, 2023 and December 31, 2022 are summarized as follows: September 30, 2023 December 31, 2022 Weighted Weighted Average Average (Dollars in thousands) Principal Rate Principal Rate Short-term debt: Advances from the FHLB $ 670,000 5.57 % $ — — % Total short-term borrowings: 670,000 5.57 — — Long-term debt: Advances from the FHLB and other borrowings 134,295 4.06 4,445 0.71 Subordinated borrowings 98,286 5.50 98,089 5.50 Junior subordinated borrowing - Trust I 15,464 7.49 15,464 6.54 Junior subordinated borrowing - Trust II 7,550 7.37 7,511 6.47 Total long-term borrowings: 255,595 4.92 125,509 5.52 Total $ 925,595 5.39 % $ 125,509 5.52 % Short-term debt includes Federal Home Loan Bank (“FHLB”) advances with an original maturity of less than one year. 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 September 30, 2023 and December 31, 2022. The Bank's available borrowing capacity with the FHLB was $2.0 billion and $1.5 billion for the periods ended September 30, 2023 and December 31, 2022. 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. The Bank had no borrowings with the Federal Reserve Bank under this arrangement during the periods ended September 30, 2023 and December 31, 2022, respectively. The Bank's available borrowing capacity with the Federal Reserve Bank was $1.4 billion and $0.6 billion for the periods ended September 30, 2023 and December 31, 2022, 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 September 30, 2023 included callable advances totaling $60.0 million and amortizing advances totaling $4.3 million. There were no callable advances outstanding at December 31, 2022. The advances outstanding at December 31, 2022 included amortizing advances totaling $4.4 million. All FHLB borrowings, including the line of credit, are secured by a blanket security agreement on certain qualified collateral, principally all residential first mortgage loans and certain securities. A summary of maturities of FHLB advances as of September 30, 2023 is as follows: September 30, 2023 Weighted Average (In thousands, except rates) Principal Rate Fixed rate advances maturing: 2023 $ 660,000 5.57 % 2024 40,014 5.05 2025 40,000 4.55 2026 30,530 3.68 2027 and beyond 33,751 3.07 Total FHLB advances $ 804,295 5.32 % The Company did not have variable-rate FHLB advances for the periods ended September 30, 2023 and December 31, 2022, respectively. In June 2022, the Company issued ten year subordinated notes in the amount of $100.0 million. The interest rate is fixed at 5.50% for the first five years. After five years, the notes become callable and will bear interest at a floating rate per annum equal to a benchmark rate (which is expected to be Three-Month Term SOFR), plus 249 basis points. The subordinated note includes reduction to the note principal balance of $1.7 million for unamortized debt issuance costs as of September 30, 2023. The Company holds 100% of the common stock of Berkshire Hills Capital Trust I (“Trust I”) which is included in other assets at 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 3-month CME Term SOFR plus 1.85% and had a rate of 7.49% and 6.54% at September 30, 2023 and December 31, 2022, 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 at 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 3-month CME Term SOFR plus 1.70% and had a rate of 7.37% and 6.47% at September 30, 2023 and December 31, 2022, 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	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES As of September 30, 2023, the Company held derivatives with a total notional amount of $4.8 billion. That amount included $0.8 billion in interest rate swap derivatives that were designated as cash flow hedges for accounting purposes. The Company also had economic hedges totaling $4.0 billion and $6.4 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 $3.6 billion, risk participation agreements with dealer banks of $0.4 billion, and $2.3 million in forward commitment contracts. As of December 30, 2022, the Company held derivatives with a total notional amount of $4.5 billion. That amount included $0.6 billion in interest rate swap derivatives and $0.2 billion in interest rate collars that were designated as cash flow hedges for accounting purposes. The Company had economic hedges and non-hedging derivatives totaling $3.7 billion and $4.1 million, respectively, which are not designated as hedges for accounting purposes and are therefore recorded at fair value 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 $341.9 million, and $0.9 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 September 30, 2023. The Company had no pledged collateral to derivative counterparties in the form of cash as of September 30, 2023. The Company had pledged securities to derivative counterparties with an amortized cost of $10.0 million and a fair value of $9.7 million as of September 30, 2023. 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 September 30, 2023, follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on commercial loans (1) $ 600,000 2.1 3.64 % 5.32 % $ 841 Interest rate collars on commercial loans 200,000 2.8 105 Total cash flow hedges 800,000 946 Economic hedges: Interest rate swap on tax advantaged economic development bond $ 6,421 6.2 4.96 % 5.09 % $ (30) Interest rate swaps on loans with commercial loan customers 1,788,086 5.0 4.30 % 6.42 % (117,048) Offsetting interest rate swaps on loans with commercial loan customers (1) 1,788,086 5.0 6.42 % 4.30 % 63,705 Risk participation agreements with dealer banks 377,852 5.7 (16) Forward sale commitments 2,312 0.2 10 Total economic hedges 3,962,757 (53,379) Non-hedging derivatives: Commitments to lend 6,409 0.2 (9) Total non-hedging derivatives 6,409 (9) Total $ 4,769,166 $ (52,442) (1) Fair value estimates include the impact of $38.5 million settled to market contract agreements. Information about derivative assets and liabilities at December 31, 2022, follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on commercial loans $ 400,000 2.7 4.09 % 3.51 % $ — Forward-starting interest rate swaps on commercial loans 200,000 3.3 — % 3.90 % — Interest rate collars on commercial loans 200,000 3.5 1,937 800,000 1,937 Economic hedges: Interest rate swap on tax advantaged economic development bond $ 7,062 6.9 4.49 % 5.09 % $ (193) Interest rate swaps on loans with commercial loan customers 1,685,263 5.7 4.11 % 5.55 % (95,114) Offsetting interest rate swaps on loans with commercial loan customers (1) 1,685,263 5.7 5.55 % 4.11 % 50,267 Risk participation agreements with dealer banks 341,885 6.6 (89) Forward sale commitments 927 0.2 8 Total economic hedges 3,720,400 (45,121) Non-hedging derivatives: Commitments to lend 4,114 0.2 17 Total non-hedging derivatives 4,114 17 Total $ 4,524,514 $ (43,167) (1) Fair value estimates include the impact of $38.3 million settled to market contract agreements. Cash flow hedges The effective portion of unrealized changes in the fair value of derivatives accounted for as cash flow hedges is reported in other comprehensive income and subsequently reclassified to earnings in the same period or periods during which the hedged transaction is forecasted to affect earnings. Each quarter, the Company assesses the effectiveness of each hedging relationship by comparing the changes in cash flows of the derivative hedging instrument with the changes in cash flows of the designated hedged item or transaction. The ineffective portion of changes in the fair value of the derivatives is recognized directly in earnings. All cash flow hedges are considered highly effective. As of September 30, 2023, the Company had eight interest rate swap contracts with a notional value of $800.0 million. The interest rate swaps have durations of two As of September 30, 2023, the Company had two interest rate collars. The first interest rate collar has a 3.00% floor and a 5.75% cap with a notional value of $100.0 million. The second interest rate collar has a 3.25% floor and a 5.75% cap with a notional value of $100.0 million. The interest rate collars have durations of three Amounts included in the Consolidated Statements of Income and in the other comprehensive income section of the Consolidated Statements of Comprehensive Income (related to interest rate derivatives designated as hedges of cash flows), were as follows: Three Months Ended Nine Months Ended September 30, (In thousands) 2023 2022 2023 2022 Interest rate swaps on commercial loans: Unrealized (loss) recognized in accumulated other comprehensive loss $ (2,800) $ (5,555) $ (8,599) $ (5,555) Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest expense (159) — (473) — Net tax benefit on items recognized in accumulated other comprehensive income 794 1,494 2,435 1,494 Other comprehensive loss recorded in accumulated other comprehensive income, net of reclassification adjustments and tax effects $ (2,165) $ (4,061) $ (6,637) $ (4,061) Net interest expense recognized on hedged commercial loans $ 2,621 $ (136) $ 6,262 $ (136) Economic hedges As of September 30, 2023, the Company has an interest rate swap with a $6.4 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 SOFR-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. There was no credit valuation loss adjustment arising from the difference in credit worthiness of the commercial loan and financial institution counterparties as of September 30, 2023. 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 September 30, Nine Months Ended September 30, (In thousands) 2023 2022 2023 2022 Economic hedges Interest rate swap on industrial revenue bond: Unrealized gain recognized in other non-interest income $ 88 $ 304 $ 163 $ 953 Interest rate swaps on loans with commercial loan customers: Unrealized (loss) recognized in other non-interest income (24,728) (53,788) (21,934) (177,413) Favorable change in credit valuation adjustment recognized in other non-interest income — — — 1,809 Offsetting interest rate swaps on loans with commercial loan customers: Unrealized gain recognized in other non-interest income 24,728 53,788 21,934 177,413 Risk participation agreements: Unrealized gain/(loss) recognized in other non-interest income 65 (19) 73 (419) Forward commitments: Unrealized (loss)/gain recognized in other non-interest income (53) (11) 2 (127) Non-hedging derivatives Commitments to lend Unrealized (loss) recognized in other non-interest income $ (46) $ (100) $ (26) $ (108) Realized gain in other non-interest income 210 78 304 420 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 $64.0 million and $51.2 million as of September 30, 2023 and December 31, 2022, respectively. The Company had net asset positions with its commercial banking counterparties totaling $0.3 million and $1.0 million as of September 30, 2023 and December 31, 2022, respectively. The Company had net liability positions with its financial institution counterparties totaling $0.3 million and $1.2 million as of September 30, 2023 and December 31, 2022, respectively. The Company had net liability positions with its commercial banking counterparties totaling $116.6 million and $96.1 million as of September 30, 2023 and December 31, 2022. 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 September 30, 2023 and December 31, 2022: 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 September 30, 2023 Interest Rate Swap Agreements: Institutional counterparties $ 117,306 $ (53,346) $ 63,960 $ — $ — $ 63,960 Commercial counterparties 261 — 261 — — 261 Total $ 117,567 $ (53,346) $ 64,221 $ — $ — $ 64,221 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 September 30, 2023 Interest Rate Swap Agreements: Institutional counterparties $ (274) $ 2 $ (272) $ 9,676 $ — $ 9,404 Commercial counterparties (131,221) 14,857 (116,364) — — (116,364) Total $ (131,495) $ 14,859 $ (116,636) $ 9,676 $ — $ (106,960) 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, 2022 Interest Rate Swap Agreements: Institutional counterparties $ 96,295 $ (45,046) $ 51,249 $ — $ — $ 51,249 Commercial counterparties 975 — 975 — — 975 Total $ 97,270 $ (45,046) $ 52,224 $ — $ — $ 52,224 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, 2022 Interest Rate Swap Agreements: Institutional counterparties $ (1,271) $ 36 $ (1,235) $ 11,973 $ — $ 10,738 Commercial counterparties (102,595) 6,507 (96,088) — — (96,088) Total $ (103,866) $ 6,543 $ (97,323) $ 11,973 $ — $ (85,350)

LEASES

LEASES	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023, lease expiration dates ranged from 1 month to 16 years. The following table represents the Consolidated Balance Sheets classification of the Company’s right-of-use (“ROU”) assets and lease liabilities: (In thousands) September 30, 2023 December 31, 2022 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 48,173 $ 46,411 Finance lease right-of-use assets Premises and equipment, net 5,727 6,151 Total Lease Right-of-Use Assets $ 53,900 $ 52,562 Lease Liabilities Operating lease liabilities Other liabilities $ 54,128 $ 53,736 Finance lease liabilities Other liabilities 8,831 9,306 Total Lease Liabilities $ 62,959 $ 63,042 Supplemental information related to leases was as follows: September 30, 2023 December 31, 2022 Weighted-Average Remaining Lease Term (in years) Operating leases 8.5 9.3 Finance leases 11.1 11.8 Weighted-Average Discount Rate Operating leases 2.85 % 2.56 % 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 September 30, 2023 was $2.2 million. Lease expense for operating leases for the nine months ended September 30, 2023 was $6.9 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 September 30, 2022 was $2.2 million. Lease expense for operating leases for the nine months ended September 30, 2022 was $7.3 million. 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) September 30, 2023 September 30, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 2,267 $ 2,518 Operating cash flows from finance leases 112 119 Financing cash flows from finance leases 148 139 Nine Months Ended (In thousands) September 30, 2023 September 30, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 6,800 $ 7,657 Operating cash flows from finance leases 336 359 Financing cash flows from finance leases 443 414 The following table presents a maturity analysis of the Company’s lease liability by lease classification at September 30, 2023: (In thousands) Operating Leases Finance Leases 2023 $ 2,399 $ 260 2024 9,470 1,039 2025 8,259 1,039 2026 7,262 1,039 2027 6,383 1,039 Thereafter 26,594 7,075 Total undiscounted lease payments 60,367 11,491 Less amounts representing interest (6,239) (2,660) Lease liability $ 54,128 $ 8,831
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 September 30, 2023, lease expiration dates ranged from 1 month to 16 years. The following table represents the Consolidated Balance Sheets classification of the Company’s right-of-use (“ROU”) assets and lease liabilities: (In thousands) September 30, 2023 December 31, 2022 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 48,173 $ 46,411 Finance lease right-of-use assets Premises and equipment, net 5,727 6,151 Total Lease Right-of-Use Assets $ 53,900 $ 52,562 Lease Liabilities Operating lease liabilities Other liabilities $ 54,128 $ 53,736 Finance lease liabilities Other liabilities 8,831 9,306 Total Lease Liabilities $ 62,959 $ 63,042 Supplemental information related to leases was as follows: September 30, 2023 December 31, 2022 Weighted-Average Remaining Lease Term (in years) Operating leases 8.5 9.3 Finance leases 11.1 11.8 Weighted-Average Discount Rate Operating leases 2.85 % 2.56 % 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 September 30, 2023 was $2.2 million. Lease expense for operating leases for the nine months ended September 30, 2023 was $6.9 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 September 30, 2022 was $2.2 million. Lease expense for operating leases for the nine months ended September 30, 2022 was $7.3 million. 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) September 30, 2023 September 30, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 2,267 $ 2,518 Operating cash flows from finance leases 112 119 Financing cash flows from finance leases 148 139 Nine Months Ended (In thousands) September 30, 2023 September 30, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 6,800 $ 7,657 Operating cash flows from finance leases 336 359 Financing cash flows from finance leases 443 414 The following table presents a maturity analysis of the Company’s lease liability by lease classification at September 30, 2023: (In thousands) Operating Leases Finance Leases 2023 $ 2,399 $ 260 2024 9,470 1,039 2025 8,259 1,039 2026 7,262 1,039 2027 6,383 1,039 Thereafter 26,594 7,075 Total undiscounted lease payments 60,367 11,491 Less amounts representing interest (6,239) (2,660) Lease liability $ 54,128 $ 8,831

CAPITAL RATIOS AND SHAREHOLDERS

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
CAPITAL RATIOS AND SHAREHOLDERS' EQUITY	CAPITAL RATIOS AND SHAREHOLDERS’ EQUITY The actual and required capital ratios were as follows: September 30, December 31, Minimum Capital Requirement Company (consolidated) Total capital to risk-weighted assets 14.4 % 14.6 % 8.0 % Common equity tier 1 capital to risk-weighted assets 12.1 12.4 4.5 Tier 1 capital to risk-weighted assets 12.3 12.6 6.0 Tier 1 capital to average assets 9.8 10.2 4.0 September 30, December 31, Regulatory Minimum to be Adequately Capitalized Regulatory Bank Total capital to risk-weighted assets 13.4 % 13.6 % 8.0 % 10.0 % Common equity tier 1 capital to risk-weighted assets 12.4 12.6 4.5 6.5 Tier 1 capital to risk-weighted assets 12.4 12.6 6.0 8.0 Tier 1 capital to average assets 9.7 10.2 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. 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%, including a 2.5% capital conservation buffer. Capital rules impose restrictions on capital distributions and certain discretionary cash bonus payments if the capital conservation buffer is not met. At September 30, 2023, 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 September 30, 2023 also exceeded the minimum capital requirements including the currently applicable capital conservation buffer of 2.5%. Accumulated other comprehensive (loss) Components of accumulated other comprehensive (loss) is as follows: (In thousands) September 30, December 31, Other accumulated comprehensive income, before tax: Net unrealized holding (loss) on AFS securities $ (278,285) $ (236,887) Net unrealized (loss) on cash flow hedging derivatives (15,739) (6,667) Net unrealized holding (loss) on pension plans (844) (844) Income taxes related to items of accumulated other comprehensive income: Net unrealized tax benefit on AFS securities 72,030 61,329 Net unrealized tax benefit on cash flow hedging derivatives 4,224 1,789 Net unrealized tax benefit on pension plans 228 228 Accumulated other comprehensive loss $ (218,386) $ (181,052) The following table presents the components of other comprehensive (loss) for the three and nine months ended September 30, 2023 and 2022: (In thousands) Before Tax Tax Effect Net of Tax Three Months Ended September 30, 2023 Net unrealized holding loss on AFS securities: x Net unrealized (losses) arising during the period $ (40,525) $ 10,544 $ (29,981) Less: reclassification adjustment for gains realized in net income — — — Net unrealized holding gain on AFS securities (40,525) 10,544 (29,981) Net unrealized loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (3,118) 836 (2,282) Less: reclassification adjustment for (losses) realized in net income (159) 42 (117) Net unrealized loss on cash flow hedging derivatives (2,959) 794 (2,165) Other comprehensive (loss) $ (43,484) $ 11,338 $ (32,146) Three Months Ended September 30, 2022 Net unrealized holding loss on AFS securities: Net unrealized (losses) arising during the period $ (83,073) $ 21,639 $ (61,434) Less: reclassification adjustment for gains realized in net income — — — Net unrealized holding (loss) on AFS securities (83,073) 21,639 (61,434) Net unrealized loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (5,555) 1,494 (4,061) Less: reclassification adjustment for (losses) realized in net income — — — Net unrealized (loss) on cash flow hedging derivatives (5,555) 1,494 (4,061) Other comprehensive (loss) $ (88,628) $ 23,133 $ (65,495) (In thousands) Before Tax Tax Effect Net of Tax Nine Months Ended September 30, 2023 Net unrealized holding loss on AFS securities: Net unrealized (losses) arising during the period $ (41,398) $ 10,701 $ (30,697) Less: reclassification adjustment for gains realized in net income — — — Net unrealized holding (loss) on AFS securities (41,398) 10,701 (30,697) Net unrealized loss on cash flow hedging derivatives: Net unrealized (losses) arising during the period (9,545) 2,562 (6,983) Less: reclassification adjustment for (losses) realized in net income (473) 127 (346) Net unrealized loss on cash flow hedging derivatives (9,072) 2,435 (6,637) Other comprehensive (loss) $ (50,470) $ 13,136 $ (37,334) Nine Months Ended September 30, 2022 Net unrealized holding loss on AFS securities: Net unrealized (losses) arising during the period $ (244,927) $ 63,741 $ (181,186) Less: reclassification adjustment for gains realized in net income 6 (2) 4 Net unrealized holding (loss) on AFS securities (244,933) 63,743 (181,190) Net unrealized loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (5,555) 1,494 (4,061) Less: reclassification adjustment for (losses) realized in net income — — — Net unrealized (loss) on cash flow hedging derivatives (5,555) 1,494 (4,061) Other comprehensive (loss) (250,488) 65,237 (185,251) The following table presents the changes in each component of accumulated other comprehensive (loss), for the three and nine months ended September 30, 2023 and 2022: (In thousands) Net unrealized Net loss on Net unrealized Total Three Months Ended September 30, 2023 Balance at Beginning of Period $ (176,274) $ (9,350) $ (616) $ (186,240) Other comprehensive (loss) before reclassifications (29,981) (2,282) (32,263) Less: amounts reclassified from accumulated other comprehensive (loss) — (117) — (117) Total other comprehensive (loss) (29,981) (2,165) — (32,146) Balance at End of Period $ (206,255) $ (11,515) $ (616) $ (218,386) Three Months Ended September 30, 2022 Balance at Beginning of Period $ (121,154) $ — $ (1,845) $ (122,999) Other comprehensive (loss) before reclassifications (61,434) (4,061) — (65,495) Less: amounts reclassified from accumulated other comprehensive (loss) — — — — Total other comprehensive income (61,434) (4,061) — (65,495) Balance at End of Period $ (182,588) $ (4,061) $ (1,845) $ (188,494) (In thousands) Net unrealized Net loss on Net unrealized Total Nine Months Ended September 30, 2023 Balance at Beginning of Period $ (175,558) $ (4,878) $ (616) $ (181,052) Other comprehensive (loss) before reclassifications (30,697) (6,983) — $ (37,680) Less: amounts reclassified from accumulated other comprehensive (loss) — (346) — $ (346) Total other comprehensive (loss) (30,697) (6,637) — (37,334) Balance at End of Period (206,255) (11,515) (616) (218,386) Nine Months Ended September 30, 2022 Balance at Beginning of Period $ (1,398) $ — $ (1,845) $ (3,243) Other comprehensive (loss) before reclassifications (181,186) (4,061) (185,247) Less: amounts reclassified from accumulated other comprehensive (loss) 4 — — 4 Total other comprehensive income (181,190) (4,061) — (185,251) Balance at End of Period $ (182,588) $ (4,061) $ (1,845) $ (188,494) The following table presents the amounts reclassified out of each component of accumulated other comprehensive income for the three and nine months ended September 30, 2023 and 2022: Affected Line Item in the Three Months Ended September 30, Statement where Net Income (In thousands) 2023 2022 is Presented Realized gains on AFS securities: $ — $ — Non-interest income — — Tax expense — — Net of tax Realized (losses) on cash flow hedging derivatives: (159) — Interest expense — — Non-interest expense 42 — Tax benefit (117) — Net of tax Total reclassifications for the period $ (117) $ — Net of tax Affected Line Item in the Nine Months Ended September 30, Statement where Net Income (In thousands) 2023 2022 is Presented Realized gains on AFS securities: $ — $ 6 Non-interest income — (2) Tax expense — 4 Net of tax Realized (losses) on cash flow hedging derivatives: (473) — Interest expense — — Non-interest expense 127 — Tax benefit (346) — Net of tax Total reclassifications for the period $ (346) $ 4 Net of tax

EARNINGS PER SHARE

EARNINGS PER SHARE	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
EARNINGS PER SHARE	EARNINGS PER SHARE Earnings per share have been computed based on the following (average diluted shares outstanding are calculated using the treasury stock method): Three Months Ended September 30, Nine Months Ended September 30, (In thousands, except per share data) 2023 2022 2023 2022 Net income $ 19,545 $ 18,717 $ 71,043 $ 62,028 Average number of common shares issued 51,903 51,903 51,903 51,903 Less: average number of treasury shares 7,916 6,433 7,675 5,068 Less: average number of unvested stock award shares 823 770 793 779 Average number of basic shares outstanding 43,164 44,700 43,435 46,056 Plus: dilutive effect of unvested stock award shares 183 330 205 336 Plus: dilutive effect of stock options outstanding — 4 — 4 Average number of diluted shares outstanding 43,347 45,034 43,640 46,396 Basic earnings per common share: $ 0.45 $ 0.42 $ 1.64 $ 1.35 Diluted earnings per common share: $ 0.45 $ 0.42 $ 1.63 $ 1.34 For the three months ended September 30, 2023, 639 thousand shares of unvested restricted stock and 49 thousand options outstanding were anti-dilutive and therefore excluded from the earnings per share calculation. For the nine months ended September 30, 2023, 569 thousand shares of unvested restricted stock and 49 thousand options outstanding were anti-dilutive and therefore excluded from the earnings per share calculation. For the three months ended September 30, 2022, 440 thousand shares of unvested restricted stock and 68 thousand options outstanding were anti-dilutive and therefore excluded from the earnings per share calculation. For the nine months ended September 30, 2022, 448 thousand shares of unvested restricted stock and 69 thousand options outstanding were anti-dilutive and therefore excluded from the earnings per share calculation.

