Berkshire Hills Bancorp (BHLB) 10-K 3 Mar 25 2024 FY Annual report Financial data

Cover Page

Cover Page - USD ($) $ in Billions	12 Months Ended
	Dec. 31, 2024	Feb. 24, 2025	Jun. 30, 2024
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2024
Current Fiscal Year End Date	--12-31
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	617
Local Phone Number	641-9206
Title of 12(b) Security	Common stock, par value $0.01 per share
Trading Symbol	BHLB
Security Exchange Name	NYSE
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	true
Document Financial Statement Error Correction [Flag]	false
Entity Shell Company	false
Entity Public Float			$ 1
Entity Common Stock, Shares Outstanding (in shares)		46,404,929
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE: None.
Entity Central Index Key	0001108134
Amendment Flag	false
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	FY

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2024
Auditor Information [Abstract]
Auditor Name	Crowe LLP
Auditor Location	Boston, Massachusetts
Auditor Firm ID	173

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Assets
Cash and due from banks	$ 182,776	$ 148,148
Short-term investments	945,633	1,055,096
Total cash and cash equivalents	1,128,409	1,203,244
Trading security, at fair value	5,258	6,142
Equity securities, at fair value	655	13,029
Securities available for sale, at fair value	655,723	1,022,285
Securities held to maturity (fair values of $433,382 in 2024 and $476,228 in 2023)	507,658	543,351
Federal Home Loan Bank stock and other restricted securities	19,565	22,689
Total securities	1,188,859	1,607,496
Less: Allowance for credit losses on securities held to maturity	(64)	(68)
Net Securities	1,188,795	1,607,428
Loans held for sale	3,076	2,237
Total loans	9,384,994	9,039,686
Less: Allowance for credit losses on loans	(114,700)	(105,357)
Net loans	9,270,294	8,934,329
Premises and equipment, net	56,609	68,915
Other intangible assets	15,064	19,664
Cash surrender value of bank-owned life insurance	245,789	242,309
Other assets	358,442	341,757
Assets held for sale	6,930	10,938
Total assets	12,273,408	12,430,821
Liabilities
Demand deposits	2,324,879	2,469,164
NOW and other deposits	841,406	858,644
Money market deposits	3,610,521	3,565,516
Savings deposits	1,021,716	1,053,810
Time deposits	2,576,682	2,686,250
Total deposits	10,375,204	10,633,384
Short-term debt	103,500	260,000
Long-term Federal Home Loan Bank advances	212,982	125,223
Subordinated notes	121,612	121,363
Total borrowings	438,094	506,586
Other liabilities	292,686	278,630
Total liabilities	11,105,984	11,418,600
Shareholders’ equity
Common stock ($0.01 par value; 100,000,000 shares authorized and 51,903,190 shares issued and 46,424,016 shares outstanding in 2024; 100,000,000 shares authorized; 51,903,190 shares issued, and 43,500,872 shares outstanding in 2023)	562	528
Additional paid-in capital - common stock	1,430,532	1,423,273
Unearned compensation	(10,106)	(10,109)
Retained (deficit)	(3,080)	(33,136)
Accumulated other comprehensive (loss)	(106,343)	(143,016)
Treasury stock, at cost (5,479,174 shares in 2024 and 8,402,318 shares in 2023)	(144,141)	(225,319)
Total shareholders’ equity	1,167,424	1,012,221
Total liabilities and shareholders’ equity	$ 12,273,408	$ 12,430,821

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Securities held to maturity fair value	$ 433,382	$ 476,228
Common stock, par value (in USD 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)	46,424,016	43,500,872
Treasury stock, shares (in shares)	5,479,174	8,402,318

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest and dividend income
Loans	$ 556,527	$ 512,535	$ 335,312
Securities and other	57,411	63,764	51,945
Total interest and dividend income	613,938	576,299	387,257
Interest expense
Deposits	228,015	158,913	33,437
Borrowings and subordinated notes	34,337	48,339	9,223
Total interest expense	262,352	207,252	42,660
Net interest income	351,586	369,047	344,597
Non-interest income
Other	13,576	2,045	6,973
Fair value adjustments on securities	7	513	(2,037)
(Loss)/gain on sale of securities	(49,937)	(25,057)	6
Gain on sale of business operations and assets, net	16,241	0	0
Total non-interest income	48,414	42,782	68,937
Total net revenue	400,000	411,829	413,534
Provision expense for credit losses	23,999	31,999	11,000
Non-interest expense
Compensation and benefits	160,453	159,281	152,741
Occupancy and equipment	31,469	35,718	37,638
Technology	40,395	41,878	35,586
Professional services	10,307	11,643	12,043
Regulatory expenses	7,395	7,019	3,105
Amortization of intangible assets	4,601	4,820	5,134
Marketing	4,522	5,377	5,103
Merger, restructuring and other non-operating expenses	9,493	6,261	8,909
Other	27,851	29,511	28,457
Total non-interest expense	296,486	301,508	288,716
Income before income taxes	79,515	78,322	113,818
Income tax expense	18,512	8,724	21,285
Net income	$ 61,003	$ 69,598	$ 92,533
Basic earnings per share (in dollars per share)	$ 1.44	$ 1.61	$ 2.03
Diluted earnings per share (in dollars per share)	$ 1.43	$ 1.60	$ 2.02
Weighted average common shares outstanding:
Basic (in shares)	42,508	43,288	45,564
Diluted (in shares)	42,761	43,504	45,914
Total fee income
Non-interest income
Total fee income	$ 68,527	$ 65,281	$ 63,995
Deposit related fees
Non-interest income
Total fee income	33,759	34,155	32,026
Loan related fees
Non-interest income
Total fee income	11,280	10,595	9,467
Gain on SBA loan sales
Non-interest income
Total fee income	12,648	10,334	12,494
Wealth management fees
Non-interest income
Total fee income	$ 10,840	$ 10,197	$ 10,008

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 61,003	$ 69,598	$ 92,533
Other comprehensive income/(loss), before tax:
Changes in unrealized gains and losses on securities available-for-sale	46,800	47,960	(235,081)
Changes in unrealized gains and losses on cash flow hedges	1,228	2,402	(6,667)
Changes in unrealized gains and losses on pension	893	316	1,674
Total other comprehensive income/(loss), before tax	48,921	50,678	(240,074)
Income taxes related to other comprehensive income/(loss):
Changes in unrealized gains and losses on securities available-for-sale	(11,685)	(11,928)	60,922
Changes in unrealized gains and losses on cash flow hedges	(321)	(630)	1,789
Changes in unrealized gains and losses on pension	(242)	(84)	(446)
Total income tax (expense)/benefit related to other comprehensive income/(loss)	(12,248)	(12,642)	62,265
Total other comprehensive (loss)/income	36,673	38,036	(177,809)
Total comprehensive income/(loss)	$ 97,676	$ 107,634	$ (85,276)

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Impact of ASC 326 adoption	Common Stock	Additional paid-in	Unearned	Retained (deficit)	Retained (deficit) Impact of ASC 326 adoption	Accumulated other comprehensive	Treasury
Beginning balance, common stock (in shares) at Dec. 31, 2021			48,667,000
Beginning balance at Dec. 31, 2021	$ 1,182,435	$ 0	$ 528	$ 1,423,445	$ (9,056)	$ (139,383)		$ (3,243)	$ (89,856)
Comprehensive income:
Net income	92,533					92,533
Other net comprehensive (loss)	(177,809)							(177,809)
Total comprehensive income/(loss)	$ (85,276)					92,533		(177,809)
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2022-02 [Member]
Cash dividends declared on common shares	$ (24,527)					(24,527)
Treasury stock purchased (in shares)			(4,485,000)
Treasury stock purchased	(124,519)								(124,519)
Forfeited shares (in shares)			(98,000)
Forfeited shares	0			189	2,560				(2,749)
Exercise of stock options (in shares)			12,000
Exercise of stock options	270					(51)			321
Restricted stock grants (in shares)			328,000
Restricted stock grants	0			537	(9,440)				8,903
Stock-based compensation	7,338				7,338
Other, net (in shares)			(63,000)
Other, net	(1,659)			12		0			(1,671)
Ending balance, common stock (in shares) at Dec. 31, 2022			44,361,000
Ending balance at Dec. 31, 2022	954,062	401	$ 528	1,424,183	(8,598)	(71,428)	$ 401	(181,052)	(209,571)
Comprehensive income:
Net income	69,598					69,598
Other net comprehensive (loss)	38,036							38,036
Total comprehensive income/(loss)	107,634					69,598		38,036
Cash dividends declared on common shares	(31,707)					(31,707)
Treasury stock purchased (in shares)			(1,135,000)
Treasury stock purchased	(23,844)								(23,844)
Forfeited shares (in shares)			(103,000)
Forfeited shares	0			(184)	2,657				(2,473)
Restricted stock grants (in shares)			446,000
Restricted stock grants	0			(568)	(11,666)				12,234
Stock-based compensation	7,498				7,498
Other, net (in shares)			(68,000)
Other, net	$ (1,823)			(158)					(1,665)
Ending balance, common stock (in shares) at Dec. 31, 2023	43,500,872		43,501,000
Ending balance at Dec. 31, 2023	$ 1,012,221	$ 0	$ 528	1,423,273	(10,109)	(33,136)		(143,016)	(225,319)
Comprehensive income:
Net income	61,003					61,003
Other net comprehensive (loss)	36,673							36,673
Total comprehensive income/(loss)	97,676					61,003		36,673
Stock Issuance (in shares)			3,448,000
Stock Issuance	100,000		$ 34	9,276					90,690
Cash dividends declared on common shares	(30,940)					(30,940)
Treasury stock purchased (in shares)			(794,000)
Treasury stock purchased	(17,536)								(17,536)
Forfeited shares (in shares)			(130,000)
Forfeited shares	0			(366)	3,313				(2,947)
Exercise of stock options (in shares)			5,000
Exercise of stock options	119					(7)			126
Restricted stock grants (in shares)			500,000
Restricted stock grants	0			(1,645)	(11,628)				13,273
Stock-based compensation	8,318				8,318
Other, net (in shares)			(106,000)
Other, net	$ (2,434)			(6)					(2,428)
Ending balance, common stock (in shares) at Dec. 31, 2024	46,424,016		46,424,000
Ending balance at Dec. 31, 2024	$ 1,167,424		$ 562	$ 1,430,532	$ (10,106)	$ (3,080)		$ (106,343)	$ (144,141)

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Statement of Stockholders' Equity [Abstract]
Cash dividends declared, common stock (in USD per share)	$ 0.72	$ 0.72	$ 0.54

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Cash flows from operating activities:
Net income	$ 61,003	$ 69,598	$ 92,533
Adjustments to reconcile net income to net cash provided by operating activities:
Provision expense for credit losses	23,999	31,999	11,000
Net amortization of securities	(62)	1,451	2,886
Change in unamortized net loan origination costs and premiums	5,542	764	3,312
Premises and equipment depreciation and amortization expense	6,984	8,445	9,576
Stock-based compensation expense	8,318	7,498	7,338
Accretion of purchase accounting entries, net	(1,287)	(716)	(1,637)
Amortization of other intangibles	4,601	4,820	5,134
Income from cash surrender value of bank-owned life insurance policies	(6,152)	(5,392)	(5,540)
Securities losses, net	49,930	24,544	2,031
(Gain) on SBA loan sales	(12,648)	(10,334)	(12,494)
Net change in loans held-for-sale	805	2,074	5,168
Amortization of interest in tax-advantaged projects	(2,508)	8,018	3,508
Gain on sale of business operations and other assets	(16,241)	0	0
Net change in other	2,922	14,387	(12,076)
Net cash provided by operating activities	125,206	157,156	110,739
Cash flows from investing activities:
Net decrease in trading security	905	860	818
Proceeds from sales of equity securities	12,863	0	0
Purchases of securities available for sale	(86,546)	(44,586)	(478,940)
Proceeds from sales of securities available for sale	361,871	267,199	149,994
Proceeds from maturities, calls, and prepayments of securities available for sale	88,192	201,624	548,423
Purchases of securities held to maturity	(600)	(700)	(807)
Proceeds from maturities, calls, and prepayments of securities held to maturity	36,611	39,193	51,961
Net change in loans	(493,724)	(716,591)	(1,546,518)
Net change in New York branch loans held for sale	1,146	0	0
Proceeds from surrender of bank-owned life insurance	2,672	2,002	2,311
Purchase of Federal Home Loan Bank stock	(164,145)	(494,159)	(124,331)
Proceeds from sales of Federal Home Loan Bank stock	167,269	478,689	127,912
Net investment in limited partnership tax credits	(13,717)	(16,172)	(14,537)
Purchase of premises and equipment, net	(4,568)	(1,820)	(1,495)
Proceeds from sales of seasoned loan portfolios	89,233	0	24,323
Cash outflows from sale of business operations and other assets	(314,712)	0	0
Net cash (used) by investing activities	(317,250)	(284,461)	(1,260,886)
Cash flows from financing activities:
Net increase in deposits	160,143	306,115	258,316
Net change in NY branch deposits held for sale	(34,896)	0	0
Proceeds from Federal Home Loan Bank advances and other borrowings	1,208,500	10,450,979	51,275
Repayments of Federal Home Loan Bank advances and other borrowings	(1,277,241)	(10,070,200)	(60,196)
Issuance of common stock	100,000	0	0
Proceeds from issuance of subordinated debt	0	0	98,032
Repayment from calling of subordinated debt	0	0	(75,000)
Purchase of treasury stock	(17,536)	(23,844)	(124,519)
Exercise of stock options	119	0	270
Common and preferred stock cash dividends paid	(30,940)	(31,707)	(24,527)
Settlement of derivative contracts with financial institution counterparties	9,060	13,851	84,044
Net cash provided by financing activities	117,209	645,194	207,695
Net change in cash and cash equivalents	(74,835)	517,889	(942,452)
Cash and cash equivalents at beginning of year	1,203,244	685,355	1,627,807
Cash and cash equivalents at end of year	1,128,409	1,203,244	685,355
Supplemental cash flow information:
Interest paid on deposits	232,314	148,313	32,782
Interest paid on borrowed funds	34,798	46,584	9,043
Income taxes paid, net	(1,425)	12,307	28,439
Other non-cash changes:
Other net comprehensive income/(loss)	36,673	38,036	(177,809)
Held-for-sale loans reclassified to held-for-investment, net	878	0	606
Reclassification of New York branch assets to assets held-for-sale	13,936	0	0
Reclassification of New York branch deposits to liabilities held-for-sale, net	484,530	0	0
Reclassification of New York branch liabilities to liabilities held-for-sale	12,929	0	0
Reclassification of New York branch loans held-for-sale to held-for investment, net	7,183	0	0
Reclassification of liabilities held-for-sale to deposits, net	66,207	0	0
Premises and equipment reclassified to held-for-sale	0	8,714	1,380
Shareholders’ equity	1,167,424	1,012,221	954,062
Premium payable on cash flow hedges	0	0	2,296
Seasoned Loans
Other non-cash changes:
Reclassifications of loans to loans held for sale	91,754	0	3,369
New York Branch Loans
Other non-cash changes:
Reclassifications of loans to loans held for sale	$ 58,455	0	0
Impact of ASC 326 adoption
Other non-cash changes:
Shareholders’ equity		$ 0	$ 401

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Consolidation 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. Reclassification 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. Cash and Cash equivalents Cash and cash equivalents include cash, balances due from banks, and short-term investments, all of which had an original maturity within 90 days. Due to the nature of cash and cash equivalents and the near term maturity, the Company estimated that the carrying amount of such instruments approximated fair value. The nature of the Bank’s business requires that it maintain amounts due from banks which at times, may exceed federally insured limits. The Bank has not experienced any losses on such amounts and all amounts are maintained with well-capitalized institutions. Trading Security The Company accounts for a tax advantaged economic development bond originated in 2008 at fair value, in accordance with Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) 320. The bond has been designated as a trading account security and is recorded at fair value, with changes in unrealized gains and losses recorded through earnings each period as part of non-interest income. Securities Debt securities that management has the intent and ability to hold to maturity are classified as held to maturity and carried at amortized cost. All other debt securities are classified as available for sale and carried at fair value, with unrealized gains and losses reported as a component of other net comprehensive income. Equity securities are carried at fair value, with changes in fair value reported in net income. Management determines the appropriate classification of securities at the time of purchase. Restricted equity securities, such as stock in the Federal Home Loan Bank of Boston (“FHLBB”) are carried at cost. There are no quoted market prices for the Company’s restricted equity securities. The Bank is a member of the FHLBB, which requires that members maintain an investment in FHLBB stock, which may be redeemed based on certain conditions. The Bank reviews for impairment based on the ultimate recoverability of the cost bases in the FHLBB stock. Purchase premiums and discounts are recognized in interest income using the interest method, without anticipating prepayments, except mortgage-backed securities where prepayments are anticipated, over the terms of the securities. Premiums on callable debt securities are amortized to their earliest call date. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. The Company measures expected credit losses on held to maturity debt securities on a collective basis. Accrued interest receivable on held to maturity debt securities is excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts. The Company evaluates available for sale debt securities in an unrealized loss position by first assessing whether it intends to sell or it is more likely than not that it will be required to sell the security before recovery of its amortized cost basis. If either the criteria regarding intent or requirement to sell is met, the security’s amortized cost basis is written down to fair value through income. For available for sale debt securities that do not meet the aforementioned criteria, the Company evaluates whether the decline in fair value has resulted from credit losses or other factors. In making this assessment, the Company considers the extent to which fair value is less than amortized cost, any changes to the rating of security by a rating agency, and adverse conditions specifically related to the security, among other factors. If this assessment indicates that a credit loss exists, the present value of cash flows expected to be collected from the security are compared to the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis, a credit loss exists and an allowance for credit losses is recorded for the credit loss, limited by the amount that the fair value is less than the amortized cost basis. Any impairment that has not been recorded through an allowance for credit losses is recognized in other comprehensive income. Loans Held for Sale Loans originated with the intent to be sold in the secondary market are accounted for under the fair value option. Non-refundable fees and direct loan origination costs related to residential mortgage loans held for sale are recognized in non-interest income or non-interest expense as earned or incurred. Fair value is primarily determined based on quoted prices for similar loans in active markets. Gains and losses on sales of residential mortgage loans (sales proceeds minus carrying value) are recorded in non-interest income. Loans that were previously held for investment that the Company has an active plan to sell are transferred to loans held for sale at the lower of cost or market (fair value). The market price is primarily determined based on quoted prices for similar loans in active markets or agreed upon sales prices. Gains are recorded in non-interest income at sale to the extent that the sale price of the loan exceeds carrying value. Any reduction in the loan’s value, prior to being transferred to loans held for sale, is reflected as a charge-off of the recorded investment in the loan resulting in a new cost basis, with a corresponding reduction in the allowance for credit losses. Further decreases in the fair value of the loan are recognized in non-interest expense. Loans Loans are reported at their amortized cost. Amortized cost is the principal balance outstanding, net of the unamortized balance of any deferred fees or costs and the unamortized balance of any premiums or discounts on loans purchased or acquired through mergers. Interest income is accrued on the unpaid principal balance. Interest income includes net accretion or amortization of deferred fees or costs and of premiums or discounts. Direct loan origination costs, net of any origination fees, in addition to premiums and discounts on loans, are deferred and recognized as an adjustment of the related loan yield using the interest method. Interest on loans, excluding automobile and unsecured consumer loans, is generally not accrued on loans which are ninety days or more past due unless the loan is well-secured and in the process of collection. Past due status is based on contractual terms of the loan. Automobile and unsecured consumer loans generally continue accruing until one hundred and twenty days delinquent, at which time they are charged off. All interest accrued but not collected for loans that are placed on nonaccrual or charged-off is reversed against interest income, except for certain loans designated as well-secured. The interest on nonaccrual loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. Purchase Credit Deteriorated ("PCD") Loans Loans that the Company acquired in acquisitions include some loans that have experienced more than insignificant credit deterioration since origination. PCD loans are recorded at the amount paid. An allowance for credit losses is determined using the same methodology as other loans held for investment. The initial allowance for credit losses determined on a collective basis is allocated to individual loans. The sum of the loan’s purchase price and allowance for credit losses becomes its initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. Subsequent changes to the allowance for credit losses are recorded through provision expense. Allowance for Credit Losses on Loans The allowance for credit losses on loans (“ACLL”) is comprised of the allowance for credit losses on loans. The ACLL is a valuation account that is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the uncollectability of a loan balance is confirmed. Accrued interest receivable is excluded from the estimate of credit losses. 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 estimate of expected credit losses is based on relevant information about current conditions, past events, and reasonable and supportable forward-looking forecasts regarding collectability of the reported amounts. In order to estimate the expected credit losses for loans evaluated on a pooled basis, the Company utilizes a static pool migration methodology which calculates a historical loss rate for each of the identified loan segments. The historical loss rates are then adjusted for current and asset specific characteristics (also referred to as qualitative adjustments) and for expected changes to current conditions over the reasonable and supportable forecast period (also referred to as forecast).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 allowance for unfunded commitments is maintained at a level by the Company to be sufficient to absorb expected lifetime losses related to unfunded credit facilities (including unfunded loan commitments and letters of credit).) The Company’s allowance for credit losses on unfunded commitments is recognized as a liability (other liability on the Consolidated Balance Sheets), with adjustments to the reserve recognized in other noninterest expense in the Consolidated Statements of Income. The ACLL is measured on a collective (pool) basis when similar risk characteristics exist. The Company evaluates its risk characteristics of loans based on regulatory call report code with sub-segmentation based on underlying collateral for certain loan types. 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 this segment 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 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 of 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. Loans that do not share risk characteristics are evaluated on an individual basis and are not also included in the collective evaluation. Estimates of specific allowance may be determined by the present value of anticipated future cash flows or the loan’s observable fair market value, or the fair value of the collateral less costs to sell, if the loan is collateral dependent. However, for collateral dependent loans, the amount of the amortized cost in a loan that exceeds the fair value of the collateral is charged-off against the allowance for credit losses on loans in lieu of an allocation of a specific allowance amount when such an amount has been identified definitively as uncollectible. Bank-Owned Life Insurance Bank-owned life insurance policies are reflected on the Consolidated Balance Sheets at the amount that can be realized under the insurance contract at the balance sheet date which is the cash surrender value. Changes in the net cash surrender value of the policies, as well as insurance proceeds received, are reflected in non-interest income on the Consolidated Statements of Income and are not subject to income taxes. Foreclosed and Repossessed Assets Other real estate owned is comprised of real estate acquired through foreclosure proceedings or acceptance of a deed in lieu of foreclosure. Repossessed collateral is primarily comprised of taxi medallions. Both other real estate owned and repossessed collateral are held for sale and are initially recorded at the fair value less estimated costs to sell at the date of foreclosure or repossession, establishing a new cost basis. The shortfall, if any, of the loan balance over the fair value of the property or collateral (excluding taxi medallions), less cost to sell, at the time of transfer from loans to other real estate owned or repossessed collateral is charged to the allowance for credit losses on loans. Subsequent to transfer, the asset is carried at lower of cost or fair value less cost to sell and periodically evaluated for impairment. The shortfall, if any, of the loan balance over the fair value of the collateral comprised of taxi medallions at the time of transfer from loans to repossessed collateral is charged to non-interest income. Subsequent impairments in the fair value of other real estate owned and repossessed collateral are charged to expense in the period incurred. Net operating income or expense related to other real estate owned and repossessed collateral is included in operating expenses in the accompanying Consolidated Statements of Income. Because of changing market conditions, there are inherent uncertainties in the assumptions with respect to the estimated fair value of other real estate owned and repossessed collateral. Because of these inherent uncertainties, the amount ultimately realized on other real estate owned and repossessed collateral may differ from the amounts reflected in the financial statements. Capitalized Servicing Rights Capitalized servicing rights are included in “other assets” in the Consolidated Balance Sheets. Servicing assets are initially recognized as separate assets at fair value when rights are acquired through purchase or through sale of financial assets with servicing retained. The Company's servicing rights accounted for under the fair value method are carried on the Consolidated Balance Sheets at fair value with changes in fair value recorded in income in the period in which the change occurs. Changes in the fair value of servicing rights are primarily due to changes in valuation assumptions, such as discount rates and prepayment speeds, and the collection and realization of expected cash flows. The Company’s servicing rights accounted for under the amortization method are initially recorded at fair value. Under that method, capitalized servicing rights are charged to expense in proportion to and over the period of estimated net servicing income. Fair value of the servicing rights is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, prepayment speeds and default rates and losses. Impairment is recognized through a valuation allowance for an individual tranche, to the extent that fair value is less than the capitalized amount for the tranches. If the Company later determines that all or a portion of the impairment no longer exists for a particular tranche, a reduction of the allowance may be recorded as an increase to income. Premises and Equipment Land is carried at cost. Buildings, improvements, and equipment are carried at cost less accumulated depreciation and amortization computed on the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized on the straight-line method over the shorter of the lease term, plus optional terms if certain conditions are met, or the estimated useful life of the asset. Other Intangibles Intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset or liability. The fair values of these assets are generally determined based on appraisals and are subsequently amortized on a straight-line basis or an accelerated basis over their estimated lives. Management assesses the recoverability of these intangible assets at least annually or whenever events or changes in circumstances indicate that their carrying value may not be recoverable. If the carrying amount exceeds fair value, an impairment charge is recorded to income. Transfers of Financial Assets Transfers of an entire financial asset, group of entire financial assets, or a participating interest in an entire financial asset are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets. Income Taxes Deferred income taxes are recognized for the tax consequences of temporary differences by applying enacted statutory tax rates applicable for future years to differences between financial statement and tax bases of existing assets and liabilities. The effect of tax rate changes on deferred taxes is recognized in the income tax provision in the period that includes the enactment date. A tax valuation allowance is established, as needed, to reduce net deferred tax assets to the amount expected to be realized. In the event it becomes more likely than not that some or all of the deferred tax asset allowances will not be needed, the valuation allowance will be adjusted. In the ordinary course of business there is inherent uncertainty in quantifying the Company’s income tax positions. Income tax positions and recorded tax benefits are based upon management’s evaluation of the facts, circumstances, and information available at the reporting date. For those tax positions where it is more likely than not that a tax benefit will be sustained, we have determined the amount of the tax benefit to be recognized by estimating the largest amount of tax benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. For those income tax positions where it is more-likely-than-not that a tax benefit will not be sustained, no tax benefit has been recognized in the financial statements. Where applicable, associated interest and penalties have also been recognized. We recognize accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense. Stock-Based Compensation The Company measures and recognizes compensation cost relating to share-based payment transactions based on the grant-date fair value of the equity instruments issued. The fair value of restricted stock is recorded as unearned compensation. The deferred expense is amortized to compensation expense based on one of several permitted attribution methods over the longer of the required service period or performance period. For performance-based restricted stock awards, the Company estimates the degree to which performance conditions will be met to determine the number of shares that will vest and the related compensation expense. Compensation expense is adjusted in the period such estimates change. Income tax benefits and/or tax deficiencies related to stock compensation determined as the difference between compensation cost recognized for financial reporting purposes and the deduction for tax, are recognized in the income statement as income tax expense or benefit in the period in which they occur. Wealth Management Wealth management assets held in a fiduciary or agent capacity are not included in the accompanying Consolidated Balance Sheets because they are not assets of the Company. Wealth management fees is primarily comprised of fees earned from consultative investment management, trust administration, tax return preparation, and financial planning. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based on the daily accrual of the market value of the investment accounts and the applicable fee rate. Derivative Instruments and Hedging Activities The Company enters into interest rate swap agreements as part of the Company’s interest rate risk management strategy for certain assets and liabilities and not for speculative purposes. Based on the Company’s intended use for the interest rate swap at inception, the Company designates the derivative as either an economic hedge of an asset or liability or a hedging instrument subject to the hedge accounting provisions of ASC 815, “Derivatives and Hedging.” Interest rate swaps designated as economic hedges are recorded at fair value within other assets or liabilities. Changes in the fair value of these derivatives are recorded directly through earnings. For interest rate swaps that management intends to apply the hedge accounting provisions of ASC 815, the Company formally documents at inception all relationships between hedging instruments and hedged items, as well as its risk management objectives and strategies for undertaking the various hedges. Additionally, the Company uses dollar offset or regression analysis at the hedge’s inception and for each reporting period thereafter, to assess whether the derivative used in its hedging transaction is expected to be and has been highly effective in offsetting changes in the fair value or cash flows of the hedged item. The Company discontinues hedge accounting when it is determined that a derivative is not expected to be or has ceased to be highly effective as a hedge, and then reflects changes in fair value of the derivative in earnings after termination of the hedge relationship. The Company enters into commitments to lend with borrowers, and forward commitments to sell loans or to-be-announced mortgage-backed bonds to investors to hedge against the inherent interest rate and pricing risk associated with selling loans. The commitments to lend generally terminate once the loan is funded, the lock period expires or the borrower decides not to contract for the loan. The forward commitments generally terminate once the loan is sold, the commitment period expires or the borrower decides not to contract for the loan. These commitments are considered derivatives which are accounted for by recognizing their estimated fair value on the Consolidated Balance Sheets as either a freestanding asset or liability. See Note 14 - Derivative Instruments and Hedging Activities to the financial statements for more information on commitments to lend and forward commitments. Off-Balance Sheet Financial Instruments In the ordinary course of business, the Company enters into off-balance sheet financial instruments, consisting primarily of credit related financial instruments. These financial instruments are recorded in the financial statements when they are funded or related fees are incurred or received. Fair Value Hierarchy The Company groups assets and liabilities that are measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. Level 1 - Valuation is based on quoted prices in active markets for identical assets or liabilities. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities. Level 2 - Valuation is based on observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 - Valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using unobservable techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. Employee Benefits The Company maintains an employer sponsored 401(k) plan to which participants may make contributions in the form of salary deferrals and the Company provides matching contributions in accordance with the terms of the plan. Contributions due under the terms of the defined contribution plans are accrued as earned by employees. Due to the Rome Bancorp acquisition in 2011, the Company inherited a noncontributory, qualified, defined benefit pension plan for certain employees who met age and service requirements; as well as other post-retirement benefits, principally health care and group life insurance. The Rome pension plan and postretirement benefits that were acquired in connection with the whole-bank acquisition were frozen prior to the close of the transaction. The pension benefit in the form of a life annuity is based on the employee’s combined years of service, age, and compensation. The Company also has a long-term care post-retirement benefit plan for certain executives where upon disability, associated benefits are funded by insurance policies or paid directly by the Company. In order to measure the expense associated with the Plans, various assumptions are made including the discount rate, expected return on plan assets, anticipated mortality rates, and expected future healthcare costs. The assumptions are based on historical experience as well as current facts and circumstances. The Company uses a December 31 measurement date for its plans. As of the measurement date, plan assets are determined based on fair value, generally representing observable market prices. The projected benefit obligation is primarily determined based on the present value of projected benefit distributions at an assumed discount rate. Net periodic pension benefit costs include interest costs based on an assumed discount rate, the expected return on plan assets based on actuarially derived market-related values, and the amortization of net actuarial losses. Net periodic postretirement benefit costs include service costs, interest costs based on an assumed discount rate, and the amortization of prior service credits and net actuarial gains. Differences between expected and actual results in each year are included in the net actuarial gain or loss amount, which is recognized in other comprehensive income. The net actuarial gain or loss in excess of a 10% corridor is amortized in net periodic benefit cost over the average remaining service period of active participants in the Plans. The prior service credit is amortized over the average remaining service period to full eligibility for participating employees expected to receive benefits. The Company recognizes in its consolidated balance sheets an asset for a plan’s overfunded status or a liability for a plan’s underfunded status. The Company also measures the Plans’ assets and obligations that determine its funded status as of the end of the fiscal year and recognizes those changes in other comprehensive income/(loss), net of tax. Due to the SI Financial acquisition in 2019, the Company inherited a tax-qualified defined benefit pension plan. The plan was frozen effective September 6, 2013. The plan is a single plan under the Internal Revenue Code and, as a result, all of the assets stand behind all of liabilities. Accordingly, contributions made by a participating employer may be used to provide benefits to participants of other participating employers. Operating Segments The Company's reportable segment is determined by the Chief Executive Officer, who is designated the chief operating decision maker ("CODM"), based upon information provided about the Company's products and services offered, primarily banking operations. Consolidated net income of the company is the primary performance metric utilized by the CODM. The segment is also distinguished by the level of information provided to the CODM, who uses such information to review performance of various components of the business, which are then aggregated if operating performance, products/services, and customers are similar. The CODM will evaluate the financial performance of the Company's business components such as by evaluating revenue streams, significant expenses, and budget to actual results in assessing the Company's segment and in the determination of allocating resources. The CODM uses revenue streams to evaluate product pricing and significant expenses to assess performance and evaluate return on assets. The CODM uses consolidated net income to benchmark the Company against its co

CASH AND CASH EQUIVALENTS

CASH AND CASH EQUIVALENTS	12 Months Ended
	Dec. 31, 2024
Cash and Cash Equivalents [Abstract]
CASH AND CASH EQUIVALENTS	CASH AND CASH EQUIVALENTS

TRADING SECURITY

TRADING SECURITY	12 Months Ended
	Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]
TRADING SECURITY	TRADING SECURITY The Company holds a tax advantaged economic development bond that is being accounted for at fair value. The security had an amortized cost of $5.3 million and $6.2 million and a fair value of $5.3 million and $6.1 million at year-end 2024 and 2023, respectively. Unrealized gains/(losses) recorded through income on this security totaled $21 thousand, $294 thousand, and ($830) thousand for 2024, 2023, and 2022, respectively. As discussed further in Note 14 - Derivative Instruments and Hedging Activities, the Company has 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 are no other debt securities in the trading portfolio at year-end 2024 and 2023.

SECURITIES

SECURITIES	12 Months Ended
	Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]
SECURITIES	SECURITIES The following is a summary of securities available for sale (“AFS”) , held to maturity (“HTM”), and equity securities: (In thousands) Amortized Gross Gross Fair Value Allowance December 31, 2024 Securities available for sale Debt securities: U.S Treasuries $ 6,986 $ 3 $ — $ 6,989 $ — Municipal bonds and obligations 63,952 10 (3,098) 60,864 — Agency collateralized mortgage obligations 328,569 146 (64,153) 264,562 — Agency mortgage-backed securities 273,969 4 (53,733) 220,240 — Agency commercial mortgage-backed securities 85,686 — (18,975) 66,711 — Corporate bonds 38,689 30 (2,362) 36,357 — Total securities available for sale 797,851 193 (142,321) 655,723 — Securities held to maturity Municipal bonds and obligations 235,883 129 (22,619) 213,393 44 Agency collateralized mortgage obligations 101,163 — (17,884) 83,279 — Agency mortgage-backed securities 43,644 — (8,707) 34,937 — Agency commercial mortgage-backed securities 125,547 — (25,153) 100,394 — Tax advantaged economic development bonds 1,144 — (42) 1,102 20 Other bonds and obligations 277 — — 277 — Total securities held to maturity 507,658 129 (74,405) 433,382 64 Equity securities 655 67 (67) 655 — Total $ 1,306,164 $ 389 $ (216,793) $ 1,089,760 $ 64 December 31, 2023 Securities available for sale Debt securities: U.S Treasuries $ 7,980 $ 1 $ — $ 7,981 $ — Municipal bonds and obligations 64,788 494 (1,429) 63,853 — Agency collateralized mortgage obligations 426,986 — (79,112) 347,874 — Agency mortgage-backed securities 492,633 2 (75,155) 417,480 — Agency commercial mortgage-backed securities 174,879 — (29,553) 145,326 — Corporate bonds 43,291 34 (4,210) 39,115 — Other bonds and obligations 655 67 (66) 656 — Total securities available for sale 1,211,212 598 (189,525) 1,022,285 — Securities held to maturity Municipal bonds and obligations 251,046 698 (16,987) 234,757 48 Agency collateralized mortgage-backed securities 112,929 — (18,360) 94,569 — Agency mortgage-backed securities 47,379 — (8,052) 39,327 — Agency commercial mortgage-backed securities 130,169 — (24,368) 105,801 — Tax advantaged economic development bonds 1,540 6 (60) 1,486 20 Other bonds and obligations 288 — — 288 — Total securities held to maturity 543,351 704 (67,827) 476,228 68 Equity securities 15,035 — (2,006) 13,029 — Total $ 1,769,598 $ 1,302 $ (259,358) $ 1,511,542 $ 68 ` At year-end 2024 and 2023, accumulated net unrealized (losses) on AFS securities included in accumulated other comprehensive income/(loss) were losses of $142.1 million and $188.9 million, respectively. The year-end 2024 and 2023 related income tax benefit of $37.7 million and $49.4 million, respectively, was also included in accumulated other comprehensive (loss). The following table summarizes the activity in the allowance for credit losses for debt securities held to maturity by security type for the years ended December 31, 2024, 2023 and 2022: (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2023 $ 48 $ 20 $ 68 Provision (benefit) for credit losses (4) — (4) Balance at December 31, 2024 $ 44 $ 20 $ 64 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2022 $ 66 $ 25 $ 91 Provision (benefit) for credit losses (18) (5) (23) Balance at December 31, 2023 $ 48 $ 20 $ 68 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2021 $ 70 $ 35 $ 105 Provision expense/(benefit) for credit losses (4) (10) (14) Balance at December 31, 2022 $ 66 $ 25 $ 91 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 December 31, 2024, none of the Company's investment securities were delinquent or in nonaccrual status. The amortized cost and estimated fair value of AFS and HTM securities, segregated by contractual maturity at year-end 2024 are presented below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Mortgage-backed securities and collateralized mortgage obligations are shown in total, as their maturities are highly variable. Available for sale Held to maturity (In thousands) Amortized Fair Amortized Fair Within 1 year $ 7,640 $ 7,640 $ 346 $ 346 Over 1 year to 5 years 21,117 20,782 2,980 2,930 Over 5 years to 10 years 47,244 44,631 54,191 53,032 Over 10 years 33,626 31,157 179,787 158,464 Total bonds and obligations 109,627 104,210 237,304 214,772 Mortgage-backed securities 688,224 551,513 270,354 218,610 Total $ 797,851 $ 655,723 $ 507,658 $ 433,382 At year-end 2024 and 2023, the Company had pledged securities as collateral for certain municipal deposits and for interest rate swaps with certain counterparties. The total amortized cost and fair values of these pledged securities follows. Additionally, there is a blanket lien on certain securities to collateralize borrowings from the FHLBB and Federal Reserve Bank of Boston, as discussed further in Note 10 - Borrowed Funds. 2024 2023 (In thousands) Amortized Fair Amortized Fair Securities pledged to swap counterparties $ 9,574 $ 9,078 $ 9,780 $ 9,633 Securities pledged for municipal deposits 286,183 218,665 289,740 250,979 Total $ 295,757 $ 227,743 $ 299,520 $ 260,612 Proceeds from the sale of AFS securities totaled $362 million, $267 million, and $150 million in 2024, 2023, and 2022, respectively. The (loss)/gain for the sale of AFS securities were reclassified out of accumulated other comprehensive (loss) and into earnings. The components of net recognized gains and losses on the sale of AFS securities and the fair value change of equities are as follows: (In thousands) 2024 2023 2022 Gross recognized gains $ 21,488 $ 1,199 $ 72 Gross recognized losses (71,566) (26,083) (2,009) Net recognized (losses) $ (50,078) $ (24,884) $ (1,937) Debt securities 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 (In thousands) Gross Fair Gross Fair Gross Fair December 31, 2024 Securities available for sale Debt securities: Municipal bonds and obligations $ 773 $ 30,299 $ 2,325 $ 25,916 $ 3,098 $ 56,215 Agency collateralized mortgage obligations 403 45,954 63,750 200,038 64,153 245,992 Agency mortgage-backed securities 113 3,706 53,620 215,822 53,733 219,528 Agency commercial mortgage-back securities — — 18,975 66,711 18,975 66,711 Corporate bonds — — 2,362 32,538 2,362 32,538 Total securities available for sale $ 1,289 $ 79,959 $ 141,032 $ 541,025 $ 142,321 $ 620,984 Securities held to maturity Municipal bonds and obligations 1,614 73,453 21,005 111,228 22,619 184,681 Agency collateralized mortgage obligations — — 17,884 83,279 17,884 83,279 Agency mortgage-backed securities — — 8,707 34,937 8,707 34,937 Agency commercial mortgage-back securities — — 25,153 100,394 25,153 100,394 Tax advantaged economic development bonds — — 42 1,102 42 1,102 Total securities held to maturity 1,614 73,453 72,791 330,940 74,405 404,393 Total $ 2,903 $ 153,412 $ 213,823 $ 871,965 $ 216,726 $ 1,025,377 December 31, 2023 Securities available for sale Debt securities: Municipal bonds and obligations $ 76 $ 9,326 $ 1,353 $ 22,739 $ 1,429 $ 32,065 Agency collateralized mortgage obligations — — 79,112 347,874 79,112 347,874 Agency mortgage-backed securities 1 22 75,154 417,151 75,155 417,173 Agency commercial mortgage-backed securities — — 29,553 145,326 29,553 145,326 Corporate bonds 457 6,543 3,753 31,690 4,210 38,233 Other bonds and obligations — — 66 295 66 295 Total securities available for sale $ 534 $ 15,891 $ 188,991 $ 965,075 $ 189,525 $ 980,966 Securities held to maturity Municipal bonds and obligations 229 28,895 16,758 92,063 16,987 120,958 Agency collateralized mortgage obligations 1 21 18,359 94,548 18,360 94,569 Agency mortgage-backed securities — — 8,052 39,327 8,052 39,327 Agency commercial mortgage-back securities — — 24,368 105,801 24,368 105,801 Tax advantaged economic development bonds — — 60 922 60 922 Total securities held to maturity 230 28,916 67,597 332,661 67,827 361,577 Total $ 764 $ 44,807 $ 256,588 $ 1,297,736 $ 257,352 $ 1,342,543 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 December 31, 2024, 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. 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 did not maintain other-than-temporary impairment ("OTTI") at year-end 2024: AFS municipal bonds and obligations At year-end 2024, 77 out of 91 securities in the Company’s portfolio of AFS municipal bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 5.2% 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 2024. All securities are performing. AFS collateralized mortgage obligations At year-end 2024, 41 out of 43 securities in the Company’s portfolio of AFS collateralized mortgage obligations were in unrealized loss positions. Aggregate unrealized losses represented 20.7% 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 residential mortgage obligations. The securities are investment grade rated and there were no material underlying credit downgrades during 2024. All securities are performing. AFS commercial and residential mortgage-backed securities At year-end 2024, 28 out of 28 securities in the Company’s portfolio of AFS mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 20.3% of the amortized cost of securities in unrealized loss positions. The FNMA, FHLMC, and GNMA guarantee the contractual cash flows of the Company’s mortgage-backed securities. The securities are investment grade rated and there were no material underlying credit downgrades during 2024. All securities are performing. AFS corporate bonds At year-end 2024, 12 out of 14 securities in the Company’s portfolio of AFS corporate bonds were in unrealized loss positions. The aggregate unrealized loss represents 6.8% of the amortized cost of bonds in unrealized loss positions. The Company reviews the financial strength 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 year-end 2024, 137 out of 159 securities in the Company’s portfolio of HTM municipal bonds and obligations were in unrealized loss positions. Aggregate unrealized losses represented 10.9% 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 2024. All securities are performing. HTM collateralized mortgage obligations At year-end 2024, 12 out of 12 securities in the Company’s portfolio of HTM collateralized mortgage obligations were in an unrealized loss position. Aggregate unrealized losses represented 17.7% of the amortized cost of the security in an unrealized loss position. 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 2024. All securities are performing. HTM commercial and residential mortgage-backed securities At year-end 2024, 17 out of 17 securities in the Company’s portfolio of HTM mortgage-backed securities were in unrealized loss positions. Aggregate unrealized losses represented 20.0% 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 2024. All securities are performing. HTM tax-advantaged economic development bonds At year-end 2024, 2 out of 2 securities in the Company’s portfolio of tax-advantaged economic development bonds were in unrealized loss positions. Aggregate unrealized losses represented 3.7% of the amortized cost of securities in unrealized loss position. The Company believes that more likely than not all the principal outstanding will be collected. All securities are performing.