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS	9 Months Ended
	Sep. 30, 2023
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 nine months ended September 30, 2023 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, 2022 704 $ 22.85 49 $ 26.46 Granted 400 26.87 — — Acquired — — — — Stock options exercised — — — — Stock awards vested (236) 20.91 — — Forfeited (72) 25.48 — — Expired — — — — September 30, 2023 796 $ 24.92 49 $ 26.46

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023 and December 31, 2022, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value. September 30, 2023 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading securities $ — $ — $ 6,171 $ 6,171 Securities available for sale: U.S Treasuries 7,873 — — 7,873 Municipal bonds and obligations — 58,694 — 58,694 Agency collateralized mortgage obligations — 460,356 — 460,356 Agency residential mortgage-backed securities — 483,201 — 483,201 Agency commercial mortgage-backed securities — 211,371 — 211,371 Corporate bonds — 34,280 3,960 38,240 Other bonds and obligations — 656 — 656 Equity securities 12,325 — — 12,325 Loans held for investment at fair value — — 408 408 Loans held for sale — 2,342 — 2,342 Derivative assets — 64,151 10 64,161 Capitalized servicing rights — — 1,706 1,706 Derivative liabilities — 116,594 9 116,603 December 31, 2022 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading securities $ — $ — $ 6,708 $ 6,708 Securities available for sale: U.S Treasuries 11,973 — — 11,973 Municipal bonds and obligations — 63,335 — 63,335 Agency collateralized mortgage obligations — 531,945 — 531,945 Agency residential mortgage-backed securities — 546,313 — 546,313 Agency commercial mortgage-backed securities — 228,468 — 228,468 Corporate bonds — 36,510 4,000 40,510 Equity securities 12,856 — — 12,856 Loans held for investment at fair value — — 605 605 Loans held for sale — 942 — 942 Derivative assets — 54,216 25 54,241 Capitalized servicing rights — — 1,846 1,846 Derivative liabilities — 97,030 — 97,030 There were no transfers between levels during the three and nine months ended September 30, 2023. Trading Securities 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 SOFR rate. Securities Available for Sale and Equity Securities . 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. 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 1 consist of U.S. Treasury securities. 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 September 30, 2023. Aggregate Fair Value September 30, 2023 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 408 $ 9,064 $ (8,656) Aggregate Fair Value December 31, 2022 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 605 $ 10,948 $ (10,343) 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 September 30, 2023 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale $ 2,342 $ 2,312 $ 30 Aggregate Fair Value December 31, 2022 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale $ 942 $ 927 $ 15 The changes in fair value of loans held for sale for the three and nine months ended September 30, 2023, were losses of $94 thousand and gains of $15 thousand, respectively. During the three and nine months ended September 30, 2023, originations of loans held for sale totaled $26.8 million and $56.2 million, respectively. During the three and nine months ended September 30, 2023, sales of loans originated for sale totaled $33.1 million and $54.8 million, respectively. The changes in fair value of loans held for sale for the three and nine months ended September 30, 2022, were losses of $12 thousand and $173 thousand, respectively. During the three and nine months ended September 30, 2022, originations of loans held for sale totaled $6.0 million and $16.1 million, respectively. During the three and nine months ended September 30, 2022, sales of loans originated for sale totaled $6.5 million and $21.6 million, respectively. 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 September 30, 2023, 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 and nine months ended September 30, 2023 and 2022. Assets (Liabilities) Securities Loans Capitalized Trading Available Held for Commitments Forward Servicing (In thousands) Securities for Sale Investment to Lend Commitments Rights Three Months Ended September 30, 2023 June 30, 2023 $ 6,405 $ 3,930 $ 401 $ 37 $ 63 $ 1,886 Unrealized (loss)/gain, net recognized in other non-interest income (19) — 28 26 (53) (180) Unrealized gain included in accumulated other comprehensive income — 30 — — — — Paydown of asset (215) — (21) — — — Transfers to held for sale loans — — — (72) — — September 30, 2023 $ 6,171 $ 3,960 $ 408 $ (9) $ 10 $ 1,706 Nine Months Ended September 30, 2023 December 31, 2022 $ 6,708 $ 4,000 $ 605 $ 17 $ 8 $ 1,846 Unrealized (loss)/gain, net recognized in other non-interest income 104 — (119) 146 2 (140) Unrealized (loss) included in accumulated other comprehensive income — (40) — — — — Paydown of asset (641) — (78) — — — Transfers to held for sale loans — — — (172) — — September 30, 2023 $ 6,171 $ 3,960 $ 408 $ (9) $ 10 $ 1,706 Unrealized (loss)/gain relating to instruments still held at September 30, 2023 $ (251) $ (40) $ — $ (9) $ 10 $ — Assets (Liabilities) Securities Loans Capitalized Trading Available Held for Commitments Forward Servicing (In thousands) Securities for Sale Investment to Lend Commitments Rights Three Months Ended September 30, 2022 June 30, 2022 $ 7,040 $ 4,020 $ 1,049 $ 26 $ 18 $ 1,906 Unrealized (loss)/gain, net recognized in other non-interest income (23) — (6) 41 (11) 120 Unrealized gain included in accumulated other comprehensive income — (100) — — — — Paydown of asset (205) (247) — — — Transfers to held for sale loans — — — (52) — — September 30, 2022 $ 6,812 $ 3,920 $ 796 $ 15 $ 7 $ 2,026 Nine Months Ended September 30, 2022 December 31, 2021 $ 8,354 $ 4,030 $ 1,200 $ 124 $ 134 $ 1,966 Unrealized (loss)/gain, net recognized in other non-interest income (933) — 462 171 (127) 60 Unrealized (loss) included in accumulated other comprehensive income — (110) — — — — Paydown of asset (609) — (866) — — — Transfers to held for sale loans — — — (280) — — Additions to servicing rights — — 0 — — — September 30, 2022 $ 6,812 $ 3,920 $ 796 $ 15 $ 7 $ 2,026 Unrealized (loss)/gain relating to instruments still held at September 30, 2022 $ (459) $ (80) $ — $ 26 $ 18 $ — Quantitative information about the significant unobservable inputs within Level 3 recurring assets and liabilities is as follows: Fair Value Significant (In thousands) September 30, 2023 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading Securities $ 6,171 Discounted Cash Flow Discount Rate 5.14 % AFS Securities 3,960 Indication from Market Maker Price 99.00% Loans held for investment 408 Discounted Cash Flow Discount Rate 25.00 % Collateral Value $0.0 - $18.6 Commitments to lend (9) Historical Trend Closing Ratio 80.39 % Pricing Model Origination Costs, per loan $ 3 Forward commitments 10 Historical Trend Closing Ratio 80.39 % Pricing Model Origination Costs, per loan $ 3 Capitalized servicing rights 1,706 Discounted cash flow Constant Prepayment Rate (CPR) 8.62 % Discount Rate 10.58 % Total $ 12,246 Fair Value Significant (In thousands) December 31, 2022 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading Securities $ 6,708 Discounted Cash Flow Discount Rate 5.92 % AFS Securities 4,000 Indication from Market Maker Price 100.00 % Loans held for investment 605 Discounted Cash Flow Discount Rate 25.00 % Collateral Value $0.0- $20.4 Commitments to lend 17 Historical Trend Closing Ratio 80.63 % Pricing Model Origination Costs, per loan $ 2 Forward commitments 8 Historical Trend Closing Ratio 80.63 % Pricing Model Origination Costs, per loan $ 2 Capitalized servicing rights 1,846 Discounted Cash Flow Constant Prepayment Rate (CPR) 11.07 % Discount Rate 9.56 % Total $ 13,184 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. September 30, 2023 Fair Value Measurement Date December 31, 2022 Fair Value Measurement Date Level 3 Level 3 Level 3 Level 3 (In thousands) Inputs Inputs Inputs Inputs Assets Individually evaluated $ 5,676 September 2023 $ 14,571 December 2022 Loans held for sale — September 2023 3,369 December 2022 Capitalized servicing rights 10,850 September 2023 11,201 December 2022 Total $ 16,526 $ 29,141 Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets is as follows: Fair Value (In thousands) September 30, 2023 Valuation Techniques Unobservable Inputs Range (Weighted Average) (1) Assets Individually evaluated $ 5,676 Fair Value of Collateral Discounted Cash Flow - Loss Severity (100.00)% to (0.01)% (60.44%) Appraised Value $0 to $3,361 ($2,336) Capitalized servicing rights 10,850 Discounted Cash Flow Constant Prepayment Rate (CPR) 4.78% to 12.22% (11.70%) Discount Rate 9.59% to 19.71% (15.26%) Total $ 16,526 (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, 2022 Valuation Techniques Unobservable Inputs Range (Weighted Average) (1) Assets Individually evaluated $ 14,571 Fair Value of Collateral Discounted Cash Flow - loss severity (100.00)% to 74.74% ((40.02)%) Appraised Value $0 to $2,160 ($643) Loans held for sale 3,369 Fair Value of Collateral Appraised Value $3,369 Capitalized servicing rights 11,201 Discounted Cash Flow Constant Prepayment Rate (CPR) 5.81% to 13.18% (10.94%) Discount Rate 9.59% to 22.70% (16.83%) Total $ 29,141 (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 September 30, 2023 and December 31, 2022. 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. Loans Transferred to Held for Sale. Once a decision has been made to sell loans not previously classified as held for sale, these loans are transferred into the held for sale category and carried at the lower of cost or fair value. 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. 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. 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. September 30, 2023 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 663,470 $ 663,470 $ 663,470 $ — $ — Trading securities 6,171 6,171 — — 6,171 Equity securities 12,325 12,325 12,325 — — Securities available for sale 1,260,391 1,260,391 7,873 1,248,558 3,960 Securities held to maturity 552,981 453,729 — 452,178 1,551 Federal Home Loan Bank stock 38,912 N/A N/A N/A N/A Net loans 8,881,585 8,757,345 — — 8,757,345 Loans held for sale 2,342 2,342 — 2,342 — Accrued interest receivable 52,669 52,669 — 52,669 — Derivative assets 64,161 64,161 — 64,151 10 Financial Liabilities Total deposits $ 9,980,544 $ 9,951,662 $ — $ 9,947,373 $ — Short-term debt 670,000 669,981 — 669,981 — Long-term Federal Home Loan Bank advances and other 134,295 129,182 — 129,182 — Subordinated borrowings 121,300 94,192 — 94,192 — Accrued interest payable 12,794 12,794 — 12,794 — Derivative liabilities 116,603 116,603 — 116,594 9 December 31, 2022 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 685,355 $ 685,355 $ 685,355 $ — $ — Trading securities 6,708 6,708 — — 6,708 Equity securities 12,856 12,856 12,856 — — Securities available for sale and other 1,423,200 1,423,200 11,973 1,407,227 4,000 Securities held to maturity 583,453 507,464 — 505,508 1,956 Federal Home Loan Bank stock 7,219 N/A N/A N/A N/A Net loans 8,239,039 8,194,110 — — 8,194,110 Loans held for sale 4,311 4,311 — 942 3,369 Accrued interest receivable 46,868 46,868 — 46,868 — Derivative assets 54,241 54,241 — 54,216 25 Financial Liabilities Total deposits $ 10,327,269 $ 10,283,543 $ — $ 10,283,543 $ — Short-term debt — — — — — Long-term Federal Home Loan Bank advances 4,445 2,782 — 2,782 — Subordinated borrowings 121,064 110,853 — 110,853 — Accrued interest payable 1,610 1,610 — 1,610 — Derivative liabilities 97,030 97,030 — 97,030 —

NET INTEREST INCOME AFTER PROVI

NET INTEREST INCOME AFTER PROVISION/(BENEFIT) FOR CREDIT LOSSES	9 Months Ended
	Sep. 30, 2023
Banking and Thrift, Interest [Abstract]
NET INTEREST INCOME AFTER PROVISION/(BENEFIT) FOR CREDIT LOSSES	NET INTEREST INCOME AFTER PROVISION/(BENEFIT) FOR CREDIT LOSSES Presented below is net interest income after provision for credit losses for the three and nine months ended September 30, 2023 and 2022, respectively. Three Months Ended September 30, Nine Months Ended September 30, (In thousands) 2023 2022 2023 2022 Net interest income $ 90,334 $ 92,084 $ 280,626 $ 242,505 Provision/(benefit) for credit losses 8,000 3,000 24,999 (1,000) Net interest after provision for credit losses $ 82,334 $ 89,084 $ 255,627 $ 243,505

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net income	$ 19,545	$ 18,717	$ 71,043	$ 62,028

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

BASIS OF PRESENTATION (Policies

BASIS OF PRESENTATION (Policies)	9 Months Ended
	Sep. 30, 2023
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. 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, 2022. In management’s opinion, all adjustments necessary for a fair statement are reflected in the interim periods.
Reclassifications	Reclassifications Certain items in prior financial statements have been reclassified to conform to the current presentation.
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 Effective January 1, 2023, the Company adopted ASU No. 2022-02, “Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures.” The adoption did not have a material impact on the Company’s Consolidated Financial Statements. The ASU eliminates the troubled debt restructuring (“TDR”) accounting model that was adopted with Topic 326, “Financial Instruments – Credit Losses” and enhances disclosure requirements for certain loan refinancings and restructurings when a borrower is experiencing financial difficulty. The ASU requires prospective disclosure of current-period gross write-offs by year of origination. Refer to Note 4 – Loans and Allowance for Credit Losses for the new financial statement disclosures applicable under this update. Future Application of Accounting Pronouncements In March 2023, the FASB issued ASU No. 2023-02, “Investments – Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using the Proportional Amortization Method (a consensus of the Emerging Issues Task Force).” The guidance is intended to improve the accounting and disclosures for investments in tax credit structures. The ASU allows entities to elect to account for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. Previously, this method was only available for qualifying investments in low-income housing tax credit structures. The amendments in this ASU are effective for fiscal years beginning after December 15, 2023, and interim periods within those fiscal years. Early adoption is permitted. The Company is still evaluating; however, the adoption is not expected to have a material impact on the Company’s Consolidated Financial Statements.

SECURITIES AVAILABLE FOR SALE_2

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND EQUITY SECURITIES (Tables)	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Schedule 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 September 30, 2023 Securities available for sale U.S Treasuries $ 7,873 $ — $ — $ 7,873 Municipal bonds and obligations 65,397 — (6,703) 58,694 — Agency collateralized mortgage obligations 570,205 — (109,849) 460,356 — Agency mortgage-backed securities 595,518 — (112,317) 483,201 — Agency commercial mortgage-backed securities 255,891 — (44,520) 211,371 — Corporate bonds 43,312 59 (5,131) 38,240 — Other bonds and obligations 655 67 (66) 656 — Total securities available for sale 1,538,851 126 (278,586) 1,260,391 — Securities held to maturity Municipal bonds and obligations 255,888 33 (36,047) 219,874 48 Agency collateralized mortgage obligations 116,267 — (22,592) 93,675 — Agency mortgage-backed securities 48,196 — (10,839) 37,357 — Agency commercial mortgage-backed securities 130,705 — (29,721) 100,984 — Tax advantaged economic development bonds 1,637 6 (92) 1,551 21 Other bonds and obligations 288 — — 288 — Total securities held to maturity 552,981 39 (99,291) 453,729 69 Equity securities 15,035 — (2,710) 12,325 — Total $ 2,106,867 $ 165 $ (380,587) $ 1,726,445 $ 69 (In thousands) Amortized Cost Gross Gross Fair Value Allowance December 31, 2022 Securities available for sale U.S Treasuries $ 11,972 $ 1 $ — $ 11,973 $ — Municipal bonds and obligations 65,943 422 (3,030) 63,335 — Agency collateralized mortgage obligations 631,732 — (99,787) 531,945 — Agency mortgage-backed securities 643,308 1 (96,996) 546,313 — Agency commercial mortgage-backed securities 264,218 — (35,750) 228,468 — Corporate bonds 43,368 80 (2,938) 40,510 — Other bonds and obligations 655 67 (66) 656 — Total securities available for sale 1,661,196 571 (238,567) 1,423,200 — Securities held to maturity Municipal bonds and obligations 266,793 691 (23,704) 243,780 66 Agency collateralized mortgage obligations 128,136 — (20,420) 107,716 — Agency mortgage-backed securities 50,958 — (9,240) 41,718 — Agency commercial mortgage-backed securities 135,206 — (23,203) 112,003 — Tax advantaged economic development bonds 2,069 8 (121) 1,956 25 Other bonds and obligations 291 — — 291 — Total securities held to maturity 583,453 699 (76,688) 507,464 91 Equity securities 15,035 — (2,179) 12,856 — Total $ 2,259,684 $ 1,270 $ (317,434) $ 1,943,520 $ 91
Schedule of 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 and nine months ended September 30, 2023 and 2022: (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at June, 2023 $ 49 $ 22 $ 71 (Benefit)/provision for credit losses (1) (1) (2) Balance at September 30, 2023 $ 48 $ 21 $ 69 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at June 30, 2022 $ 66 $ 28 $ 94 (Benefit)/provision for credit losses 1 — 1 Balance at September 30, 2022 $ 67 $ 28 $ 95 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2022 $ 66 $ 25 $ 91 (Benefit)/provision for credit losses (18) (4) (22) Balance at September 30, 2023 $ 48 $ 21 $ 69 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2021 $ 70 $ 35 $ 105 (Benefit)/provision for credit losses (3) (7) (10) Balance at September 30, 2022 $ 67 $ 28 $ 95
Schedule of Amortized Cost and 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 September 30, 2023 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 $ 8,693 $ 8,692 $ 822 $ 822 Over 1 year to 5 years 11,291 11,068 1,683 1,667 Over 5 years to 10 years 54,720 48,694 36,012 34,653 Over 10 years 42,533 37,009 219,296 184,571 Total bonds and obligations 117,237 105,463 257,813 221,713 Mortgage-backed securities 1,421,614 1,154,928 295,168 232,016 Total $ 1,538,851 $ 1,260,391 $ 552,981 $ 453,729
Schedule of Securities with Unrealized Losses, Segregated by the Duration of their Continuous Unrealized Loss Positions	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 September 30, 2023 Securities available for sale Municipal bonds and obligations $ 2,779 $ 37,869 $ 3,924 $ 20,200 $ 6,703 $ 58,069 Agency collateralized mortgage obligations — — 109,849 460,356 109,849 460,356 Agency mortgage-backed securities 6 285 112,311 482,909 112,317 483,194 Agency commercial mortgage-backed securities — — 44,520 211,362 44,520 211,362 Corporate bonds 441 7,809 4,690 29,523 5,131 37,332 Other bonds and obligations — — 66 295 66 295 Total securities available for sale $ 3,226 $ 45,963 $ 275,360 $ 1,204,645 $ 278,586 $ 1,250,608 Securities held to maturity Municipal bonds and obligations $ 7,986 $ 128,129 $ 28,061 $ 80,778 $ 36,047 $ 208,907 Agency collateralized mortgage obligations 1 21 22,591 93,654 22,592 93,675 Agency mortgage-backed securities — — 10,839 37,357 10,839 37,357 Agency commercial mortgage-backed securities — — 29,721 100,984 29,721 100,984 Tax advantaged economic development bonds — — 92 927 92 927 Total securities held to maturity 7,987 128,150 91,304 313,700 99,291 441,850 Total $ 11,213 $ 174,113 $ 366,664 $ 1,518,345 $ 377,877 $ 1,692,458 December 31, 2022 Securities available for sale Municipal bonds and obligations $ 2,406 $ 36,696 $ 624 $ 2,763 $ 3,030 $ 39,459 Agency collateralized mortgage obligations 23,052 247,509 76,735 284,434 99,787 531,943 Agency mortgage-backed securities 3,124 37,540 93,872 508,683 96,996 546,223 Agency commercial mortgage-backed securities 9,885 96,396 25,865 132,043 35,750 228,439 Corporate bonds 1,709 25,657 1,229 9,929 2,938 35,586 Other bonds and obligations — — 66 295 66 295 Total securities available for sale $ 40,176 $ 443,798 $ 198,391 $ 938,147 $ 238,567 $ 1,381,945 Securities held to maturity Municipal bonds and obligations $ 5,476 $ 125,494 $ 18,228 $ 38,341 $ 23,704 $ 163,835 Agency collateralized mortgage obligations 2,734 49,539 17,686 58,177 20,420 107,716 Agency mortgage-backed securities 300 2,419 8,940 39,299 9,240 41,718 Agency commercial mortgage-backed securities 447 9,713 22,756 102,290 23,203 112,003 Tax advantaged economic development bonds 1 142 120 1,008 121 1,150 Total securities held to maturity 8,958 187,307 67,730 239,115 76,688 426,422 Total $ 49,134 $ 631,105 $ 266,121 $ 1,177,262 $ 315,255 $ 1,808,367