LOANS AND RELATED ALLOWANCE FOR

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES	12 Months Ended
	Dec. 31, 2024
Credit Loss [Abstract]
LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES	LOANS AND RELATED 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) December 31, 2024 December 31, 2023 Construction $ 726,344 $ 640,371 Commercial multifamily 636,805 599,145 Commercial real estate owner occupied 695,330 628,646 Commercial real estate non-owner occupied 2,769,447 2,606,409 Commercial and industrial 1,439,175 1,359,249 Residential real estate 2,771,769 2,760,312 Home equity 230,365 224,223 Consumer other 115,759 221,331 Total loans $ 9,384,994 $ 9,039,686 Allowance for credit losses 114,700 105,357 Net loans $ 9,270,294 $ 8,934,329 As of December 31, 2024 and 2023, outstanding loans originated under the Small Business Administration ("SBA") Paycheck Protection Program ("PPP") totaled $1.4 million and $3.0 million, respectively. These loans are 100% guaranteed by the SBA and the full principal amount of the loan may qualify for forgiveness. These loans are included in commercial and industrial. In 2024, the Company purchased loans aggregating $76 million and sold loans aggregating $178 million. In 2023, the Company purchased loans aggregating $649 million and sold loans aggregating $255 million. In 2022, the Company purchased loans aggregating $718 million and sold loans aggregating $366 million. Net gains on sales of loans were $12.6 million, $10.3 million, and $12.5 million for the years 2024, 2023, and 2022, respectively. Most of the Company’s lending activity occurs within its primary markets in Massachusetts, Southern Vermont, and Northeastern New York. Most of the loan portfolio is secured by real estate, including residential mortgages, commercial mortgages, and home equity loans. Year-end loans to operators of non-residential buildings totaled $2.3 billion, or 24.6%, and $2.2 billion, or 24.0% of total loans in 2024 and 2023, respectively. There were no other concentrations of loans related to any single industry in excess of 10% of total loans at year-end 2024 or 2023. As of December 31, 2024 and December 31, 2023, the Company had no foreclosed residential real estate property. Additionally, residential mortgage loans collateralized by real estate property that are in the process of foreclosure as of December 31, 2024 and December 31, 2023 totaled $1.1 million and $3.8 million, respectively, including sold loans serviced by the Company. At year-end 2024 and 2023, the Company had pledged loans totaling $1.6 billion and $1.3 billion, respectively, to the Federal Reserve Bank of Boston as collateral for certain borrowing arrangements. Also, residential first mortgage loans are subject to a blanket lien for FHLBB advances. See Note 10 - Borrowed Funds. At year-end 2024 and 2023, the Company’s commitments outstanding to related parties totaled $2.2 million and $1.5 million, respectively, and the loans outstanding against these commitments totaled $1.6 million and $0.8 million, respectively. Related parties include directors and executive officers of the Company and its subsidiaries, as well as their respective affiliates in which they have a controlling interest and immediate family members. For the years 2024 and 2023, all related party loans were performing. 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 on Loans The Allowance for Credit Losses for Loans (“ACLL”) is comprised of the allowance for credit 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 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 Sheets. The Company’s activity in the allowance for credit losses on loans for the years ended December 31, 2024, December 31, 2023 and December 31, 2022 was as follows: (In thousands) Balance at Beginning of Period Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Year ended December 31, 2024 Construction $ 2,885 $ — $ — $ 1,578 $ 4,463 Commercial multifamily 2,475 (1,164) — 2,773 4,084 Commercial real estate owner occupied 9,443 (403) 231 2,032 11,303 Commercial real estate non-owner occupied 38,221 (36) 249 86 38,520 Commercial and industrial 18,602 (7,820) 1,984 12,783 25,549 Residential real estate 19,622 (76) 1,425 1,508 22,479 Home equity 2,015 — 250 127 2,392 Consumer other 12,094 (11,026) 1,726 3,116 5,910 Total allowance for credit losses $ 105,357 $ (20,525) $ 5,865 $ 24,003 $ 114,700 (In thousands) Balance at Beginning of Period Adoption of Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Year ended December 31, 2023 Construction $ 1,227 $ — $ (1) $ — $ 1,659 $ 2,885 Commercial multifamily 1,810 — — 6 659 2,475 Commercial real estate owner occupied 10,739 24 (489) 1,139 (1,970) 9,443 Commercial real estate non-owner occupied 30,724 — (65) 204 7,358 38,221 Commercial and industrial 18,743 (23) (17,872) 2,659 15,095 18,602 Residential real estate 18,666 2 (313) 610 657 19,622 Home equity 2,173 — (88) 519 (589) 2,015 Consumer other 12,188 (404) (10,429) 1,586 9,153 12,094 Total allowance for credit losses $ 96,270 $ (401) $ (29,257) $ 6,723 $ 32,022 $ 105,357 (In thousands) Balance at Beginning of Period Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Year ended December 31, 2022 Construction $ 3,206 $ — $ — $ (1,979) $ 1,227 Commercial multifamily 6,120 (94) 112 (4,328) 1,810 Commercial real estate owner occupied 12,752 (687) 702 (2,028) 10,739 Commercial real estate non-owner occupied 32,106 (5,894) 1,549 2,963 30,724 Commercial and industrial 22,584 (18,447) 3,050 11,556 18,743 Residential real estate 22,406 (555) 1,019 (4,204) 18,666 Home equity 4,006 (166) 283 (1,950) 2,173 Consumer other 2,914 (2,215) 505 10,984 12,188 Total allowance for credit losses $ 106,094 $ (28,058) $ 7,220 $ 11,014 $ 96,270 The Company’s allowance for credit losses on unfunded commitments is recognized as a liability (other liability on the Consolidated Balance Sheets), with adjustments to the reserve recognized in other noninterest expense in the Consolidated Statements of Income. The Company’s activity in the allowance for credit losses on unfunded commitments for the years ended December 31, 2024, December 31, 2023, and December 31, 2022 was as follows: (In thousands) Total Balance at December 31, 2023 $ 9,256 Expense for credit losses 565 Balance at December 31, 2024 $ 9,821 (In thousands) Total Balance at December 31, 2022 $ 8,588 Expense for credit losses 668 Balance at December 31, 2023 $ 9,256 (In thousands) Total Balance at December 31, 2021 $ 7,043 Release of expense for credit losses 1,545 Balance at December 31, 2022 $ 8,588 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 annually, 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 nonaccrual status. The following table presents the Company’s loans by risk category: Term Loans Amortized Cost Basis by Origination Year (In thousands) 2024 2023 2022 2021 2020 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of December 31, 2024 Construction Current period gross write-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Risk rating Pass $ 40,549 $ 138,925 $ 436,850 $ 74,718 $ — $ 1,336 $ — $ 692,378 Special Mention — — 15,374 — — — — — 15,374 Substandard — — — 18,592 — — — — 18,592 Total $ 40,549 $ 138,925 $ 452,224 $ 93,310 $ — $ 1,336 $ — $ — $ 726,344 Commercial multifamily: Current period gross write-offs $ — $ — $ — $ — $ — $ 1,164 $ — $ — $ 1,164 Risk rating Pass $ 85,160 $ 17,598 $ 203,001 $ 52,235 $ 38,211 $ 233,145 $ 428 $ — $ 629,778 Special Mention — — — — — 421 — — 421 Substandard — — — — 2,477 4,129 — — 6,606 Total $ 85,160 $ 17,598 $ 203,001 $ 52,235 $ 40,688 $ 237,695 $ 428 $ — $ 636,805 Commercial real estate owner occupied: Current period gross write-offs $ — $ — $ 45 $ 232 $ — $ 126 $ — $ — $ 403 Risk rating Pass $ 122,082 $ 83,269 $ 112,718 $ 94,937 $ 67,652 $ 177,684 $ 2,947 $ — $ 661,289 Special Mention 1,852 9,637 1,839 7,215 221 5,207 — — 25,971 Substandard — — 411 595 37 7,027 — — 8,070 Total $ 123,934 $ 92,906 $ 114,968 $ 102,747 $ 67,910 $ 189,918 $ 2,947 $ — $ 695,330 Commercial real estate non-owner occupied: Current period gross write-offs $ — $ — $ — $ — $ — $ 36 $ — $ — $ 36 Risk rating Pass $ 246,619 $ 426,882 $ 591,563 $ 413,459 $ 142,739 $ 874,454 $ 5,961 $ 1,500 $ 2,703,177 Special Mention — — — 1,038 223 40,763 — — 42,024 Substandard — — 368 2,782 — 18,840 2,256 — 24,246 Total $ 246,619 $ 426,882 $ 591,931 $ 417,279 $ 142,962 $ 934,057 $ 8,217 $ 1,500 $ 2,769,447 Commercial and industrial: Current period gross write-offs $ 324 $ 868 $ 1,564 $ 940 $ 816 $ 1,745 $ 1,563 $ — $ 7,820 Risk rating Pass $ 205,831 $ 91,152 $ 126,327 $ 93,441 $ 18,613 $ 112,620 $ 689,036 $ 11,478 $ 1,348,498 Special Mention 164 1,122 22,091 1,305 1,705 2,957 16,723 100 46,167 Substandard — 2,422 1,740 10,825 929 12,075 16,314 205 44,510 Total $ 205,995 $ 94,696 $ 150,158 $ 105,571 $ 21,247 $ 127,652 $ 722,073 $ 11,783 $ 1,439,175 Term Loans Amortized Cost Basis by Origination Year (In thousands) 2024 2023 2022 2021 2020 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Residential real estate Current period gross write-offs $ — $ — $ — $ — $ — $ 76 $ — $ — $ 76 Risk rating Pass $ 291,826 $ 531,873 $ 908,916 $ 247,551 $ 77,706 $ 703,572 $ 136 $ — $ 2,761,580 Special Mention — — 649 468 — 1,501 — — 2,618 Substandard — — 124 188 374 6,885 — — 7,571 Total $ 291,826 $ 531,873 $ 909,689 $ 248,207 $ 78,080 $ 711,958 $ 136 $ — $ 2,771,769 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 December 31, 2023 Construction Current period gross write-offs $ — $ — $ — $ — $ — $ 1 $ — $ — $ 1 Risk rating Pass $ 104,507 $ 346,419 $ 138,802 $ 29,176 $ 2,545 $ 1,098 $ — $ — $ 622,547 Special Mention — — 512 — — — — — 512 Substandard — — 17,312 — — — — — 17,312 Total $ 104,507 $ 346,419 $ 156,626 $ 29,176 $ 2,545 $ 1,098 $ — $ — $ 640,371 Commercial multifamily: Current period gross write-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Risk rating Pass $ 16,020 $ 216,477 $ 56,817 $ 26,566 $ 94,733 $ 179,923 $ 377 $ — $ 590,913 Special Mention — — — — — — — — — Substandard — — 242 2,554 — 5,436 — — 8,232 Total $ 16,020 $ 216,477 $ 57,059 $ 29,120 $ 94,733 $ 185,359 $ 377 $ — $ 599,145 Commercial real estate owner occupied: Current period gross write-offs $ — $ — $ — $ 380 $ — $ 109 $ — $ — $ 489 Risk rating Pass $ 97,271 $ 120,327 $ 122,151 $ 37,914 $ 70,393 $ 165,224 $ 2,653 $ — $ 615,933 Special Mention — — 424 222 — 788 — — 1,434 Substandard — — 81 47 4,703 6,448 — — 11,279 Total $ 97,271 $ 120,327 $ 122,656 $ 38,183 $ 75,096 $ 172,460 $ 2,653 $ — $ 628,646 Commercial real estate non-owner occupied: Current period gross write-offs $ — $ — $ — $ — $ — $ 65 $ — $ — $ 65 Risk rating Pass $ 404,687 $ 591,897 $ 385,247 $ 135,134 $ 277,870 $ 736,566 $ 4,553 $ — $ 2,535,954 Special Mention — — — 229 19,465 726 — — 20,420 Substandard — — — 6,814 13,483 29,738 — — 50,035 Total $ 404,687 $ 591,897 $ 385,247 $ 142,177 $ 310,818 $ 767,030 $ 4,553 $ — $ 2,606,409 Commercial and industrial: Current period gross write-offs $ — $ 1,154 $ 863 $ 2,763 $ 1,496 $ 9,283 $ 2,313 $ — $ 17,872 Risk rating Pass $ 142,946 $ 203,126 $ 118,191 $ 69,722 $ 39,437 $ 112,770 $ 554,153 $ — $ 1,240,345 Special Mention 526 23,149 3,735 1,621 610 1,353 35,244 — 66,238 Substandard 432 761 11,702 1,135 3,785 12,538 22,313 — 52,666 Total $ 143,904 $ 227,036 $ 133,628 $ 72,478 $ 43,832 $ 126,661 $ 611,710 $ — $ 1,359,249 Residential real estate Current period gross write-offs $ — $ 50 $ — $ 50 $ 174 $ 39 $ — $ — $ 313 Risk rating Pass $ 599,124 $ 973,031 $ 266,055 $ 88,302 $ 66,837 $ 755,372 $ 81 $ — $ 2,748,802 Special Mention — — — — 140 664 — — 804 Substandard — 129 1,176 379 574 8,448 — — 10,706 Total $ 599,124 $ 973,160 $ 267,231 $ 88,681 $ 67,551 $ 764,484 $ 81 $ — $ 2,760,312 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) 2024 2023 2022 2021 2020 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of December 31, 2024 Home equity: Current period gross write-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Payment performance Performing $ — $ — $ — $ — $ 423 $ 2,529 $ 226,822 $ — $ 229,774 Nonperforming — — — — — — 591 — 591 Total $ — $ — $ — $ — $ 423 $ 2,529 $ 227,413 $ — $ 230,365 Consumer other: Current period gross write-offs $ — $ 214 $ 9,723 $ 760 $ 2 $ 113 $ 214 $ — $ 11,026 Payment performance Performing $ 30,524 $ 33,849 $ 23,397 $ 10,072 $ 3,718 $ 3,825 $ 10,066 $ — $ 115,451 Nonperforming — 1 43 121 — 107 36 — 308 Total $ 30,524 $ 33,850 $ 23,440 $ 10,193 $ 3,718 $ 3,932 $ 10,102 $ — $ 115,759 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 December 31, 2023 Home equity: Current period gross write-offs $ — $ — $ — $ 70 $ — $ — $ 18 $ — $ 88 Payment performance Performing $ — $ — $ — $ 439 $ — $ 2,614 $ 220,209 $ — $ 223,262 Nonperforming — — — — — — 961 — 961 Total $ — $ — $ — $ 439 $ — $ 2,614 $ 221,170 $ — $ 224,223 Consumer other: Current period gross write-offs $ 109 $ 8,843 $ 1,149 $ 11 $ 78 $ 239 $ — $ — $ 10,429 Payment performance Performing $ 49,588 $ 108,284 $ 19,679 $ 5,843 $ 7,054 $ 19,587 $ 10,614 $ — $ 220,649 Nonperforming 77 104 47 26 110 284 34 — 682 Total $ 49,665 $ 108,388 $ 19,726 $ 5,869 $ 7,164 $ 19,871 $ 10,648 $ — $ 221,331 The following table summarizes information about total loans rated Special Mention or lower at December 31, 2024 and December 31, 2023. The table below includes consumer loans that are Special Mention and Substandard accruing that are classified as performing based on payment activity. (In thousands) December 31, 2024 December 31, 2023 Nonaccrual $ 24,447 $ 21,407 Substandard Accruing 88,009 131,689 Total Classified 112,456 153,096 Special Mention 133,408 91,502 Total Criticized $ 245,864 $ 244,598 The following is a summary of loans by past due status at December 31, 2024 and December 31, 2023: (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, 2024 Construction $ — $ — $ 594 $ 594 $ 725,750 $ 726,344 Commercial multifamily 421 — 4,129 4,550 632,255 636,805 Commercial real estate owner occupied 484 456 2,330 3,270 692,060 695,330 Commercial real estate non-owner occupied 295 — 3,532 3,827 2,765,620 2,769,447 Commercial and industrial 2,613 1,116 9,823 13,552 1,425,623 1,439,175 Residential real estate 8,571 1,969 7,570 18,110 2,753,659 2,771,769 Home equity 629 519 1,491 2,639 227,726 230,365 Consumer other 884 327 1,395 2,606 113,153 115,759 Total $ 13,897 $ 4,387 $ 30,864 $ 49,148 $ 9,335,846 $ 9,384,994 (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, 2023 Construction $ — $ — $ — $ — $ 640,371 $ 640,371 Commercial multifamily 5,436 187 — 5,623 593,522 599,145 Commercial real estate owner occupied 581 286 804 1,671 626,975 628,646 Commercial real estate non-owner occupied 139 251 3,798 4,188 2,602,221 2,606,409 Commercial and industrial 2,749 689 8,769 12,207 1,347,042 1,359,249 Residential real estate 5,669 943 10,687 17,299 2,743,013 2,760,312 Home equity 707 498 1,281 2,486 221,737 224,223 Consumer other 2,363 1,642 1,606 5,611 215,720 221,331 Total $ 17,644 $ 4,496 $ 26,945 $ 49,085 $ 8,990,601 $ 9,039,686 The following is a summary of loans on nonaccrual status and loans past due 90 days or more and still accruing as of December 31, 2024 and December 31, 2023: December 31, 2024 (In thousands) Nonaccrual Amortized Cost Nonaccrual With No Related Allowance Past Due 90 Days or Greater and Accruing Interest Income Recognized on Nonaccrual Construction $ 594 $ 594 $ — $ — Commercial multifamily 4,129 4,129 — — Commercial real estate owner occupied 2,330 2,330 — — Commercial real estate non-owner occupied 3,532 3,532 — — Commercial and industrial 8,964 8,614 859 — Residential real estate 3,999 3,999 3,571 — Home equity 591 591 900 — Consumer other 308 308 1,087 — Total $ 24,447 $ 24,097 $ 6,417 $ — The commercial and industrial loans nonaccrual amortized cost as of December 31, 2024 included medallion loans with a fair value of $0.3 million and a contractual balance of $6.5 million. December 31, 2023 (In thousands) Nonaccrual Amortized Cost Nonaccrual With No Related Allowance Past Due 90 Days or Greater and Accruing Interest Income Recognized on Nonaccrual Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied 605 285 199 — Commercial real estate non-owner occupied 3,798 45 — — Commercial and industrial 8,665 5,586 104 — Residential real estate 6,696 2,796 3,991 — Home equity 961 122 320 — Consumer other 682 — 924 — Total $ 21,407 $ 8,834 $ 5,538 $ — The commercial and industrial loans nonaccrual amortized cost as of December 31, 2023 included medallion loans with a fair value of $0.4 million and a contractual balance of $8.8 million. A financial asset is considered collateral-dependent when the debtor is experiencing financial difficulty and repayment is expected to be provided substantially through the sale or operation of the collateral. Expected credit losses for collateral-dependent loans are based on the fair value of the collateral at the reporting date, adjusted for selling costs as appropriate. Significant quarter over quarter changes are reflective of changes in nonaccrual status and not necessarily associated with credit quality indicators like appraisal value. The following table presents the amortized cost basis of individually analyzed collateral-dependent loans by loan portfolio segment: Type of Collateral (In thousands) Real Estate Investment Securities/Cash Other December 31, 2024 Construction $ 594 $ — $ — Commercial multifamily 4,129 — — Commercial real estate owner occupied 1,562 — — Commercial real estate non-owner occupied 294 — — Commercial and industrial 4,828 — 700 Residential real estate 1,243 — — Home equity 49 — — Consumer other — — — Total loans $ 12,699 $ — $ 700 Type of Collateral (In thousands) Real Estate Investment Securities/Cash Other December 31, 2023 Construction $ — $ — $ — Commercial multifamily — — — Commercial real estate owner occupied 650 — — Commercial real estate non-owner occupied 342 — — Commercial and industrial 4,788 — 944 Residential real estate 5,035 — — Home equity 135 — — Consumer other 40 — — Total loans $ 10,990 $ — $ 944 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 December 31, 2024 and December 31, 2023 that were both experiencing financial difficulty and modified during the year ended December 31, 2024 and December 31, 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 Year ended December 31, 2024 Construction $ — $ — $ — $ — $ — $ — — % Commercial multifamily — — — — — — — Commercial real estate owner occupied — — — — — — — Commercial real estate non-owner occupied — — 12,356 — — 645 0.47 Commercial and industrial — 87 12,236 — — — 0.86 Residential real estate — — — — — — — Home equity — — — — — — — Consumer other — — — — — — — Total $ — $ 87 $ 24,592 $ — $ — $ 645 0.27 % The Company has committed to lend additional amounts totaling $8.8 million to the borrowers included in the previous table. (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 Year ended December 31, 2023 Construction $ — $ — $ — $ — $ — $ — — % Commercial multifamily — — — — — — — Commercial real estate owner occupied — — 222 — — — 0.04 Commercial real estate non-owner occupied — — 11,454 — — 3,600 0.58 Commercial and industrial — 34 16,005 — — 9 1.18 % Residential real estate — — — — — — — Home equity — — — — — — — Consumer other — — — — — — — Total $ — $ 34 $ 27,681 $ — $ — $ 3,609 0.35 % The Company has committed to lend additional amounts totaling $7.8 million 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. The following table presents the performance of such loans that have been modified in the last 12 months. (In thousands) 30 - 59 Days Past Due 60 - 89 Days Past Due Greater Than 89 Days Past Due Total Past Due December 31, 2024 Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied — — — — Commercial real estate non-owner occupied — — — — Commercial and industrial — — — — Residential real estate — — — — Home equity — — — — Consumer other — — — — Total $ — $ — $ — $ — (In thousands) 30 - 59 Days Past Due 60 - 89 Days Past Due Greater Than 89 Days Past Due Total Past Due December 31, 2023 Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied — — — — Commercial real estate non-owner occupied — — — — Commercial and industrial 34 — — 34 Residential real estate — — — — Home equity — — — — Consumer other — — — — Total $ 34 $ — $ — $ 34 The following table presents the financial effect of the loan modifications presented above to borrowers experiencing financial difficulty for the years ended December 31, 2024 and 2023: (In thousands) Principal Forgiveness Weighted Average Interest Rate Reduction Weighted Average Term Extension (months) Years ended December 31, 2024 Construction $ — — % 0 Commercial multifamily — — 0 Commercial real estate owner occupied — — 0 Commercial real estate non-owner occupied — 2.62 26 Commercial and industrial — — 28 Residential real estate — — 0 Home equity — — 0 Consumer other — — 0 (In thousands) Principal Forgiveness Weighted Average Interest Rate Reduction Weighted Average Term Extension (months) Years ended December 31, 2023 Construction $ — — % 0 Commercial multifamily — — 0 Commercial real estate owner occupied — — 120 Commercial real estate non-owner occupied — 0.05 16 Commercial and industrial — 1.25 23 Residential real estate — — 0 Home equity — — 0 Consumer other — — 0 The following table presents the amortized cost basis of loans that had a payment default during the year ended December 31, 2024 and were modified in the twelve months prior to that default to borrowers experiencing financial difficulty. (in thousands) Principal Forgiveness Payment Delay Term Extension Interest Rate Reduction Year ended December 31, 2024 Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied — — — — Commercial real estate non-owner occupied — — — — Commercial and industrial — — 202 — Residential real estate — — — — Home equity — — — — Consumer other — — — — Total $ — $ — $ 202 $ — There were no loans that had a payment default during the years ended December 31, 2023 that were modified in the twelve months prior to that default to borrowers experiencing financial difficulty.

PREMISES AND EQUIPMENT

PREMISES AND EQUIPMENT	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
PREMISES AND EQUIPMENT	PREMISES AND EQUIPMENT Year-end premises and equipment are summarized as follows: (In thousands) 2024 2023 Estimated Useful Land $ 11,828 $ 12,525 N/A Buildings and improvements 72,576 89,222 5 - 39 years Furniture and equipment 60,597 64,290 3 - 7 years Construction in process 3,738 327 Premises and equipment, gross 148,739 166,364 Accumulated depreciation and amortization (92,130) (97,449) Premises and equipment, net $ 56,609 $ 68,915 Depreciation and amortization expense for the years 2024, 2023, and 2022 amounted to $7.0 million, $8.4 million, and $9.6 million, respectively.

OTHER INTANGIBLES

OTHER INTANGIBLES	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
OTHER INTANGIBLES	OTHER INTANGIBLES The components of other intangible assets are as follows: (In thousands) Gross Intangible Accumulated Net Intangible December 31, 2024 Non-maturity deposits (core deposit intangible) $ 77,213 $ (63,093) $ 14,120 All other intangible assets 7,866 (6,922) 944 Total $ 85,079 $ (70,015) $ 15,064 December 31, 2023 Non-maturity deposits (core deposit intangible) $ 77,213 $ (58,965) $ 18,248 All other intangible assets 7,866 (6,450) 1,416 Total $ 85,079 $ (65,415) $ 19,664 Other intangible assets are amortized on a straight-line or accelerated basis over their estimated lives, which range from four fifteen years . Amortization expense related to intangibles totaled $4.6 million in 2024, $4.8 million in 2023, and $5.1 million in 2022. The estimated aggregate future amortization expense for intangible assets remaining at year-end 2024 is as follows: 2025- $4.5 million; 2026- $4.5 million; 2027- $3.6 million; 2028- $1.8 million; 2029 - $0.7 million; and none thereafter. For the years 2024, 2023, and 2022, no impairment charges were identified for the Company’s intangible assets.

OTHER ASSETS

OTHER ASSETS	12 Months Ended
	Dec. 31, 2024
Other Assets [Abstract]
OTHER ASSETS	OTHER ASSETS Year-end other assets are summarized as follows: (In thousands) 2024 2023 Capitalized servicing rights $ 11,790 $ 12,095 Accrued interest receivable 49,410 53,096 Accrued federal and state tax receivable 36,610 33,564 Right-of-use assets 50,195 47,348 Derivative assets 47,923 45,668 Deferred tax asset 97,449 110,068 Tax credits investments 35,597 16,644 Other 29,468 23,274 Total other assets $ 358,442 $ 341,757 The Bank sells loans in the secondary market and retains the right to service many of these loans. The Bank earns fees for the servicing provided. At years end 2024, 2023, and 2022, loans sold and serviced for others amounted to $1.5 billion, $1.4 billion, and $1.5 billion, respectively. Loans serviced for others are not included in the accompanying Consolidated Balance Sheets. The risks inherent in servicing assets relate primarily to changes in prepayments that result from shifts in interest rates. For the years 2024, 2023, and 2022, contractually specified servicing fees were $6.2 million, $6.7 million, and $5.5 million, respectively, and are included as a component of loan related fees within non-interest income Servicing rights activity was as follows: (In thousands) 2024 2023 2022 Balance at beginning of year $ 12,095 $ 13,047 $ 16,022 Additions 3,746 2,892 3,119 Amortization (3,895) (4,330) (4,590) Payoffs (1,056) (952) (958) Allowance adjustment 900 1,438 (546) Balance at end of year $ 11,790 $ 12,095 $ 13,047 (1) As of December 31, 2024 and December 31, 2023, the servicing rights included in the total balance accounted for at fair value were $1.2 million and $1.5 million, respectively. At December 31, 2024, the fair value of servicing rights was $17.7 million. At December 31, 2023, the fair value of servicing rights was $16.6 million.

DEPOSITS

DEPOSITS	12 Months Ended
	Dec. 31, 2024
Deposits [Abstract]
DEPOSITS	DEPOSITS A summary of year-end time deposits is as follows: (In thousands) 2024 2023 Maturity date: Within 1 year $ 2,295,935 $ 2,364,280 Over 1 year to 2 years 252,981 270,630 Over 2 years to 3 years 10,574 26,039 Over 3 years to 4 years 6,800 9,020 Over 4 years to 5 years 3,754 9,864 Over 5 years 6,638 6,417 Total $ 2,576,682 $ 2,686,250 Account balances: Less than $100,000 $ 707,936 $ 724,911 $100,000 through $250,000 1,157,227 1,276,175 $250,000 or more 711,519 685,164 Total $ 2,576,682 $ 2,686,250 Included in total deposits on the Consolidated Balance Sheets are brokered deposits of $440.0 million and $524.4 million at December 31, 2024 and December 31, 2023, respectively. Also included in total deposits are reciprocal deposits of $138.5 million and $110.2 million at December 31, 2024 and December 31, 2023, respectively, as well as related party deposits of $24.4 million and $25.0 million at December 31, 2024 and December 31, 2023, respectively.

BORROWED FUNDS

BORROWED FUNDS	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
BORROWED FUNDS	BORROWED FUNDS Borrowed funds at December 31, 2024 and 2023 are summarized, as follows: 2024 2023 (in thousands, except rates) Principal Weighted Principal Weighted Short-term borrowings: Advances from the FHLBB $ 103,500 5.33 % $ 260,000 5.54 % Total short-term borrowings: 103,500 5.33 260,000 5.54 Long-term borrowings: Advances from the FHLBB 212,982 4.48 125,223 4.80 Subordinated notes 98,532 5.50 98,335 5.50 Junior subordinated borrowing - Trust I 15,464 6.63 15,464 7.49 Junior subordinated borrowing - Trust II 7,616 6.32 7,564 7.35 Total long-term borrowings: 334,594 4.92 246,586 5.33 Total $ 438,094 5.02 % $ 506,586 5.44 % Short-term debt includes Federal Home Loan Bank of Boston (“FHLBB”) advances with an original maturity of less than one year. The Bank maintains a $3.0 million secured line of credit with the FHLBB that bears a daily adjustable rate calculated by the FHLBB. There was no outstanding balance on the FHLBB line of credit for the periods ended December 31, 2024 and December 31, 2023. The Bank's available borrowing capacity with the FHLBB was $2.5 billion for both the periods ended December 31, 2024 and December 31, 2023. The Company was in compliance with all debt covenants as of December 31, 2024. The Bank is approved to borrow on a short-term basis from the Federal Reserve Bank of Boston as a non-member bank. The Bank has pledged certain loans and securities to the Federal Reserve Bank to support this arrangement. No borrowings with the Federal Reserve Bank of Boston took place for the periods ended December 31, 2024 and December 31, 2023. The Bank's available borrowing capacity with the Federal Reserve Bank was $1.6 billion and $1.5 billion for the periods ended December 31, 2024 and December 31, 2023, respectively. Long-term FHLBB advances consist of advances with an original maturity of more than one year and are subject to prepayment penalties. There were no callable advances outstanding at December 31, 2024. The advances outstanding at December 31, 2024 included amortizing advances totaling $6.0 million. There were no callable advances outstanding at December 31, 2023. The advances outstanding at December 31, 2023 included amortizing advances totaling $4.2 million. All FHLBB 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 FHLBB advances at year-end 2024 is as follows: 2024 (In thousands) Amount Weighted Fixed rate advances maturing: 2025 $ 258,500 5.08 % 2026 25,484 3.75 2027 25,147 3.65 2028 779 — 2029 and beyond 6,572 0.68 Total FHLBB advances $ 316,482 4.76 % The Company did not have variable-rate FHLB advances for the period ended December 31, 2024 and December 31, 2023. 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 $1.5 million for unamortized debt issuance costs as of December 31, 2024. The Company holds 100% of the common stock of Berkshire Hills Capital Trust I (“Trust I”) which is included in other assets with a cost of $0.5 million. The sole asset of Trust I is $15.5 million of the Company’s junior subordinated debentures due in 2035. These debentures bear interest at a variable rate equal to LIBOR plus 1.85% and had a rate of 6.63% and 7.49% at December 31, 2024 and December 31, 2023, 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 on each quarterly payment date. Trust I is considered a variable interest entity for which the Company is not the primary beneficiary. Accordingly, Trust I is not consolidated into the Company’s financial statements. The Company holds 100% of the common stock of SI Capital Trust II (“Trust II”) which is included in other assets with a cost of $0.2 million. The sole asset of Trust II is $8.2 million of the Company’s junior subordinated debentures due in 2036. These debentures bear interest at a variable rate equal to LIBOR plus 1.70% and had a rate of 6.32% and 7.35% at December 31, 2024 and December 31, 2023. 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.

OTHER LIABILITIES

OTHER LIABILITIES	12 Months Ended
	Dec. 31, 2024
Other Liabilities Disclosure [Abstract]
OTHER LIABILITIES	OTHER LIABILITIES Year-end other liabilities are summarized as follows: (In thousands) 2024 2023 Derivative liabilities $ 79,039 $ 75,957 Collateral on interest rate swaps 32,500 25,520 Finance lease liabilities 891 8,681 Employee benefits liability 38,772 43,042 Operating lease liabilities 55,986 53,026 Delayed equity contributions 18,743 — Accrued interest payable 9,005 13,766 Customer transaction clearing accounts 7,931 12,366 Allowance for credit losses on unfunded commitments 9,821 9,256 Other 39,998 37,016 Total other liabilities $ 292,686 $ 278,630

EMPLOYEE BENEFIT PLANS

EMPLOYEE BENEFIT PLANS	12 Months Ended
	Dec. 31, 2024
Retirement Benefits [Abstract]
EMPLOYEE BENEFIT PLANS	EMPLOYEE BENEFIT PLANS Pension Plan The Company maintains a legacy, employer-sponsored defined benefit pension plan (the “Plan”) for which participation and benefit accruals were frozen on January 1, 2003. The Plan was assumed in connection with the Rome Bancorp acquisition in 2011. Accordingly, no employees are permitted to commence participation in the Plan and future salary increases and years of credited service are not considered when computing an employee’s benefits under the Plan. As of December 31, 2024, all minimum Employee Retirement Income Security Act (“ERISA”) funding requirements have been met. Information regarding the pension plan is as follows: December 31, (In thousands) 2024 2023 Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 3,642 $ 3,729 Service Cost 42 59 Interest cost 175 186 Actuarial loss (360) (20) Benefits paid (264) (250) Settlements — (62) Projected benefit obligation at end of year 3,235 3,642 Accumulated benefit obligation 3,235 3,642 Change in fair value of plan assets: Fair value of plan assets at plan beginning of year 4,999 4,683 Actual return on plan assets 521 628 Contributions by employer — — Benefits paid (264) (250) Settlements — (62) Fair value of plan assets at end of year 5,256 4,999 (Overfunded) status $ (2,021) $ (1,357) Amounts Recognized on Consolidated Balance Sheets Other assets $ 2,021 $ 1,357 Other liabilities — — Net periodic pension cost is comprised of the following: December 31, (In thousands) 2024 2023 2022 Service Cost $ 42 $ 59 $ 68 Interest Cost 175 186 141 Expected return on plan assets (316) (295) (376) Amortization of unrecognized actuarial loss — 6 11 Net periodic pension (credit) $ (99) $ (44) $ (156) Changes in plan assets and benefit obligations recognized in accumulated other comprehensive income are as follows: December 31, (In thousands) 2024 2023 2022 Amortization of actuarial (loss) $ — $ (6) $ (11) Actuarial (gain) (565) (353) (154) Settlement charge — — — Total recognized in accumulated other comprehensive income (565) (359) (165) Total recognized in net periodic pension cost recognized and other comprehensive income $ (664) $ (403) $ (321) The amounts in accumulated other comprehensive income/(loss) that have not yet been recognized as components of net periodic benefit cost are a net (gain)/loss of $(0.4) million, $0.1 million, and $0.5 million in 2024, 2023 and 2022, respectively. The Company did not make any cash contributions to the pension trust during 2024 and 2023. The Company does not expect to make any cash contributions in 2025. There is no gain/loss expected to be amortized from other comprehensive income into net periodic pension cost over the next fiscal year. The principal actuarial assumptions used are as follows: December 31, 2024 2023 2022 Projected benefit obligation Discount rate 5.55 % 4.99 % 5.21 % Net periodic pension cost Discount rate 4.99 % 5.21 % 2.73 % Long term rate of return on plan assets 6.50 % 6.50 % 6.50 % The discount rate that is used in the measurement of the pension obligation is determined by comparing the expected future retirement payment cash flows of the pension plan to the Above Median FTSE Pension Discount Curve as of the measurement date. The expected long-term rate of return on Plan assets reflects long-term earnings expectations on existing Plan assets and those contributions expected to be received during the current plan year. In estimating that rate, appropriate consideration was given to historical returns earned by Plan assets in the fund and the rates of return expected to be available for reinvestment. The rates of return were adjusted to reflect current capital market assumptions and changes in investment allocations. The Company’s overall investment strategy with respect to the Plan’s assets is primarily for preservation of capital and to provide regular dividend and interest payments. The Plan’s targeted asset allocation is 65% equity securities via investment in the Long-Term Growth - Equity Portfolio ("LTGE"), 34% intermediate-term investment grade bonds via investment in the Long-Term Growth - Fixed-Income Portfolio ("LTGFI"), and 1% in cash equivalents portfolio (for liquidity). Equity securities include investments in a diverse mix of equity funds to gain exposure in the US and international markets. The fixed income portion of the Plan assets is a diversified portfolio that primarily invests in intermediate-term bond funds. The overall rate of return is based on the historical performance of the assets applied against the Plan’s target allocation, and is adjusted for the long-term inflation rate. The fair values for investment securities are determined by quoted prices in active markets, if available (Level 1). For securities where quoted prices are not available, fair values are calculated based on market prices of similar securities (Level 2). For securities where quoted prices or market prices of similar securities are not available, fair values are calculated using discounted cash flows or other market indicators (Level 3). The fair value of the Plan’s assets by category within the fair value hierarchy are as follows at December 31, 2024 and December 31, 2023. During 2023, the Plan's equity mutual funds and fixed income mutual funds were transferred to Level 1 from Level 2 because they are actively traded and quoted prices were available. The Plan did not hold any assets classified as Level 3. December 31, 2024 Asset Category (In thousands) Total Level 1 Level 2 Equity Mutual Funds: Large-Cap $ 1,615 $ 1,615 $ — Mid-Cap 398 398 — Small-Cap 413 413 — International 811 811 — Fixed Income Mutual Funds: Intermediate Duration 1,614 1,614 — Equity Common/Collective Trusts: Large-Cap 360 — 360 Cash Equivalents - money market 45 45 — Total $ 5,256 $ 4,896 $ 360 December 31, 2023 Asset Category (In thousands) Total Level 1 Level 2 Equity Mutual Funds: Large-Cap $ 1,357 $ 1,357 $ — Mid-Cap 364 364 — Small-Cap 386 386 — International 828 828 — Fixed Income Mutual Funds Intermediate Duration 1,674 1,674 — Equity Common/Collective Trusts: Large-Cap 336 — 336 Cash Equivalents - money market 54 54 — Total $ 4,999 $ 4,663 $ 336 Estimated benefit payments under the pension plans over the next 10 years at December 31, 2024 are as follows: Year Payments (In thousands) 2025 254 2026 249 2027 244 2028 246 2029 - 2034 1,493 Multi-Employer Pension Plan As a result of the Company's acquisition of SI Financial Group, Inc. (“SIFI”), the Company participates in the Pentegra Defined Benefit Plan for Financial Institutions (the “DB Plan”), a tax-qualified defined benefit pension plan. The DB Plan operates as a multiple-employer plan under ERISA and the Internal Revenue Code, and as a multi-employer plan for accounting purposes. The DB Plan was frozen effective September 6, 2013. The Company made contributions of $345 thousand in 2024. As of July 1, 2024, the DB Plan held assets with a market value of $3.9 million and liabilities with a market value of $5.0 million. The funded status (market value of plan assets divided by funding target) of the DB Plan, was 80% as of July 1, 2024, as required by federal and state regulations. Market value of the DB Plan's assets reflects contributions received through June 30, 2024. There are no collective bargaining agreements in place that require contributions to the DB Plan by the Company. The DB Plan is a single plan under the Internal Revenue Code and, as a result, all of the assets stand behind all of the liabilities. Accordingly, contributions made by a participating employer may be used to provide benefits to participants of other participating employers. Postretirement Benefits The Company maintains an unfunded postretirement medical plan assumed in connection with the Rome Bancorp acquisition in 2011. The postretirement plan has been modified so that participation is closed to those employees who did not meet the retirement eligibility requirements by March 31, 2011. The Company contributes partially to medical benefits and life insurance coverage for retirees. Such retirees and their surviving spouses are responsible for the remainder of the medical benefits, including increases in premiums levels, between the total premium and the Company’s contribution. The Company also has an executive long-term care (“LTC”) postretirement benefit plan which started August 1, 2014. The LTC plan reimburses executives for certain costs in the event of a future chronic illness. Funding of the plan comes from Company paid insurance policies or direct payments. At the plan’s inception, a $558 thousand benefit obligation was recorded against equity representing the prior service cost of plan participants. Information regarding the postretirement plans is as follows: December 31, (In thousands) 2024 2023 Change in accumulated postretirement benefit obligation: Accumulated post-retirement benefit obligation at beginning of year $ 3,306 $ 3,215 Service Cost 8 7 Interest cost 165 166 Participant contributions — — Actuarial loss (289) 58 Benefits paid (108) (140) Accumulated post-retirement benefit obligation at end of year $ 3,082 $ 3,306 Change in plan assets: Fair value of plan assets at beginning of year $ — $ — Contributions by employer 108 140 Contributions by participant — — Benefits paid (108) (140) Fair value of plan assets at end of year $ — $ — Amounts Recognized on Consolidated Balance Sheets Other Liabilities $ 3,082 $ 3,306 Net periodic post-retirement cost is comprised of the following: December 31, (In thousands) 2024 2023 2022 Service cost $ 8 $ 7 $ 12 Interest costs 165 166 122 Amortization of net prior service credit 94 83 83 Amortization of net actuarial loss (51) (64) 30 Net periodic post-retirement costs $ 216 $ 192 $ 247 Changes in benefit obligations recognized in accumulated other comprehensive income are as follows: December 31, (In thousands) 2024 2023 2022 Amortization of prior service credit $ (94) $ (83) $ (83) Net actuarial (gain) (139) (1,148) (1,426) Total recognized in accumulated other comprehensive income (233) (1,231) (1,509) Accrued post-retirement liability recognized $ 3,082 $ 3,306 $ 3,215 The amounts in accumulated other comprehensive income that have not yet been recognized as components of net periodic benefit cost are as follows: December 31, (In thousands) 2024 2023 2022 Net prior service cost $ 981 $ 1,075 $ 1,159 Net actuarial (gain)/loss (928) (690) (812) Total recognized in accumulated other comprehensive income $ 53 $ 385 $ 347 The amount expected to be amortized from other comprehensive income/(loss) into net periodic postretirement cost over the next fiscal year is $61 thousand. The discount rates used in the measurement of the postretirement plan obligations are determined by comparing the expected future retirement payment cash flows of the plans to the Above Median FTSE Pension Discount Curve as of the measurement date. The assumed discount rates on a weighted-average basis were 5.52% and 4.98% as of December 31, 2024 and December 31, 2023, respectively. The Company has fixed contributions, therefore, the annual rate of increase in healthcare costs is not used in measuring the accumulated post-retirement benefit medical obligation. For participants in the LTC plan covered by insurance policies, no increase in annual premiums is assumed based on the history of the corresponding insurance provider. Estimated benefit payments under the post-retirement benefit plan over the next ten years at December 31, 2024 are as follows: Year Payments (In thousands) 2025 99 2026 97 2027 104 2028 101 2029 - 2034 900 401(k) Plan The Company provides a 401(k) Plan in which most eligible employees participate. Expenses related to the plan were $3.3 million in 2024, $3.1 million in 2023, and $2.9 million in 2022. Other Plans The Company maintains supplemental executive retirement plans (“SERPs”) for select current and former executives. Benefits generally commence no earlier than age sixty-two and are payable either as an annuity or as a lump sum at the executive’s option. Most of these SERPs were assumed in connection with acquisitions. At year-end 2024 and 2023, the accrued liability for these SERPs was $14.9 million and $16.7 million, respectively. SERP (benefit)/expense was $(0.4) million in 2024, $(1.0) million in 2023, and $2.0 million in 2022, and is recognized over the required service period. The Company has endorsement split-dollar arrangements pertaining to certain current and former executives and directors. Under these arrangements, the Company purchased policies insuring the lives of the executives and directors, and separately entered into agreements to split the policy benefits with the individuals. There are no post-retirement benefits associated with these policies. The Company also assumed split-dollar life insurance agreements from multiple prior acquisitions. The accrued liability for these split-dollar arrangements was $6.9 million as of year-end 2024 and $7.0 million as of year-end 2023.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES Provision for Income Taxes The components of the Company’s provision for income taxes for the years ended December 31, 2024, 2023, and 2022 were, as follows: (In thousands) 2024 2023 2022 Current: Federal tax expense $ 11,136 $ 5,596 $ 17,915 State tax expense 7,001 7,497 6,831 Total current tax expense 18,137 13,093 24,746 Deferred: Federal tax expense/(benefit) 1,135 (2,658) (2,274) State tax (benefit) (760) (1,711) (1,187) Total deferred tax expense/(benefit) 375 (4,369) (3,461) Change in valuation allowance — — — Income tax expense $ 18,512 $ 8,724 $ 21,285 Effective Tax Rate The following is a reconciliation of the statutory federal income tax rate to the Company’s effective tax rate for the years ended December 31, 2024, 2023, and 2022: 2024 2023 2022 (In thousands, except rates) Amount Rate Amount Rate Amount Rate Statutory tax rate $ 16,698 21.0 % $ 16,448 21.0 % $ 23,902 21.0 % Increase (decrease) resulting from: State taxes, net of federal tax benefit 4,722 6.2 4,570 5.8 4,459 3.9 Tax exempt income - investments, net (3,431) (4.3) (3,611) (4.6) (3,515) (3.1) Bank-owned life insurance (1,762) (2.2) (1,568) (2.0) (1,258) (1.1) Non-deductible merger costs 1,306 1.6 — — — — Tax credits, net of basis reduction 325 0.2 (7,804) (10.0) (2,129) (1.9) Other, net 654 0.8 689 0.9 (174) (0.1) Effective tax rate $ 18,512 23.3 % $ 8,724 11.1 % $ 21,285 18.7 % Deferred Tax Assets and Liabilities As of December 31, 2024 and 2023, significant components of the Company’s deferred tax assets and liabilities were, as follows: (In thousands) 2024 2023 Deferred tax assets: Allowance for credit losses $ 34,410 $ 31,181 Unrealized capital loss on tax credit investments 275 2,688 Net unrealized loss on securities available for sale, swaps, and pension in OCI 38,459 50,704 Employee benefit plans 11,571 12,102 Purchase accounting adjustments 3,240 4,587 Net operating loss carryforwards 99 202 Deferred loan fees 6,055 5,654 Lease liability 14,701 13,583 Premises and equipment 1,979 1,188 Nonaccrual interest 528 890 Intangible amortization 1,297 1,020 Other 2,176 2,337 Deferred tax assets, net before valuation allowances 114,790 126,136 Valuation allowance (400) (400) Deferred tax assets, net of valuation allowances $ 114,390 $ 125,736 Deferred tax liabilities: Loan servicing rights $ (1,126) $ (1,133) Unamortized tax credit reserve (1,949) (1,661) Right-of-use asset (13,866) (12,874) Deferred tax liabilities $ (16,941) $ (15,668) Deferred tax assets, net $ 97,449 $ 110,068 The Company’s net deferred tax asset decreased by $12.6 million during 2024 and $12.2 million of this change is related to unrealized losses in OCI. Deferred tax assets, net of valuation allowances, are expected to be realized through the reversal of existing taxable temporary differences and future taxable income. Valuation Allowances The components of the Company’s valuation allowance on its deferred tax asset, net as of December 31, 2024 and 2023 were, as follows: (in thousands) 2024 2023 State valuation allowances $ (400) $ (400) The state tax valuation allowance, net of Federal benefit, was originally recorded in 2012, due to management's assessment that it is more likely than not that certain deferred tax assets recorded for the difference between the book basis and the state tax basis in certain tax credit limited partnership investments (LPs) will not be realized. Management anticipates that the remaining excess state tax basis realized upon termination of these partnerships will be a capital loss upon disposition, and that capital loss may not be deductible in some of the Company's state tax jurisdictions. The valuation allowance as of December 31, 2024 is subject to change in the future as the Company continues to periodically assess the likelihood of realizing its deferred tax assets. Tax Attributes At December 31, 2024, the Company has no remaining federal net operating loss carryforwards. State net operating loss carryforwards, net of valuation allowance described above, are expected to be utilized in the future and begin to expire in 2035. The related gross deferred tax asset is $99 thousand. Unrecognized Tax Benefits On a periodic basis, the Company evaluates its income tax positions based on tax laws and regulations and financial reporting considerations, and records adjustments as appropriate. This evaluation takes into consideration the status of taxing authorities’ current examinations of the Company’s tax returns, recent positions taken by the taxing authorities on similar transactions, if any, and the overall tax environment in relation to uncertain tax positions. The following table presents changes in unrecognized tax benefits for the years ended December 31, 2024, 2023, and 2022: (In thousands) 2024 2023 2022 Unrecognized tax benefits at January 1 $ 1,824 $ 1,042 $ 1,025 Increase in gross amounts of tax positions related to prior years 1,456 782 17 Decrease in gross amounts of tax positions related to prior years (1,182) — — Unrecognized tax benefits at December 31 $ 2,098 $ 1,824 $ 1,042 It is reasonably possible that over the next twelve months the amount of unrecognized tax benefits may change from the reevaluation of uncertain tax positions arising in examinations, in appeals, or in the courts, or from the closure of tax statutes. The Company does not expect any significant changes in unrecognized tax benefits during the next twelve months. All of the Company’s unrecognized tax benefits, if recognized, would be recorded as a component of income tax expense, therefore, affecting the effective tax rate. The Company recognizes interest and penalties, if any, related to the liability for uncertain tax positions as a component of income tax expense. The accrual for interest and penalties was not material for all years presented.

DERIVATIVE INSTRUMENTS AND HEDG

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES	DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES At year-end 2024, the Company held derivatives with a total notional amount of $4.9 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 $4.1 billion and $10.5 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 $3.7 billion, risk participation agreements with dealer banks of $345.4 million, and $3.0 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, Capital and Compliance 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 December 31, 2024. The Company had no pledged collateral to derivative counterparties in the form of cash at year-end 2024. The Company had pledged securities to derivative counterparties with an amortized cost of $9.6 million and a fair value of $9.1 million at year-end 2024. The Company had no pledged collateral to derivative counterparties in the form of cash at year-end 2023. The Company had pledged securities to derivative counterparties with an amortized cost of $9.8 million and a fair value of $9.6 million at year-end 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 interest rate swap agreements and non-hedging derivative assets and liabilities at December 31, 2024 follows: Notional Weighted Weighted Average Rate Estimated December 31, 2024 Received Contract pay rate (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on commercial loans (1) $ 600,000 0.9 3.64 % 4.53 % $ — Interest rate collars on commercial loans 200,000 1.5 193 Total cash flow hedges 800,000 193 Economic hedges: Interest rate swap on tax advantaged economic development bond $ 5,297 4.9 5.03 % 5.09 % $ (79) Interest rate swaps on loans with commercial loan customers (1) 1,859,480 4.5 4.65 % 5.35 % (72,911) Reverse interest rate swaps on loans with commercial loan customers (1) 1,859,480 4.5 5.35 % 4.65 % 41,501 Risk participation agreements with dealer banks 345,367 5.1 56 Forward sale commitments 2,991 0.2 34 Total economic hedges 4,072,615 (31,399) Non-hedging derivatives: Commitments to lend 10,512 0.2 90 Total non-hedging derivatives 10,512 90 Total $ 4,883,127 $ (31,116) (1) Fair value estimates include the impact of $28.8 million settled to market contract agreements. Information about interest rate swap agreements and non-hedging derivative asset and liabilities at December 31, 2023 follows: Notional Weighted Weighted Average Rate Estimated December 31, 2023 Received Contract pay rate (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on commercial loans (1) $ 600,000 1.9 3.64 % 5.35 % $ — Interest rate collars on commercial loans 200,000 2.5 1,658 Total cash flow hedges 800,000 1,658 Economic hedges: Interest rate swap on tax advantaged economic development bond $ 6,202 5.9 5.82 % 5.09 % $ (172) Interest rate swaps on loans with commercial loan customers 1,795,562 4.9 4.36 % 6.27 % (63,865) Reverse interest rate swaps on loans with commercial loan customers (1) 1,795,562 4.9 6.27 % 4.36 % 32,053 Risk participation agreements with dealer banks 376,553 5.5 (18) Forward sale commitments 2,207 0.2 21 Total economic hedges 3,976,086 (31,981) Non-hedging derivatives: Commitments to lend 11,104 0.2 34 Total non-hedging derivatives 11,104 34 Total $ 4,787,190 $ (30,289) (1) Fair value estimates include the impact of $26.7 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/(loss) 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 December 31, 2024, the Company had eight interest rate swap contracts with a notional value of $600.0 million. The interest rate swaps have durations of one As of December 31, 2024, 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 one Amounts included in the Consolidated Statements of Income and in the other comprehensive income/(loss) section of the Consolidated Statements of Comprehensive Income/(Loss) (related to interest rate derivatives designated as hedges of cash flows), were as follows: Years Ended December 31, (In thousands) 2024 2023 2022 Interest rate swaps and collars on commercial loans: Unrealized gain/(loss) recognized in accumulated other comprehensive loss $ 596 $ 1,770 $ (6,667) Less: Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest income (632) (632) — Net tax benefit/(expense) on items recognized in accumulated other comprehensive income (321) (630) 1,789 Other comprehensive gain/(loss) recorded in accumulated other comprehensive income/(loss), net of reclassification adjustments and tax effects $ 907 $ 1,772 $ (4,878) Net interest expense recognized on hedged commercial loans $ 9,889 $ 9,026 $ (15) Economic hedges As of December 31, 2024 the Company has an interest rate swap with a $5.3 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 December 31, 2024. 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 earns 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. 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 held 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 sales 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 sales 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 to-be-announced 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 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. Commitments that relate to the origination of mortgage loans that will be held for sale are considered derivative financial instruments under applicable accounting guidance. Outstanding commitments 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 commitments are free-standing derivatives which are carried at fair value with changes recorded in non-interest income in the Company’s Consolidated Statements of Income. Changes in the fair value of commitments 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: Years Ended December 31, (In thousands) 2024 2023 2022 Economic hedges Interest rate swap on industrial revenue bond: Unrealized gain recognized in other non-interest income $ 93 $ 21 $ 941 Interest rate swaps on loans with commercial loan customers: Unrealized (loss)/gain recognized in other non-interest income (9,108) 31,310 (171,272) Favorable change in credit valuation adjustment recognized in other non-interest income — — 1,809 Reverse interest rate swaps on loans with commercial loan customers: Unrealized gain/(loss) recognized in other non-interest income 9,108 (31,310) 171,272 Risk Participation Agreements: Unrealized gain/(loss) recognized in other non-interest income 74 (74) (521) Forward Commitments: Unrealized gain/(loss) recognized in other non-interest income 13 13 (126) Non-hedging derivatives Commitments to lend: Unrealized gain/(loss) recognized in other non-interest income $ 56 $ 17 $ (107) Realized gain in other non-interest income 1,509 536 462 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 Balance Sheets. 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 $44.8 million and $39.8 million as of December 31, 2024 and December 31, 2023, respectively. The Company had net asset positions with its commercial banking counterparties totaling $3.1 million and $6.0 million as of December 31, 2024 and December 31, 2023, respectively. The Company had net liability positions with its financial institution counterparties totaling $3.1 million and $6.1 million as of December 31, 2024 and December 31, 2023, respectively. The Company had net liability positions with its commercial banking counterparties totaling $76.0 million and $69.8 million as of December 31, 2024 and December 31, 2023, respectively. The following table presents the assets and liabilities subject to an enforceable master netting arrangement as of December 31, 2024 and December 31, 2023: Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts of Assets Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2024 Interest Rate Swap Agreements: Institutional counterparties $ 76,242 $ (31,410) $ 44,832 $ — $ (32,500) $ 12,332 Commercial counterparties 3,092 — 3,092 — — 3,092 Total $ 79,334 $ (31,410) $ 47,924 $ — $ (32,500) $ 15,424 Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts of Liabilities Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2024 Interest Rate Swap Agreements: Institutional counterparties $ (5,741) $ 2,659 $ (3,082) $ 9,078 $ — $ 5,996 Commercial counterparties (76,003) — (76,003) — — (76,003) Total $ (81,744) $ 2,659 $ (79,085) $ 9,078 $ — $ (70,007) Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts of Assets Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2023 Interest Rate Swap Agreements: Institutional counterparties $ 71,579 $ (31,812) $ 39,767 $ — $ — $ 39,767 Commercial counterparties 5,992 — 5,992 — — 5,992 Total $ 77,571 $ (31,812) $ 45,759 $ — $ — $ 45,759 Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts of Liabilities Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2023 Interest Rate Swap Agreements: Institutional counterparties $ (11,277) $ 5,142 $ (6,135) $ 9,633 $ — $ 3,498 Commercial counterparties (69,796) — (69,796) — — (69,796) Total $ (81,073) $ 5,142 $ (75,931) $ 9,633 $ — $ (66,298)