LOANS AND ALLOWANCE FOR CREDI_2

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables)	9 Months Ended
	Sep. 30, 2023
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) September 30, 2023 December 31, 2022 Construction $ 561,691 $ 319,452 Commercial multifamily 602,120 620,088 Commercial real estate owner occupied 658,189 640,489 Commercial real estate non-owner occupied 2,605,823 2,496,237 Commercial and industrial 1,363,771 1,445,236 Residential real estate 2,729,411 2,312,447 Home equity 227,052 227,450 Consumer other 236,320 273,910 Total loans $ 8,984,377 $ 8,335,309 Allowance for credit losses (102,792) (96,270) Net loans $ 8,881,585 $ 8,239,039
Schedule of Allowance for Credit Losses for Loans, Activity	The Company’s activity in the allowance for credit losses for loans for the three and nine months ended September 30, 2023 and September 30, 2022 was as follows: (In thousands) Balance at Beginning of Period Adoption of ASU No. 2022-02 Charge-offs Recoveries Provision/(Benefit) for Credit Losses Balance at End of Period Three months ended September 30, 2023 Construction $ 1,553 $ — $ — $ — $ 1,949 $ 3,502 Commercial multifamily 2,066 — — — 339 2,405 Commercial real estate owner occupied 10,343 — (25) 116 (979) 9,455 Commercial real estate non-owner occupied 36,322 — (1) 20 (3,059) 33,282 Commercial and industrial 18,741 — (3,997) 617 3,158 18,519 Residential real estate 18,218 — (72) 92 1,766 20,004 Home equity 2,572 — (71) 278 (677) 2,102 Consumer other 10,404 — (2,578) 192 5,505 13,523 Total allowance for credit losses $ 100,219 $ — $ (6,744) $ 1,315 $ 8,002 $ 102,792 (In thousands) Balance at Beginning of Period Charge-offs Recoveries Provision/(Benefit) for Credit Losses Balance at End of Period Three months ended September 30, 2022 Construction $ 1,710 $ — $ — $ (479) $ 1,231 Commercial multifamily 4,621 (94) 112 (2,919) 1,720 Commercial real estate owner occupied 10,687 (176) 256 (582) 10,185 Commercial real estate non-owner occupied 26,166 (1,012) 153 4,114 29,421 Commercial and industrial 22,914 (5,545) 616 650 18,635 Residential real estate 16,411 (102) 131 3,398 19,838 Home equity 2,828 (9) 9 (407) 2,421 13,684 (486) 140 (776) 12,562 Total allowance for credit losses $ 99,021 $ (7,424) $ 1,417 $ 2,999 $ 96,013 (In thousands) Balance at Beginning of Period Adoption of ASU No. 2022-02 Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Nine months ended September 30, 2023 Construction $ 1,227 $ — $ (1) $ — $ 2,276 $ 3,502 Commercial multifamily 1,810 — — 6 589 2,405 Commercial real estate owner occupied 10,739 24 (489) 758 (1,577) 9,455 Commercial real estate non-owner occupied 30,724 — (1) 195 2,364 33,282 Commercial and industrial 18,743 (23) (14,625) 1,736 12,688 18,519 Residential real estate 18,666 2 (313) 555 1,094 20,004 Home equity 2,173 — (88) 437 (420) 2,102 Consumer other 12,188 (404) (6,848) 580 8,007 13,523 Total allowance for credit losses $ 96,270 $ (401) $ (22,365) $ 4,267 $ 25,021 $ 102,792 (In thousands) Balance at Beginning of Period Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Nine months ended September 30, 2022 Construction $ 3,206 $ — $ — $ (1,975) $ 1,231 Commercial multifamily 6,120 (94) 112 (4,418) 1,720 Commercial real estate owner occupied 12,752 (603) 562 (2,526) 10,185 Commercial real estate non-owner occupied 32,106 (5,895) 1,464 1,746 29,421 Commercial and industrial 22,584 (6,951) 2,485 517 18,635 Residential real estate 22,406 (480) 719 (2,807) 19,838 Home equity 4,006 (9) 255 (1,831) 2,421 Consumer other 2,914 (1,031) 375 10,304 12,562 Total allowance for credit losses $ 106,094 $ (15,063) $ 5,972 $ (990) $ 96,013
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 and nine months ended September 30, 2023 and 2022 was as follows: Three Months Ended (In thousands) 2023 2022 Balance at beginning of period $ 8,687 $ 7,043 Expense for credit losses 300 700 Balance at end of period $ 8,987 $ 7,743 Nine Months Ended September 30, (In thousands) 2023 2022 Balance at beginning of period $ 8,588 $ 7,043 Expense for credit losses 399 700 Balance at end of period $ 8,987 $ 7,743
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) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of September 30, 2023 Construction Current period gross write-offs $ — $ — $ — $ — $ — $ 1 $ — $ — $ 1 Risk rating Pass $ 71,516 $ 301,236 $ 139,599 $ 29,177 $ 2,553 $ 564 $ — $ — $ 544,645 Special Mention — — 471 — — — — — 471 Substandard — — 16,575 — — — — — 16,575 Total $ 71,516 $ 301,236 $ 156,645 $ 29,177 $ 2,553 $ 564 $ — $ — $ 561,691 Commercial multifamily: Current period gross write-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Risk rating Pass $ 8,974 $ 217,062 $ 57,061 $ 27,126 $ 95,398 $ 187,225 $ 998 $ — $ 593,844 Special Mention — — — — — — — — — Substandard — — 244 2,573 — 5,459 — — 8,276 Total $ 8,974 $ 217,062 $ 57,305 $ 29,699 $ 95,398 $ 192,684 $ 998 $ — $ 602,120 Commercial real estate owner occupied: Current period gross write-offs $ — $ — $ — $ 380 $ — $ 109 $ — $ — $ 489 Risk rating Pass $ 80,561 $ 123,110 $ 126,637 $ 68,938 $ 71,603 $ 173,060 $ 1,642 $ — $ 645,551 Special Mention — — — 387 885 2,447 — — 3,719 Substandard — 11 81 47 4,141 4,639 — — 8,919 Total $ 80,561 $ 123,121 $ 126,718 $ 69,372 $ 76,629 $ 180,146 $ 1,642 $ — $ 658,189 Commercial real estate non-owner occupied: Current period gross write-offs $ — $ — $ — $ — $ 1 $ — $ — $ — $ 1 Risk rating Pass $ 349,765 $ 584,973 $ 386,493 $ 141,534 $ 279,849 $ 767,366 $ 18,312 $ — $ 2,528,292 Special Mention — — — — 27,219 12,806 — — 40,025 Substandard — — — 6,923 5,879 24,704 — — 37,506 Total $ 349,765 $ 584,973 $ 386,493 $ 148,457 $ 312,947 $ 804,876 $ 18,312 $ — $ 2,605,823 Commercial and industrial: Current period gross write-offs $ — $ 700 $ 645 $ 2,158 $ 1,429 $ 7,380 $ 2,313 $ — $ 14,625 Risk rating Pass $ 100,443 $ 234,213 $ 124,139 $ 49,315 $ 43,656 $ 129,863 $ 596,559 $ — $ 1,278,188 Special Mention 1,801 3,323 4,829 2,111 633 1,574 17,575 — 31,846 Substandard 460 915 9,060 1,542 5,353 17,823 17,058 — 52,211 Doubtful — — — — — — 1,526 — 1,526 Total $ 102,704 $ 238,451 $ 138,028 $ 52,968 $ 49,642 $ 149,260 $ 632,718 $ — $ 1,363,771 Term Loans Amortized Cost Basis by Origination Year (In thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Residential real estate Current period gross write-offs $ — $ 50 $ — $ 50 $ 174 $ 39 $ — $ — $ 313 Risk rating Pass $ 527,326 $ 986,269 $ 269,172 $ 91,540 $ 66,691 $ 774,516 $ 141 $ — $ 2,715,655 Special Mention — — — — 741 816 — — 1,557 Substandard — 132 1,024 379 1,361 9,303 — — 12,199 Total $ 527,326 $ 986,401 $ 270,196 $ 91,919 $ 68,793 $ 784,635 $ 141 $ — $ 2,729,411 Term Loans Amortized Cost Basis by Origination Year (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of December 31, 2022 Construction Risk rating Pass $ 153,393 $ 133,708 $ 25,634 $ 3,432 $ 1,361 $ 1,924 $ — $ — $ 319,452 Special Mention — — — — — — — — — Substandard — — — — — — — — — Total $ 153,393 $ 133,708 $ 25,634 $ 3,432 $ 1,361 $ 1,924 $ — $ — $ 319,452 Commercial multifamily: Risk rating Pass $ 205,124 $ 61,032 $ 27,583 $ 100,696 $ 67,675 $ 149,633 $ 205 $ — $ 611,948 Special Mention — — 2,628 — — — — — 2,628 Substandard — — — — 5,512 — — — 5,512 Total $ 205,124 $ 61,032 $ 30,211 $ 100,696 $ 73,187 $ 149,633 $ 205 $ — $ 620,088 Commercial real estate owner occupied: Risk rating Pass $ 131,096 $ 127,270 $ 58,835 $ 82,576 $ 75,322 $ 154,056 $ 3,464 $ — $ 632,619 Special Mention — — 387 — — — — — 387 Substandard 1,003 122 31 282 1,056 4,989 — — 7,483 Total $ 132,099 $ 127,392 $ 59,253 $ 82,858 $ 76,378 $ 159,045 $ 3,464 $ — $ 640,489 Commercial real estate non-owner occupied: Risk rating Pass $ 621,685 $ 410,359 $ 175,456 $ 333,783 $ 313,124 $ 530,322 $ 17,846 $ — $ 2,402,575 Special Mention — — — — 20,000 18,462 — — 38,462 Substandard — — 7,237 13,623 15,610 18,730 — — 55,200 Total $ 621,685 $ 410,359 $ 182,693 $ 347,406 $ 348,734 $ 567,514 $ 17,846 $ — $ 2,496,237 Commercial and industrial: Risk rating Pass $ 282,781 $ 147,070 $ 56,880 $ 67,975 $ 83,223 $ 99,367 $ 648,956 $ — $ 1,386,252 Special Mention — 5,811 1,290 1,332 11,502 912 2,632 — 23,479 Substandard 204 496 3,640 8,139 1,981 2,799 10,581 — 27,840 Doubtful — — — — — 56 7,609 — 7,665 Total $ 282,985 $ 153,377 $ 61,810 $ 77,446 $ 96,706 $ 103,134 $ 669,778 $ — $ 1,445,236 Residential real estate Risk rating Pass $ 997,981 $ 280,308 $ 96,548 $ 70,845 $ 138,894 $ 713,744 $ 165 $ — $ 2,298,485 Special Mention — 364 — 861 202 707 — — 2,134 Substandard — 284 448 267 1,857 8,972 — — 11,828 Total $ 997,981 $ 280,956 $ 96,996 $ 71,973 $ 140,953 $ 723,423 $ 165 $ — $ 2,312,447 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) 2023 2022 2021 2020 2019 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of September 30, 2023 Home equity: Current period gross write-offs $ — $ — $ — $ 70 $ — $ — $ 18 $ — $ 88 Payment performance Performing $ — $ — $ — $ 443 $ — $ 2,615 $ 222,691 $ — $ 225,749 Nonperforming — — — — — — 1,303 — 1,303 Total $ — $ — $ — $ 443 $ — $ 2,615 $ 223,994 $ — $ 227,052 Consumer other: Current period gross write-offs $ 65 $ 5,729 $ 804 $ 11 $ 44 $ 195 $ — $ — $ 6,848 Payment performance Performing $ 40,770 $ 121,690 $ 21,794 $ 6,468 $ 8,261 $ 26,015 $ 10,561 $ — $ 235,559 Nonperforming 17 116 60 29 139 386 14 — 761 Total $ 40,787 $ 121,806 $ 21,854 $ 6,497 $ 8,400 $ 26,401 $ 10,575 $ — $ 236,320 Term Loans Amortized Cost Basis by Origination Year (In thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of December 31, 2022 Home equity: Payment performance Performing $ — $ 114 $ 454 $ — $ — $ 17 $ 224,746 $ — $ 225,331 Nonperforming — — — — — — 2,119 — 2,119 Total $ — $ 114 $ 454 $ — $ — $ 17 $ 226,865 $ — $ 227,450 Consumer other: Payment performance Performing $ 161,157 $ 28,279 $ 8,312 $ 12,670 $ 27,608 $ 24,682 $ 9,070 $ — $ 271,778 Nonperforming 588 137 44 280 477 567 39 — 2,132 Total $ 161,745 $ 28,416 $ 8,356 $ 12,950 $ 28,085 $ 25,249 $ 9,109 $ — $ 273,910 The following table summarizes information about total loans rated Special Mention or lower at September 30, 2023 and December 31, 2022. The table below includes consumer loans that are Special Mention and Substandard accruing that are classified as performing based on payment activity. (In thousands) September 30, 2023 December 31, 2022 Non-Accrual $ 26,636 $ 31,114 Substandard Accruing 114,252 88,665 Total Classified 140,888 119,779 Special Mention 79,258 68,127 Total Criticized $ 220,146 $ 187,906
Schedule of Past Due Loans	The following is a summary of loans by past due status at September 30, 2023 and December 31, 2022: (In thousands) 30-59 Days Past Due 60-89 Days Past Due 90 Days or Greater Past Due Total Past Due Current Total Loans September 30, 2023 Construction $ — $ — $ — $ — $ 561,691 $ 561,691 Commercial multifamily 5,853 — — 5,853 596,267 602,120 Commercial real estate owner occupied 334 599 1,423 2,356 655,833 658,189 Commercial real estate non-owner occupied 240 132 4,010 4,382 2,601,441 2,605,823 Commercial and industrial 1,263 267 11,086 12,616 1,351,155 1,363,771 Residential real estate 3,988 1,557 12,170 17,715 2,711,696 2,729,411 Home equity 688 26 1,616 2,330 224,722 227,052 Consumer other 2,111 1,642 2,076 5,829 230,491 236,320 Total $ 14,477 $ 4,223 $ 32,381 $ 51,081 $ 8,933,296 $ 8,984,377 (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, 2022 Construction $ — $ — $ — $ — $ 319,452 $ 319,452 Commercial multifamily — 214 — 214 619,874 620,088 Commercial real estate owner occupied 122 — 3,302 3,424 637,065 640,489 Commercial real estate non-owner occupied 143 — 191 334 2,495,903 2,496,237 Commercial and industrial 1,173 1,438 18,658 21,269 1,423,967 1,445,236 Residential real estate 3,694 2,134 11,724 17,552 2,294,895 2,312,447 Home equity 168 57 2,119 2,344 225,106 227,450 Consumer other 1,990 1,028 2,158 5,176 268,734 273,910 Total $ 7,290 $ 4,871 $ 38,152 $ 50,313 $ 8,284,996 $ 8,335,309
Schedule 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 September 30, 2023 and December 31, 2022: (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 September 30, 2023 Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied 1,212 257 211 — Commercial real estate non-owner occupied 4,010 52 — — Commercial and industrial 10,982 8,271 104 — Residential real estate 8,368 4,678 3,802 — Home equity 1,303 442 313 — Consumer other 761 — 1,315 — Total $ 26,636 $ 13,700 $ 5,745 $ — The commercial and industrial loans nonaccrual amortized cost as of September 30, 2023 included medallion loans with a fair value of $0.4 million and a contractual balance of $9.1 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, 2022 Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied 2,202 1,411 1,100 — Commercial real estate non-owner occupied 191 73 — — Commercial and industrial 16,992 14,223 1,666 — Residential real estate 8,901 5,307 2,823 — Home equity 1,568 388 551 — Consumer other 1,260 2 898 — Total $ 31,114 $ 21,404 $ 7,038 $ —
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 September 30, 2023 Construction $ — $ — $ — Commercial multifamily — — Commercial real estate owner occupied 633 — — Commercial real estate non-owner occupied 352 — — Commercial and industrial 4,813 — 3,420 Residential real estate 6,951 — — Home equity 458 — — Consumer other 42 — — Total loans $ 13,249 $ — $ 3,420 December 31, 2022 Construction $ — $ — $ — Commercial multifamily — — — Commercial real estate owner occupied 2,793 — — Commercial real estate non-owner occupied 384 — — Commercial and industrial 288 — 16,931 Residential real estate 3,910 — — Home equity 501 — — Consumer other 2 — — Total loans $ 7,878 $ — $ 16,931
Financing Receivable, Modified	The following table presents the amortized cost basis of loans at September 30, 2023 that were both experiencing financial difficulty and modified during the three and nine months ended September 30, 2023, by class and by type of modification. The percentage of the amortized cost basis of loans that were modified to borrowers in financial distress as compared to the amortized cost basis of each class of financing receivable is also presented below: (In thousands) Principal Forgiveness Payment Delay Term Extension Interest Rate Reduction Combination Term Extension and Principal Forgiveness Combination Term Extension and Interest Rate Reduction Total Class of Financing Receivable Three months ended September 30, 2023 Construction $ — $ — $ — $ — $ — $ — — % Commercial multifamily — — — — — — — Commercial real estate owner occupied — — — — — — — Commercial real estate non-owner occupied — — — — — — Commercial and industrial — 34 6,240 — — — 0.46 % Residential real estate — — — — — — — Home equity — — — — — — — Consumer other — — — — — — — Total $ — $ 34 $ 6,240 $ — $ — $ — 0.07 % (In thousands) Principal Forgiveness Payment Delay Term Extension Interest Rate Reduction Combination Term Extension and Principal Forgiveness Combination Term Extension and Interest Rate Reduction Total Class of Financing Receivable Nine months ended September 30, 2023 Construction $ — $ — $ — $ — $ — $ — — % Commercial multifamily — — — — — — — Commercial real estate owner occupied — 387 — — — — 0.06 Commercial real estate non-owner occupied — — 11,733 — — — 0.85 Commercial and industrial — 34 7,531 — 10 — 0.56 Residential real estate — — — — — — — Home equity — — — — — — — Consumer other — — — — — — — Total $ — $ 421 $ 19,264 $ — $ 10 $ — 0.22 % The following table presents the financial effect of the loan modifications presented above to borrowers experiencing financial difficulty for the three and nine months ended September 30, 2023: (In thousands) Principal Forgiveness Weighted Average Interest Rate Reduction Weighted Average Term Extension (months) Three months ended September 30, 2023 Construction $ — — % 0 Commercial multifamily — — 0 Commercial real estate owner occupied — — 0 Commercial real estate non-owner occupied — — 0 Commercial and industrial — — 17 Residential real estate — — 0 Home equity — — 0 Consumer other — — 0 (In thousands) Principal Forgiveness Weighted Average Interest Rate Reduction Weighted Average Term Extension (months) Nine months ended September 30, 2023 Construction $ — — % 0 Commercial multifamily — — 0 Commercial real estate owner occupied — — 120 Commercial real estate non-owner occupied — — 12 Commercial and industrial — 1.00 34 Residential real estate — — 0 Home equity — — 0 Consumer other — — 0

DEPOSITS (Tables)

DEPOSITS (Tables)	9 Months Ended
	Sep. 30, 2023
Deposits [Abstract]
Schedule of Time Deposits	A summary of time deposits is as follows: (In thousands) September 30, December 31, Time less than $100,000 $ 666,406 $ 549,265 Time $100,000 through $250,000 1,158,816 642,600 Time more than $250,000 620,213 441,842 Total time deposits $ 2,445,435 $ 1,633,707

BORROWED FUNDS (Tables)

BORROWED FUNDS (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Schedule of Borrowed Funds	Borrowed funds at September 30, 2023 and December 31, 2022 are summarized as follows: September 30, 2023 December 31, 2022 Weighted Weighted Average Average (Dollars in thousands) Principal Rate Principal Rate Short-term debt: Advances from the FHLB $ 670,000 5.57 % $ — — % Total short-term borrowings: 670,000 5.57 — — Long-term debt: Advances from the FHLB and other borrowings 134,295 4.06 4,445 0.71 Subordinated borrowings 98,286 5.50 98,089 5.50 Junior subordinated borrowing - Trust I 15,464 7.49 15,464 6.54 Junior subordinated borrowing - Trust II 7,550 7.37 7,511 6.47 Total long-term borrowings: 255,595 4.92 125,509 5.52 Total $ 925,595 5.39 % $ 125,509 5.52 %
Schedule of Maturities of FHLBB Advances	A summary of maturities of FHLB advances as of September 30, 2023 is as follows: September 30, 2023 Weighted Average (In thousands, except rates) Principal Rate Fixed rate advances maturing: 2023 $ 660,000 5.57 % 2024 40,014 5.05 2025 40,000 4.55 2026 30,530 3.68 2027 and beyond 33,751 3.07 Total FHLB advances $ 804,295 5.32 %

DERIVATIVE FINANCIAL INSTRUME_2

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES (Tables)	9 Months Ended
	Sep. 30, 2023
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 September 30, 2023, follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on commercial loans (1) $ 600,000 2.1 3.64 % 5.32 % $ 841 Interest rate collars on commercial loans 200,000 2.8 105 Total cash flow hedges 800,000 946 Economic hedges: Interest rate swap on tax advantaged economic development bond $ 6,421 6.2 4.96 % 5.09 % $ (30) Interest rate swaps on loans with commercial loan customers 1,788,086 5.0 4.30 % 6.42 % (117,048) Offsetting interest rate swaps on loans with commercial loan customers (1) 1,788,086 5.0 6.42 % 4.30 % 63,705 Risk participation agreements with dealer banks 377,852 5.7 (16) Forward sale commitments 2,312 0.2 10 Total economic hedges 3,962,757 (53,379) Non-hedging derivatives: Commitments to lend 6,409 0.2 (9) Total non-hedging derivatives 6,409 (9) Total $ 4,769,166 $ (52,442) (1) Fair value estimates include the impact of $38.5 million settled to market contract agreements. Information about derivative assets and liabilities at December 31, 2022, follows: Weighted Weighted Average Rate Estimated Notional Average Contract Fair Value Amount Maturity Received pay rate Asset (Liability) (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on commercial loans $ 400,000 2.7 4.09 % 3.51 % $ — Forward-starting interest rate swaps on commercial loans 200,000 3.3 — % 3.90 % — Interest rate collars on commercial loans 200,000 3.5 1,937 800,000 1,937 Economic hedges: Interest rate swap on tax advantaged economic development bond $ 7,062 6.9 4.49 % 5.09 % $ (193) Interest rate swaps on loans with commercial loan customers 1,685,263 5.7 4.11 % 5.55 % (95,114) Offsetting interest rate swaps on loans with commercial loan customers (1) 1,685,263 5.7 5.55 % 4.11 % 50,267 Risk participation agreements with dealer banks 341,885 6.6 (89) Forward sale commitments 927 0.2 8 Total economic hedges 3,720,400 (45,121) Non-hedging derivatives: Commitments to lend 4,114 0.2 17 Total non-hedging derivatives 4,114 17 Total $ 4,524,514 $ (43,167) (1) Fair value estimates include the impact of $38.3 million settled to market contract agreements.
Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss)	Amounts included in the Consolidated Statements of Income and in the other comprehensive income section of the Consolidated Statements of Comprehensive Income (related to interest rate derivatives designated as hedges of cash flows), were as follows: Three Months Ended Nine Months Ended September 30, (In thousands) 2023 2022 2023 2022 Interest rate swaps on commercial loans: Unrealized (loss) recognized in accumulated other comprehensive loss $ (2,800) $ (5,555) $ (8,599) $ (5,555) Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest expense (159) — (473) — Net tax benefit on items recognized in accumulated other comprehensive income 794 1,494 2,435 1,494 Other comprehensive loss recorded in accumulated other comprehensive income, net of reclassification adjustments and tax effects $ (2,165) $ (4,061) $ (6,637) $ (4,061) Net interest expense recognized on hedged commercial loans $ 2,621 $ (136) $ 6,262 $ (136)
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 September 30, Nine Months Ended September 30, (In thousands) 2023 2022 2023 2022 Economic hedges Interest rate swap on industrial revenue bond: Unrealized gain recognized in other non-interest income $ 88 $ 304 $ 163 $ 953 Interest rate swaps on loans with commercial loan customers: Unrealized (loss) recognized in other non-interest income (24,728) (53,788) (21,934) (177,413) Favorable change in credit valuation adjustment recognized in other non-interest income — — — 1,809 Offsetting interest rate swaps on loans with commercial loan customers: Unrealized gain recognized in other non-interest income 24,728 53,788 21,934 177,413 Risk participation agreements: Unrealized gain/(loss) recognized in other non-interest income 65 (19) 73 (419) Forward commitments: Unrealized (loss)/gain recognized in other non-interest income (53) (11) 2 (127) Non-hedging derivatives Commitments to lend Unrealized (loss) recognized in other non-interest income $ (46) $ (100) $ (26) $ (108) Realized gain in other non-interest income 210 78 304 420
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 September 30, 2023 Interest Rate Swap Agreements: Institutional counterparties $ 117,306 $ (53,346) $ 63,960 $ — $ — $ 63,960 Commercial counterparties 261 — 261 — — 261 Total $ 117,567 $ (53,346) $ 64,221 $ — $ — $ 64,221 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, 2022 Interest Rate Swap Agreements: Institutional counterparties $ 96,295 $ (45,046) $ 51,249 $ — $ — $ 51,249 Commercial counterparties 975 — 975 — — 975 Total $ 97,270 $ (45,046) $ 52,224 $ — $ — $ 52,224
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 September 30, 2023 Interest Rate Swap Agreements: Institutional counterparties $ (274) $ 2 $ (272) $ 9,676 $ — $ 9,404 Commercial counterparties (131,221) 14,857 (116,364) — — (116,364) Total $ (131,495) $ 14,859 $ (116,636) $ 9,676 $ — $ (106,960) 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, 2022 Interest Rate Swap Agreements: Institutional counterparties $ (1,271) $ 36 $ (1,235) $ 11,973 $ — $ 10,738 Commercial counterparties (102,595) 6,507 (96,088) — — (96,088) Total $ (103,866) $ 6,543 $ (97,323) $ 11,973 $ — $ (85,350)