LEASES

LEASES	12 Months Ended
	Dec. 31, 2024
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 December 31, 2024, lease expiration dates ranged from 1 month to 15 years. The following table represents the Consolidated Balance Sheets classification of the Company’s right-of-use (“ROU”) assets and lease liabilities: (In thousands) December 31, 2024 December 31, 2023 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 50,195 $ 47,348 Finance lease right-of-use assets Premises and equipment, net 629 5,597 Total Lease Right-of-Use Assets $ 50,824 $ 52,945 Lease Liabilities Operating lease liabilities Other liabilities $ 55,986 $ 53,026 Finance lease liabilities Other liabilities 891 8,681 Total Lease Liabilities $ 56,877 $ 61,707 Supplemental information related to leases was as follows: December 31, 2024 December 31, 2023 Weighted-Average Remaining Lease Term (in years) Operating leases 8.1 8.3 Finance leases 13.0 10.8 Weighted-Average Discount Rate Operating leases 3.53 % 2.90 % 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 year ended December 31, 2024 was $8.9 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 year ended December 31, 2023 was $9.1 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 year ended December 31, 2022 was $9.7 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: (In thousands) December 31, 2024 December 31, 2023 December 31, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 8,302 $ 9,009 $ 9,438 Operating cash flows from finance leases 46 446 476 Financing cash flows from finance leases 47 593 555 The following table presents a maturity analysis of the Company’s lease liability by lease classification at December 31, 2024: (In thousands) Operating Leases Finance Leases 2025 $ 9,053 $ 93 2026 9,194 93 2027 8,507 93 2028 7,400 93 2029 6,494 93 Thereafter 23,250 744 Total undiscounted lease payments 63,898 1,209 Less amounts representing interest (7,912) (318) Lease liability $ 55,986 $ 891
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 December 31, 2024, lease expiration dates ranged from 1 month to 15 years. The following table represents the Consolidated Balance Sheets classification of the Company’s right-of-use (“ROU”) assets and lease liabilities: (In thousands) December 31, 2024 December 31, 2023 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 50,195 $ 47,348 Finance lease right-of-use assets Premises and equipment, net 629 5,597 Total Lease Right-of-Use Assets $ 50,824 $ 52,945 Lease Liabilities Operating lease liabilities Other liabilities $ 55,986 $ 53,026 Finance lease liabilities Other liabilities 891 8,681 Total Lease Liabilities $ 56,877 $ 61,707 Supplemental information related to leases was as follows: December 31, 2024 December 31, 2023 Weighted-Average Remaining Lease Term (in years) Operating leases 8.1 8.3 Finance leases 13.0 10.8 Weighted-Average Discount Rate Operating leases 3.53 % 2.90 % 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 year ended December 31, 2024 was $8.9 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 year ended December 31, 2023 was $9.1 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 year ended December 31, 2022 was $9.7 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: (In thousands) December 31, 2024 December 31, 2023 December 31, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 8,302 $ 9,009 $ 9,438 Operating cash flows from finance leases 46 446 476 Financing cash flows from finance leases 47 593 555 The following table presents a maturity analysis of the Company’s lease liability by lease classification at December 31, 2024: (In thousands) Operating Leases Finance Leases 2025 $ 9,053 $ 93 2026 9,194 93 2027 8,507 93 2028 7,400 93 2029 6,494 93 Thereafter 23,250 744 Total undiscounted lease payments 63,898 1,209 Less amounts representing interest (7,912) (318) Lease liability $ 55,986 $ 891

OTHER COMMITMENTS, CONTINGENCIE

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES	OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES Credit Related Financial Instruments. The Company is a party to financial instruments with off-balance-sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Such commitments involve, to varying degrees, elements of credit, and interest rate risk in excess of the amount recognized in the accompanying Consolidated Balance Sheets. The Company’s exposure to credit loss in the event of non-performance by the other party to the financial instrument is represented by the contractual amount of these commitments. The Company uses the same credit policies in making commitments as it does for on-balance-sheet instruments. A summary of financial instruments outstanding whose contract amounts represent credit risk is as follows at year-end: (In thousands) 2024 2023 Commitments to originate new loans $ 308,480 $ 256,877 Unused funds on commercial and other lines of credit 1,075,159 1,146,415 Unadvanced funds on home equity lines of credit 335,878 347,543 Unadvanced funds on construction and real estate loans 365,235 467,702 Standby letters of credit 34,042 18,975 Total $ 2,118,794 $ 2,237,512 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The commitments for lines of credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These letters of credit are primarily issued to support borrowing arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. The Company considers standby letters of credit to be guarantees and the amount of the recorded liability related to such guarantees was not material at year-end 2024 and 2023. The Company has $10.9 million of commitments remaining for historic tax credit investments as of December 31, 2024. Employment and Change in Control Agreements. The Company and the Bank have change in control agreements with several officers which provide a severance payment in the event employment is terminated in conjunction with a defined change in control. Legal Claims.

SHAREHOLDERS' EQUITY AND EARNIN

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE	SHAREHOLDERS’ EQUITY AND EARNINGS PER COMMON SHARE Minimum Regulatory Capital Requirements The Company and Bank are subject to various regulatory capital requirements administered by the federal and state banking agencies. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if imposed, could have a direct material impact on the Company’s Consolidated Financial Statements. Under capital adequacy guidelines and the regulatory framework for prompt corrective action, the Company and Bank must meet specific capital guidelines that involve quantitative measures of its assets, liabilities and certain off-balance-sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weighting and other factors. Quantitative measures established by regulation to ensure capital adequacy require the Company and Bank to maintain minimum amounts and ratios (set forth in the following table) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined) and of Tier 1 capital to average assets (as defined). As of year-end 2024 and 2023, the Bank and the Company met the capital adequacy requirements. Regulators may set higher expected capital requirements in some cases based on their examinations. At December 31, 2024, the capital levels of both the Company and the Bank exceeded all regulatory capital requirements and their regulatory capital ratios were above the minimum levels. The capital levels of both the Company and the Bank at December 31, 2024 also exceeded the minimum capital requirements including the currently applicable BASEL III capital conservation buffer of 1.875%. As of year-end 2024 and 2023, 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 following tables. The Company and Bank’s actual and required capital amounts were as follows: Minimum Actual (Dollars in thousands) Amount Ratio Amount Ratio December 31, 2024 Company (Consolidated) Total capital to risk-weighted assets $ 1,505,487 15.45 % $ 779,790 8.00 % Common Equity Tier 1 Capital to risk weighted assets 1,266,641 12.99 438,632 4.50 Tier 1 capital to risk-weighted assets 1,289,029 13.22 584,843 6.00 Tier 1 capital to average assets 1,289,029 10.97 389,895 4.00 Total risk-weighted assets 9,747,379 N/A N/A N/A December 31, 2023 Company (Consolidated) Total capital to risk-weighted assets $ 1,371,740 14.36 % $ 764,130 8.00 % Common Equity Tier 1 Capital to risk weighted assets 1,149,620 12.04 429,823 4.50 Tier 1 capital to risk-weighted assets 1,171,957 12.27 573,098 6.00 Tier 1 capital to average assets 1,171,957 9.65 382,065 4.00 Total risk-weighted assets 9,551,627 N/A N/A N/A Minimum Minimum to be Well Actual (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio December 31, 2024 Bank Total capital to risk-weighted assets $ 1,342,307 13.78 % $ 779,226 8.00 % $ 974,032 10.00 % Common Equity Tier 1 Capital to risk weighted assets 1,225,075 12.58 438,314 4.50 633,121 6.50 Tier 1 capital to risk-weighted assets 1,225,075 12.58 584,419 6.00 779,226 8.00 Tier 1 capital to average assets 1,225,075 10.44 389,613 4.00 487,016 5.00 Total risk-weighted assets 9,740,322 N/A N/A N/A N/A N/A December 31, 2023 Bank Total capital to risk-weighted assets $ 1,268,037 13.29 % $ 763,503 8.00 % $ 954,379 10.00 % Common Equity Tier 1 Capital to risk weighted assets 1,167,282 12.23 429,470 4.50 620,346 6.50 Tier 1 capital to risk-weighted assets 1,167,282 12.23 572,627 6.00 763,503 8.00 Tier 1 capital to average assets 1,167,282 9.61 381,751 4.00 477,189 5.00 Total risk-weighted assets 9,543,786 N/A N/A N/A N/A N/A Common stock The Bank is subject to dividend restrictions imposed by various regulators, including a limitation on the total of all dividends that the Bank may pay to the Company in any calendar year. The total of all dividends shall not exceed the Bank’s net income for the current year (as defined by statute), plus the Bank’s net income retained for the two previous years, without regulatory approval. Dividends from the Bank are an important source of funds to the Company to make dividend payments on its common, to make payments on its borrowings, and for its other cash needs. The ability of the Company and the Bank to pay dividends is dependent on regulatory policies and regulatory capital requirements. The ability to pay such dividends in the future may be adversely affected by new legislation or regulations, or by changes in regulatory policies relating to capital, safety and soundness, and other regulatory concerns. The payment of dividends by the Company is subject to Delaware law, which generally limits dividends to an amount equal to an excess of the net assets of a company (the amount by which total assets exceed total liabilities) over statutory capital, or if there is no excess, to the Company’s net profits for the current and/or immediately preceding fiscal year. Accumulated other comprehensive income Year-end components of accumulated other comprehensive (loss) are as follows: (In thousands) 2024 2023 Other accumulated comprehensive (loss), before tax: Net unrealized holding (loss) on AFS securities $ (142,127) $ (188,927) Net (loss) on effective cash flow hedging derivatives (3,037) (4,265) Net unrealized holding (loss) on pension plans 365 (528) Income taxes related to items of accumulated other comprehensive (loss): Net unrealized holding loss on AFS securities 37,716 49,401 Net loss on effective cash flow hedging derivatives 838 1,159 Net unrealized holding loss on pension plans (98) 144 Accumulated other comprehensive (loss) $ (106,343) $ (143,016) The following table presents the components of other comprehensive income/(loss) for the years ended December 31, 2024, 2023, and 2022: (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2024 Net unrealized holding gain on AFS securities: Net unrealized (loss) arising during the period $ (3,137) $ 1,878 $ (1,259) Less: reclassification adjustment for (losses) realized in net income (49,937) 13,563 (36,374) Net unrealized holding gain on AFS securities 46,800 (11,685) 35,115 Net gain on cash flow hedging derivatives: Net unrealized gain arising during the period 596 (149) 447 Less: reclassification adjustment for (losses) realized in net income (632) 172 (460) Net gain on cash flow hedging derivatives 1,228 (321) 907 Net unrealized holding gain on pension plans Net unrealized gain arising during the period 893 (242) 651 Less: reclassification adjustment for (losses) realized in net income — — — Net unrealized holding gain on pension plans 893 (242) 651 Other comprehensive income $ 48,921 $ (12,248) $ 36,673 (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2023 Net unrealized holding gain on AFS securities: Net unrealized gain arising during the period $ 22,903 $ (5,122) $ 17,781 Less: reclassification adjustment for (losses) realized in net income (25,057) 6,806 (18,251) Net unrealized holding gain on AFS securities 47,960 (11,928) 36,032 Net gain on cash flow hedging derivatives: Net unrealized gain arising during the period 1,770 (458) 1,312 Less: reclassification adjustment for (losses) realized in net income (632) 172 (460) Net gain on cash flow hedging derivatives 2,402 (630) 1,772 Net unrealized holding gain on pension plans Net unrealized gain arising during the period 316 (84) 232 Less: reclassification adjustment for (losses) realized in net income — — — Net unrealized holding gain on pension plans 316 (84) 232 Other comprehensive income $ 50,678 $ (12,642) $ 38,036 (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2022 Net unrealized holding (loss) on AFS securities: Net unrealized (loss) arising during the period $ (235,075) $ 60,920 $ (174,155) Less: reclassification adjustment for gains realized in net income 6 (2) 4 Net unrealized holding (loss) on AFS securities (235,081) 60,922 (174,159) Net (loss) on cash flow hedging derivatives: Net unrealized (loss) arising during the period $ (6,667) $ 1,789 $ (4,878) Less: reclassification adjustment for (losses) realized in net income — — — Net (loss) on cash flow hedging derivatives (6,667) 1,789 (4,878) Net unrealized holding gain on pension plans Net unrealized gain arising during the period 1,674 (446) 1,228 Less: reclassification adjustment for (losses) realized in net income — — — Net unrealized holding gain on pension plans 1,674 (446) 1,228 Other comprehensive (loss) $ (240,074) $ 62,265 $ (177,809) The following table presents the changes in each component of accumulated other comprehensive (loss)/income, for the years ended December 31, 2024, 2023, and 2022: (in thousands) Net unrealized holding gain (loss) on AFS Securities Net loss on effective cash flow hedging derivatives Net unrealized holding gain (loss) on pension plans Total Year Ended December 31, 2024 Balance at Beginning of Year $ (139,525) $ (3,106) $ (385) $ (143,016) Other comprehensive income before reclassifications (1,259) 447 651 (161) Amounts reclassified from accumulated other comprehensive income (36,374) (460) — (36,834) Total other comprehensive income 35,115 907 651 36,673 Balance at End of Period $ (104,410) $ (2,199) $ 266 $ (106,343) Year Ended December 31, 2023 Balance at Beginning of Year $ (175,557) $ (4,878) $ (617) $ (181,052) Other comprehensive (loss)/income before reclassifications 17,781 1,312 232 19,325 Amounts reclassified from accumulated other comprehensive income (18,251) (460) — (18,711) Total other comprehensive (loss)/income 36,032 1,772 232 38,036 Balance at End of Period $ (139,525) $ (3,106) $ (385) $ (143,016) Year Ended December 31, 2022 Balance at Beginning of Year $ (1,398) $ — $ (1,845) $ (3,243) Other comprehensive (loss)/income before reclassifications (174,155) (4,878) 1,228 (177,805) Amounts reclassified from accumulated other comprehensive income 4 — — 4 Total other comprehensive (loss)/income (174,159) (4,878) 1,228 (177,809) Balance at End of Period $ (175,557) $ (4,878) $ (617) $ (181,052) The following table presents the amounts reclassified out of each component of accumulated other comprehensive income/(loss) for the years ended December 31, 2024, 2023, and 2022: Affected Line Item in the Years Ended December 31, (in thousands) 2024 2023 2022 Realized (losses)/gains on AFS securities: $ (49,937) $ (25,057) $ 6 Non-interest income 13,563 6,806 (2) Tax expense (36,374) (18,251) 4 Realized (losses) on cash flow hedging derivatives: (632) (632) — Interest expense — — — Non-interest expense 172 172 — Tax benefit (460) (460) — Realized (losses) on pension plans: — — — Non-interest expense — — — Tax expense — — — Total reclassifications for the period $ (36,834) $ (18,711) $ 4 Earnings Per Common Share Basic earnings per common share (“EPS”) excludes dilution and is computed by dividing net income applicable to common stock by the weighted average number of common shares outstanding for the year. Diluted EPS reflects the potential dilution that could occur if securities or other contracts to issue common stock (such as stock options) were exercised or converted into additional common shares that would then share in the earnings of the entity. Diluted EPS is computed by dividing net income applicable to common stock by the weighted average number of common shares outstanding for the year, plus an incremental number of common-equivalent shares computed using the treasury stock method. Earnings per common share has been computed based on the following (average diluted shares outstanding is calculated using the treasury stock method): Years Ended December 31, (In thousands, except per share data) 2024 2023 2022 Net income $ 61,003 $ 69,598 $ 92,533 Average number of common shares issued 51,903 51,903 51,903 Less: average number of treasury shares 8,593 7,820 5,577 Less: average number of unvested stock award shares 802 795 762 Average number of basic common shares outstanding 42,508 43,288 45,564 Plus: dilutive effect of unvested stock award shares 253 216 345 Plus: dilutive effect of stock options outstanding — — 5 Average number of diluted common shares outstanding 42,761 43,504 45,914 Basic earnings per common share $ 1.44 $ 1.61 $ 2.03 Diluted earnings per common share $ 1.43 $ 1.60 $ 2.02

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
STOCK-BASED COMPENSATION PLANS	STOCK-BASED COMPENSATION PLANS The 2022 Equity Incentive Plan (the “2022 Plan”) permits the granting of a combination of Restricted Stock awards and incentive and non-qualified stock options (“Stock Options”) to employees and directors. A total of 1.2 million shares was authorized under the Plan. Awards may be granted as either Restricted Stock or Stock Options provided that any shares that are granted as Restricted Stock are counted against the share limit set forth as (1) one for every one share of Restricted Stock granted and (2) one for every one share of Stock Option granted. As of the 2022 Plan's effective date, all expired, canceled, and forfeited shares under the 2018 Plan are included in the 2022 Plan's available shares. As of year-end 2024, the Company had the ability to grant approximately 0.8 million shares under this plan. A summary of activity in the Company’s stock compensation plans is shown below: Non-vested Stock Stock Options Outstanding (Shares in thousands) Number of Shares Weighted- Average Number of Shares Weighted- Average Exercise Price Balance, December 31, 2023 785 $ 24.92 49 $ 26.46 Granted 500 23.25 — — Stock options exercised — — (5) 24.71 Stock awards vested (359) 12.56 — — Forfeited (130) 25.55 — — Expired — — — — Balance, December 31, 2024 796 $ 24.94 44 $ 26.65 Stock Awards The total compensation cost for stock awards recognized as expense was $8.3 million, $7.5 million, and $7.3 million, in the years 2024, 2023, and 2022, respectively. The total recognized tax benefit associated with this compensation cost was $2.3 million, $2.0 million, and $2.0 million, respectively. The weighted average fair value of stock awards granted was $23.25, $26.18, and $28.75 in 2024, 2023, and 2022, respectively. Stock awards vest over periods up to five years and are valued at the closing price of the stock on the grant date. Certain awards vest based on the Company's performance over established measurement periods. The total fair value of stock awards vested during 2024, 2023, and 2022 was $4.5 million, $5.6 million, and $5.1 million respectively. The unrecognized stock-based compensation expense related to unvested stock awards was $10.1 million as of year-end 2024. This amount is expected to be recognized over a weighted average period of two years. Option Awards Option awards are granted with an exercise price equal to the market price of the Company’s stock at the date of grant, and vest over periods up to five years. The options grant the holder the right to acquire a share of the Company’s common stock for each option held, and have a contractual life of ten years. As of year-end 2024, the weighted average remaining contractual term for options outstanding is one year. The Company generally issues shares from treasury stock as options are exercised. The fair value of each option grant is estimated on the date of grant using the Black-Scholes option-pricing model. The expected dividend yield and expected term are based on management estimates. The expected volatility is based on historical volatility. The risk-free interest rates for the expected term are based on the U.S. Treasury yield curve in effect at the time of the grant. The Company did not grant options during 2024 and 2023.

FAIR VALUE MEASUREMENTS

FAIR VALUE MEASUREMENTS	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
FAIR VALUE MEASUREMENTS	FAIR VALUE MEASUREMENTS A description of the valuation methodologies used for instruments 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 of Financial Instruments The following table summarizes assets and liabilities measured at fair value on a recurring basis as of year-end 2024 and 2023 segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: December 31, 2024 (In thousands) Level 1 Level 2 Level 3 Total Trading security $ — $ — $ 5,258 $ 5,258 Available-for-sale securities: U.S Treasuries 6,989 — — 6,989 Municipal bonds and obligations — 60,864 — 60,864 Agency collateralized mortgage obligations — 264,562 — 264,562 Agency residential mortgage-backed securities — 220,240 — 220,240 Agency commercial mortgage-backed securities — 66,711 — 66,711 Corporate bonds — 32,456 3,901 36,357 Marketable equity securities — 655 — 655 Loans held for investment — — 325 325 Loans held for sale — 3,076 — 3,076 Derivative assets — 47,799 124 47,923 Capitalized servicing rights — — 1,706 1,706 Derivative liabilities — 79,039 — 79,039 December 31, 2023 Level 1 Level 2 Level 3 Total (In thousands) Trading security $ — $ — $ 6,142 $ 6,142 Securities available for sale: U.S Treasuries 7,981 — — 7,981 Municipal bonds and obligations — 63,853 — 63,853 Agency collateralized mortgage obligations — 347,874 — 347,874 Agency residential mortgage-backed securities — 417,480 — 417,480 Agency commercial mortgage-backed securities — 145,326 — 145,326 Corporate bonds — 35,192 3,923 39,115 Other bonds and obligations — 656 656 Marketable equity securities 13,029 — — 13,029 Loans held for investment at fair value — — 374 374 Loans held for sale — 2,237 — 2,237 Derivative assets — 45,613 55 45,668 Capitalized servicing rights — — 1,526 1,526 Derivative liabilities — 75,957 — 75,957 During the years ended December 31, 2024, December 31, 2023 and December 31, 2022, there were no transfers between Level 1, 2 and 3. Trading Security at Fair Value. The Company holds one security designated as a trading security. It is a tax advantaged economic development bond issued to the Company by a local nonprofit which provides wellness and health programs. The determination of the fair value for 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 2 include most of the Company’s debt securities. The pricing on Level 2 and Level 3 was primarily sourced from third party pricing services, overseen by management, and is based on models that consider standard input factors such as dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and condition, among other things. Level 3 pricing includes inputs unobservable to market participants. Loans Held for Investment. The Company’s held for investment loan portfolio includes loans originated by Company and loans acquired through business combinations. The Company intends to hold these assets until maturity as a part of its business operations. For one acquired portfolio subset, the Company previously accounted for these purchased-credit impaired loans as a pool under ASC 310, as they were determined to have common risk characteristics. These loans were recorded at fair value on acquisition date and subsequently evaluated for impairment collectively. Upon adoption of ASC 326, the Company elected the fair value option on this portfolio, recognizing a $11.2 million fair value write-down charged to Retained Earnings, net of deferred tax impact, as of January 1, 2020. The fair value of this loan portfolio is determined based on a discounted cash flow methodology. Certain inputs to the fair value calculation are unobservable; therefore, the loans meet the definition of Level 3 assets. The discount rate used in the valuation is consistent with assets that have significant credit deterioration. The cash flow assumptions include payment schedules for loans with current payment histories and estimated collateral value for delinquent loans. All of these loans were nonperforming as of December 31, 2024. Aggregate Fair Value December 31, 2024 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 325 $ 6,541 $ (6,216) Aggregate Fair Value December 31, 2023 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 374 $ 8,809 $ (8,435) Loans held for sale. The Company elected the fair value option for all mortgage loans originated for sale ("HFS") that were 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 Aggregate Aggregate Fair Value December 31, 2024 (In thousands) Loans held for sale $ 3,076 $ 3,015 $ 61 Aggregate Aggregate Aggregate Fair Value December 31, 2023 (In thousands) Loans held for sale $ 2,237 $ 2,205 $ 32 The changes in fair value of loans held for sale for the year ended December 31, 2024 were gains of $29 thousand. The changes in fair value of loans held for sale for the year ended December 31, 2023 were gains of $17 thousand. The changes in fair value of loans held for sale for the year ended December 31, 2022 were gains of $169 thousand. During 2024, originations of loans held for sale totaled $184 million and sales of loans originated for sale totaled $182 million. During 2023, originations of loans held for sale totaled $85 million and sales of loans originated for sale totaled $84 million. During 2022, originations of loans held for sale totaled $20 million and sales of loans originated for sale totaled $25 million. Interest Rate Swaps. The valuation of the Company’s interest rate swaps is obtained from a third-party pricing service and is determined using a discounted cash flow analysis on the expected cash flows of each derivative. The pricing analysis is based on observable inputs for the contractual terms of the derivatives, including the period to maturity and interest rate curves. The Company incorporates credit valuation adjustments to appropriately reflect both its own nonperformance risk and the respective counterparty’s nonperformance risk in the fair value measurements. In adjusting the fair value of its derivative contracts for the effect of nonperformance risk, the Company has considered the impact of netting and any applicable credit enhancements, such as collateral postings. Although the Company has determined that the majority of the inputs used to value its interest rate derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. However, as of year-end 2024, the Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has 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 certain 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 commitment 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 to lend 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 hedging instruments, 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 sale 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 that were measured at fair value on a recurring basis at year-end 2024 and 2023: Assets (Liabilities) (In thousands) Trading Securities Available for Sale Loans Held for Investment Commitments to Lend Forward Capitalized Servicing Rights Balance as of December 31, 2022 $ 6,708 $ 4,000 $ 605 $ 17 $ 8 $ 1,846 Unrealized gain/(loss), net recognized in other non-interest income 294 — (128) 305 13 (320) Unrealized (loss) included in accumulated other comprehensive loss — (77) — — — — Paydown of asset (860) — (103) — — — Transfers to loans held for sale — — — (288) — — Balance as of December 31, 2023 $ 6,142 $ 3,923 $ 374 $ 34 $ 21 $ 1,526 Unrealized gain/(loss), net recognized in other non-interest income 21 — 27 1,256 13 180 Unrealized (loss) in included in accumulated other comprehensive loss — (22) — — — — Paydown of asset (905) — (76) — — — Transfers to loans held for sale — — (1,200) — — Balance as of December 31, 2024 $ 5,258 $ 3,901 $ 325 $ 90 $ 34 $ 1,706 Unrealized (losses)/gains relating to instruments still held at December 31, 2024 $ (39) $ (99) $ — $ 90 $ 34 $ — Unrealized (losses)/gains relating to instruments still held at December 31, 2023 $ (60) $ (77) $ — $ 34 $ 21 $ — Quantitative information about the significant unobservable inputs within Level 3 recurring assets/(liabilities) as of December 31, 2024 and 2023 are as follows: Fair Value Significant Unobservable Input Value (In thousands) December 31, 2024 Valuation Techniques Unobservable Inputs Assets Trading Security $ 5,258 Discounted Cash Flow Discount Rate 3.36 % Securities Available for Sale 3,901 Indication from Market Maker Price 97.53 % Loans held for investment 325 Discounted Cash Flow Discount Rate 25.00 % Collateral Value $0.0 - $18.8 Commitments to Lend 90 Historical Trend Closing Ratio 83.21 % Pricing Model Origination Costs, per loan $ 3 Forward Commitments 34 Historical Trend Closing Ratio 83.21 % Pricing Model Origination Costs, per loan $ 3 Capitalized Servicing Rights 1,706 Discounted cash flow Constant prepayment rate (CPR) 7.21 % Discount rate 10.09 % Total $ 11,314 Fair Value Significant (In thousands) December 31, 2023 Valuation Techniques Unobservable Inputs Assets Trading Security $ 6,142 Discounted Cash Flow Discount Rate 4.19 % Securities Available for Sale 3,923 Indication from Market Maker Price 98.07 % Loans held for investment 374 Discounted Cash Flow Discount Rate 25.00 % Collateral Value $0.0 -$18.3 Commitments to Lend 34 Historical Trend Closing Ratio 84.29 % Pricing Model Origination Costs, per loan $ 3 Forward Commitments 21 Historical Trend Closing Ratio 84.29 % Pricing Model Origination Costs, per loan $ 3 Capitalized Servicing Rights 1,526 Discounted cash flow Constant prepayment rate (CPR) 7.63 % Discount rate 11.08 % Total $ 12,020 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 on a non-recurring basis. December 31, 2024 Fair Value Measurements as of December 31, 2024 (In thousands) Level 3 Level 3 Assets Individually evaluated loans $ 2,195 December 2024 Capitalized servicing rights 10,084 December 2024 Total $ 12,279 December 31, 2023 Fair Value Measurements as of December 31, 2023 (In thousands) Level 3 Level 3 Assets Individually evaluated loans $ 4,395 December 2023 Capitalized servicing rights 10,569 December 2023 Total $ 14,964 Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets as of December 31, 2024 and 2023 are as follows: (in thousands) December 31, 2024 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Individually evaluated loans $ 2,195 Fair value of collateral Discounted Cash Flow- Loss Severity (100.00)% to (0.03)% ((66.97)%) Appraised value $0 to $180 ($153) Capitalized servicing rights 10,084 Discounted cash flow Constant prepayment rate (CPR) 4.87% to 14.58% (13.33%) Discount rate 10.47% to 12.97% (11.56%) Total Assets $ 12,279 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individual properties. (in thousands) December 31, 2023 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Individually evaluated loans $ 4,395 Fair value of collateral Discounted Cash Flow- Loss Severity (100.00)% to (0.08)% ((67.00)%) Appraised value $0 to $3,389 ($2,774) Capitalized servicing rights 10,569 Discounted cash flow Constant prepayment rate (CPR) 5.43% to 17.15% (12.31%) Discount rate 10.09% to 16.59% (13.82%) Total Assets $ 14,964 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individual properties. There were no Level 1 or Level 2 nonrecurring fair value measurements for year-end 2024 and 2023. 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 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, real estate collateral related nonrecurring fair value measurement adjustments 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, which represent exit price, and related carrying amounts, of the Company’s financial instruments. Certain financial instruments and all non-financial instruments are excluded from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein may not necessarily represent the underlying fair value of the Company. December 31, 2024 Carrying Fair (In thousands) Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 1,128,409 $ 1,128,409 $ 1,128,409 $ — $ — Trading security 5,258 5,258 — — 5,258 Marketable equity securities 655 655 — 655 — Securities available for sale 655,723 655,723 6,989 644,833 3,901 Securities held to maturity 507,658 433,382 — 432,280 1,102 FHLB stock and restricted equity securities 19,565 N/A N/A N/A N/A Net loans 9,270,294 8,984,103 — — 8,984,103 Loans held for sale 3,076 3,076 — 3,076 — Accrued interest receivable 49,410 49,410 — 49,410 — Derivative assets 47,923 47,923 — 47,799 124 Financial Liabilities Total deposits 10,375,204 10,367,636 — 10,367,636 — Short-term debt 103,500 103,635 — 103,635 — Long-term FHLB advances 212,982 209,736 — 209,736 — Subordinated notes 121,612 110,447 — 110,447 — Accrued interest payable 9,005 9,005 — 9,005 — Derivative liabilities 79,039 79,039 — 79,039 — December 31, 2023 Carrying Fair (In thousands) Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 1,203,244 $ 1,203,244 $ 1,203,244 $ — $ — Trading security 6,142 6,142 — — 6,142 Marketable equity securities 13,029 13,029 13,029 — — Securities available for sale 1,022,285 1,022,285 7,981 1,010,381 3,923 Securities held to maturity 543,351 476,228 — 474,742 1,486 FHLB stock and restricted equity securities 22,689 N/A N/A N/A N/A Net loans 8,934,329 8,768,108 — — 8,768,108 Loans held for sale 2,237 2,237 — 2,237 — Accrued interest receivable 53,096 53,096 — 53,096 — Derivative assets 45,668 45,668 — 45,613 55 Financial Liabilities Total deposits 10,633,384 10,615,655 — 10,615,655 — Short-term debt 260,000 260,035 — 260,035 — Long-term FHLB advances 125,223 123,747 — 123,747 — Subordinated notes 121,363 98,138 — 98,138 — Accrued interest payable 13,766 13,766 — 13,766 — Derivative liabilities 75,957 75,957 — 75,957 —

CONDENSED FINANCIAL STATEMENTS

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY	12 Months Ended
	Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract]
CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY	CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY Condensed financial information pertaining only to the Parent, Berkshire Hills Bancorp, is as follows. CONDENSED BALANCE SHEETS December 31, (In thousands) 2024 2023 Assets Cash due from Berkshire Bank $ 163,605 $ 98,452 Investment in subsidiaries 1,134,014 1,038,039 Other assets 218 399 Total assets $ 1,297,837 $ 1,136,890 Liabilities and Shareholders’ Equity Subordinated notes $ 121,612 $ 121,363 Accrued expenses 8,801 3,306 Shareholders’ equity 1,167,424 1,012,221 Total liabilities and shareholders’ equity $ 1,297,837 $ 1,136,890 CONDENSED STATEMENTS OF INCOME Years Ended December 31, (In thousands) 2024 2023 2022 Income: Dividends from subsidiaries $ 14,000 $ 62,000 $ 108,000 Other 53 50 23 Total income 14,053 62,050 108,023 Interest expense 5,697 5,697 7,044 Non-interest expenses 9,121 3,702 2,754 Total expense 14,818 9,399 9,798 Income before income taxes and equity in undistributed income of subsidiaries (765) 52,651 98,225 Income tax (benefit) (2,463) (2,500) (2,586) Income before equity in undistributed income of subsidiaries 1,698 55,151 100,811 Equity in undistributed results of operations of subsidiaries 59,305 14,447 (8,278) Net income 61,003 69,598 92,533 Comprehensive income/(loss) $ 97,676 $ 107,634 $ (85,276) CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, (In thousands) 2024 2023 2022 Cash flows from operating activities: Net income $ 61,003 $ 69,598 $ 92,533 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed results of operations of subsidiaries (59,305) (14,447) 8,278 Other, net 11,569 8,688 5,998 Net cash provided by operating activities 13,267 63,839 106,809 Cash flows from investing activities: Sale of securities — — — Net cash provided by investing activities — — — Cash flows from financing activities: Proceeds from issuance of long term debt — — 98,032 Repayment of long term debt — — (75,000) Net proceeds from common stock 100,000 — — Payment to repurchase common stock (17,536) (23,844) (124,519) Common stock cash dividends paid (30,940) (31,707) (24,527) Other, net 362 142 281 Net cash (used) in financing activities 51,886 (55,409) (125,733) Net change in cash and cash equivalents 65,153 8,430 (18,924) Cash and cash equivalents at beginning of year 98,452 90,022 108,946 Cash and cash equivalents at end of year $ 163,605 $ 98,452 $ 90,022

QUARTERLY DATA (UNAUDITED)

QUARTERLY DATA (UNAUDITED)	12 Months Ended
	Dec. 31, 2024
Quarterly Financial Information Disclosure [Abstract]
QUARTERLY DATA (UNAUDITED)	QUARTERLY DATA (UNAUDITED) Quarterly results of operations were as follows: 2024 2023 (In thousands, except per share data) Fourth Quarter Third Quarter Second Quarter First Quarter Fourth Quarter Third Quarter Second Quarter First Quarter Interest and dividend income $ 150,555 $ 157,268 $ 154,109 $ 152,006 $ 150,537 $ 148,021 $ 145,425 $ 132,316 Interest expense 63,700 69,209 65,577 63,866 62,116 57,687 52,666 34,783 Net interest income 86,855 88,059 88,532 88,140 88,421 90,334 92,759 97,533 Non-interest income 23,325 37,555 20,133 (32,599) (8,383) 17,465 17,094 16,606 Total revenue 110,180 125,614 108,665 55,541 80,038 107,799 109,853 114,139 Provision expense for credit losses 6,000 5,500 6,499 6,000 7,000 8,000 8,000 8,999 Non-interest expense 77,575 71,960 70,931 76,020 78,992 76,513 74,048 71,955 Income before income taxes 26,605 48,154 31,235 (26,479) (5,954) 23,286 27,805 33,185 Income tax expense/(benefit) 6,948 10,645 7,210 (6,291) (4,509) 3,741 3,944 5,548 Net income $ 19,657 $ 37,509 $ 24,025 $ (20,188) $ (1,445) $ 19,545 $ 23,861 $ 27,637 Basic earnings per share $ 0.46 $ 0.89 $ 0.57 $ (0.47) $ (0.03) $ 0.45 $ 0.55 $ 0.63 Diluted earnings per share $ 0.46 $ 0.88 $ 0.57 $ (0.47) $ (0.03) $ 0.45 $ 0.55 $ 0.63 Weighted average common shares outstanding: Basic 42,661 42,170 42,437 42,777 42,852 43,164 43,443 43,693 Diluted 43,064 42,454 42,508 43,028 43,101 43,347 43,532 44,036

NET INTEREST INCOME AFTER PROVI

NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	12 Months Ended
	Dec. 31, 2024
Banking and Thrift, Interest [Abstract]
NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES	NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES Presented below is net interest income after provision for credit losses for the three years ended 2024, 2023 and 2022, respectively: Years Ended December 31, (In thousands) 2024 2023 2022 Net interest income $ 351,586 $ 369,047 $ 344,597 Provision expense for credit losses 23,999 31,999 11,000 Net interest income after provision for credit losses 327,587 337,048 333,597 Total non-interest income 48,414 42,782 68,937 Total non-interest expense 296,486 301,508 288,716 Income before income taxes 79,515 78,322 113,818 Income tax expense 18,512 8,724 21,285 Net income 61,003 69,598 92,533

TAX EQUITY INVESTMENTS

TAX EQUITY INVESTMENTS	12 Months Ended
	Dec. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]
TAX EQUITY INVESTMENTS	TAX EQUITY INVESTMENTS The Company typically accounts for tax equity investments using the proportional amortization method, if certain criteria are met. The election to account for tax equity investments using the proportional amortization method is done so on a tax credit program-by-tax credit program basis. Under the proportional amortization method, the Company amortizes the initial cost of the investment, which is inclusive of any delayed equity contributions, that are unconditional and legally binding or for equity contributions that are contingent on a future event, when that event becomes probable, in proportion to the income tax credits and other income tax benefits that are allocated to the Company over the period of the investment. Under the proportional amortization method, the Company amortizes the initial cost of the investment, inclusive of delayed equity contributions, in proportion to the income tax credits and other income tax benefits that are allocated to the Company over the period of the investment. The net benefits of these investments, which are comprised of income tax credits and operating loss income tax benefits, net of investment amortization, are recognized in the Consolidated Statements of Income as a component of income tax expense. At December 31, 2024 and December 31, 2023 the carrying value of all tax equity investments was $35.6 million and $16.6 million, respectively, and were included in other assets on the Consolidated Balance Sheets. The carrying value of the investments accounted for under PAM on December 31, 2024 included $18.7 million of delayed equity contributions described in the chart below. The delayed equity contributions were included in other liabilities on the Consolidated Balance Sheets. As of December 31, 2024, the Company's delayed equity contributions were estimated to be paid as follows: (In thousands) Delayed Equity Contributions 2025 $ 11,680 2026 3,921 2027 2,887 2028 18 Thereafter 237 Total delayed equity contributions $ 18,743 The following table presents income tax credits and other income tax benefits, as well as amortization expense, associated with investments where the proportional amortization method of accounting has been applied for the periods indicated. (In thousands) Year Ended Provision for Income Taxes: Amortization of tax credit investments $ (10,420) Tax credit and other tax benefit/(expense) 11,934 Total provision for income taxes 1,514 There was no material non-income tax related expense associated with these investments recorded outside of income tax expense for the year ended December 31, 2024. The non-income tax related activity associated with these investments recorded outside of the income tax expense

REVENUE

REVENUE	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
REVENUE	REVENUE Revenue from contracts with customers in the scope of Topic 606 is recognized within noninterest income. The Company does not have any material significant payment terms as payment is received at or shortly after the satisfaction of the performance obligation. The value of unsatisfied performance obligations for contracts with an original expected length of one year or less are not disclosed. The Company recognizes incremental costs of obtaining contracts as an expense when incurred for contracts with a term of one year or less. Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities. In addition, certain non-interest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also not in scope of Topic 606. Topic 606 is applicable to non-interest revenue streams such as wealth management fees, administrative services for customer deposit accounts, interchange fees, and sale of owned real estate properties. The following presents non-interest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the years ended 2024, 2023, and 2022, respectively. Years Ended December 31, (In thousands) 2024 2023 2022 Non-interest income In-scope of Topic 606: Service charges on deposit accounts $ 24,084 $ 24,160 $ 22,396 Wealth management fees 10,840 10,197 10,008 Interchange income 8,298 8,395 8,470 Non-interest income (in-scope of Topic 606) $ 43,222 $ 42,752 $ 40,874 Non-interest income (out-of-scope of Topic 606) 5,192 30 28,063 Total non-interest income $ 48,414 $ 42,782 $ 68,937 Non-interest income streams in-scope of Topic 606 are discussed below. Service Charges on Deposit Accounts. Service charges on deposit accounts consist of monthly service fees (i.e. business analysis fees and consumer service charges) and other deposit account related fees. The Company's performance obligation for monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Other deposit account related fees are largely transactional based, and therefore, the Company's performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts. The Company may, from time to time, waive certain fees (e.g., NSF fee) for customers but generally do not reduce the transaction price to reflect variability for future reversals due to the insignificance of the amounts. Waiver of fees reduces the revenue in the period the waiver is granted to the customer. Wealth Management Fees. Wealth management fees are primarily comprised of fees earned from consultative investment management, trust administration, tax return preparation, and financial planning. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based on the daily accrual of the market value of the investment accounts and the applicable fee rate. Interchange Fees. Interchange fees are transaction fees paid to the card-issuing bank to cover handling costs, fraud and bad debt costs, and the risk involved in approving the payment. Due to the day-to-day nature of these fees they are settled on a daily basis and are accounted for as they are received. Gains/Losses on Sales of OREO. The sale of OREO and other nonfinancial assets are accounted for with the derecognition of the asset in question once a contract exists and control of the asset has been transferred to the buyer. The gain or loss on the sale is calculated as the difference between the carrying value of the asset and the transaction price.

BRANCH SALE

BRANCH SALE	12 Months Ended
	Dec. 31, 2024
Discontinued Operations and Disposal Groups [Abstract]
BRANCH SALE	BRANCH SALE During the third quarter of 2024, the Company completed the sale of ten of the Bank’s branches in upstate and eastern New York. The sale was made pursuant to definitive agreements entered into on March 4, 2024 with three buyers. The sale consisted of three separate transactions, which were completed during the third quarter of 2024. In the aggregate, the Bank sold $383 million in deposits and $50 million of related residential mortgage and consumer loans, along with all branch premises and equipment. The three buyers also assumed related operations and the employment of all associated staff. The sale excluded the Bank’s commercial banking business. The Company recorded a $16.0 million pre-tax gain

PENDING MERGER

PENDING MERGER	12 Months Ended
	Dec. 31, 2024
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
PENDING MERGER	PENDING MERGER On December 16, 2024, Berkshire Hills Bancorp, Inc., a Delaware corporation (“Berkshire”), Commerce Acquisition Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Berkshire (“Merger Sub”), and Brookline Bancorp, Inc., a Delaware corporation (“Brookline”), entered into an Agreement and Plan of Merger (the “Merger Agreement”). The Merger Agreement provides that, upon the terms and subject to the conditions set forth therein, Merger Sub will merge with and into Brookline, with Brookline as the surviving entity (the “Merger”), and immediately following the Merger, Brookline will merge with and into Berkshire, with Berkshire as the surviving entity (the “Holdco Merger”). The Merger Agreement further provides that immediately following the Merger, Berkshire Bank, a Massachusetts trust company and a wholly owned subsidiary of Berkshire, Bank Rhode Island, a Rhode Island-chartered bank and a wholly owned subsidiary of Brookline, and PCSB Bank, a New York-chartered bank and a wholly owned subsidiary of Brookline, each will merge with and into Brookline Bank, a Massachusetts trust company and a wholly owned subsidiary of Brookline, with Brookline Bank as the surviving bank (the “Bank Mergers” and, together with the Merger and the Holdco Merger, the “Proposed Transaction”). Upon the terms and subject to the conditions of the Merger Agreement, at the effective time of the Merger (the “Effective Time”), each share of common stock, $0.01 par value, of Brookline (“Brookline Common Stock”) outstanding immediately prior to the Effective Time, other than certain shares held by Brookline or Berkshire, will be converted into the right to receive 0.42 of a share (the “Exchange Ratio”) of common stock, par value $0.01 per share, of Berkshire (“Berkshire Common Stock”). Holders of Brookline Common Stock will receive cash in lieu of fractional shares of Berkshire Common Stock.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pay vs Performance Disclosure
Net income	$ 19,657	$ 37,509	$ 24,025	$ (20,188)	$ (1,445)	$ 19,545	$ 23,861	$ 27,637	$ 61,003	$ 69,598	$ 92,533

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Dec. 31, 2024
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

Insider Trading Policies and Pr

Insider Trading Policies and Procedures	12 Months Ended
	Dec. 31, 2024
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Cybersecurity Risk Management a