LEASES (Tables)

LEASES (Tables)	9 Months Ended
	Sep. 30, 2023
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) September 30, 2023 December 31, 2022 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 48,173 $ 46,411 Finance lease right-of-use assets Premises and equipment, net 5,727 6,151 Total Lease Right-of-Use Assets $ 53,900 $ 52,562 Lease Liabilities Operating lease liabilities Other liabilities $ 54,128 $ 53,736 Finance lease liabilities Other liabilities 8,831 9,306 Total Lease Liabilities $ 62,959 $ 63,042
Schedule of Supplemental Cash Flow Information Related to Leases	Supplemental information related to leases was as follows: September 30, 2023 December 31, 2022 Weighted-Average Remaining Lease Term (in years) Operating leases 8.5 9.3 Finance leases 11.1 11.8 Weighted-Average Discount Rate Operating leases 2.85 % 2.56 % Finance leases 5.00 % 5.00 % Supplemental cash flow information related to leases was as follows: Three Months Ended (In thousands) September 30, 2023 September 30, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 2,267 $ 2,518 Operating cash flows from finance leases 112 119 Financing cash flows from finance leases 148 139 Nine Months Ended (In thousands) September 30, 2023 September 30, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 6,800 $ 7,657 Operating cash flows from finance leases 336 359 Financing cash flows from finance leases 443 414
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 September 30, 2023: (In thousands) Operating Leases Finance Leases 2023 $ 2,399 $ 260 2024 9,470 1,039 2025 8,259 1,039 2026 7,262 1,039 2027 6,383 1,039 Thereafter 26,594 7,075 Total undiscounted lease payments 60,367 11,491 Less amounts representing interest (6,239) (2,660) Lease liability $ 54,128 $ 8,831
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 September 30, 2023: (In thousands) Operating Leases Finance Leases 2023 $ 2,399 $ 260 2024 9,470 1,039 2025 8,259 1,039 2026 7,262 1,039 2027 6,383 1,039 Thereafter 26,594 7,075 Total undiscounted lease payments 60,367 11,491 Less amounts representing interest (6,239) (2,660) Lease liability $ 54,128 $ 8,831

CAPITAL RATIOS AND SHAREHOLDE_2

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY (Tables)	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Schedule of Actual and Required Capital Ratios	The actual and required capital ratios were as follows: September 30, December 31, Minimum Capital Requirement Company (consolidated) Total capital to risk-weighted assets 14.4 % 14.6 % 8.0 % Common equity tier 1 capital to risk-weighted assets 12.1 12.4 4.5 Tier 1 capital to risk-weighted assets 12.3 12.6 6.0 Tier 1 capital to average assets 9.8 10.2 4.0 September 30, December 31, Regulatory Minimum to be Adequately Capitalized Regulatory Bank Total capital to risk-weighted assets 13.4 % 13.6 % 8.0 % 10.0 % Common equity tier 1 capital to risk-weighted assets 12.4 12.6 4.5 6.5 Tier 1 capital to risk-weighted assets 12.4 12.6 6.0 8.0 Tier 1 capital to average assets 9.7 10.2 4.0 5.0
Schedule of Components of Accumulated Other Comprehensive Income (Loss)	Components of accumulated other comprehensive (loss) is as follows: (In thousands) September 30, December 31, Other accumulated comprehensive income, before tax: Net unrealized holding (loss) on AFS securities $ (278,285) $ (236,887) Net unrealized (loss) on cash flow hedging derivatives (15,739) (6,667) Net unrealized holding (loss) on pension plans (844) (844) Income taxes related to items of accumulated other comprehensive income: Net unrealized tax benefit on AFS securities 72,030 61,329 Net unrealized tax benefit on cash flow hedging derivatives 4,224 1,789 Net unrealized tax benefit on pension plans 228 228 Accumulated other comprehensive loss $ (218,386) $ (181,052)
Schedule of Components of Other Comprehensive Income (Loss)	The following table presents the components of other comprehensive (loss) for the three and nine months ended September 30, 2023 and 2022: (In thousands) Before Tax Tax Effect Net of Tax Three Months Ended September 30, 2023 Net unrealized holding loss on AFS securities: x Net unrealized (losses) arising during the period $ (40,525) $ 10,544 $ (29,981) Less: reclassification adjustment for gains realized in net income — — — Net unrealized holding gain on AFS securities (40,525) 10,544 (29,981) Net unrealized loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (3,118) 836 (2,282) Less: reclassification adjustment for (losses) realized in net income (159) 42 (117) Net unrealized loss on cash flow hedging derivatives (2,959) 794 (2,165) Other comprehensive (loss) $ (43,484) $ 11,338 $ (32,146) Three Months Ended September 30, 2022 Net unrealized holding loss on AFS securities: Net unrealized (losses) arising during the period $ (83,073) $ 21,639 $ (61,434) Less: reclassification adjustment for gains realized in net income — — — Net unrealized holding (loss) on AFS securities (83,073) 21,639 (61,434) Net unrealized loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (5,555) 1,494 (4,061) Less: reclassification adjustment for (losses) realized in net income — — — Net unrealized (loss) on cash flow hedging derivatives (5,555) 1,494 (4,061) Other comprehensive (loss) $ (88,628) $ 23,133 $ (65,495) (In thousands) Before Tax Tax Effect Net of Tax Nine Months Ended September 30, 2023 Net unrealized holding loss on AFS securities: Net unrealized (losses) arising during the period $ (41,398) $ 10,701 $ (30,697) Less: reclassification adjustment for gains realized in net income — — — Net unrealized holding (loss) on AFS securities (41,398) 10,701 (30,697) Net unrealized loss on cash flow hedging derivatives: Net unrealized (losses) arising during the period (9,545) 2,562 (6,983) Less: reclassification adjustment for (losses) realized in net income (473) 127 (346) Net unrealized loss on cash flow hedging derivatives (9,072) 2,435 (6,637) Other comprehensive (loss) $ (50,470) $ 13,136 $ (37,334) Nine Months Ended September 30, 2022 Net unrealized holding loss on AFS securities: Net unrealized (losses) arising during the period $ (244,927) $ 63,741 $ (181,186) Less: reclassification adjustment for gains realized in net income 6 (2) 4 Net unrealized holding (loss) on AFS securities (244,933) 63,743 (181,190) Net unrealized loss on cash flow hedging derivatives: Net unrealized (loss) arising during the period (5,555) 1,494 (4,061) Less: reclassification adjustment for (losses) realized in net income — — — Net unrealized (loss) on cash flow hedging derivatives (5,555) 1,494 (4,061) Other comprehensive (loss) (250,488) 65,237 (185,251)
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 (loss), for the three and nine months ended September 30, 2023 and 2022: (In thousands) Net unrealized Net loss on Net unrealized Total Three Months Ended September 30, 2023 Balance at Beginning of Period $ (176,274) $ (9,350) $ (616) $ (186,240) Other comprehensive (loss) before reclassifications (29,981) (2,282) (32,263) Less: amounts reclassified from accumulated other comprehensive (loss) — (117) — (117) Total other comprehensive (loss) (29,981) (2,165) — (32,146) Balance at End of Period $ (206,255) $ (11,515) $ (616) $ (218,386) Three Months Ended September 30, 2022 Balance at Beginning of Period $ (121,154) $ — $ (1,845) $ (122,999) Other comprehensive (loss) before reclassifications (61,434) (4,061) — (65,495) Less: amounts reclassified from accumulated other comprehensive (loss) — — — — Total other comprehensive income (61,434) (4,061) — (65,495) Balance at End of Period $ (182,588) $ (4,061) $ (1,845) $ (188,494) (In thousands) Net unrealized Net loss on Net unrealized Total Nine Months Ended September 30, 2023 Balance at Beginning of Period $ (175,558) $ (4,878) $ (616) $ (181,052) Other comprehensive (loss) before reclassifications (30,697) (6,983) — $ (37,680) Less: amounts reclassified from accumulated other comprehensive (loss) — (346) — $ (346) Total other comprehensive (loss) (30,697) (6,637) — (37,334) Balance at End of Period (206,255) (11,515) (616) (218,386) Nine Months Ended September 30, 2022 Balance at Beginning of Period $ (1,398) $ — $ (1,845) $ (3,243) Other comprehensive (loss) before reclassifications (181,186) (4,061) (185,247) Less: amounts reclassified from accumulated other comprehensive (loss) 4 — — 4 Total other comprehensive income (181,190) (4,061) — (185,251) Balance at End of Period $ (182,588) $ (4,061) $ (1,845) $ (188,494)
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 and nine months ended September 30, 2023 and 2022: Affected Line Item in the Three Months Ended September 30, Statement where Net Income (In thousands) 2023 2022 is Presented Realized gains on AFS securities: $ — $ — Non-interest income — — Tax expense — — Net of tax Realized (losses) on cash flow hedging derivatives: (159) — Interest expense — — Non-interest expense 42 — Tax benefit (117) — Net of tax Total reclassifications for the period $ (117) $ — Net of tax Affected Line Item in the Nine Months Ended September 30, Statement where Net Income (In thousands) 2023 2022 is Presented Realized gains on AFS securities: $ — $ 6 Non-interest income — (2) Tax expense — 4 Net of tax Realized (losses) on cash flow hedging derivatives: (473) — Interest expense — — Non-interest expense 127 — Tax benefit (346) — Net of tax Total reclassifications for the period $ (346) $ 4 Net of tax

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	Earnings per share have been computed based on the following (average diluted shares outstanding are calculated using the treasury stock method): Three Months Ended September 30, Nine Months Ended September 30, (In thousands, except per share data) 2023 2022 2023 2022 Net income $ 19,545 $ 18,717 $ 71,043 $ 62,028 Average number of common shares issued 51,903 51,903 51,903 51,903 Less: average number of treasury shares 7,916 6,433 7,675 5,068 Less: average number of unvested stock award shares 823 770 793 779 Average number of basic shares outstanding 43,164 44,700 43,435 46,056 Plus: dilutive effect of unvested stock award shares 183 330 205 336 Plus: dilutive effect of stock options outstanding — 4 — 4 Average number of diluted shares outstanding 43,347 45,034 43,640 46,396 Basic earnings per common share: $ 0.45 $ 0.42 $ 1.64 $ 1.35 Diluted earnings per common share: $ 0.45 $ 0.42 $ 1.63 $ 1.34

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS (Tables)	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Schedule 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 nine months ended September 30, 2023 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, 2022 704 $ 22.85 49 $ 26.46 Granted 400 26.87 — — Acquired — — — — Stock options exercised — — — — Stock awards vested (236) 20.91 — — Forfeited (72) 25.48 — — Expired — — — — September 30, 2023 796 $ 24.92 49 $ 26.46

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table summarizes financial assets and financial liabilities measured at fair value on a recurring basis as of September 30, 2023 and December 31, 2022, segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value. September 30, 2023 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading securities $ — $ — $ 6,171 $ 6,171 Securities available for sale: U.S Treasuries 7,873 — — 7,873 Municipal bonds and obligations — 58,694 — 58,694 Agency collateralized mortgage obligations — 460,356 — 460,356 Agency residential mortgage-backed securities — 483,201 — 483,201 Agency commercial mortgage-backed securities — 211,371 — 211,371 Corporate bonds — 34,280 3,960 38,240 Other bonds and obligations — 656 — 656 Equity securities 12,325 — — 12,325 Loans held for investment at fair value — — 408 408 Loans held for sale — 2,342 — 2,342 Derivative assets — 64,151 10 64,161 Capitalized servicing rights — — 1,706 1,706 Derivative liabilities — 116,594 9 116,603 December 31, 2022 Level 1 Level 2 Level 3 Total (In thousands) Inputs Inputs Inputs Fair Value Trading securities $ — $ — $ 6,708 $ 6,708 Securities available for sale: U.S Treasuries 11,973 — — 11,973 Municipal bonds and obligations — 63,335 — 63,335 Agency collateralized mortgage obligations — 531,945 — 531,945 Agency residential mortgage-backed securities — 546,313 — 546,313 Agency commercial mortgage-backed securities — 228,468 — 228,468 Corporate bonds — 36,510 4,000 40,510 Equity securities 12,856 — — 12,856 Loans held for investment at fair value — — 605 605 Loans held for sale — 942 — 942 Derivative assets — 54,216 25 54,241 Capitalized servicing rights — — 1,846 1,846 Derivative liabilities — 97,030 — 97,030
Schedule of Loans Held for Investment and Loans Held for Sale	Aggregate Fair Value September 30, 2023 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 408 $ 9,064 $ (8,656) Aggregate Fair Value December 31, 2022 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 605 $ 10,948 $ (10,343) 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 September 30, 2023 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale $ 2,342 $ 2,312 $ 30 Aggregate Fair Value December 31, 2022 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for sale $ 942 $ 927 $ 15
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 and nine months ended September 30, 2023 and 2022. Assets (Liabilities) Securities Loans Capitalized Trading Available Held for Commitments Forward Servicing (In thousands) Securities for Sale Investment to Lend Commitments Rights Three Months Ended September 30, 2023 June 30, 2023 $ 6,405 $ 3,930 $ 401 $ 37 $ 63 $ 1,886 Unrealized (loss)/gain, net recognized in other non-interest income (19) — 28 26 (53) (180) Unrealized gain included in accumulated other comprehensive income — 30 — — — — Paydown of asset (215) — (21) — — — Transfers to held for sale loans — — — (72) — — September 30, 2023 $ 6,171 $ 3,960 $ 408 $ (9) $ 10 $ 1,706 Nine Months Ended September 30, 2023 December 31, 2022 $ 6,708 $ 4,000 $ 605 $ 17 $ 8 $ 1,846 Unrealized (loss)/gain, net recognized in other non-interest income 104 — (119) 146 2 (140) Unrealized (loss) included in accumulated other comprehensive income — (40) — — — — Paydown of asset (641) — (78) — — — Transfers to held for sale loans — — — (172) — — September 30, 2023 $ 6,171 $ 3,960 $ 408 $ (9) $ 10 $ 1,706 Unrealized (loss)/gain relating to instruments still held at September 30, 2023 $ (251) $ (40) $ — $ (9) $ 10 $ — Assets (Liabilities) Securities Loans Capitalized Trading Available Held for Commitments Forward Servicing (In thousands) Securities for Sale Investment to Lend Commitments Rights Three Months Ended September 30, 2022 June 30, 2022 $ 7,040 $ 4,020 $ 1,049 $ 26 $ 18 $ 1,906 Unrealized (loss)/gain, net recognized in other non-interest income (23) — (6) 41 (11) 120 Unrealized gain included in accumulated other comprehensive income — (100) — — — — Paydown of asset (205) (247) — — — Transfers to held for sale loans — — — (52) — — September 30, 2022 $ 6,812 $ 3,920 $ 796 $ 15 $ 7 $ 2,026 Nine Months Ended September 30, 2022 December 31, 2021 $ 8,354 $ 4,030 $ 1,200 $ 124 $ 134 $ 1,966 Unrealized (loss)/gain, net recognized in other non-interest income (933) — 462 171 (127) 60 Unrealized (loss) included in accumulated other comprehensive income — (110) — — — — Paydown of asset (609) — (866) — — — Transfers to held for sale loans — — — (280) — — Additions to servicing rights — — 0 — — — September 30, 2022 $ 6,812 $ 3,920 $ 796 $ 15 $ 7 $ 2,026 Unrealized (loss)/gain relating to instruments still held at September 30, 2022 $ (459) $ (80) $ — $ 26 $ 18 $ —
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) September 30, 2023 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading Securities $ 6,171 Discounted Cash Flow Discount Rate 5.14 % AFS Securities 3,960 Indication from Market Maker Price 99.00% Loans held for investment 408 Discounted Cash Flow Discount Rate 25.00 % Collateral Value $0.0 - $18.6 Commitments to lend (9) Historical Trend Closing Ratio 80.39 % Pricing Model Origination Costs, per loan $ 3 Forward commitments 10 Historical Trend Closing Ratio 80.39 % Pricing Model Origination Costs, per loan $ 3 Capitalized servicing rights 1,706 Discounted cash flow Constant Prepayment Rate (CPR) 8.62 % Discount Rate 10.58 % Total $ 12,246 Fair Value Significant (In thousands) December 31, 2022 Valuation Techniques Unobservable Inputs Value Assets (Liabilities) Trading Securities $ 6,708 Discounted Cash Flow Discount Rate 5.92 % AFS Securities 4,000 Indication from Market Maker Price 100.00 % Loans held for investment 605 Discounted Cash Flow Discount Rate 25.00 % Collateral Value $0.0- $20.4 Commitments to lend 17 Historical Trend Closing Ratio 80.63 % Pricing Model Origination Costs, per loan $ 2 Forward commitments 8 Historical Trend Closing Ratio 80.63 % Pricing Model Origination Costs, per loan $ 2 Capitalized servicing rights 1,846 Discounted Cash Flow Constant Prepayment Rate (CPR) 11.07 % Discount Rate 9.56 % Total $ 13,184 September 30, 2023 Fair Value Measurement Date December 31, 2022 Fair Value Measurement Date Level 3 Level 3 Level 3 Level 3 (In thousands) Inputs Inputs Inputs Inputs Assets Individually evaluated $ 5,676 September 2023 $ 14,571 December 2022 Loans held for sale — September 2023 3,369 December 2022 Capitalized servicing rights 10,850 September 2023 11,201 December 2022 Total $ 16,526 $ 29,141 Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets is as follows: Fair Value (In thousands) September 30, 2023 Valuation Techniques Unobservable Inputs Range (Weighted Average) (1) Assets Individually evaluated $ 5,676 Fair Value of Collateral Discounted Cash Flow - Loss Severity (100.00)% to (0.01)% (60.44%) Appraised Value $0 to $3,361 ($2,336) Capitalized servicing rights 10,850 Discounted Cash Flow Constant Prepayment Rate (CPR) 4.78% to 12.22% (11.70%) Discount Rate 9.59% to 19.71% (15.26%) Total $ 16,526 (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, 2022 Valuation Techniques Unobservable Inputs Range (Weighted Average) (1) Assets Individually evaluated $ 14,571 Fair Value of Collateral Discounted Cash Flow - loss severity (100.00)% to 74.74% ((40.02)%) Appraised Value $0 to $2,160 ($643) Loans held for sale 3,369 Fair Value of Collateral Appraised Value $3,369 Capitalized servicing rights 11,201 Discounted Cash Flow Constant Prepayment Rate (CPR) 5.81% to 13.18% (10.94%) Discount Rate 9.59% to 22.70% (16.83%) Total $ 29,141 (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.
Schedule of Estimated Non-recurring Fair Value 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. September 30, 2023 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 663,470 $ 663,470 $ 663,470 $ — $ — Trading securities 6,171 6,171 — — 6,171 Equity securities 12,325 12,325 12,325 — — Securities available for sale 1,260,391 1,260,391 7,873 1,248,558 3,960 Securities held to maturity 552,981 453,729 — 452,178 1,551 Federal Home Loan Bank stock 38,912 N/A N/A N/A N/A Net loans 8,881,585 8,757,345 — — 8,757,345 Loans held for sale 2,342 2,342 — 2,342 — Accrued interest receivable 52,669 52,669 — 52,669 — Derivative assets 64,161 64,161 — 64,151 10 Financial Liabilities Total deposits $ 9,980,544 $ 9,951,662 $ — $ 9,947,373 $ — Short-term debt 670,000 669,981 — 669,981 — Long-term Federal Home Loan Bank advances and other 134,295 129,182 — 129,182 — Subordinated borrowings 121,300 94,192 — 94,192 — Accrued interest payable 12,794 12,794 — 12,794 — Derivative liabilities 116,603 116,603 — 116,594 9 December 31, 2022 Carrying Fair (In thousands) Amount Value Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 685,355 $ 685,355 $ 685,355 $ — $ — Trading securities 6,708 6,708 — — 6,708 Equity securities 12,856 12,856 12,856 — — Securities available for sale and other 1,423,200 1,423,200 11,973 1,407,227 4,000 Securities held to maturity 583,453 507,464 — 505,508 1,956 Federal Home Loan Bank stock 7,219 N/A N/A N/A N/A Net loans 8,239,039 8,194,110 — — 8,194,110 Loans held for sale 4,311 4,311 — 942 3,369 Accrued interest receivable 46,868 46,868 — 46,868 — Derivative assets 54,241 54,241 — 54,216 25 Financial Liabilities Total deposits $ 10,327,269 $ 10,283,543 $ — $ 10,283,543 $ — Short-term debt — — — — — Long-term Federal Home Loan Bank advances 4,445 2,782 — 2,782 — Subordinated borrowings 121,064 110,853 — 110,853 — Accrued interest payable 1,610 1,610 — 1,610 — Derivative liabilities 97,030 97,030 — 97,030 —

NET INTEREST INCOME AFTER PRO_2

NET INTEREST INCOME AFTER PROVISION/(BENEFIT) FOR CREDIT LOSSES (Tables)	9 Months Ended
	Sep. 30, 2023
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 and nine months ended September 30, 2023 and 2022, respectively. Three Months Ended September 30, Nine Months Ended September 30, (In thousands) 2023 2022 2023 2022 Net interest income $ 90,334 $ 92,084 $ 280,626 $ 242,505 Provision/(benefit) for credit losses 8,000 3,000 24,999 (1,000) Net interest after provision for credit losses $ 82,334 $ 89,084 $ 255,627 $ 243,505

TRADING SECURITIES (Details)