Cybersecurity Risk Management and Strategy Disclosure	12 Months Ended
	Dec. 31, 2024
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	The Company maintains a robust Information Security Program that sets forth the Company’s commitment to the continual review and improvement of policies, processes, procedures, and standards for evaluating electronic and physical methods of accessing, collecting, storing, using, transmitting, disposing, and protecting sensitive information including customer information under guidelines established as part of the Gramm Leach-Bliley Act (GLBA). The Company uses or adheres to relevant standards and frameworks from the Federal Financial Institutions Examination Council (FFIEC) and National Institute of Standards and Technology (NIST), among others, to assess information security risks and controls, as well as to assess the maturity and effectiveness of the Information Security Program. The Company maintains a robust Third-Party Risk Management program to manage risks related to third-party relationships in a manner that is consistent with the Company’s strategic goals, organizational objectives, and risk appetite. This includes comprehensive risk and control assessments to ensure sensitive information is safeguarded appropriately.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	The Company maintains a robust Information Security Program that sets forth the Company’s commitment to the continual review and improvement of policies, processes, procedures, and standards for evaluating electronic and physical methods of accessing, collecting, storing, using, transmitting, disposing, and protecting sensitive information including customer information under guidelines established as part of the Gramm Leach-Bliley Act (GLBA). The Company uses or adheres to relevant standards and frameworks from the Federal Financial Institutions Examination Council (FFIEC) and National Institute of Standards and Technology (NIST), among others, to assess information security risks and controls, as well as to assess the maturity and effectiveness of the Information Security Program.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	The Board of Directors and Executive Management are responsible for ensuring that the Information Security Program within Enterprise Risk Management identifies, measures, monitors, controls, and reports risk according to significance. If risks are determined to be undesired and beyond stated and aggregated Risk Appetites, the Board of Directors and Executive Management take appropriate action to ensure that excessive risk is mitigated or eliminated, which may include reducing risk exposure. The Board of Directors has final responsibility, after consultation with management, for ensuring the Information Security Program aligns with the overall business strategy and provides oversight to protect the Company from ongoing and emerging threats, including those related to cybersecurity.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	The ISO is responsible for the implementation, maintenance, and enforcement of the Information Security Program and related policies and standards.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Information Security Program is overseen by the Company’s Information Security Officer ("ISO"), who reports directly to the Chief Risk Officer. The ISO has held this position with the Company since May, 2024, and has worked at the Company in cybersecurity for almost 12 years and in the information technology industry for more than 16 years. The Chief Risk Officer has held the position at the Company since October 2016, when he joined the Company from the FDIC where he was employed for 24 years and held multiple positions including Senior Risk Examiner for the Division of Risk Management Supervision and Acting Regional Manager for the Division of Insurance and Research. During his tenure with the FDIC, the CRO served from time to time as the Examiner-in-Charge for Berkshire Bank and numerous other banks throughout New England.
Cybersecurity Risk Role of Management [Text Block]	The Board of Directors and Executive Management are responsible for ensuring that the Information Security Program within Enterprise Risk Management identifies, measures, monitors, controls, and reports risk according to significance. If risks are determined to be undesired and beyond stated and aggregated Risk Appetites, the Board of Directors and Executive Management take appropriate action to ensure that excessive risk is mitigated or eliminated, which may include reducing risk exposure. The Board of Directors has final responsibility, after consultation with management, for ensuring the Information Security Program aligns with the overall business strategy and provides oversight to protect the Company from ongoing and emerging threats, including those related to cybersecurity. The Information Security Program is overseen by the Company’s Information Security Officer ("ISO"), who reports directly to the Chief Risk Officer. The ISO has held this position with the Company since May, 2024, and has worked at the Company in cybersecurity for almost 12 years and in the information technology industry for more than 16 years. The Chief Risk Officer has held the position at the Company since October 2016, when he joined the Company from the FDIC where he was employed for 24 years and held multiple positions including Senior Risk Examiner for the Division of Risk Management Supervision and Acting Regional Manager for the Division of Insurance and Research. During his tenure with the FDIC, the CRO served from time to time as the Examiner-in-Charge for Berkshire Bank and numerous other banks throughout New England. The ISO is responsible for the implementation, maintenance, and enforcement of the Information Security Program and related policies and standards. The program is evaluated and adjusted at least annually based on the results of testing, monitoring, and the adoption of best practices. Reporting occurs annually on the status of the Information Security Program to the Board’s Risk Management, Capital & Compliance Committee. Reporting includes the overall status of the program, material matters related to the program, Key Risk Indicators ("KRIs"), cyber risk assessments results, emerging risks, risk management and control decisions, control testing results, third party security assessments, penetration test results, security breaches or violations, and recommendations for changes to the program. The Company maintains a robust Third-Party Risk Management program to manage risks related to third-party relationships in a manner that is consistent with the Company’s strategic goals, organizational objectives, and risk appetite. This includes comprehensive risk and control assessments to ensure sensitive information is safeguarded appropriately.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	The Information Security Program is overseen by the Company’s Information Security Officer ("ISO"), who reports directly to the Chief Risk Officer.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	The ISO has held this position with the Company since May, 2024, and has worked at the Company in cybersecurity for almost 12 years and in the information technology industry for more than 16 years. The Chief Risk Officer has held the position at the Company since October 2016, when he joined the Company from the FDIC where he was employed for 24 years and held multiple positions including Senior Risk Examiner for the Division of Risk Management Supervision and Acting Regional Manager for the Division of Insurance and Research.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	Reporting occurs annually on the status of the Information Security Program to the Board’s Risk Management, Capital & Compliance Committee. Reporting includes the overall status of the program, material matters related to the program, Key Risk Indicators ("KRIs"), cyber risk assessments results, emerging risks, risk management and control decisions, control testing results, third party security assessments, penetration test results, security breaches or violations, and recommendations for changes to the program.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2024
Accounting Policies [Abstract]
Basis of Presentation and Consolidation	Basis of Presentation and Consolidation 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.
Reclassification	Reclassification 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.
Cash and Cash equivalents	Cash and Cash equivalents Cash and cash equivalents include cash, balances due from banks, and short-term investments, all of which had an original maturity within 90 days. Due to the nature of cash and cash equivalents and the near term maturity, the Company estimated that the carrying amount of such instruments approximated fair value. The nature of the Bank’s business requires that it maintain amounts due from banks which at times, may exceed federally insured limits. The Bank has not experienced any losses on such amounts and all amounts are maintained with well-capitalized institutions.
Trading Security	Trading Security The Company accounts for a tax advantaged economic development bond originated in 2008 at fair value, in accordance with Financial Accounting Standards Board’s (“FASB”) Accounting Standards Codification (“ASC”) 320. The bond has been designated as a trading account security and is recorded at fair value, with changes in unrealized gains and losses recorded through earnings each period as part of non-interest income.
Securities	Securities Debt securities that management has the intent and ability to hold to maturity are classified as held to maturity and carried at amortized cost. All other debt securities are classified as available for sale and carried at fair value, with unrealized gains and losses reported as a component of other net comprehensive income. Equity securities are carried at fair value, with changes in fair value reported in net income. Management determines the appropriate classification of securities at the time of purchase. Restricted equity securities, such as stock in the Federal Home Loan Bank of Boston (“FHLBB”) are carried at cost. There are no quoted market prices for the Company’s restricted equity securities. The Bank is a member of the FHLBB, which requires that members maintain an investment in FHLBB stock, which may be redeemed based on certain conditions. The Bank reviews for impairment based on the ultimate recoverability of the cost bases in the FHLBB stock. Purchase premiums and discounts are recognized in interest income using the interest method, without anticipating prepayments, except mortgage-backed securities where prepayments are anticipated, over the terms of the securities. Premiums on callable debt securities are amortized to their earliest call date. Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. The Company measures expected credit losses on held to maturity debt securities on a collective basis. Accrued interest receivable on held to maturity debt securities is excluded from the estimate of credit losses. The estimate of expected credit losses considers historical credit loss information that is adjusted for current conditions and reasonable and supportable forecasts.
Loans Held for Sale	Loans Held for Sale Loans originated with the intent to be sold in the secondary market are accounted for under the fair value option. Non-refundable fees and direct loan origination costs related to residential mortgage loans held for sale are recognized in non-interest income or non-interest expense as earned or incurred. Fair value is primarily determined based on quoted prices for similar loans in active markets. Gains and losses on sales of residential mortgage loans (sales proceeds minus carrying value) are recorded in non-interest income. Loans that were previously held for investment that the Company has an active plan to sell are transferred to loans held for sale at the lower of cost or market (fair value). The market price is primarily determined based on quoted prices for similar loans in active markets or agreed upon sales prices. Gains are recorded in non-interest income at sale to the extent that the sale price of the loan exceeds carrying value. Any reduction in the loan’s value, prior to being transferred to loans held for sale, is reflected as a charge-off of the recorded investment in the loan resulting in a new cost basis, with a corresponding reduction in the allowance for credit losses. Further decreases in the fair value of the loan are recognized in non-interest expense.
Loans	Loans Loans are reported at their amortized cost. Amortized cost is the principal balance outstanding, net of the unamortized balance of any deferred fees or costs and the unamortized balance of any premiums or discounts on loans purchased or acquired through mergers. Interest income is accrued on the unpaid principal balance. Interest income includes net accretion or amortization of deferred fees or costs and of premiums or discounts. Direct loan origination costs, net of any origination fees, in addition to premiums and discounts on loans, are deferred and recognized as an adjustment of the related loan yield using the interest method. Interest on loans, excluding automobile and unsecured consumer loans, is generally not accrued on loans which are ninety days or more past due unless the loan is well-secured and in the process of collection. Past due status is based on contractual terms of the loan. Automobile and unsecured consumer loans generally continue accruing until one hundred and twenty days delinquent, at which time they are charged off. All interest accrued but not collected for loans that are placed on nonaccrual or charged-off is reversed against interest income, except for certain loans designated as well-secured. The interest on nonaccrual loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
Purchase Credit Deteriorated ("PCD") Loans	Purchase Credit Deteriorated ("PCD") Loans Loans that the Company acquired in acquisitions include some loans that have experienced more than insignificant credit deterioration since origination. PCD loans are recorded at the amount paid. An allowance for credit losses is determined using the same methodology as other loans held for investment. The initial allowance for credit losses determined on a collective basis is allocated to individual loans. The sum of the loan’s purchase price and allowance for credit losses becomes its initial amortized cost basis. The difference between the initial amortized cost basis and the par value of the loan is a noncredit discount or premium, which is amortized into interest income over the life of the loan. Subsequent changes to the allowance for credit losses are recorded through provision expense.
Allowance for Credit Losses on Loans	Allowance for Credit Losses on Loans The allowance for credit losses on loans (“ACLL”) is comprised of the allowance for credit losses on loans. The ACLL is a valuation account that is deducted from the loans’ amortized cost basis to present the net amount expected to be collected on the loans. Loans are charged off against the allowance when management believes the uncollectability of a loan balance is confirmed. Accrued interest receivable is excluded from the estimate of credit losses. 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 estimate of expected credit losses is based on relevant information about current conditions, past events, and reasonable and supportable forward-looking forecasts regarding collectability of the reported amounts. In order to estimate the expected credit losses for loans evaluated on a pooled basis, the Company utilizes a static pool migration methodology which calculates a historical loss rate for each of the identified loan segments. The historical loss rates are then adjusted for current and asset specific characteristics (also referred to as qualitative adjustments) and for expected changes to current conditions over the reasonable and supportable forecast period (also referred to as forecast).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 allowance for unfunded commitments is maintained at a level by the Company to be sufficient to absorb expected lifetime losses related to unfunded credit facilities (including unfunded loan commitments and letters of credit).) The Company’s allowance for credit losses on unfunded commitments is recognized as a liability (other liability on the Consolidated Balance Sheets), with adjustments to the reserve recognized in other noninterest expense in the Consolidated Statements of Income. The ACLL is measured on a collective (pool) basis when similar risk characteristics exist. The Company evaluates its risk characteristics of loans based on regulatory call report code with sub-segmentation based on underlying collateral for certain loan types. 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 this segment 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 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 of 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. Loans that do not share risk characteristics are evaluated on an individual basis and are not also included in the collective evaluation. Estimates of specific allowance may be determined by the present value of anticipated future cash flows or the loan’s observable fair market value, or the fair value of the collateral less costs to sell, if the loan is collateral dependent. However, for collateral dependent loans, the amount of the amortized cost in a loan that exceeds the fair value of the collateral is charged-off against the allowance for credit losses on loans in lieu of an allocation of a specific allowance amount when such an amount has been identified definitively as uncollectible.
Bank-Owned Life Insurance	Bank-Owned Life Insurance Bank-owned life insurance policies are reflected on the Consolidated Balance Sheets at the amount that can be realized under the insurance contract at the balance sheet date which is the cash surrender value. Changes in the net cash surrender value of the policies, as well as insurance proceeds received, are reflected in non-interest income on the Consolidated Statements of Income and are not subject to income taxes.
Foreclosed and Repossessed Assets	Foreclosed and Repossessed Assets Other real estate owned is comprised of real estate acquired through foreclosure proceedings or acceptance of a deed in lieu of foreclosure. Repossessed collateral is primarily comprised of taxi medallions. Both other real estate owned and repossessed collateral are held for sale and are initially recorded at the fair value less estimated costs to sell at the date of foreclosure or repossession, establishing a new cost basis. The shortfall, if any, of the loan balance over the fair value of the property or collateral (excluding taxi medallions), less cost to sell, at the time of transfer from loans to other real estate owned or repossessed collateral is charged to the allowance for credit losses on loans. Subsequent to transfer, the asset is carried at lower of cost or fair value less cost to sell and periodically evaluated for impairment. The shortfall, if any, of the loan balance over the fair value of the collateral comprised of taxi medallions at the time of transfer from loans to repossessed collateral is charged to non-interest income. Subsequent impairments in the fair value of other real estate owned and repossessed collateral are charged to expense in the period incurred. Net operating income or expense related to other real estate owned and repossessed collateral is included in operating expenses in the accompanying Consolidated Statements of Income. Because of changing market conditions, there are inherent uncertainties in the assumptions with respect to the estimated fair value of other real estate owned and repossessed collateral. Because of these inherent uncertainties, the amount ultimately realized on other real estate owned and repossessed collateral may differ from the amounts reflected in the financial statements.
Capitalized Servicing Rights	Capitalized Servicing Rights Capitalized servicing rights are included in “other assets” in the Consolidated Balance Sheets. Servicing assets are initially recognized as separate assets at fair value when rights are acquired through purchase or through sale of financial assets with servicing retained. The Company's servicing rights accounted for under the fair value method are carried on the Consolidated Balance Sheets at fair value with changes in fair value recorded in income in the period in which the change occurs. Changes in the fair value of servicing rights are primarily due to changes in valuation assumptions, such as discount rates and prepayment speeds, and the collection and realization of expected cash flows. The Company’s servicing rights accounted for under the amortization method are initially recorded at fair value. Under that method, capitalized servicing rights are charged to expense in proportion to and over the period of estimated net servicing income. Fair value of the servicing rights is based on a valuation model that calculates the present value of estimated future net servicing income. The valuation model incorporates assumptions that market participants would use in estimating future net servicing income, such as the cost to service, the discount rate, prepayment speeds and default rates and losses. Impairment is recognized through a valuation allowance for an individual tranche, to the extent that fair value is less than the capitalized amount for the tranches. If the Company later determines that all or a portion of the impairment no longer exists for a particular tranche, a reduction of the allowance may be recorded as an increase to income.
Premises and Equipment	Premises and Equipment Land is carried at cost. Buildings, improvements, and equipment are carried at cost less accumulated depreciation and amortization computed on the straight-line method over the estimated useful lives of the assets. Leasehold improvements are amortized on the straight-line method over the shorter of the lease term, plus optional terms if certain conditions are met, or the estimated useful life of the asset.
Other Intangibles	Other Intangibles Intangible assets are acquired assets that lack physical substance but can be distinguished from goodwill because of contractual or other legal rights or the asset is capable of being sold or exchanged either on its own or in combination with a related contract, asset or liability. The fair values of these assets are generally determined based on appraisals and are subsequently amortized on a straight-line basis or an accelerated basis over their estimated lives. Management assesses the recoverability of these intangible assets at least annually or whenever events or changes in circumstances indicate that their carrying value may not be recoverable. If the carrying amount exceeds fair value, an impairment charge is recorded to income.
Transfers of Financial Assets	Transfers of Financial Assets Transfers of an entire financial asset, group of entire financial assets, or a participating interest in an entire financial asset are accounted for as sales when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right to pledge or exchange the transferred assets, and (3) the Company does not maintain effective control over the transferred assets.
Income Taxes	Income Taxes Deferred income taxes are recognized for the tax consequences of temporary differences by applying enacted statutory tax rates applicable for future years to differences between financial statement and tax bases of existing assets and liabilities. The effect of tax rate changes on deferred taxes is recognized in the income tax provision in the period that includes the enactment date. A tax valuation allowance is established, as needed, to reduce net deferred tax assets to the amount expected to be realized. In the event it becomes more likely than not that some or all of the deferred tax asset allowances will not be needed, the valuation allowance will be adjusted. In the ordinary course of business there is inherent uncertainty in quantifying the Company’s income tax positions. Income tax positions and recorded tax benefits are based upon management’s evaluation of the facts, circumstances, and information available at the reporting date. For those tax positions where it is more likely than not that a tax benefit will be sustained, we have determined the amount of the tax benefit to be recognized by estimating the largest amount of tax benefit that has a greater than 50% likelihood of being realized upon ultimate settlement with a taxing authority that has full knowledge of all relevant information. For those income tax positions where it is more-likely-than-not that a tax benefit will not be sustained, no tax benefit has been recognized in the financial statements. Where applicable, associated interest and penalties have also been recognized. We recognize accrued interest and penalties related to unrecognized tax benefits as a component of income tax expense.
Stock-Based Compensation	Stock-Based Compensation The Company measures and recognizes compensation cost relating to share-based payment transactions based on the grant-date fair value of the equity instruments issued. The fair value of restricted stock is recorded as unearned compensation. The deferred expense is amortized to compensation expense based on one of several permitted attribution methods over the longer of the required service period or performance period. For performance-based restricted stock awards, the Company estimates the degree to which performance conditions will be met to determine the number of shares that will vest and the related compensation expense. Compensation expense is adjusted in the period such estimates change. Income tax benefits and/or tax deficiencies related to stock compensation determined as the difference between compensation cost recognized for financial reporting purposes and the deduction for tax, are recognized in the income statement as income tax expense or benefit in the period in which they occur.
Wealth Management	Wealth Management Wealth management assets held in a fiduciary or agent capacity are not included in the accompanying Consolidated Balance Sheets because they are not assets of the Company. Wealth management fees is primarily comprised of fees earned from consultative investment management, trust administration, tax return preparation, and financial planning. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based on the daily accrual of the market value of the investment accounts and the applicable fee rate.
Derivative Instruments and Hedging Activities	Derivative Instruments and Hedging Activities The Company enters into interest rate swap agreements as part of the Company’s interest rate risk management strategy for certain assets and liabilities and not for speculative purposes. Based on the Company’s intended use for the interest rate swap at inception, the Company designates the derivative as either an economic hedge of an asset or liability or a hedging instrument subject to the hedge accounting provisions of ASC 815, “Derivatives and Hedging.” Interest rate swaps designated as economic hedges are recorded at fair value within other assets or liabilities. Changes in the fair value of these derivatives are recorded directly through earnings. For interest rate swaps that management intends to apply the hedge accounting provisions of ASC 815, the Company formally documents at inception all relationships between hedging instruments and hedged items, as well as its risk management objectives and strategies for undertaking the various hedges. Additionally, the Company uses dollar offset or regression analysis at the hedge’s inception and for each reporting period thereafter, to assess whether the derivative used in its hedging transaction is expected to be and has been highly effective in offsetting changes in the fair value or cash flows of the hedged item. The Company discontinues hedge accounting when it is determined that a derivative is not expected to be or has ceased to be highly effective as a hedge, and then reflects changes in fair value of the derivative in earnings after termination of the hedge relationship. The Company enters into commitments to lend with borrowers, and forward commitments to sell loans or to-be-announced mortgage-backed bonds to investors to hedge against the inherent interest rate and pricing risk associated with selling loans. The commitments to lend generally terminate once the loan is funded, the lock period expires or the borrower decides not to contract for the loan. The forward commitments generally terminate once the loan is sold, the commitment period expires or the borrower decides not to contract for the loan. These commitments are considered derivatives which are accounted for by recognizing their estimated fair value on the Consolidated Balance Sheets as either a freestanding asset or liability. See Note 14 - Derivative Instruments and Hedging Activities to the financial statements for more information on commitments to lend and forward commitments.
Off-Balance Sheet Financial Instruments	Off-Balance Sheet Financial Instruments In the ordinary course of business, the Company enters into off-balance sheet financial instruments, consisting primarily of credit related financial instruments. These financial instruments are recorded in the financial statements when they are funded or related fees are incurred or received.
Fair Value Hierarchy	Fair Value Hierarchy The Company groups assets and liabilities that are measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. Level 1 - Valuation is based on quoted prices in active markets for identical assets or liabilities. Valuations are obtained from readily available pricing sources for market transactions involving identical assets or liabilities. Level 2 - Valuation is based on observable inputs other than Level 1 prices, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities. Level 3 - Valuation is based on unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using unobservable techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation.
Employee Benefits	Employee Benefits The Company maintains an employer sponsored 401(k) plan to which participants may make contributions in the form of salary deferrals and the Company provides matching contributions in accordance with the terms of the plan. Contributions due under the terms of the defined contribution plans are accrued as earned by employees. Due to the Rome Bancorp acquisition in 2011, the Company inherited a noncontributory, qualified, defined benefit pension plan for certain employees who met age and service requirements; as well as other post-retirement benefits, principally health care and group life insurance. The Rome pension plan and postretirement benefits that were acquired in connection with the whole-bank acquisition were frozen prior to the close of the transaction. The pension benefit in the form of a life annuity is based on the employee’s combined years of service, age, and compensation. The Company also has a long-term care post-retirement benefit plan for certain executives where upon disability, associated benefits are funded by insurance policies or paid directly by the Company. In order to measure the expense associated with the Plans, various assumptions are made including the discount rate, expected return on plan assets, anticipated mortality rates, and expected future healthcare costs. The assumptions are based on historical experience as well as current facts and circumstances. The Company uses a December 31 measurement date for its plans. As of the measurement date, plan assets are determined based on fair value, generally representing observable market prices. The projected benefit obligation is primarily determined based on the present value of projected benefit distributions at an assumed discount rate. Net periodic pension benefit costs include interest costs based on an assumed discount rate, the expected return on plan assets based on actuarially derived market-related values, and the amortization of net actuarial losses. Net periodic postretirement benefit costs include service costs, interest costs based on an assumed discount rate, and the amortization of prior service credits and net actuarial gains. Differences between expected and actual results in each year are included in the net actuarial gain or loss amount, which is recognized in other comprehensive income. The net actuarial gain or loss in excess of a 10% corridor is amortized in net periodic benefit cost over the average remaining service period of active participants in the Plans. The prior service credit is amortized over the average remaining service period to full eligibility for participating employees expected to receive benefits. The Company recognizes in its consolidated balance sheets an asset for a plan’s overfunded status or a liability for a plan’s underfunded status. The Company also measures the Plans’ assets and obligations that determine its funded status as of the end of the fiscal year and recognizes those changes in other comprehensive income/(loss), net of tax. Due to the SI Financial acquisition in 2019, the Company inherited a tax-qualified defined benefit pension plan. The plan was frozen effective September 6, 2013. The plan is a single plan under the Internal Revenue Code and, as a result, all of the assets stand behind all of liabilities. Accordingly, contributions made by a participating employer may be used to provide benefits to participants of other participating employers.
Operating Segments	Operating Segments The Company's reportable segment is determined by the Chief Executive Officer, who is designated the chief operating decision maker ("CODM"), based upon information provided about the Company's products and services offered, primarily banking operations. Consolidated net income of the company is the primary performance metric utilized by the CODM. The segment is also distinguished by the level of information provided to the CODM, who uses such information to review performance of various components of the business, which are then aggregated if operating performance, products/services, and customers are similar. The CODM will evaluate the financial performance of the Company's business components such as by evaluating revenue streams, significant expenses, and budget to actual results in assessing the Company's segment and in the determination of allocating resources. The CODM uses revenue streams to evaluate product pricing and significant expenses to assess performance and evaluate return on assets. The CODM uses consolidated net income to benchmark the Company against its competitors. The benchmarking analysis coupled with monitoring of budget to actual results are used in assessment performance and in establishing compensation. Loans, investments, and deposits provide the revenues in the banking operation. Interest expense, provisions for credit losses, and payroll provide the significant expenses in the banking operation. No other expenses meet the threshold of significant. While the Company has assigned certain management responsibilities by business lines, the Company’s CODM monitors and evaluates financial performance on a Company-wide basis. The majority of the Company’s revenue is from the business of banking. Accordingly, all of the Company’s operations are considered by management to be aggregated in one reportable operating segment. All operations are domestic.
Recently Adopted Accounting Principles and Future Application of Accounting Pronouncements	Recently Adopted Accounting Principles Effective January 1, 2024, the Company adopted the provisions of Financial Accounting Standards Board (FASB) Accounting Standards Update (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)" (ASU 2023-02). ASU 2023-02 expanded the permitted use of the proportional amortization method (PAM), which was previously only available to low-income housing tax credit investments, to other tax equity investments if certain conditions are met. Under PAM, the initial cost of an investment is amortized in proportion to the income tax benefits received and both the amortization of the investment and the income tax benefits received are recognized as a component of income tax expense. Under this ASU, an entity has the option to apply PAM to applicable investments on a tax-credit-program-by-tax-credit-program basis. The Company has elected PAM for its public welfare investments which consist of Affordable Housing and New Market tax credit investments. In addition, the amendments in this ASU require that all tax equity investments accounted for using PAM use the delayed equity contribution guidance in paragraph ASC 323-740-25-3, requiring a liability be recognized for delayed equity contributions that are unconditional and legally binding or for equity contributions that are contingent upon a future event when that contingent event becomes probable. The amendments in this ASU also require additional disclosures in interim and annual periods concerning investments for which PAM is applied, including (i) the nature of tax equity investments, and (ii) the effect of tax equity investments and related income tax credits and other income tax benefits on the financial position and results of operations. The provisions of this ASU became effective for the Company for interim and annual periods beginning January 1, 2024. Refer to Note 24 – Tax Equity Investments for additional information. The adoption of this ASU did not have a material impact on the Company's Consolidated Financial Statements. Future Application of Accounting Pronouncements In December 2023, the FASB issued ASU No. 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures.” The ASU requires disclosure in the rate reconciliation table of additional categories of information and more details about the reconciling items in some categories if items meet a quantitative threshold. The ASU also requires all entities to disclose income taxes paid, net of refunds, disaggregated by federal, state and foreign taxes for annual periods and to disaggregate the information by jurisdiction based on a quantitative threshold, among other things. The amendments in this ASU are effective for annual periods beginning after December 15, 2024. 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.
Investment Program, Proportional Amortization Method	The Company typically accounts for tax equity investments using the proportional amortization method, if certain criteria are met. The election to account for tax equity investments using the proportional amortization method is done so on a tax credit program-by-tax credit program basis. Under the proportional amortization method, the Company amortizes the initial cost of the investment, which is inclusive of any delayed equity contributions, that are unconditional and legally binding or for equity contributions that are contingent on a future event, when that event becomes probable, in proportion to the income tax credits and other income tax benefits that are allocated to the Company over the period of the investment.
Insurance Commissions	REVENUE Revenue from contracts with customers in the scope of Topic 606 is recognized within noninterest income. The Company does not have any material significant payment terms as payment is received at or shortly after the satisfaction of the performance obligation. The value of unsatisfied performance obligations for contracts with an original expected length of one year or less are not disclosed. The Company recognizes incremental costs of obtaining contracts as an expense when incurred for contracts with a term of one year or less. Topic 606 does not apply to revenue associated with financial instruments, including revenue from loans and securities. In addition, certain non-interest income streams such as fees associated with mortgage servicing rights, financial guarantees, derivatives, and certain credit card fees are also not in scope of Topic 606. Topic 606 is applicable to non-interest revenue streams such as wealth management fees, administrative services for customer deposit accounts, interchange fees, and sale of owned real estate properties. The following presents non-interest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the years ended 2024, 2023, and 2022, respectively. Years Ended December 31, (In thousands) 2024 2023 2022 Non-interest income In-scope of Topic 606: Service charges on deposit accounts $ 24,084 $ 24,160 $ 22,396 Wealth management fees 10,840 10,197 10,008 Interchange income 8,298 8,395 8,470 Non-interest income (in-scope of Topic 606) $ 43,222 $ 42,752 $ 40,874 Non-interest income (out-of-scope of Topic 606) 5,192 30 28,063 Total non-interest income $ 48,414 $ 42,782 $ 68,937 Non-interest income streams in-scope of Topic 606 are discussed below. Service Charges on Deposit Accounts. Service charges on deposit accounts consist of monthly service fees (i.e. business analysis fees and consumer service charges) and other deposit account related fees. The Company's performance obligation for monthly service fees is generally satisfied, and the related revenue recognized, over the period in which the service is provided. Other deposit account related fees are largely transactional based, and therefore, the Company's performance obligation is satisfied, and related revenue recognized, at a point in time. Payment for service charges on deposit accounts is primarily received immediately or in the following month through a direct charge to customers’ accounts. The Company may, from time to time, waive certain fees (e.g., NSF fee) for customers but generally do not reduce the transaction price to reflect variability for future reversals due to the insignificance of the amounts. Waiver of fees reduces the revenue in the period the waiver is granted to the customer. Wealth Management Fees. Wealth management fees are primarily comprised of fees earned from consultative investment management, trust administration, tax return preparation, and financial planning. The Company’s performance obligation is generally satisfied over time and the resulting fees are recognized monthly, based on the daily accrual of the market value of the investment accounts and the applicable fee rate. Interchange Fees. Interchange fees are transaction fees paid to the card-issuing bank to cover handling costs, fraud and bad debt costs, and the risk involved in approving the payment. Due to the day-to-day nature of these fees they are settled on a daily basis and are accounted for as they are received. Gains/Losses on Sales of OREO. The sale of OREO and other nonfinancial assets are accounted for with the derecognition of the asset in question once a contract exists and control of the asset has been transferred to the buyer. The gain or loss on the sale is calculated as the difference between the carrying value of the asset and the transaction price.