TRADING SECURITIES (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Amortized cost	$ 6.4	$ 7.1
Trading securities	$ 6.2	$ 6.7

SECURITIES AVAILABLE FOR SALE_3

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND EQUITY SECURITIES - Schedule of Securities Available for Sale, Held to Maturity, and Equity Securities (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022	Jun. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Securities available for sale
Amortized  Cost	$ 1,538,851	$ 1,661,196
Gross Unrealized Gains	126	571
Gross Unrealized Losses	(278,586)	(238,567)
Fair Value	1,260,391	1,423,200
Allowance	0	0
Securities held to maturity
Amortized  Cost	552,981	583,453
Gross Unrealized Gains	39	699
Gross Unrealized Losses	(99,291)	(76,688)
Fair Value	453,729	507,464
Allowance	69	91	$ 71	$ 95	$ 94	$ 105
Equity securities, amortized cost	15,035	15,035
Equity securities, gross unrealized gains	0	0
Equity securities, gross unrealized losses	(2,710)	(2,179)
Equity securities, fair value	12,325	12,856
Amortized  Cost	2,106,867	2,259,684
Gross Unrealized Gains	165	1,270
Gross Unrealized Losses	(380,587)	(317,434)
Fair Value	1,726,445	1,943,520
Allowance	69	91
U.S Treasuries
Securities available for sale
Amortized  Cost	7,873	11,972
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Fair Value	7,873	11,973
Allowance		0
Municipal bonds and obligations
Securities available for sale
Amortized  Cost	65,397	65,943
Gross Unrealized Gains	0	422
Gross Unrealized Losses	(6,703)	(3,030)
Fair Value	58,694	63,335
Allowance	0	0
Securities held to maturity
Amortized  Cost	255,888	266,793
Gross Unrealized Gains	33	691
Gross Unrealized Losses	(36,047)	(23,704)
Fair Value	219,874	243,780
Allowance	48	66	49	67	66	70
Agency collateralized mortgage obligations
Securities available for sale
Amortized  Cost	570,205	631,732
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(109,849)	(99,787)
Fair Value	460,356	531,945
Allowance	0	0
Securities held to maturity
Amortized  Cost	116,267	128,136
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(22,592)	(20,420)
Fair Value	93,675	107,716
Allowance	0	0
Agency mortgage-backed securities
Securities available for sale
Amortized  Cost	595,518	643,308
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(112,317)	(96,996)
Fair Value	483,201	546,313
Allowance	0	0
Securities held to maturity
Amortized  Cost	48,196	50,958
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(10,839)	(9,240)
Fair Value	37,357	41,718
Allowance	0	0
Agency commercial mortgage-backed securities
Securities available for sale
Amortized  Cost	255,891	264,218
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(44,520)	(35,750)
Fair Value	211,371	228,468
Allowance	0	0
Securities held to maturity
Amortized  Cost	130,705	135,206
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(29,721)	(23,203)
Fair Value	100,984	112,003
Allowance	0	0
Corporate bonds
Securities available for sale
Amortized  Cost	43,312	43,368
Gross Unrealized Gains	59	80
Gross Unrealized Losses	(5,131)	(2,938)
Fair Value	38,240	40,510
Allowance	0	0
Tax advantaged economic development bonds
Securities held to maturity
Amortized  Cost	1,637	2,069
Gross Unrealized Gains	6	8
Gross Unrealized Losses	(92)	(121)
Fair Value	1,551	1,956
Allowance	21	25	$ 22	$ 28	$ 28	$ 35
Other bonds and obligations
Securities available for sale
Amortized  Cost	655	655
Gross Unrealized Gains	67	67
Gross Unrealized Losses	(66)	(66)
Fair Value	656	656
Allowance	0	0
Securities held to maturity
Amortized  Cost	288	291
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	288	291
Allowance	$ 0	$ 0

SECURITIES AVAILABLE FOR SALE_4

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND EQUITY SECURITIES - Schedule of Debt Securities, Held-to-maturity, Allowance for Credit Loss (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Total
Beginning balance	$ 71	$ 94	$ 91	$ 105
(Benefit)/provision for credit losses	(2)	1	(22)	(10)
Ending balance	69	95	69	95
Municipal bonds and obligations
Total
Beginning balance	49	66	66	70
(Benefit)/provision for credit losses	(1)	1	(18)	(3)
Ending balance	48	67	48	67
Tax advantaged economic development bonds
Total
Beginning balance	22	28	25	35
(Benefit)/provision for credit losses	(1)	0	(4)	(7)
Ending balance	$ 21	$ 28	$ 21	$ 28

SECURITIES AVAILABLE FOR SALE_5

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND EQUITY SECURITIES - Schedule of Amortized Cost and Estimated Fair Value of Available for Sale (AFS) and Held to Maturity (HTM) Securities, Segregated by Contractual Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Available for sale, Amortized Cost
Within 1 year	$ 8,693
Over 1 year to 5 years	11,291
Over 5 years to 10 years	54,720
Over 10 years	42,533
Total bonds and obligations	117,237
Mortgage-backed securities	1,421,614
Amortized  Cost	1,538,851	$ 1,661,196
Available for sale, Fair Value
Within 1 year	8,692
Over 1 year to 5 years	11,068
Over 5 years to 10 years	48,694
Over 10 years	37,009
Total bonds and obligations	105,463
Mortgage-backed securities	1,154,928
Fair Value	1,260,391	1,423,200
Held to maturity, Amortized Cost
Within 1 year	822
Over 1 year to 5 years	1,683
Over 5 years to 10 years	36,012
Over 10 years	219,296
Total bonds and obligations	257,813
Mortgage-backed securities	295,168
Amortized  Cost	552,981	583,453
Held to maturity, Fair Value
Within 1 year	822
Over 1 year to 5 years	1,667
Over 5 years to 10 years	34,653
Over 10 years	184,571
Total bonds and obligations	221,713
Mortgage-backed securities	232,016
Fair Value	$ 453,729	$ 507,464

SECURITIES AVAILABLE FOR SALE_6

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND EQUITY SECURITIES - Narrative (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)
Investment Holdings [Line Items]
Purchases of securities available for sale | $	$ 7,800,000	$ 41,400,000	$ 44,586,000	$ 428,068,000
Proceeds from sale of available-for-sale securities | $	$ 0	$ 0	$ 0	149,994,000
Debt securities, available-for-sale, gain (loss) | $				$ 6,000
Municipal bonds and obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	90		90
Number of securities	93		93
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage			10.40%
Held-to-maturity, securities in unrealized loss positions	159		159
Held-to-maturity securities portfolio, number of securities	178		178
Aggregate losses, percent			14.70%
Agency collateralized mortgage obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	238		238
Number of securities	240		240
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage			19.30%
Held-to-maturity, securities in unrealized loss positions	12		12
Held-to-maturity securities portfolio, number of securities	12		12
Aggregate losses, percent			19.40%
Agency commercial mortgage-backed securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	135		135
Number of securities	136		136
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage			18.40%
Held-to-maturity, securities in unrealized loss positions	17		17
Held-to-maturity securities portfolio, number of securities	17		17
Aggregate losses, percent			22.70%
Corporate bonds
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	14		14
Number of securities	15		15
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage			12.10%
Other bonds and obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	2		2
Number of securities	3		3
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage			18.30%
Tax advantaged economic development bonds
Investment Holdings [Line Items]
Held-to-maturity, securities in unrealized loss positions	1		1
Held-to-maturity securities portfolio, number of securities	2		2
Aggregate losses, percent			9.10%

SECURITIES AVAILABLE FOR SALE_7

SECURITIES AVAILABLE FOR SALE, HELD TO MATURITY, AND EQUITY SECURITIES - Schedule of Securities with Unrealized Losses, Segregated by the Duration of their Continuous Unrealized Loss Positions (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	$ 3,226	$ 40,176
Less Than Twelve Months, Fair Value	45,963	443,798
Over Twelve Months, Gross Unrealized Losses	275,360	198,391
Over Twelve Months, Fair Value	1,204,645	938,147
Total Gross Unrealized Losses	278,586	238,567
Total Fair Value	1,250,608	1,381,945
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	7,987	8,958
Less Than Twelve Months, Fair Value	128,150	187,307
Over Twelve Months, Gross Unrealized Losses	91,304	67,730
Over Twelve Months, Fair Value	313,700	239,115
Total Gross Unrealized Losses	99,291	76,688
Total Fair Value	441,850	426,422
Securities available for sale and held to maturity
Less Than Twelve Months, Gross Unrealized Losses	11,213	49,134
Less Than Twelve Months, Fair Value	174,113	631,105
Over Twelve Months, Gross Unrealized Losses	366,664	266,121
Over Twelve Months, Fair Value	1,518,345	1,177,262
Total Gross Unrealized Losses	377,877	315,255
Total Fair Value	1,692,458	1,808,367
Municipal bonds and obligations
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	2,779	2,406
Less Than Twelve Months, Fair Value	37,869	36,696
Over Twelve Months, Gross Unrealized Losses	3,924	624
Over Twelve Months, Fair Value	20,200	2,763
Total Gross Unrealized Losses	6,703	3,030
Total Fair Value	58,069	39,459
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	7,986	5,476
Less Than Twelve Months, Fair Value	128,129	125,494
Over Twelve Months, Gross Unrealized Losses	28,061	18,228
Over Twelve Months, Fair Value	80,778	38,341
Total Gross Unrealized Losses	36,047	23,704
Total Fair Value	208,907	163,835
Agency collateralized mortgage obligations
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	0	23,052
Less Than Twelve Months, Fair Value	0	247,509
Over Twelve Months, Gross Unrealized Losses	109,849	76,735
Over Twelve Months, Fair Value	460,356	284,434
Total Gross Unrealized Losses	109,849	99,787
Total Fair Value	460,356	531,943
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	1	2,734
Less Than Twelve Months, Fair Value	21	49,539
Over Twelve Months, Gross Unrealized Losses	22,591	17,686
Over Twelve Months, Fair Value	93,654	58,177
Total Gross Unrealized Losses	22,592	20,420
Total Fair Value	93,675	107,716
Agency mortgage-backed securities
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	6	3,124
Less Than Twelve Months, Fair Value	285	37,540
Over Twelve Months, Gross Unrealized Losses	112,311	93,872
Over Twelve Months, Fair Value	482,909	508,683
Total Gross Unrealized Losses	112,317	96,996
Total Fair Value	483,194	546,223
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	0	300
Less Than Twelve Months, Fair Value	0	2,419
Over Twelve Months, Gross Unrealized Losses	10,839	8,940
Over Twelve Months, Fair Value	37,357	39,299
Total Gross Unrealized Losses	10,839	9,240
Total Fair Value	37,357	41,718
Agency commercial mortgage-backed securities
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	0	9,885
Less Than Twelve Months, Fair Value	0	96,396
Over Twelve Months, Gross Unrealized Losses	44,520	25,865
Over Twelve Months, Fair Value	211,362	132,043
Total Gross Unrealized Losses	44,520	35,750
Total Fair Value	211,362	228,439
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	0	447
Less Than Twelve Months, Fair Value	0	9,713
Over Twelve Months, Gross Unrealized Losses	29,721	22,756
Over Twelve Months, Fair Value	100,984	102,290
Total Gross Unrealized Losses	29,721	23,203
Total Fair Value	100,984	112,003
Corporate bonds
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	441	1,709
Less Than Twelve Months, Fair Value	7,809	25,657
Over Twelve Months, Gross Unrealized Losses	4,690	1,229
Over Twelve Months, Fair Value	29,523	9,929
Total Gross Unrealized Losses	5,131	2,938
Total Fair Value	37,332	35,586
Other bonds and obligations
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	0	0
Less Than Twelve Months, Fair Value	0	0
Over Twelve Months, Gross Unrealized Losses	66	66
Over Twelve Months, Fair Value	295	295
Total Gross Unrealized Losses	66	66
Total Fair Value	295	295
Securities held to maturity
Total Gross Unrealized Losses	0	0
Tax advantaged economic development bonds
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	0	1
Less Than Twelve Months, Fair Value	0	142
Over Twelve Months, Gross Unrealized Losses	92	120
Over Twelve Months, Fair Value	927	1,008
Total Gross Unrealized Losses	92	121
Total Fair Value	$ 927	$ 1,150

LOANS AND ALLOWANCE FOR CREDI_3

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Total Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 8,984,377		$ 8,335,309
Allowance for credit losses	(102,792)	$ (100,219)	(96,270)	$ (96,013)	$ (99,021)	$ (106,094)
Net loans	8,881,585		8,239,039
Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	561,691		319,452
Allowance for credit losses	(3,502)	(1,553)	(1,227)	(1,231)	(1,710)	(3,206)
Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	602,120		620,088
Allowance for credit losses	(2,405)	(2,066)	(1,810)	(1,720)	(4,621)	(6,120)
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	658,189		640,489
Allowance for credit losses	(9,455)	(10,343)	(10,739)	(10,185)	(10,687)	(12,752)
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,605,823		2,496,237
Allowance for credit losses	(33,282)	(36,322)	(30,724)	(29,421)	(26,166)	(32,106)
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,363,771		1,445,236
Allowance for credit losses	(18,519)	(18,741)	(18,743)	(18,635)	(22,914)	(22,584)
Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,729,411		2,312,447
Allowance for credit losses	(20,004)	(18,218)	(18,666)	(19,838)	(16,411)	(22,406)
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	227,052		227,450
Allowance for credit losses	(2,102)	(2,572)	(2,173)	(2,421)	(2,828)	(4,006)
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	236,320		273,910
Allowance for credit losses	$ (13,523)	$ (10,404)	$ (12,188)	$ (12,562)	$ (13,684)	$ (2,914)

LOANS AND ALLOWANCE FOR CREDI_4

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2023 USD ($)	Sep. 30, 2023 USD ($) qtr	Dec. 31, 2022 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Valuation period | qtr		7
Forecasting revision period		1 year
Commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, reclassification, held for sale	$ 0	$ 0
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable, nonaccrual, medallion loans, fair value	400,000	400,000	$ 600,000
Financing receivable, nonaccrual, medallion loans, contractual balance	$ 9,100,000	$ 9,100,000	$ 10,900,000

LOANS AND ALLOWANCE FOR CREDI_5

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Credit Loss Activity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 100,219	$ 99,021	$ 96,270	$ 106,094
Charge-offs	(6,744)	(7,424)	(22,365)	(15,063)
Recoveries	1,315	1,417	4,267	5,972
Provision/(Benefit) for Credit Losses	8,002	2,999	25,021	(990)
Balance at End of Period	102,792	96,013	102,792	96,013
Impact of ASU No. 2022-02 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0		(401)
Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	1,553	1,710	1,227	3,206
Charge-offs	0	0	(1)	0
Recoveries	0	0	0	0
Provision/(Benefit) for Credit Losses	1,949	(479)	2,276	(1,975)
Balance at End of Period	3,502	1,231	3,502	1,231
Construction and commercial multifamily | Construction | Impact of ASU No. 2022-02 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0		0
Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,066	4,621	1,810	6,120
Charge-offs	0	(94)	0	(94)
Recoveries	0	112	6	112
Provision/(Benefit) for Credit Losses	339	(2,919)	589	(4,418)
Balance at End of Period	2,405	1,720	2,405	1,720
Construction and commercial multifamily | Commercial multifamily | Impact of ASU No. 2022-02 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0		0
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	10,343	10,687	10,739	12,752
Charge-offs	(25)	(176)	(489)	(603)
Recoveries	116	256	758	562
Provision/(Benefit) for Credit Losses	(979)	(582)	(1,577)	(2,526)
Balance at End of Period	9,455	10,185	9,455	10,185
Commercial real estate | Commercial real estate owner occupied | Impact of ASU No. 2022-02 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0		24
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	36,322	26,166	30,724	32,106
Charge-offs	(1)	(1,012)	(1)	(5,895)
Recoveries	20	153	195	1,464
Provision/(Benefit) for Credit Losses	(3,059)	4,114	2,364	1,746
Balance at End of Period	33,282	29,421	33,282	29,421
Commercial real estate | Commercial real estate non-owner occupied | Impact of ASU No. 2022-02 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0		0
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	18,741	22,914	18,743	22,584
Charge-offs	(3,997)	(5,545)	(14,625)	(6,951)
Recoveries	617	616	1,736	2,485
Provision/(Benefit) for Credit Losses	3,158	650	12,688	517
Balance at End of Period	18,519	18,635	18,519	18,635
Commercial and industrial | Impact of ASU No. 2022-02 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0		(23)
Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	18,218	16,411	18,666	22,406
Charge-offs	(72)	(102)	(313)	(480)
Recoveries	92	131	555	719
Provision/(Benefit) for Credit Losses	1,766	3,398	1,094	(2,807)
Balance at End of Period	20,004	19,838	20,004	19,838
Residential real estate | Residential real estate | Impact of ASU No. 2022-02 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0		2
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,572	2,828	2,173	4,006
Charge-offs	(71)	(9)	(88)	(9)
Recoveries	278	9	437	255
Provision/(Benefit) for Credit Losses	(677)	(407)	(420)	(1,831)
Balance at End of Period	2,102	2,421	2,102	2,421
Consumer loans | Home equity | Impact of ASU No. 2022-02 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	0		0
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	10,404	13,684	12,188	2,914
Charge-offs	(2,578)	(486)	(6,848)	(1,031)
Recoveries	192	140	580	375
Provision/(Benefit) for Credit Losses	5,505	(776)	8,007	10,304
Balance at End of Period	13,523	$ 12,562	13,523	$ 12,562
Consumer loans | Consumer other | Impact of ASU No. 2022-02 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 0		$ (404)

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		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance at beginning of period	$ 8,687	$ 7,043	$ 8,588	$ 7,043
Expense for credit losses	300	700	399	700
Balance at end of period	$ 8,987	$ 7,743	$ 8,987	$ 7,743

LOANS AND ALLOWANCE FOR CREDI_7

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loan Risk by Category (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Current period gross write-offs
Total	$ 6,744	$ 7,424	$ 22,365	$ 15,063
Payment performance
Total loans	8,984,377		8,984,377		$ 8,335,309
Special Mention | Performing
Payment performance
Total loans	79,258		79,258		68,127
Substandard | Performing
Payment performance
Total loans	114,252		114,252		88,665
Construction and commercial multifamily | Construction
Current period gross write-offs
Write-offs, originated in current year			0
Write-offs, originated in prior year			0
Write-offs, originated two years before current year			0
Write-offs, originated three years before current year			0
Write-offs, originated four years before current year			0
Write-offs, originated five years before current year			1
Write-offs, Revolving Loans Amortized Cost Basis			0
Write-offs, Revolving Loans Converted to Term			0
Total	0	0	1	0
Payment performance
Loans originated in current fiscal year	71,516		71,516		153,393
Loans originated in fiscal year before current fiscal year	301,236		301,236		133,708
Loans originated two years before current fiscal year	156,645		156,645		25,634
Loans originated three years before current fiscal year	29,177		29,177		3,432
Loans originated four years before current fiscal year	2,553		2,553		1,361
Loans originated more than five years before current fiscal year	564		564		1,924
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	561,691		561,691		319,452
Construction and commercial multifamily | Commercial multifamily
Current period gross write-offs
Write-offs, originated in current year			0
Write-offs, originated in prior year			0
Write-offs, originated two years before current year			0
Write-offs, originated three years before current year			0
Write-offs, originated four years before current year			0
Write-offs, originated five years before current year			0
Write-offs, Revolving Loans Amortized Cost Basis			0
Write-offs, Revolving Loans Converted to Term			0
Total	0	94	0	94
Payment performance
Loans originated in current fiscal year	8,974		8,974		205,124
Loans originated in fiscal year before current fiscal year	217,062		217,062		61,032
Loans originated two years before current fiscal year	57,305		57,305		30,211
Loans originated three years before current fiscal year	29,699		29,699		100,696
Loans originated four years before current fiscal year	95,398		95,398		73,187
Loans originated more than five years before current fiscal year	192,684		192,684		149,633
Revolving Loans Amortized Cost Basis	998		998		205
Revolving Loans Converted to Term	0		0		0
Total loans	602,120		602,120		620,088
Construction and commercial multifamily | Pass | Construction
Payment performance
Loans originated in current fiscal year	71,516		71,516		153,393
Loans originated in fiscal year before current fiscal year	301,236		301,236		133,708
Loans originated two years before current fiscal year	139,599		139,599		25,634
Loans originated three years before current fiscal year	29,177		29,177		3,432
Loans originated four years before current fiscal year	2,553		2,553		1,361
Loans originated more than five years before current fiscal year	564		564		1,924
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	544,645		544,645		319,452
Construction and commercial multifamily | Pass | Commercial multifamily
Payment performance
Loans originated in current fiscal year	8,974		8,974		205,124
Loans originated in fiscal year before current fiscal year	217,062		217,062		61,032
Loans originated two years before current fiscal year	57,061		57,061		27,583
Loans originated three years before current fiscal year	27,126		27,126		100,696
Loans originated four years before current fiscal year	95,398		95,398		67,675
Loans originated more than five years before current fiscal year	187,225		187,225		149,633
Revolving Loans Amortized Cost Basis	998		998		205
Revolving Loans Converted to Term	0		0		0
Total loans	593,844		593,844		611,948
Construction and commercial multifamily | Special Mention | Construction
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		0
Loans originated two years before current fiscal year	471		471		0
Loans originated three years before current fiscal year	0		0		0
Loans originated four years before current fiscal year	0		0		0
Loans originated more than five years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	471		471		0
Construction and commercial multifamily | Special Mention | Commercial multifamily
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		0
Loans originated two years before current fiscal year	0		0		2,628
Loans originated three years before current fiscal year	0		0		0
Loans originated four years before current fiscal year	0		0		0
Loans originated more than five years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	0		0		2,628
Construction and commercial multifamily | Substandard | Construction
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		0
Loans originated two years before current fiscal year	16,575		16,575		0
Loans originated three years before current fiscal year	0		0		0
Loans originated four years before current fiscal year	0		0		0
Loans originated more than five years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	16,575		16,575		0
Construction and commercial multifamily | Substandard | Commercial multifamily
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		0
Loans originated two years before current fiscal year	244		244		0
Loans originated three years before current fiscal year	2,573		2,573		0
Loans originated four years before current fiscal year	0		0		5,512
Loans originated more than five years before current fiscal year	5,459		5,459		0
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	8,276		8,276		5,512
Commercial real estate | Commercial real estate owner occupied
Current period gross write-offs
Write-offs, originated in current year			0
Write-offs, originated in prior year			0
Write-offs, originated two years before current year			0
Write-offs, originated three years before current year			380
Write-offs, originated four years before current year			0
Write-offs, originated five years before current year			109
Write-offs, Revolving Loans Amortized Cost Basis			0
Write-offs, Revolving Loans Converted to Term			0
Total	25	176	489	603
Payment performance
Loans originated in current fiscal year	80,561		80,561		132,099
Loans originated in fiscal year before current fiscal year	123,121		123,121		127,392
Loans originated two years before current fiscal year	126,718		126,718		59,253
Loans originated three years before current fiscal year	69,372		69,372		82,858
Loans originated four years before current fiscal year	76,629		76,629		76,378
Loans originated more than five years before current fiscal year	180,146		180,146		159,045
Revolving Loans Amortized Cost Basis	1,642		1,642		3,464
Revolving Loans Converted to Term	0		0		0
Total loans	658,189		658,189		640,489
Commercial real estate | Commercial real estate non-owner occupied
Current period gross write-offs
Write-offs, originated in current year			0
Write-offs, originated in prior year			0
Write-offs, originated two years before current year			0
Write-offs, originated three years before current year			0
Write-offs, originated four years before current year			1
Write-offs, originated five years before current year			0
Write-offs, Revolving Loans Amortized Cost Basis			0
Write-offs, Revolving Loans Converted to Term			0
Total	1	1,012	1	5,895
Payment performance
Loans originated in current fiscal year	349,765		349,765		621,685
Loans originated in fiscal year before current fiscal year	584,973		584,973		410,359
Loans originated two years before current fiscal year	386,493		386,493		182,693
Loans originated three years before current fiscal year	148,457		148,457		347,406
Loans originated four years before current fiscal year	312,947		312,947		348,734
Loans originated more than five years before current fiscal year	804,876		804,876		567,514
Revolving Loans Amortized Cost Basis	18,312		18,312		17,846
Revolving Loans Converted to Term	0		0		0
Total loans	2,605,823		2,605,823		2,496,237
Commercial real estate | Pass | Commercial real estate owner occupied
Payment performance
Loans originated in current fiscal year	80,561		80,561		131,096
Loans originated in fiscal year before current fiscal year	123,110		123,110		127,270
Loans originated two years before current fiscal year	126,637		126,637		58,835
Loans originated three years before current fiscal year	68,938		68,938		82,576
Loans originated four years before current fiscal year	71,603		71,603		75,322
Loans originated more than five years before current fiscal year	173,060		173,060		154,056
Revolving Loans Amortized Cost Basis	1,642		1,642		3,464
Revolving Loans Converted to Term	0		0		0
Total loans	645,551		645,551		632,619
Commercial real estate | Pass | Commercial real estate non-owner occupied
Payment performance
Loans originated in current fiscal year	349,765		349,765		621,685
Loans originated in fiscal year before current fiscal year	584,973		584,973		410,359
Loans originated two years before current fiscal year	386,493		386,493		175,456
Loans originated three years before current fiscal year	141,534		141,534		333,783
Loans originated four years before current fiscal year	279,849		279,849		313,124
Loans originated more than five years before current fiscal year	767,366		767,366		530,322
Revolving Loans Amortized Cost Basis	18,312		18,312		17,846
Revolving Loans Converted to Term	0		0		0
Total loans	2,528,292		2,528,292		2,402,575
Commercial real estate | Special Mention | Commercial real estate owner occupied
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		0
Loans originated two years before current fiscal year	0		0		387
Loans originated three years before current fiscal year	387		387		0
Loans originated four years before current fiscal year	885		885		0
Loans originated more than five years before current fiscal year	2,447		2,447		0
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	3,719		3,719		387
Commercial real estate | Special Mention | Commercial real estate non-owner occupied
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		0
Loans originated two years before current fiscal year	0		0		0
Loans originated three years before current fiscal year	0		0		0
Loans originated four years before current fiscal year	27,219		27,219		20,000
Loans originated more than five years before current fiscal year	12,806		12,806		18,462
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	40,025		40,025		38,462
Commercial real estate | Substandard | Commercial real estate owner occupied
Payment performance
Loans originated in current fiscal year	0		0		1,003
Loans originated in fiscal year before current fiscal year	11		11		122
Loans originated two years before current fiscal year	81		81		31
Loans originated three years before current fiscal year	47		47		282
Loans originated four years before current fiscal year	4,141		4,141		1,056
Loans originated more than five years before current fiscal year	4,639		4,639		4,989
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	8,919		8,919		7,483
Commercial real estate | Substandard | Commercial real estate non-owner occupied
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		0
Loans originated two years before current fiscal year	0		0		7,237
Loans originated three years before current fiscal year	6,923		6,923		13,623
Loans originated four years before current fiscal year	5,879		5,879		15,610
Loans originated more than five years before current fiscal year	24,704		24,704		18,730
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	37,506		37,506		55,200
Commercial and industrial
Current period gross write-offs
Write-offs, originated in current year			0
Write-offs, originated in prior year			700
Write-offs, originated two years before current year			645
Write-offs, originated three years before current year			2,158
Write-offs, originated four years before current year			1,429
Write-offs, originated five years before current year			7,380
Write-offs, Revolving Loans Amortized Cost Basis			2,313
Write-offs, Revolving Loans Converted to Term			0
Total	3,997	5,545	14,625	6,951
Payment performance
Loans originated in current fiscal year	102,704		102,704		282,985
Loans originated in fiscal year before current fiscal year	238,451		238,451		153,377
Loans originated two years before current fiscal year	138,028		138,028		61,810
Loans originated three years before current fiscal year	52,968		52,968		77,446
Loans originated four years before current fiscal year	49,642		49,642		96,706
Loans originated more than five years before current fiscal year	149,260		149,260		103,134
Revolving Loans Amortized Cost Basis	632,718		632,718		669,778
Revolving Loans Converted to Term	0		0		0
Total loans	1,363,771		1,363,771		1,445,236
Commercial and industrial | Pass
Payment performance
Loans originated in current fiscal year	100,443		100,443		282,781
Loans originated in fiscal year before current fiscal year	234,213		234,213		147,070
Loans originated two years before current fiscal year	124,139		124,139		56,880
Loans originated three years before current fiscal year	49,315		49,315		67,975
Loans originated four years before current fiscal year	43,656		43,656		83,223
Loans originated more than five years before current fiscal year	129,863		129,863		99,367
Revolving Loans Amortized Cost Basis	596,559		596,559		648,956
Revolving Loans Converted to Term	0		0		0
Total loans	1,278,188		1,278,188		1,386,252
Commercial and industrial | Special Mention
Payment performance
Loans originated in current fiscal year	1,801		1,801		0
Loans originated in fiscal year before current fiscal year	3,323		3,323		5,811
Loans originated two years before current fiscal year	4,829		4,829		1,290
Loans originated three years before current fiscal year	2,111		2,111		1,332
Loans originated four years before current fiscal year	633		633		11,502
Loans originated more than five years before current fiscal year	1,574		1,574		912
Revolving Loans Amortized Cost Basis	17,575		17,575		2,632
Revolving Loans Converted to Term	0		0		0
Total loans	31,846		31,846		23,479
Commercial and industrial | Substandard
Payment performance
Loans originated in current fiscal year	460		460		204
Loans originated in fiscal year before current fiscal year	915		915		496
Loans originated two years before current fiscal year	9,060		9,060		3,640
Loans originated three years before current fiscal year	1,542		1,542		8,139
Loans originated four years before current fiscal year	5,353		5,353		1,981
Loans originated more than five years before current fiscal year	17,823		17,823		2,799
Revolving Loans Amortized Cost Basis	17,058		17,058		10,581
Revolving Loans Converted to Term	0		0		0
Total loans	52,211		52,211		27,840
Commercial and industrial | Doubtful
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		0
Loans originated two years before current fiscal year	0		0		0
Loans originated three years before current fiscal year	0		0		0
Loans originated four years before current fiscal year	0		0		0
Loans originated more than five years before current fiscal year	0		0		56
Revolving Loans Amortized Cost Basis	1,526		1,526		7,609
Revolving Loans Converted to Term	0		0		0
Total loans	1,526		1,526		7,665
Residential real estate | Residential real estate
Current period gross write-offs
Write-offs, originated in current year			0
Write-offs, originated in prior year			50
Write-offs, originated two years before current year			0
Write-offs, originated three years before current year			50
Write-offs, originated four years before current year			174
Write-offs, originated five years before current year			39
Write-offs, Revolving Loans Amortized Cost Basis			0
Write-offs, Revolving Loans Converted to Term			0
Total	72	102	313	480
Payment performance
Loans originated in current fiscal year	527,326		527,326		997,981
Loans originated in fiscal year before current fiscal year	986,401		986,401		280,956
Loans originated two years before current fiscal year	270,196		270,196		96,996
Loans originated three years before current fiscal year	91,919		91,919		71,973
Loans originated four years before current fiscal year	68,793		68,793		140,953
Loans originated more than five years before current fiscal year	784,635		784,635		723,423
Revolving Loans Amortized Cost Basis	141		141		165
Revolving Loans Converted to Term	0		0		0
Total loans	2,729,411		2,729,411		2,312,447
Residential real estate | Pass | Residential real estate
Payment performance
Loans originated in current fiscal year	527,326		527,326		997,981
Loans originated in fiscal year before current fiscal year	986,269		986,269		280,308
Loans originated two years before current fiscal year	269,172		269,172		96,548
Loans originated three years before current fiscal year	91,540		91,540		70,845
Loans originated four years before current fiscal year	66,691		66,691		138,894
Loans originated more than five years before current fiscal year	774,516		774,516		713,744
Revolving Loans Amortized Cost Basis	141		141		165
Revolving Loans Converted to Term	0		0		0
Total loans	2,715,655		2,715,655		2,298,485
Residential real estate | Special Mention | Residential real estate
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		364
Loans originated two years before current fiscal year	0		0		0
Loans originated three years before current fiscal year	0		0		861
Loans originated four years before current fiscal year	741		741		202
Loans originated more than five years before current fiscal year	816		816		707
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	1,557		1,557		2,134
Residential real estate | Substandard | Residential real estate
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	132		132		284
Loans originated two years before current fiscal year	1,024		1,024		448
Loans originated three years before current fiscal year	379		379		267
Loans originated four years before current fiscal year	1,361		1,361		1,857
Loans originated more than five years before current fiscal year	9,303		9,303		8,972
Revolving Loans Amortized Cost Basis	0		0		0
Revolving Loans Converted to Term	0		0		0
Total loans	12,199		12,199		11,828
Consumer loans | Home equity
Current period gross write-offs
Write-offs, originated in current year			0
Write-offs, originated in prior year			0
Write-offs, originated two years before current year			0
Write-offs, originated three years before current year			70
Write-offs, originated four years before current year			0
Write-offs, originated five years before current year			0
Write-offs, Revolving Loans Amortized Cost Basis			18
Write-offs, Revolving Loans Converted to Term			0
Total	71	9	88	9
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		114
Loans originated two years before current fiscal year	0		0		454
Loans originated three years before current fiscal year	443		443		0
Loans originated four years before current fiscal year	0		0		0
Loans originated more than five years before current fiscal year	2,615		2,615		17
Revolving Loans Amortized Cost Basis	223,994		223,994		226,865
Revolving Loans Converted to Term	0		0		0
Total loans	227,052		227,052		227,450
Consumer loans | Home equity | Performing
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		114
Loans originated two years before current fiscal year	0		0		454
Loans originated three years before current fiscal year	443		443		0
Loans originated four years before current fiscal year	0		0		0
Loans originated more than five years before current fiscal year	2,615		2,615		17
Revolving Loans Amortized Cost Basis	222,691		222,691		224,746
Revolving Loans Converted to Term	0		0		0
Total loans	225,749		225,749		225,331
Consumer loans | Home equity | Nonperforming
Payment performance
Loans originated in current fiscal year	0		0		0
Loans originated in fiscal year before current fiscal year	0		0		0
Loans originated two years before current fiscal year	0		0		0
Loans originated three years before current fiscal year	0		0		0
Loans originated four years before current fiscal year	0		0		0
Loans originated more than five years before current fiscal year	0		0		0
Revolving Loans Amortized Cost Basis	1,303		1,303		2,119
Revolving Loans Converted to Term	0		0		0
Total loans	1,303		1,303		2,119
Consumer loans | Consumer other
Current period gross write-offs
Write-offs, originated in current year			65
Write-offs, originated in prior year			5,729
Write-offs, originated two years before current year			804
Write-offs, originated three years before current year			11
Write-offs, originated four years before current year			44
Write-offs, originated five years before current year			195
Write-offs, Revolving Loans Amortized Cost Basis			0
Write-offs, Revolving Loans Converted to Term			0
Total	2,578	$ 486	6,848	$ 1,031
Payment performance
Loans originated in current fiscal year	40,787		40,787		161,745
Loans originated in fiscal year before current fiscal year	121,806		121,806		28,416
Loans originated two years before current fiscal year	21,854		21,854		8,356
Loans originated three years before current fiscal year	6,497		6,497		12,950
Loans originated four years before current fiscal year	8,400		8,400		28,085
Loans originated more than five years before current fiscal year	26,401		26,401		25,249
Revolving Loans Amortized Cost Basis	10,575		10,575		9,109
Revolving Loans Converted to Term	0		0		0
Total loans	236,320		236,320		273,910
Consumer loans | Consumer other | Performing
Payment performance
Loans originated in current fiscal year	40,770		40,770		161,157
Loans originated in fiscal year before current fiscal year	121,690		121,690		28,279
Loans originated two years before current fiscal year	21,794		21,794		8,312
Loans originated three years before current fiscal year	6,468		6,468		12,670
Loans originated four years before current fiscal year	8,261		8,261		27,608
Loans originated more than five years before current fiscal year	26,015		26,015		24,682
Revolving Loans Amortized Cost Basis	10,561		10,561		9,070
Revolving Loans Converted to Term	0		0		0
Total loans	235,559		235,559		271,778
Consumer loans | Consumer other | Nonperforming
Payment performance
Loans originated in current fiscal year	17		17		588
Loans originated in fiscal year before current fiscal year	116		116		137
Loans originated two years before current fiscal year	60		60		44
Loans originated three years before current fiscal year	29		29		280
Loans originated four years before current fiscal year	139		139		477
Loans originated more than five years before current fiscal year	386		386		567
Revolving Loans Amortized Cost Basis	14		14		39
Revolving Loans Converted to Term	0		0		0
Total loans	$ 761		$ 761		$ 2,132

LOANS AND ALLOWANCE FOR CREDI_8

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans Past Due (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 8,984,377	$ 8,335,309
Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	561,691	319,452
Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	602,120	620,088
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	658,189	640,489
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,605,823	2,496,237
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,363,771	1,445,236
Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,729,411	2,312,447
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	227,052	227,450
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	236,320	273,910
30-59 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	14,477	7,290
30-59 Days Past Due | Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
30-59 Days Past Due | Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	5,853	0
30-59 Days Past Due | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	334	122
30-59 Days Past Due | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	240	143
30-59 Days Past Due | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,263	1,173
30-59 Days Past Due | Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	3,988	3,694
30-59 Days Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	688	168
30-59 Days Past Due | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,111	1,990
60-89 Days Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	4,223	4,871
60-89 Days Past Due | Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
60-89 Days Past Due | Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	214
60-89 Days Past Due | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	599	0
60-89 Days Past Due | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	132	0
60-89 Days Past Due | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	267	1,438
60-89 Days Past Due | Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,557	2,134
60-89 Days Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	26	57
60-89 Days Past Due | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,642	1,028
90 Days or Greater Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	32,381	38,152
90 Days or Greater Past Due | Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
90 Days or Greater Past Due | Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
90 Days or Greater Past Due | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,423	3,302
90 Days or Greater Past Due | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	4,010	191
90 Days or Greater Past Due | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	11,086	18,658
90 Days or Greater Past Due | Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	12,170	11,724
90 Days or Greater Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,616	2,119
90 Days or Greater Past Due | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,076	2,158
Total Past Due
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	51,081	50,313
Total Past Due | Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Total Past Due | Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	5,853	214
Total Past Due | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,356	3,424
Total Past Due | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	4,382	334
Total Past Due | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	12,616	21,269
Total Past Due | Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	17,715	17,552
Total Past Due | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,330	2,344
Total Past Due | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	5,829	5,176
Current
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	8,933,296	8,284,996
Current | Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	561,691	319,452
Current | Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	596,267	619,874
Current | Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	655,833	637,065
Current | Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,601,441	2,495,903
Current | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,351,155	1,423,967
Current | Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	2,711,696	2,294,895
Current | Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	224,722	225,106
Current | Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 230,491	$ 268,734

LOANS AND ALLOWANCE FOR CREDI_9

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Nonaccrual Loans and Loans Past Due (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	$ 26,636	$ 31,114
Nonaccrual With No Related Allowance	13,700	21,404
Past Due 90 Days or Greater and Accruing	5,745	7,038
Interest Income Recognized on Nonaccrual	0	0
Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	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
Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	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 real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	1,212	2,202
Nonaccrual With No Related Allowance	257	1,411
Past Due 90 Days or Greater and Accruing	211	1,100
Interest Income Recognized on Nonaccrual	0	0
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	4,010	191
Nonaccrual With No Related Allowance	52	73
Past Due 90 Days or Greater and Accruing	0	0
Interest Income Recognized on Nonaccrual	0	0
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	10,982	16,992
Nonaccrual With No Related Allowance	8,271	14,223
Past Due 90 Days or Greater and Accruing	104	1,666
Interest Income Recognized on Nonaccrual	0	0
Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	8,368	8,901
Nonaccrual With No Related Allowance	4,678	5,307
Past Due 90 Days or Greater and Accruing	3,802	2,823
Interest Income Recognized on Nonaccrual	0	0
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	1,303	1,568
Nonaccrual With No Related Allowance	442	388
Past Due 90 Days or Greater and Accruing	313	551
Interest Income Recognized on Nonaccrual	0	0
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Nonaccrual Amortized Cost	761	1,260
Nonaccrual With No Related Allowance	0	2
Past Due 90 Days or Greater and Accruing	1,315	898
Interest Income Recognized on Nonaccrual	$ 0	$ 0

LOANS AND ALLOWANCE FOR CRED_10

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Total Loans Rated Special Mention or Lower (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 8,984,377	$ 8,335,309
Total Criticized | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	220,146	187,906
Total Classified | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	140,888	119,779
Non-Accrual | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	26,636	31,114
Substandard Accruing | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	114,252	88,665
Special Mention | Performing
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 79,258	$ 68,127

LOANS AND ALLOWANCE FOR CRED_11

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 26,636	$ 31,114
Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	13,249	7,878
Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	3,420	16,931
Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Construction and commercial multifamily | Construction | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Construction and commercial multifamily | Construction | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Construction and commercial multifamily | Construction | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Construction and commercial multifamily | Commercial multifamily | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans		0
Construction and commercial multifamily | Commercial multifamily | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Construction and commercial multifamily | Commercial multifamily | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,212	2,202
Commercial real estate | Commercial real estate owner occupied | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	633	2,793
Commercial real estate | Commercial real estate owner occupied | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Commercial real estate | Commercial real estate owner occupied | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	4,010	191
Commercial real estate | Commercial real estate non-owner occupied | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	352	384
Commercial real estate | Commercial real estate non-owner occupied | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Commercial real estate | Commercial real estate non-owner occupied | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	10,982	16,992
Commercial and industrial | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	4,813	288
Commercial and industrial | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Commercial and industrial | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	3,420	16,931
Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	8,368	8,901
Residential real estate | Residential real estate | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	6,951	3,910
Residential real estate | Residential real estate | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Residential real estate | Residential real estate | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	1,303	1,568
Consumer loans | Home equity | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	458	501
Consumer loans | Home equity | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Consumer loans | Home equity | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	761	1,260
Consumer loans | Consumer other | Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	42	2
Consumer loans | Consumer other | Investment Securities/Cash
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	0	0
Consumer loans | Consumer other | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Total loans	$ 0	$ 0

LOANS AND ALLOWANCE FOR CRED_12

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Amortized Cost Basis of Loans (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	34	421
Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	6,240	19,264
Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	10
Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0.07%	0.22%
Construction and commercial multifamily | Construction | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Construction and commercial multifamily | Construction | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Construction and commercial multifamily | Construction | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Construction and commercial multifamily | Construction | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Construction and commercial multifamily | Construction | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Construction and commercial multifamily | Construction | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0%
Construction and commercial multifamily | Commercial multifamily | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Construction and commercial multifamily | Commercial multifamily | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Construction and commercial multifamily | Commercial multifamily | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Construction and commercial multifamily | Commercial multifamily | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Construction and commercial multifamily | Commercial multifamily | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Construction and commercial multifamily | Commercial multifamily | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0%
Commercial real estate | Commercial real estate owner occupied | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Commercial real estate | Commercial real estate owner occupied | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	387
Commercial real estate | Commercial real estate owner occupied | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Commercial real estate | Commercial real estate owner occupied | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Commercial real estate | Commercial real estate owner occupied | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Commercial real estate | Commercial real estate owner occupied | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0.06%
Commercial real estate | Commercial real estate non-owner occupied | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Commercial real estate | Commercial real estate non-owner occupied | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Commercial real estate | Commercial real estate non-owner occupied | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	11,733
Commercial real estate | Commercial real estate non-owner occupied | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Commercial real estate | Commercial real estate non-owner occupied | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Commercial real estate | Commercial real estate non-owner occupied | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	$ 0
Total Class of Financing Receivable		0.85%
Commercial and industrial | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	$ 0
Commercial and industrial | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	34	34
Commercial and industrial | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	6,240	7,531
Commercial and industrial | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Commercial and industrial | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	10
Commercial and industrial | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0.46%	0.56%
Residential real estate | Residential real estate | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Residential real estate | Residential real estate | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Residential real estate | Residential real estate | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Residential real estate | Residential real estate | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Residential real estate | Residential real estate | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Residential real estate | Residential real estate | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0%
Consumer loans | Home equity | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Consumer loans | Home equity | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Consumer loans | Home equity | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Consumer loans | Home equity | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Consumer loans | Home equity | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Consumer loans | Home equity | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0%
Consumer loans | Consumer other | Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Consumer loans | Consumer other | Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Consumer loans | Consumer other | Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Consumer loans | Consumer other | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Consumer loans | Consumer other | Combination Term Extension and Principal Forgiveness
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	0	0
Consumer loans | Consumer other | Combination Term Extension and Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0%

LOANS AND ALLOWANCE FOR CRED_13

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans Modified (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Commercial loans | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (months)	0 months	0 months
Commercial loans | Construction | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Commercial loans | Commercial multifamily
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (months)	0 months	0 months
Commercial loans | Commercial multifamily | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Commercial real estate | Commercial real estate owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (months)	0 months	120 months
Commercial real estate | Commercial real estate owner occupied | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Commercial real estate | Commercial real estate non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (months)	0 months	12 months
Commercial real estate | Commercial real estate non-owner occupied | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	0%	1%
Weighted Average Term Extension (months)	17 months	34 months
Commercial and industrial | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Residential real estate | Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (months)	0 months	0 months
Residential real estate | Residential real estate | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Consumer | Home equity
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (months)	0 months	0 months
Consumer | Home equity | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Consumer | Consumer other
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (months)	0 months	0 months
Consumer | Consumer other | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0

DEPOSITS (Details)

DEPOSITS (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Deposits [Abstract]
Time less than $100,000	$ 666,406	$ 549,265
Time $100,000 through $250,000	1,158,816	642,600
Time more than $250,000	620,213	441,842
Total time deposits	$ 2,445,435	$ 1,633,707

BORROWED FUNDS - Schedule of Bo

BORROWED FUNDS - Schedule of Borrowed Funds (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Principal, Short-term debt	$ 670,000	$ 0
Principal, Long-term debt	255,595	125,509
Total borrowings	$ 925,595	$ 125,509
Weighted average rate on short-term borrowings (as percent)	5.57%	0%
Weighted average rate on long-term borrowings (as percent)	4.92%	5.52%
Weighted Average Rate	5.39%	5.52%
Advances from the FHLB
Debt Instrument [Line Items]
Principal, Short-term debt	$ 670,000	$ 0
Principal, Long-term debt	$ 134,295	$ 4,445
Weighted average rate on short-term borrowings (as percent)	5.57%	0%
Weighted average rate on long-term borrowings (as percent)	4.06%	0.71%
Subordinated borrowings
Debt Instrument [Line Items]
Principal, Long-term debt	$ 98,286	$ 98,089
Weighted average rate on long-term borrowings (as percent)	5.50%	5.50%
Junior subordinated borrowing - Trust I
Debt Instrument [Line Items]
Principal, Long-term debt	$ 15,464	$ 15,464
Weighted average rate on long-term borrowings (as percent)	7.49%	6.54%
Junior subordinated borrowing - Trust II
Debt Instrument [Line Items]
Principal, Long-term debt	$ 7,550	$ 7,511
Weighted average rate on long-term borrowings (as percent)	7.37%	6.47%

BORROWED FUNDS - Narrative (Det

BORROWED FUNDS - Narrative (Details) - USD ($)	1 Months Ended	9 Months Ended
	Jun. 30, 2022	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Line of credit, current		$ 3,000,000
Short-term debt		670,000,000	$ 0
Long-term borrowings		255,595,000	125,509,000
Variable-rate FHLB advances		0	0
Federal Reserve Bank Advances
Debt Instrument [Line Items]
Line of credit facility, remaining borrowing capacity		1,400,000,000	600,000,000
Short-term debt		0	0
Advances from the FHLB
Debt Instrument [Line Items]
Long-term line of credit		0	0
Line of credit facility, remaining borrowing capacity		2,000,000,000	1,500,000,000
Short-term debt		670,000,000	0
Long-term borrowings		134,295,000	4,445,000
Advances from the FHLB | Federal Home Loan Bank, Advances, Callable Option
Debt Instrument [Line Items]
Long-term borrowings		60,000,000	0
Federal Home Loan Bank Certificates And Obligations F H L B Amortizing Advances
Debt Instrument [Line Items]
Long-term borrowings		4,300,000	4,400,000
Subordinated borrowings
Debt Instrument [Line Items]
Long-term borrowings		98,286,000	$ 98,089,000
Subordinated borrowings | Subordinated Debt
Debt Instrument [Line Items]
Maturity period	10 years
Principal amount of debt issued	$ 100,000,000
Fixed interest rate	5.50%
Maturity period with fixed interest rate	5 years
Non callable period	5 years
Interest rate margin	2.49%
Subordinated borrowings | Debt Instrument Variable Rate Three Month SOFR | Subordinated Debt
Debt Instrument [Line Items]
Unamortized debt issuance expense		$ 1,700,000
Junior subordinated borrowing | Trust I
Debt Instrument [Line Items]
Common stock of trust		100%
Common stock of trust included in other asset		$ 500,000
Sole asset of trust in form of debt		$ 15,500,000
Variable interest rate		7.49%	6.54%
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%
Common stock of trust included in other asset		$ 200,000
Sole asset of trust in form of debt		$ 8,200,000
Variable interest rate		7.37%	6.47%
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%

BORROWED FUNDS - Schedule of Ma

BORROWED FUNDS - Schedule of Maturities of FHLBB Advances (Details) - Fixed Rate Advances $ in Thousands	Sep. 30, 2023 USD ($)
Principal
2023	$ 660,000
2024	40,014
2025	40,000
2026	30,530
2027 and beyond	33,751
Total FHLBB advances	$ 804,295
Weighted Average
Weighted Average Rate
2023	0.0557
2024	5.05%
2025	4.55%
2026	3.68%
2027 and beyond	0.0307
Total FHLB advances	5.32%

DERIVATIVE FINANCIAL INSTRUME_3

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details)	9 Months Ended
	Sep. 30, 2023 USD ($) instrument	Dec. 31, 2022 USD ($)
Derivative [Line Items]
Notional amount	$ 4,769,166,000	$ 4,524,514,000
Cash collateral pledged	0
Amortized cost of securities pledged as collateral to derivative counterparties	10,000,000
Fair value of securities as pledged collateral to derivative counterparties	9,700,000
Commercial counterparties
Derivative [Line Items]
Net asset position	64,000,000	51,200,000
Non-hedging derivatives
Derivative [Line Items]
Notional amount	6,409,000	4,114,000
Cash flow hedges
Derivative [Line Items]
Notional amount	800,000,000	800,000,000
Economic hedging
Derivative [Line Items]
Credit valuation adjustments	$ 0
Economic hedging | Interest rate swap on tax advantaged economic development bond
Derivative [Line Items]
Fixed rate of interest	5.09%
Maturity period	21 years
Economic hedging | Economic hedges
Derivative [Line Items]
Notional amount	$ 3,962,757,000	3,720,400,000
Interest rate swaps
Derivative [Line Items]
Notional amount	6,400,000
Cash collateral pledged	0	0
Interest rate swaps | Commercial counterparties
Derivative [Line Items]
Cash collateral pledged	0	0
Net asset position	300,000	1,000,000
Collateral already posted, aggregate fair value	116,600,000	96,100,000
Interest rate swaps | Institutional counterparties
Derivative [Line Items]
Cash collateral pledged	0	0
Collateral already posted, aggregate fair value	$ 300,000	1,200,000
Interest rate swaps | Minimum
Derivative [Line Items]
Derivative, term	2 years
Interest rate swaps | Maximum
Derivative [Line Items]
Derivative, term	3 years
Interest rate swaps | Cash flow hedges
Derivative [Line Items]
Number of instruments | instrument	8
Interest rate swaps | Cash flow hedges | Economic hedges
Derivative [Line Items]
Notional amount	$ 800,000,000	600,000,000
Interest rate swaps | Economic hedging | Economic hedges
Derivative [Line Items]
Notional amount	3,600,000,000	3,400,000,000
Risk participation agreements with dealer banks | Economic hedging | Economic hedges
Derivative [Line Items]
Notional amount	377,852,000	341,885,000
Forward sale commitments | Economic hedging | Economic hedges
Derivative [Line Items]
Notional amount	$ 2,300,000	900,000
Interest rate collars | Cash flow hedges
Derivative [Line Items]
Number of instruments | instrument	2
Interest rate collars | Cash flow hedges | Minimum
Derivative [Line Items]
Derivative, term	3 years
Interest rate collars | Cash flow hedges | Maximum
Derivative [Line Items]
Derivative, term	4 years
Interest rate collars | Cash flow hedges | Economic hedges
Derivative [Line Items]
Notional amount		$ 200,000,000
First Interest Rate Collars | Cash flow hedges
Derivative [Line Items]
Notional amount	$ 100,000,000
Floor interest rate	3%
Cap interest rate	5.75%
Second Interest Rate Collars | Cash flow hedges
Derivative [Line Items]
Notional amount	$ 100,000,000
Floor interest rate	3.25%
Cap interest rate	5.75%

DERIVATIVE FINANCIAL INSTRUME_4

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	$ 4,769,166	$ 4,524,514
Estimated Fair Value Asset (Liability)	(52,442)	(43,167)
Impact of settled to market contracts	38,500	38,300
Non-hedging derivatives
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	6,409	4,114
Estimated Fair Value Asset (Liability)	(9)	17
Interest rate swaps
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	6,400
Commitments to lend | Non-hedging derivatives
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	$ 6,409	$ 4,114
Weighted Average Maturity (In years)	2 months 12 days	2 months 12 days
Estimated Fair Value Asset (Liability)	$ (9)	$ 17
Cash flow hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	800,000	800,000
Estimated Fair Value Asset (Liability)	946	1,937
Cash flow hedges | Interest rate swaps | Commercial loan
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	$ 600,000	$ 400,000
Weighted Average Maturity (In years)	2 years 1 month 6 days	2 years 8 months 12 days
Weighted Average Rate, Received	3.64%	4.09%
Weighted Average Rate, Contract pay rate	5.32%	3.51%
Estimated Fair Value Asset (Liability)	$ 841	$ 0
Cash flow hedges | Interest rate swaps | Economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	800,000	600,000
Cash flow hedges | Forward starting interest rate swaps | Commercial loan
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount		$ 200,000
Weighted Average Maturity (In years)		3 years 3 months 18 days
Weighted Average Rate, Received		0%
Weighted Average Rate, Contract pay rate		3.90%
Estimated Fair Value Asset (Liability)		$ 0
Cash flow hedges | Interest rate collars | Commercial loan
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	$ 200,000	$ 200,000
Weighted Average Maturity (In years)	2 years 9 months 18 days	3 years 6 months
Estimated Fair Value Asset (Liability)	$ 105	$ 1,937
Cash flow hedges | Interest rate collars | Economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount		200,000
Economic hedges | Economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	3,962,757	3,720,400
Estimated Fair Value Asset (Liability)	(53,379)	(45,121)
Economic hedges | Interest rate swaps | Economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	3,600,000	3,400,000
Economic hedges | Interest rate swaps | Economic hedges | Commercial loan
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	$ 1,788,086	$ 1,685,263
Weighted Average Maturity (In years)	5 years	5 years 8 months 12 days
Weighted Average Rate, Received	4.30%	4.11%
Weighted Average Rate, Contract pay rate	6.42%	5.55%
Estimated Fair Value Asset (Liability)	$ (117,048)	$ (95,114)
Economic hedges | Interest rate swaps | Economic hedges | Interest rate swap on tax advantaged economic development bond
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	$ 6,421	$ 7,062
Weighted Average Maturity (In years)	6 years 2 months 12 days	6 years 10 months 24 days
Weighted Average Rate, Received	4.96%	4.49%
Weighted Average Rate, Contract pay rate	5.09%	5.09%
Estimated Fair Value Asset (Liability)	$ (30)	$ (193)
Economic hedges | Reverse interest rate swaps | Economic hedges | Commercial loan
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	$ 1,788,086	$ 1,685,263
Weighted Average Maturity (In years)	5 years	5 years 8 months 12 days
Weighted Average Rate, Received	6.42%	5.55%
Weighted Average Rate, Contract pay rate	4.30%	4.11%
Estimated Fair Value Asset (Liability)	$ 63,705	$ 50,267
Economic hedges | Risk participation agreements with dealer banks | Economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	$ 377,852	$ 341,885
Weighted Average Maturity (In years)	5 years 8 months 12 days	6 years 7 months 6 days
Estimated Fair Value Asset (Liability)	$ (16)	$ (89)
Economic hedges | Forward sale commitments | Economic hedges
Interest rate swap agreements and non-hedging derivative assets and liabilities
Notional Amount	$ 2,312	$ 927
Weighted Average Maturity (In years)	2 months 12 days	2 months 12 days
Estimated Fair Value Asset (Liability)	$ 10	$ 8

DERIVATIVE FINANCIAL INSTRUME_5

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Consolidated Statements of Income and Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Derivative [Line Items]
Unrealized (loss) recognized in accumulated other comprehensive loss	$ (2,959)	$ (5,555)	$ (9,072)	$ (5,555)
Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest expense	794	1,494	2,435	1,494
Interest rate swaps | Interest Expense
Derivative [Line Items]
Net interest expense recognized on hedged commercial loans	2,621	(136)	6,262	(136)
Interest rate swaps | Commercial loan
Derivative [Line Items]
Unrealized (loss) recognized in accumulated other comprehensive loss	(2,800)	(5,555)	(8,599)	(5,555)
Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest expense	(159)	0	(473)	0
Net tax benefit on items recognized in accumulated other comprehensive income	794	1,494	2,435	1,494
Other comprehensive loss recorded in accumulated other comprehensive income, net of reclassification adjustments and tax effects	$ (2,165)	$ (4,061)	$ (6,637)	$ (4,061)

DERIVATIVE FINANCIAL INSTRUME_6

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Economic Hedges and Non-hedging Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest rate swaps | Economic hedges | Industrial revenue bond
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	$ 88	$ 304	$ 163	$ 953
Interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	(24,728)	(53,788)	(21,934)	(177,413)
Favorable change in credit valuation adjustment recognized in other non-interest income	0	0	0	1,809
Reverse interest rate swaps | Economic hedges | Loans with commercial loan customers
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	24,728	53,788	21,934	177,413
Risk participation agreements | Economic hedges
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	65	(19)	73	(419)
Forward commitments | Economic hedges
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	(53)	(11)	2	(127)
Commitments to lend | Non-hedging derivatives
Derivative [Line Items]
Unrealized gain/(loss) recognized in other non-interest income	(46)	(100)	(26)	(108)
Realized gain in other non-interest income	$ 210	$ 78	$ 304	$ 420

DERIVATIVE FINANCIAL INSTRUME_7

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Assets Subject to an Enforceable Master Netting Arrangement (Details) - Interest rate swaps - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Offsetting of Financial Assets and Derivative Assets
Gross Amounts of Recognized Assets	$ 117,567	$ 97,270
Gross Amounts Offset in the Statements of Condition	(53,346)	(45,046)
Net Amounts of Assets Presented in the Statements of Condition	64,221	52,224
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	64,221	52,224
Institutional counterparties
Offsetting of Financial Assets and Derivative Assets
Gross Amounts of Recognized Assets	117,306	96,295
Gross Amounts Offset in the Statements of Condition	(53,346)	(45,046)
Net Amounts of Assets Presented in the Statements of Condition	63,960	51,249
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	63,960	51,249
Commercial counterparties
Offsetting of Financial Assets and Derivative Assets
Gross Amounts of Recognized Assets	261	975
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Assets Presented in the Statements of Condition	261	975
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	$ 261	$ 975

DERIVATIVE FINANCIAL INSTRUME_8

DERIVATIVE FINANCIAL INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Assets Subject to an Enforceable Master Netting Arrangement (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Offsetting of Financial Liabilities and Derivative Liabilities
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Received	$ 0
Interest rate swaps
Offsetting of Financial Liabilities and Derivative Liabilities
Gross Amounts of Recognized Liabilities	(131,495,000)	$ (103,866,000)
Gross amounts offset in the Statements of Condition	14,859,000	6,543,000
Net Amounts of Liabilities Presented in the Statements of Condition	(116,636,000)	(97,323,000)
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments	9,676,000	11,973,000
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Received	0	0
Net Amount	(106,960,000)	(85,350,000)
Interest rate swaps | Institutional counterparties
Offsetting of Financial Liabilities and Derivative Liabilities
Gross Amounts of Recognized Liabilities	(274,000)	(1,271,000)
Gross amounts offset in the Statements of Condition	2,000	36,000
Net Amounts of Liabilities Presented in the Statements of Condition	(272,000)	(1,235,000)
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments	9,676,000	11,973,000
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Received	0	0
Net Amount	9,404,000	10,738,000
Interest rate swaps | Commercial counterparties
Offsetting of Financial Liabilities and Derivative Liabilities
Gross Amounts of Recognized Liabilities	(131,221,000)	(102,595,000)
Gross amounts offset in the Statements of Condition	14,857,000	6,507,000
Net Amounts of Liabilities Presented in the Statements of Condition	(116,364,000)	(96,088,000)
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	$ (116,364,000)	$ (96,088,000)

LEASES - Narrative (Details)

LEASES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 2.2	$ 2.2	$ 6.9	$ 7.3
Minimum
Lessee, Lease, Description [Line Items]
Operating lease contract term			1 month
Maximum
Lessee, Lease, Description [Line Items]
Operating lease contract term			16 years

LEASES - Schedule of ROU Assets

LEASES - Schedule of ROU Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Lease Right-of-Use Assets
Operating lease right-of-use assets	$ 48,173	$ 46,411
Finance lease right-of-use assets	5,727	6,151
Total Lease Right-of-Use Assets	53,900	52,562
Lease Liabilities
Operating lease liabilities	54,128	53,736
Finance lease liabilities	8,831	9,306
Total Lease Liabilities	$ 62,959	$ 63,042
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Premises and equipment, net	Premises and equipment, net
Operating Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities

LEASES - Schedule of Supplement

LEASES - Schedule of Supplemental Information Related to Leases (Details)	Sep. 30, 2023	Dec. 31, 2022
Weighted-Average Remaining Lease Term (in years)
Operating leases	8 years 6 months	9 years 3 months 18 days
Finance leases	11 years 1 month 6 days	11 years 9 months 18 days
Weighted-Average Discount Rate
Operating leases	2.85%	2.56%
Finance leases	5%	5%

LEASES - Schedule of Suppleme_2

LEASES - Schedule of Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 2,267	$ 2,518	$ 6,800	$ 7,657
Operating cash flows from finance leases	112	119	336	359
Financing cash flows from finance leases	$ 148	$ 139	$ 443	$ 414

LEASES - Schedule of Maturity A

LEASES - Schedule of Maturity Analysis of Operating and Finance Lease Liability (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Operating Leases
2023	$ 2,399
2024	9,470
2025	8,259
2026	7,262
2027	6,383
Thereafter	26,594
Total undiscounted lease payments	60,367
Less amounts representing interest	(6,239)
Lease liability	54,128	$ 53,736
Finance Leases
2023	260
2024	1,039
2025	1,039
2026	1,039
2027	1,039
Thereafter	7,075
Total undiscounted lease payments	11,491
Less amounts representing interest	(2,660)
Lease liability	$ 8,831	$ 9,306

CAPITAL RATIOS AND SHAREHOLDE_3

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Actual and Required Capital Ratios (Details)	Sep. 30, 2023	Dec. 31, 2022
Tier 1 capital to risk-weighted assets
Total capital to risk-weighted assets	0.144	0.146
Common equity tier 1 capital to risk-weighted assets	12.10%	12.40%
Tier 1 capital to risk-weighted assets	0.123	0.126
Tier 1 capital to average assets	0.098	0.102
Total capital to risk-weighted assets, Minimum Capital Requirement	0.080
Common equity tier 1 capital to risk-weighted assets, Minimum Capital Requirement	0.045
Tier 1 capital to risk-weighted assets, Minimum Capital Requirement	0.060
Tier 1 capital to average assets, Minimum Capital Requirement	0.040
Bank
Tier 1 capital to risk-weighted assets
Total capital to risk-weighted assets	0.134	0.136
Common equity tier 1 capital to risk-weighted assets	12.40%	12.60%
Tier 1 capital to risk-weighted assets	0.124	0.126
Tier 1 capital to average assets	0.097	0.102

CAPITAL RATIOS AND SHAREHOLDE_4

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Components of AOCI (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders’ equity	$ 951,009	$ 973,381	$ 954,062	$ 942,562	$ 1,014,050	$ 1,182,435
Accumulated other comprehensive loss
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders’ equity	(218,386)	(186,240)	(181,052)	(188,494)	(122,999)	(3,243)
Net unrealized holding (loss) on AFS securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income, before tax	(278,285)		(236,887)
Income taxes related to items of accumulated other comprehensive income	72,030		61,329
Total shareholders’ equity	(206,255)	(176,274)	(175,558)	(182,588)	(121,154)	(1,398)
Net unrealized (loss) on cash flow hedging derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income, before tax	(15,739)		(6,667)
Income taxes related to items of accumulated other comprehensive income	4,224		1,789
Total shareholders’ equity	(11,515)	(9,350)	(4,878)	(4,061)	0	0
Net unrealized holding (loss) on pension plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive income, before tax	(844)		(844)
Income taxes related to items of accumulated other comprehensive income	228		228
Total shareholders’ equity	$ (616)	$ (616)	$ (616)	$ (1,845)	$ (1,845)	$ (1,845)

CAPITAL RATIOS AND SHAREHOLDE_5

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Components of OCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Net unrealized (losses) arising during the period
Net of Tax	$ (32,263)	$ (65,495)	$ (37,680)	$ (185,247)
Less: reclassification adjustment for gains (losses) realized in net income
Net of Tax	(117)	0	(346)	4
Other comprehensive income (loss)
Before Tax	(43,484)	(88,628)	(50,470)	(250,488)
Tax Effect	11,338	23,133	13,136	65,237
Total other comprehensive (loss)	(32,146)	(65,495)	(37,334)	(185,251)
Net unrealized holding (loss) on AFS securities
Net unrealized (losses) arising during the period
Before Tax	(40,525)	(83,073)	(41,398)	(244,927)
Tax Effect	10,544	21,639	10,701	63,741
Net of Tax	(29,981)	(61,434)	(30,697)	(181,186)
Less: reclassification adjustment for gains (losses) realized in net income
Before Tax	0	0	0	6
Tax Effect	0	0	0	(2)
Net of Tax	0	0	0	4
Other comprehensive income (loss)
Before Tax	(40,525)	(83,073)	(41,398)	(244,933)
Tax Effect	10,544	21,639	10,701	63,743
Total other comprehensive (loss)	(29,981)	(61,434)	(30,697)	(181,190)
Net unrealized (loss) on cash flow hedging derivatives
Net unrealized (losses) arising during the period
Before Tax	(3,118)	(5,555)	(9,545)	(5,555)
Tax Effect	836	1,494	2,562	1,494
Net of Tax	(2,282)	(4,061)	(6,983)	(4,061)
Less: reclassification adjustment for gains (losses) realized in net income
Before Tax	(159)	0	(473)	0
Tax Effect	42	0	127	0
Net of Tax	(117)	0	(346)	0
Other comprehensive income (loss)
Before Tax	(2,959)	(5,555)	(9,072)	(5,555)
Tax Effect	794	1,494	2,435	1,494
Total other comprehensive (loss)	$ (2,165)	$ (4,061)	$ (6,637)	$ (4,061)

CAPITAL RATIOS AND SHAREHOLDE_6

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Reclassified of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at Beginning of Period	$ 973,381	$ 1,014,050	$ 954,062	$ 1,182,435
Other comprehensive (loss) before reclassifications	(32,263)	(65,495)	(37,680)	(185,247)
Less: amounts reclassified from accumulated other comprehensive (loss)	(117)	0	(346)	4
Total other comprehensive (loss)	(32,146)	(65,495)	(37,334)	(185,251)
Balance at End of Period	951,009	942,562	951,009	942,562
Net unrealized holding (loss) on AFS securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at Beginning of Period	(176,274)	(121,154)	(175,558)	(1,398)
Other comprehensive (loss) before reclassifications	(29,981)	(61,434)	(30,697)	(181,186)
Less: amounts reclassified from accumulated other comprehensive (loss)	0	0	0	4
Total other comprehensive (loss)	(29,981)	(61,434)	(30,697)	(181,190)
Balance at End of Period	(206,255)	(182,588)	(206,255)	(182,588)
Net loss on effective cash flow hedging derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at Beginning of Period	(9,350)	0	(4,878)	0
Other comprehensive (loss) before reclassifications	(2,282)	(4,061)	(6,983)	(4,061)
Less: amounts reclassified from accumulated other comprehensive (loss)	(117)	0	(346)	0
Total other comprehensive (loss)	(2,165)	(4,061)	(6,637)	(4,061)
Balance at End of Period	(11,515)	(4,061)	(11,515)	(4,061)
Net unrealized holding loss on pension plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at Beginning of Period	(616)	(1,845)	(616)	(1,845)
Other comprehensive (loss) before reclassifications		0	0
Less: amounts reclassified from accumulated other comprehensive (loss)	0	0	0	0
Total other comprehensive (loss)	0	0	0	0
Balance at End of Period	(616)	(1,845)	(616)	(1,845)
Accumulated other comprehensive loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at Beginning of Period	(186,240)	(122,999)	(181,052)	(3,243)
Total other comprehensive (loss)	(32,146)	(65,495)	(37,334)	(185,251)
Balance at End of Period	$ (218,386)	$ (188,494)	$ (218,386)	$ (188,494)

CAPITAL RATIOS AND SHAREHOLDE_7

CAPITAL RATIOS AND SHAREHOLDERS' EQUITY - Amounts Reclassified Out of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest expense	$ 17,465	$ 16,251	$ 51,165	$ 53,283
Interest expense	(57,687)	(11,587)	(145,136)	(23,368)
Tax expense/benefit	(3,741)	(4,941)	(13,233)	(16,058)
Amount Reclassified From Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Net of tax	(117)	0	(346)	4
Net unrealized holding (loss) on AFS securities | Amount Reclassified From Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest expense	0	0	0	6
Tax expense/benefit	0	0	0	(2)
Net of tax	0	0	0	4
Net unrealized (loss) on cash flow hedging derivatives | Amount Reclassified From Accumulated Other Comprehensive Income (loss)
Amounts reclassified out of each component of accumulated other comprehensive income
Non-interest expense	0	0	0	0
Interest expense	(159)	0	(473)	0
Tax expense/benefit	42	0	127	0
Net of tax	$ (117)	$ 0	$ (346)	$ 0

EARNINGS PER SHARE - Schedule o

EARNINGS PER SHARE - Schedule of Earnings per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings per share
Net income	$ 19,545	$ 18,717	$ 71,043	$ 62,028
Average number of common shares issued (in shares)	51,903	51,903	51,903	51,903
Less: average number of treasury shares (in shares)	7,916	6,433	7,675	5,068
Less: average number of unvested stock award shares (in shares)	823	770	793	779
Average number of basic shares outstanding (in shares)	43,164	44,700	43,435	46,056
Average number of diluted shares outstanding (in shares)	43,347	45,034	43,640	46,396
Basic earnings per common share (in dollars per share)	$ 0.45	$ 0.42	$ 1.64	$ 1.35
Diluted earnings per common share (in dollars per share)	$ 0.45	$ 0.42	$ 1.63	$ 1.34
Unvested stock award shares
Earnings per share
Plus: dilutive effect (in shares)	183	330	205	336
Stock Options Outstanding
Earnings per share
Plus: dilutive effect (in shares)	0	4	0	4

EARNINGS PER SHARE - Narrative

EARNINGS PER SHARE - Narrative (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Unvested stock award shares
Anti-dilutive securities
Securities excluded from the earnings per share calculations (in shares)	639	440	569	448
Stock Options Outstanding
Anti-dilutive securities
Securities excluded from the earnings per share calculations (in shares)	49	68	49	69

STOCK-BASED COMPENSATION PLAN_2

STOCK-BASED COMPENSATION PLANS - Schedule of Activity (Details) - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Non-Vested Stock Awards Outstanding
Number of Shares
Balance at the beginning of the period (in shares)			704
Granted (in shares)			400
Acquired (in shares)			0
Stock awards vested (in shares)			(236)
Forfeited (in shares)			(72)
Expired (in shares)			0
Balance at the end of the period (in shares)	796		796
Weighted-Average Grant Date Fair Value
Balance at the beginning of the period (in dollars per share)			$ 22.85
Granted (in dollars per share)			26.87
Acquired (in dollars per share)			0
Stock awards vested (in dollars per share)			20.91
Forfeited (in dollars per share)			25.48
Expired (in dollars per share)			0
Balance at the end of the period (in dollars per share)	$ 24.92		$ 24.92
Stock Options Outstanding
Number of Shares
Stock awards vested (in shares)	(58)	(120)	(236)	(230)
Number of Shares
Balance at the beginning of the period (in shares)			49
Granted (in shares)			0
Acquired (in shares)			0
Stock options exercised (in shares)			0
Forfeited (in shares)			0
Expired (in shares)			0
Balance at the end of the period (in shares)	49		49
Weighted-Average Exercise Price
Balance at the beginning of the period (in dollars per share)			$ 26.46
Granted (in dollars per share)			0
Acquired (in dollars per share)			0
Stock options exercised (in dollars per share)			0
Forfeited (in dollars per share)			0
Expired (in dollars per share)			0
Balance at the end of the period (in dollars per share)	$ 26.46		$ 26.46

STOCK-BASED COMPENSATION PLAN_3

STOCK-BASED COMPENSATION PLANS - Narrative (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of stock options			$ 0	$ 269
Stock Options Outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercise of stock options	$ 0	$ 245	$ 0	$ 269
Stock awards vested (in shares)	58	120	236	230
Total compensation cost			$ 5,500	$ 5,700
Non-Vested Stock Awards Outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock awards vested (in shares)			236
Total compensation cost	$ 2,100	$ 1,700

FAIR VALUE MEASUREMENTS - Sched

FAIR VALUE MEASUREMENTS - Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	$ 6,200	$ 6,700
Securities available for sale, at fair value	1,260,391	1,423,200
Equity securities	12,325	12,856
U.S Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	7,873	11,973
Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	58,694	63,335
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	38,240	40,510
Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	656	656
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	6,171	6,708
Securities available for sale, at fair value	1,260,391	1,423,200
Equity securities	12,325	12,856
Loans held for investment at fair value	8,757,345	8,194,110
Loans held for sale	2,342	4,311
Derivative assets	64,161	54,241
Derivative liabilities	116,603	97,030
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Securities available for sale, at fair value	7,873	11,973
Equity securities	12,325	12,856
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 securities	0	0
Securities available for sale, at fair value	1,248,558	1,407,227
Equity securities	0	0
Loans held for investment at fair value	0	0
Loans held for sale	2,342	942
Derivative assets	64,151	54,216
Derivative liabilities	116,594	97,030
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	6,171	6,708
Securities available for sale, at fair value	3,960	4,000
Equity securities	0	0
Loans held for investment at fair value	8,757,345	8,194,110
Loans held for sale	0	3,369
Derivative assets	10	25
Derivative liabilities	9	0
Recurring | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	6,171	6,708
Equity securities	12,325	12,856
Loans held for investment at fair value	408	605
Loans held for sale	2,342	942
Derivative assets	64,161	54,241
Capitalized servicing rights	1,706	1,846
Derivative liabilities	116,603	97,030
Recurring | Fair Value | U.S Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	7,873	11,973
Recurring | Fair Value | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	58,694	63,335
Recurring | Fair Value | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	460,356	531,945
Recurring | Fair Value | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	483,201	546,313
Recurring | Fair Value | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	211,371	228,468
Recurring | Fair Value | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	38,240	40,510
Recurring | Fair Value | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	656
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Equity securities	12,325	12,856
Loans held for investment at fair value	0	0
Loans held for sale	0	0
Derivative assets	0	0
Capitalized servicing rights	0	0
Derivative liabilities	0	0
Recurring | Level 1 | U.S Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	7,873	11,973
Recurring | Level 1 | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 1 | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	0
Equity securities	0	0
Loans held for investment at fair value	0	0
Loans held for sale	2,342	942
Derivative assets	64,151	54,216
Capitalized servicing rights	0	0
Derivative liabilities	116,594	97,030
Recurring | Level 2 | U.S Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 2 | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	58,694	63,335
Recurring | Level 2 | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	460,356	531,945
Recurring | Level 2 | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	483,201	546,313
Recurring | Level 2 | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	211,371	228,468
Recurring | Level 2 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	34,280	36,510
Recurring | Level 2 | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	656
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	6,171	6,708
Securities available for sale, at fair value		4,000
Equity securities	0	0
Loans held for investment at fair value	408	605
Loans held for sale	0	0
Derivative assets	10	25
Capitalized servicing rights	1,706	1,846
Derivative liabilities	9	0
Recurring | Level 3 | U.S Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	0	0
Recurring | Level 3 | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	3,960	$ 4,000
Recurring | Level 3 | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Securities available for sale, at fair value	$ 0

FAIR VALUE MEASUREMENTS - Narra

FAIR VALUE MEASUREMENTS - Narrative (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Jan. 01, 2020 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) security	Sep. 30, 2022 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of securities in the portfolio (security) | security				1
Write-off		$ 6,744	$ 7,424	$ 22,365	$ 15,063
Continuing Operations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payments for origination of mortgage loans held-for-sale		26,800	6,000	56,200	16,100
Proceeds from sale and collection of loans held-for-sale		33,100	6,500	54,800	21,600
Continuing Operations | Loans Held for Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
(Losses) gains in fair value of loans held for sale included in earnings		$ (94)	$ (12)	$ 15	$ (173)
Impact of ASU No. 2022-02 Adoption | Loans Held for Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Write-off	$ (11,200)

FAIR VALUE MEASUREMENTS - Sch_2

FAIR VALUE MEASUREMENTS - Schedule of Loans Held for Investment (Details) - Loans Held for Investment - Continuing Operations - Recurring - Level 2 - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate Fair Value	$ 408	$ 605
Aggregate Unpaid Principal	9,064	10,948
Aggregate Fair Value Less Aggregate Unpaid Principal	$ (8,656)	$ (10,343)

FAIR VALUE MEASUREMENTS - Sch_3

FAIR VALUE MEASUREMENTS - Schedule of Loans Held for Sale (Details) - Level 2 - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Loans Held for Sale
Aggregate Fair Value	$ 2,342	$ 942
Recurring
Loans Held for Sale
Aggregate Fair Value	2,342	942
Continuing Operations | Recurring | Loans Held for Sale
Loans Held for Sale
Aggregate Fair Value	2,342	942
Aggregate Unpaid Principal	2,312	927
Aggregate Fair Value Less Aggregate Unpaid Principal	$ 30	$ 15

FAIR VALUE MEASUREMENTS - Sch_4

FAIR VALUE MEASUREMENTS - Schedule of Changes in Level 3 Assets and Liabilities that were Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
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	$ 26	$ 41	$ 146	$ 171
Unrealized (loss)/gain relating to instruments still held at the end of the period	(9)	26	(9)	26
Derivative Asset (Liability)
Beginning balance	37	26	17	124
Unrealized (loss)/gain, net recognized in other non-interest income	26	41	146	171
Transfers to held for sale loans	(72)	(52)	(172)	(280)
Ending balance	(9)	15	(9)	15
Forward Commitments
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	(53)	(11)	2	(127)
Unrealized (loss)/gain relating to instruments still held at the end of the period	10	18	10	18
Derivative Asset (Liability)
Beginning balance	63	18	8	134
Unrealized (loss)/gain, net recognized in other non-interest income	(53)	(11)	2	(127)
Ending balance	10	7	10	7
Trading Security
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	6,405	7,040	6,708	8,354
Unrealized (loss)/gain, net recognized in other non-interest income	(19)	(23)	104	(933)
Paydown of asset	(215)	(205)	(641)	(609)
Balance at the end of the period	6,171	6,812	6,171	6,812
Unrealized (loss)/gain relating to instruments still held at the end of the period	(251)	(459)	(251)	(459)
Derivative Asset (Liability)
Unrealized (loss)/gain, net recognized in other non-interest income	(19)	(23)	104	(933)
Securities Available for Sale
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	3,930	4,020	4,000	4,030
Unrealized gain included in accumulated other comprehensive income	30	(100)	(40)	(110)
Balance at the end of the period	3,960	3,920	3,960	3,920
Unrealized (loss)/gain relating to instruments still held at the end of the period	(40)	(80)	(40)	(80)
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	401	1,049	605	1,200
Unrealized (loss)/gain, net recognized in other non-interest income	28	(6)	(119)	462
Paydown of asset	(21)	(247)	(78)	(866)
Balance at the end of the period	408	796	408	796
Unrealized (loss)/gain relating to instruments still held at the end of the period	0	0	0	0
Derivative Asset (Liability)
Unrealized (loss)/gain, net recognized in other non-interest income	28	(6)	(119)	462
Additions to servicing rights				0
Capitalized Servicing Rights
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	1,886	1,906	1,846	1,966
Unrealized (loss)/gain, net recognized in other non-interest income	(180)	120	(140)	60
Balance at the end of the period	1,706	2,026	1,706	2,026
Unrealized (loss)/gain relating to instruments still held at the end of the period	0	0	0	0
Derivative Asset (Liability)
Unrealized (loss)/gain, net recognized in other non-interest income	$ (180)	$ 120	$ (140)	$ 60

FAIR VALUE MEASUREMENTS - Sch_5

FAIR VALUE MEASUREMENTS - Schedule of Quantitative Information about the Significant Unobservable Inputs within Level 3 (Details) $ in Thousands	Sep. 30, 2023 USD ($) uSDPerLoan	Dec. 31, 2022 USD ($) uSDPerLoan
Quantitative information about the significant unobservable inputs within Level 3
Trading Securities	$ 6,171	$ 6,708
Level 3 | Recurring
Quantitative information about the significant unobservable inputs within Level 3
Trading Securities	6,171	6,708
AFS Securities	3,960
Loans held for investment	408	605
Total	12,246	13,184
Level 3 | Recurring | Commitments to lend
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset	(9)	17
Level 3 | Recurring | Forward commitments
Quantitative information about the significant unobservable inputs within Level 3
Derivative asset	10	8
Level 3 | Recurring | Capitalized servicing rights
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights	$ 1,706	$ 1,846
Level 3 | Recurring | Discount Rate | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Trading security, significant unobservable input value	0.0514	0.0592
Loan held for investment, Significant Unobservable Input Value	0.2500	0.2500
Level 3 | Recurring | Discount Rate | Discounted Cash Flow | Capitalized servicing rights
Quantitative information about the significant unobservable inputs within Level 3
Capitalized Servicing Rights, Significant Unobservable Input Value	0.1058	0.0956
Level 3 | Recurring | Price | Indication from Market Maker
Quantitative information about the significant unobservable inputs within Level 3
AFS Securities, Significant Unobservable Input Value	0.9900	1
Level 3 | Recurring | Collateral Value | Discounted Cash Flow | Minimum
Quantitative information about the significant unobservable inputs within Level 3
Loan held for investment, Significant Unobservable Input Value	0	0
Level 3 | Recurring | Collateral Value | Discounted Cash Flow | Maximum
Quantitative information about the significant unobservable inputs within Level 3
Loan held for investment, Significant Unobservable Input Value	18,600,000	20,400,000
Level 3 | Recurring | Closing Ratio | Historical Trend | Commitments to lend
Quantitative information about the significant unobservable inputs within Level 3
Commitments, Significant Unobservable Input Value	0.8039	0.8063
Level 3 | Recurring | Closing Ratio | Historical Trend | Forward commitments
Quantitative information about the significant unobservable inputs within Level 3
Commitments, Significant Unobservable Input Value	0.8039	0.8063
Level 3 | Recurring | Origination Costs, per loan | Pricing Model | Commitments to lend
Quantitative information about the significant unobservable inputs within Level 3
Commitments, Significant Unobservable Input Value | uSDPerLoan	3,000	2,000
Level 3 | Recurring | Origination Costs, per loan | Pricing Model | Forward commitments
Quantitative information about the significant unobservable inputs within Level 3
Commitments, Significant Unobservable Input Value | uSDPerLoan	3,000	2,000
Level 3 | Recurring | Constant Prepayment Rate (CPR) | Discounted Cash Flow | Capitalized servicing rights
Quantitative information about the significant unobservable inputs within Level 3
Capitalized Servicing Rights, Significant Unobservable Input Value	0.0862	0.1107

FAIR VALUE MEASUREMENTS - Sch_6

FAIR VALUE MEASUREMENTS - Schedule of Non-recurring Fair Value Measurements (Details) - Level 3 - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Quantitative information about the significant unobservable inputs within Level 3
Loans held for sale	$ 0	$ 3,369
Non-recurring
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated	5,676	14,571
Loans held for sale	0	3,369
Capitalized servicing rights	10,850	11,201
Total	$ 16,526	$ 29,141

FAIR VALUE MEASUREMENTS - Sch_7

FAIR VALUE MEASUREMENTS - Schedule of Significant Unobservable Inputs for Non-recurring Assets (Details) - Level 3 $ in Thousands	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Quantitative information about the significant unobservable inputs within Level 3
Loans held for sale	$ 0	$ 3,369
Non-recurring
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated	5,676	14,571
Loans held for sale	0	3,369
Capitalized servicing rights	10,850	11,201
Total	16,526	29,141
Non-recurring | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated	$ 5,676	14,571
Loans held for sale		$ 3,369
Non-recurring | Appraised Value | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Loans held for sale, measurement input		3,369,000
Non-recurring | Minimum | Discounted Cash Flow - Loss Severity | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated impaired loans, unobservable inputs, range, measurement input	1	1
Non-recurring | Minimum | Appraised Value | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated impaired loans, unobservable inputs, range, measurement input	0	0
Non-recurring | Maximum | Discounted Cash Flow - Loss Severity | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated impaired loans, unobservable inputs, range, measurement input	0.0001	0.7474
Non-recurring | Maximum | Appraised Value | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated impaired loans, unobservable inputs, range, measurement input	3,361,000	2,160,000
Non-recurring | Weighted Average | Discounted Cash Flow - Loss Severity | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated impaired loans, unobservable inputs, range, measurement input	0.6044	0.4002
Non-recurring | Weighted Average | Appraised Value | Fair Value of Collateral
Quantitative information about the significant unobservable inputs within Level 3
Individually evaluated impaired loans, unobservable inputs, range, measurement input	2,336,000	643,000
Non-recurring | Capitalized servicing rights | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights	$ 10,850	$ 11,201
Non-recurring | Capitalized servicing rights | Minimum | Constant Prepayment Rate (CPR) | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.0478	0.0581
Non-recurring | Capitalized servicing rights | Minimum | Discount Rate | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.0959	0.0959
Non-recurring | Capitalized servicing rights | Maximum | Constant Prepayment Rate (CPR) | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.1222	0.1318
Non-recurring | Capitalized servicing rights | Maximum | Discount Rate | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.1971	0.2270
Non-recurring | Capitalized servicing rights | Weighted Average | Constant Prepayment Rate (CPR) | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.1170	0.1094
Non-recurring | Capitalized servicing rights | Weighted Average | Discount Rate | Discounted Cash Flow
Quantitative information about the significant unobservable inputs within Level 3
Capitalized servicing rights, measurement input	0.1526	0.1683

FAIR VALUE MEASUREMENTS - Sch_8

FAIR VALUE MEASUREMENTS - Schedule of Estimated Non-recurring Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financial Assets
Trading securities	$ 6,200	$ 6,700
Equity securities	12,325	12,856
Securities available for sale, at fair value	1,260,391	1,423,200
Securities held to maturity	453,729	507,464
Carrying Amount
Financial Assets
Cash and cash equivalents	663,470	685,355
Trading securities	6,171	6,708
Equity securities	12,325	12,856
Securities available for sale, at fair value	1,260,391	1,423,200
Securities held to maturity	552,981	583,453
Federal Home Loan Bank stock	38,912	7,219
Net loans	8,881,585	8,239,039
Loans held for sale	2,342	4,311
Accrued interest receivable	52,669	46,868
Derivative assets	64,161	54,241
Financial Liabilities
Total deposits	9,980,544	10,327,269
Short-term debt	670,000	0
Long-term Federal Home Loan Bank advances and other	134,295	4,445
Subordinated borrowings	121,300	121,064
Accrued interest payable	12,794	1,610
Derivative liabilities	116,603	97,030
Fair Value
Financial Assets
Cash and cash equivalents	663,470	685,355
Trading securities	6,171	6,708
Equity securities	12,325	12,856
Securities available for sale, at fair value	1,260,391	1,423,200
Securities held to maturity	453,729	507,464
Net loans	8,757,345	8,194,110
Loans held for sale	2,342	4,311
Accrued interest receivable	52,669	46,868
Derivative assets	64,161	54,241
Financial Liabilities
Total deposits	9,951,662	10,283,543
Short-term debt	669,981	0
Long-term Federal Home Loan Bank advances and other	129,182	2,782
Subordinated borrowings	94,192	110,853
Accrued interest payable	12,794	1,610
Derivative liabilities	116,603	97,030
Level 1
Financial Assets
Cash and cash equivalents	663,470	685,355
Trading securities	0	0
Equity securities	12,325	12,856
Securities available for sale, at fair value	7,873	11,973
Securities held to maturity	0	0
Net loans	0	0
Loans held for sale	0	0
Accrued interest receivable	0	0
Derivative assets	0	0
Financial Liabilities
Total deposits	0	0
Short-term debt	0	0
Long-term Federal Home Loan Bank advances and other	0	0
Subordinated borrowings	0	0
Accrued interest payable	0	0
Derivative liabilities	0	0
Level 2
Financial Assets
Cash and cash equivalents	0	0
Trading securities	0	0
Equity securities	0	0
Securities available for sale, at fair value	1,248,558	1,407,227
Securities held to maturity	452,178	505,508
Net loans	0	0
Loans held for sale	2,342	942
Accrued interest receivable	52,669	46,868
Derivative assets	64,151	54,216
Financial Liabilities
Total deposits	9,947,373	10,283,543
Short-term debt	669,981	0
Long-term Federal Home Loan Bank advances and other	129,182	2,782
Subordinated borrowings	94,192	110,853
Accrued interest payable	12,794	1,610
Derivative liabilities	116,594	97,030
Level 3
Financial Assets
Cash and cash equivalents	0	0
Trading securities	6,171	6,708
Equity securities	0	0
Securities available for sale, at fair value	3,960	4,000
Securities held to maturity	1,551	1,956
Net loans	8,757,345	8,194,110
Loans held for sale	0	3,369
Accrued interest receivable	0	0
Derivative assets	10	25
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
Accrued interest payable	0	0
Derivative liabilities	$ 9	$ 0

NET INTEREST INCOME AFTER PRO_3

NET INTEREST INCOME AFTER PROVISION/(BENEFIT) FOR CREDIT LOSSES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Banking and Thrift, Interest [Abstract]
Net interest income	$ 90,334	$ 92,084	$ 280,626	$ 242,505
Provision/(benefit) for credit losses	8,000	3,000	24,999	(1,000)
Net interest after provision for credit losses	$ 82,334	$ 89,084	$ 255,627	$ 243,505

Uncategorized Items - bhlb-2023

Label	Element	Value
Repayments of Subordinated Debt	us-gaap_RepaymentsOfSubordinatedDebt	$ 0
Repayments of Subordinated Debt	us-gaap_RepaymentsOfSubordinatedDebt	$ 75,000,000