SECURITIES (Tables)

SECURITIES (Tables)	12 Months Ended
	Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract]
Schedule of Securities Available for Sale (AFS) and Securities	The following is a summary of securities available for sale (“AFS”) , held to maturity (“HTM”), and equity securities: (In thousands) Amortized Gross Gross Fair Value Allowance December 31, 2024 Securities available for sale Debt securities: U.S Treasuries $ 6,986 $ 3 $ — $ 6,989 $ — Municipal bonds and obligations 63,952 10 (3,098) 60,864 — Agency collateralized mortgage obligations 328,569 146 (64,153) 264,562 — Agency mortgage-backed securities 273,969 4 (53,733) 220,240 — Agency commercial mortgage-backed securities 85,686 — (18,975) 66,711 — Corporate bonds 38,689 30 (2,362) 36,357 — Total securities available for sale 797,851 193 (142,321) 655,723 — Securities held to maturity Municipal bonds and obligations 235,883 129 (22,619) 213,393 44 Agency collateralized mortgage obligations 101,163 — (17,884) 83,279 — Agency mortgage-backed securities 43,644 — (8,707) 34,937 — Agency commercial mortgage-backed securities 125,547 — (25,153) 100,394 — Tax advantaged economic development bonds 1,144 — (42) 1,102 20 Other bonds and obligations 277 — — 277 — Total securities held to maturity 507,658 129 (74,405) 433,382 64 Equity securities 655 67 (67) 655 — Total $ 1,306,164 $ 389 $ (216,793) $ 1,089,760 $ 64 December 31, 2023 Securities available for sale Debt securities: U.S Treasuries $ 7,980 $ 1 $ — $ 7,981 $ — Municipal bonds and obligations 64,788 494 (1,429) 63,853 — Agency collateralized mortgage obligations 426,986 — (79,112) 347,874 — Agency mortgage-backed securities 492,633 2 (75,155) 417,480 — Agency commercial mortgage-backed securities 174,879 — (29,553) 145,326 — Corporate bonds 43,291 34 (4,210) 39,115 — Other bonds and obligations 655 67 (66) 656 — Total securities available for sale 1,211,212 598 (189,525) 1,022,285 — Securities held to maturity Municipal bonds and obligations 251,046 698 (16,987) 234,757 48 Agency collateralized mortgage-backed securities 112,929 — (18,360) 94,569 — Agency mortgage-backed securities 47,379 — (8,052) 39,327 — Agency commercial mortgage-backed securities 130,169 — (24,368) 105,801 — Tax advantaged economic development bonds 1,540 6 (60) 1,486 20 Other bonds and obligations 288 — — 288 — Total securities held to maturity 543,351 704 (67,827) 476,228 68 Equity securities 15,035 — (2,006) 13,029 — Total $ 1,769,598 $ 1,302 $ (259,358) $ 1,511,542 $ 68
Schedule of Debt Securities, Held to Maturity, Activity	The following table summarizes the activity in the allowance for credit losses for debt securities held to maturity by security type for the years ended December 31, 2024, 2023 and 2022: (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2023 $ 48 $ 20 $ 68 Provision (benefit) for credit losses (4) — (4) Balance at December 31, 2024 $ 44 $ 20 $ 64 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2022 $ 66 $ 25 $ 91 Provision (benefit) for credit losses (18) (5) (23) Balance at December 31, 2023 $ 48 $ 20 $ 68 (In thousands) Municipal bonds and obligations Tax advantaged economic development bonds Total Balance at December 31, 2021 $ 70 $ 35 $ 105 Provision expense/(benefit) for credit losses (4) (10) (14) Balance at December 31, 2022 $ 66 $ 25 $ 91
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 AFS and HTM securities, segregated by contractual maturity at year-end 2024 are presented below. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Mortgage-backed securities and collateralized mortgage obligations are shown in total, as their maturities are highly variable. Available for sale Held to maturity (In thousands) Amortized Fair Amortized Fair Within 1 year $ 7,640 $ 7,640 $ 346 $ 346 Over 1 year to 5 years 21,117 20,782 2,980 2,930 Over 5 years to 10 years 47,244 44,631 54,191 53,032 Over 10 years 33,626 31,157 179,787 158,464 Total bonds and obligations 109,627 104,210 237,304 214,772 Mortgage-backed securities 688,224 551,513 270,354 218,610 Total $ 797,851 $ 655,723 $ 507,658 $ 433,382
Schedule of Amortized Cost and Fair Values of Pledged Securities	The total amortized cost and fair values of these pledged securities follows. Additionally, there is a blanket lien on certain securities to collateralize borrowings from the FHLBB and Federal Reserve Bank of Boston, as discussed further in Note 10 - Borrowed Funds. 2024 2023 (In thousands) Amortized Fair Amortized Fair Securities pledged to swap counterparties $ 9,574 $ 9,078 $ 9,780 $ 9,633 Securities pledged for municipal deposits 286,183 218,665 289,740 250,979 Total $ 295,757 $ 227,743 $ 299,520 $ 260,612
Schedule of Components of Net Realized Gains and Losses on the Sale of AFS Securities	The components of net recognized gains and losses on the sale of AFS securities and the fair value change of equities are as follows: (In thousands) 2024 2023 2022 Gross recognized gains $ 21,488 $ 1,199 $ 72 Gross recognized losses (71,566) (26,083) (2,009) Net recognized (losses) $ (50,078) $ (24,884) $ (1,937)
Schedule of Securities with Unrealized Losses, Segregated by the Duration of their Continuous Unrealized Loss Positions	Debt securities 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 (In thousands) Gross Fair Gross Fair Gross Fair December 31, 2024 Securities available for sale Debt securities: Municipal bonds and obligations $ 773 $ 30,299 $ 2,325 $ 25,916 $ 3,098 $ 56,215 Agency collateralized mortgage obligations 403 45,954 63,750 200,038 64,153 245,992 Agency mortgage-backed securities 113 3,706 53,620 215,822 53,733 219,528 Agency commercial mortgage-back securities — — 18,975 66,711 18,975 66,711 Corporate bonds — — 2,362 32,538 2,362 32,538 Total securities available for sale $ 1,289 $ 79,959 $ 141,032 $ 541,025 $ 142,321 $ 620,984 Securities held to maturity Municipal bonds and obligations 1,614 73,453 21,005 111,228 22,619 184,681 Agency collateralized mortgage obligations — — 17,884 83,279 17,884 83,279 Agency mortgage-backed securities — — 8,707 34,937 8,707 34,937 Agency commercial mortgage-back securities — — 25,153 100,394 25,153 100,394 Tax advantaged economic development bonds — — 42 1,102 42 1,102 Total securities held to maturity 1,614 73,453 72,791 330,940 74,405 404,393 Total $ 2,903 $ 153,412 $ 213,823 $ 871,965 $ 216,726 $ 1,025,377 December 31, 2023 Securities available for sale Debt securities: Municipal bonds and obligations $ 76 $ 9,326 $ 1,353 $ 22,739 $ 1,429 $ 32,065 Agency collateralized mortgage obligations — — 79,112 347,874 79,112 347,874 Agency mortgage-backed securities 1 22 75,154 417,151 75,155 417,173 Agency commercial mortgage-backed securities — — 29,553 145,326 29,553 145,326 Corporate bonds 457 6,543 3,753 31,690 4,210 38,233 Other bonds and obligations — — 66 295 66 295 Total securities available for sale $ 534 $ 15,891 $ 188,991 $ 965,075 $ 189,525 $ 980,966 Securities held to maturity Municipal bonds and obligations 229 28,895 16,758 92,063 16,987 120,958 Agency collateralized mortgage obligations 1 21 18,359 94,548 18,360 94,569 Agency mortgage-backed securities — — 8,052 39,327 8,052 39,327 Agency commercial mortgage-back securities — — 24,368 105,801 24,368 105,801 Tax advantaged economic development bonds — — 60 922 60 922 Total securities held to maturity 230 28,916 67,597 332,661 67,827 361,577 Total $ 764 $ 44,807 $ 256,588 $ 1,297,736 $ 257,352 $ 1,342,543

LOANS AND RELATED ALLOWANCE F_2

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES (Tables)	12 Months Ended
	Dec. 31, 2024
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) December 31, 2024 December 31, 2023 Construction $ 726,344 $ 640,371 Commercial multifamily 636,805 599,145 Commercial real estate owner occupied 695,330 628,646 Commercial real estate non-owner occupied 2,769,447 2,606,409 Commercial and industrial 1,439,175 1,359,249 Residential real estate 2,771,769 2,760,312 Home equity 230,365 224,223 Consumer other 115,759 221,331 Total loans $ 9,384,994 $ 9,039,686 Allowance for credit losses 114,700 105,357 Net loans $ 9,270,294 $ 8,934,329
Schedule of Allowance for Credit Losses for Loans, Activity	The Company’s activity in the allowance for credit losses on loans for the years ended December 31, 2024, December 31, 2023 and December 31, 2022 was as follows: (In thousands) Balance at Beginning of Period Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Year ended December 31, 2024 Construction $ 2,885 $ — $ — $ 1,578 $ 4,463 Commercial multifamily 2,475 (1,164) — 2,773 4,084 Commercial real estate owner occupied 9,443 (403) 231 2,032 11,303 Commercial real estate non-owner occupied 38,221 (36) 249 86 38,520 Commercial and industrial 18,602 (7,820) 1,984 12,783 25,549 Residential real estate 19,622 (76) 1,425 1,508 22,479 Home equity 2,015 — 250 127 2,392 Consumer other 12,094 (11,026) 1,726 3,116 5,910 Total allowance for credit losses $ 105,357 $ (20,525) $ 5,865 $ 24,003 $ 114,700 (In thousands) Balance at Beginning of Period Adoption of Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Year ended December 31, 2023 Construction $ 1,227 $ — $ (1) $ — $ 1,659 $ 2,885 Commercial multifamily 1,810 — — 6 659 2,475 Commercial real estate owner occupied 10,739 24 (489) 1,139 (1,970) 9,443 Commercial real estate non-owner occupied 30,724 — (65) 204 7,358 38,221 Commercial and industrial 18,743 (23) (17,872) 2,659 15,095 18,602 Residential real estate 18,666 2 (313) 610 657 19,622 Home equity 2,173 — (88) 519 (589) 2,015 Consumer other 12,188 (404) (10,429) 1,586 9,153 12,094 Total allowance for credit losses $ 96,270 $ (401) $ (29,257) $ 6,723 $ 32,022 $ 105,357 (In thousands) Balance at Beginning of Period Charge-offs Recoveries Provision for Credit Losses Balance at End of Period Year ended December 31, 2022 Construction $ 3,206 $ — $ — $ (1,979) $ 1,227 Commercial multifamily 6,120 (94) 112 (4,328) 1,810 Commercial real estate owner occupied 12,752 (687) 702 (2,028) 10,739 Commercial real estate non-owner occupied 32,106 (5,894) 1,549 2,963 30,724 Commercial and industrial 22,584 (18,447) 3,050 11,556 18,743 Residential real estate 22,406 (555) 1,019 (4,204) 18,666 Home equity 4,006 (166) 283 (1,950) 2,173 Consumer other 2,914 (2,215) 505 10,984 12,188 Total allowance for credit losses $ 106,094 $ (28,058) $ 7,220 $ 11,014 $ 96,270
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 years ended December 31, 2024, December 31, 2023, and December 31, 2022 was as follows: (In thousands) Total Balance at December 31, 2023 $ 9,256 Expense for credit losses 565 Balance at December 31, 2024 $ 9,821 (In thousands) Total Balance at December 31, 2022 $ 8,588 Expense for credit losses 668 Balance at December 31, 2023 $ 9,256 (In thousands) Total Balance at December 31, 2021 $ 7,043 Release of expense for credit losses 1,545 Balance at December 31, 2022 $ 8,588
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) 2024 2023 2022 2021 2020 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of December 31, 2024 Construction Current period gross write-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Risk rating Pass $ 40,549 $ 138,925 $ 436,850 $ 74,718 $ — $ 1,336 $ — $ 692,378 Special Mention — — 15,374 — — — — — 15,374 Substandard — — — 18,592 — — — — 18,592 Total $ 40,549 $ 138,925 $ 452,224 $ 93,310 $ — $ 1,336 $ — $ — $ 726,344 Commercial multifamily: Current period gross write-offs $ — $ — $ — $ — $ — $ 1,164 $ — $ — $ 1,164 Risk rating Pass $ 85,160 $ 17,598 $ 203,001 $ 52,235 $ 38,211 $ 233,145 $ 428 $ — $ 629,778 Special Mention — — — — — 421 — — 421 Substandard — — — — 2,477 4,129 — — 6,606 Total $ 85,160 $ 17,598 $ 203,001 $ 52,235 $ 40,688 $ 237,695 $ 428 $ — $ 636,805 Commercial real estate owner occupied: Current period gross write-offs $ — $ — $ 45 $ 232 $ — $ 126 $ — $ — $ 403 Risk rating Pass $ 122,082 $ 83,269 $ 112,718 $ 94,937 $ 67,652 $ 177,684 $ 2,947 $ — $ 661,289 Special Mention 1,852 9,637 1,839 7,215 221 5,207 — — 25,971 Substandard — — 411 595 37 7,027 — — 8,070 Total $ 123,934 $ 92,906 $ 114,968 $ 102,747 $ 67,910 $ 189,918 $ 2,947 $ — $ 695,330 Commercial real estate non-owner occupied: Current period gross write-offs $ — $ — $ — $ — $ — $ 36 $ — $ — $ 36 Risk rating Pass $ 246,619 $ 426,882 $ 591,563 $ 413,459 $ 142,739 $ 874,454 $ 5,961 $ 1,500 $ 2,703,177 Special Mention — — — 1,038 223 40,763 — — 42,024 Substandard — — 368 2,782 — 18,840 2,256 — 24,246 Total $ 246,619 $ 426,882 $ 591,931 $ 417,279 $ 142,962 $ 934,057 $ 8,217 $ 1,500 $ 2,769,447 Commercial and industrial: Current period gross write-offs $ 324 $ 868 $ 1,564 $ 940 $ 816 $ 1,745 $ 1,563 $ — $ 7,820 Risk rating Pass $ 205,831 $ 91,152 $ 126,327 $ 93,441 $ 18,613 $ 112,620 $ 689,036 $ 11,478 $ 1,348,498 Special Mention 164 1,122 22,091 1,305 1,705 2,957 16,723 100 46,167 Substandard — 2,422 1,740 10,825 929 12,075 16,314 205 44,510 Total $ 205,995 $ 94,696 $ 150,158 $ 105,571 $ 21,247 $ 127,652 $ 722,073 $ 11,783 $ 1,439,175 Term Loans Amortized Cost Basis by Origination Year (In thousands) 2024 2023 2022 2021 2020 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total Residential real estate Current period gross write-offs $ — $ — $ — $ — $ — $ 76 $ — $ — $ 76 Risk rating Pass $ 291,826 $ 531,873 $ 908,916 $ 247,551 $ 77,706 $ 703,572 $ 136 $ — $ 2,761,580 Special Mention — — 649 468 — 1,501 — — 2,618 Substandard — — 124 188 374 6,885 — — 7,571 Total $ 291,826 $ 531,873 $ 909,689 $ 248,207 $ 78,080 $ 711,958 $ 136 $ — $ 2,771,769 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 December 31, 2023 Construction Current period gross write-offs $ — $ — $ — $ — $ — $ 1 $ — $ — $ 1 Risk rating Pass $ 104,507 $ 346,419 $ 138,802 $ 29,176 $ 2,545 $ 1,098 $ — $ — $ 622,547 Special Mention — — 512 — — — — — 512 Substandard — — 17,312 — — — — — 17,312 Total $ 104,507 $ 346,419 $ 156,626 $ 29,176 $ 2,545 $ 1,098 $ — $ — $ 640,371 Commercial multifamily: Current period gross write-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Risk rating Pass $ 16,020 $ 216,477 $ 56,817 $ 26,566 $ 94,733 $ 179,923 $ 377 $ — $ 590,913 Special Mention — — — — — — — — — Substandard — — 242 2,554 — 5,436 — — 8,232 Total $ 16,020 $ 216,477 $ 57,059 $ 29,120 $ 94,733 $ 185,359 $ 377 $ — $ 599,145 Commercial real estate owner occupied: Current period gross write-offs $ — $ — $ — $ 380 $ — $ 109 $ — $ — $ 489 Risk rating Pass $ 97,271 $ 120,327 $ 122,151 $ 37,914 $ 70,393 $ 165,224 $ 2,653 $ — $ 615,933 Special Mention — — 424 222 — 788 — — 1,434 Substandard — — 81 47 4,703 6,448 — — 11,279 Total $ 97,271 $ 120,327 $ 122,656 $ 38,183 $ 75,096 $ 172,460 $ 2,653 $ — $ 628,646 Commercial real estate non-owner occupied: Current period gross write-offs $ — $ — $ — $ — $ — $ 65 $ — $ — $ 65 Risk rating Pass $ 404,687 $ 591,897 $ 385,247 $ 135,134 $ 277,870 $ 736,566 $ 4,553 $ — $ 2,535,954 Special Mention — — — 229 19,465 726 — — 20,420 Substandard — — — 6,814 13,483 29,738 — — 50,035 Total $ 404,687 $ 591,897 $ 385,247 $ 142,177 $ 310,818 $ 767,030 $ 4,553 $ — $ 2,606,409 Commercial and industrial: Current period gross write-offs $ — $ 1,154 $ 863 $ 2,763 $ 1,496 $ 9,283 $ 2,313 $ — $ 17,872 Risk rating Pass $ 142,946 $ 203,126 $ 118,191 $ 69,722 $ 39,437 $ 112,770 $ 554,153 $ — $ 1,240,345 Special Mention 526 23,149 3,735 1,621 610 1,353 35,244 — 66,238 Substandard 432 761 11,702 1,135 3,785 12,538 22,313 — 52,666 Total $ 143,904 $ 227,036 $ 133,628 $ 72,478 $ 43,832 $ 126,661 $ 611,710 $ — $ 1,359,249 Residential real estate Current period gross write-offs $ — $ 50 $ — $ 50 $ 174 $ 39 $ — $ — $ 313 Risk rating Pass $ 599,124 $ 973,031 $ 266,055 $ 88,302 $ 66,837 $ 755,372 $ 81 $ — $ 2,748,802 Special Mention — — — — 140 664 — — 804 Substandard — 129 1,176 379 574 8,448 — — 10,706 Total $ 599,124 $ 973,160 $ 267,231 $ 88,681 $ 67,551 $ 764,484 $ 81 $ — $ 2,760,312 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) 2024 2023 2022 2021 2020 Prior Revolving Loans Amortized Cost Basis Revolving Loans Converted to Term Total As of December 31, 2024 Home equity: Current period gross write-offs $ — $ — $ — $ — $ — $ — $ — $ — $ — Payment performance Performing $ — $ — $ — $ — $ 423 $ 2,529 $ 226,822 $ — $ 229,774 Nonperforming — — — — — — 591 — 591 Total $ — $ — $ — $ — $ 423 $ 2,529 $ 227,413 $ — $ 230,365 Consumer other: Current period gross write-offs $ — $ 214 $ 9,723 $ 760 $ 2 $ 113 $ 214 $ — $ 11,026 Payment performance Performing $ 30,524 $ 33,849 $ 23,397 $ 10,072 $ 3,718 $ 3,825 $ 10,066 $ — $ 115,451 Nonperforming — 1 43 121 — 107 36 — 308 Total $ 30,524 $ 33,850 $ 23,440 $ 10,193 $ 3,718 $ 3,932 $ 10,102 $ — $ 115,759 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 December 31, 2023 Home equity: Current period gross write-offs $ — $ — $ — $ 70 $ — $ — $ 18 $ — $ 88 Payment performance Performing $ — $ — $ — $ 439 $ — $ 2,614 $ 220,209 $ — $ 223,262 Nonperforming — — — — — — 961 — 961 Total $ — $ — $ — $ 439 $ — $ 2,614 $ 221,170 $ — $ 224,223 Consumer other: Current period gross write-offs $ 109 $ 8,843 $ 1,149 $ 11 $ 78 $ 239 $ — $ — $ 10,429 Payment performance Performing $ 49,588 $ 108,284 $ 19,679 $ 5,843 $ 7,054 $ 19,587 $ 10,614 $ — $ 220,649 Nonperforming 77 104 47 26 110 284 34 — 682 Total $ 49,665 $ 108,388 $ 19,726 $ 5,869 $ 7,164 $ 19,871 $ 10,648 $ — $ 221,331 The following table summarizes information about total loans rated Special Mention or lower at December 31, 2024 and December 31, 2023. The table below includes consumer loans that are Special Mention and Substandard accruing that are classified as performing based on payment activity. (In thousands) December 31, 2024 December 31, 2023 Nonaccrual $ 24,447 $ 21,407 Substandard Accruing 88,009 131,689 Total Classified 112,456 153,096 Special Mention 133,408 91,502 Total Criticized $ 245,864 $ 244,598
Schedule of Past Due Loans	The following is a summary of loans by past due status at December 31, 2024 and December 31, 2023: (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, 2024 Construction $ — $ — $ 594 $ 594 $ 725,750 $ 726,344 Commercial multifamily 421 — 4,129 4,550 632,255 636,805 Commercial real estate owner occupied 484 456 2,330 3,270 692,060 695,330 Commercial real estate non-owner occupied 295 — 3,532 3,827 2,765,620 2,769,447 Commercial and industrial 2,613 1,116 9,823 13,552 1,425,623 1,439,175 Residential real estate 8,571 1,969 7,570 18,110 2,753,659 2,771,769 Home equity 629 519 1,491 2,639 227,726 230,365 Consumer other 884 327 1,395 2,606 113,153 115,759 Total $ 13,897 $ 4,387 $ 30,864 $ 49,148 $ 9,335,846 $ 9,384,994 (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, 2023 Construction $ — $ — $ — $ — $ 640,371 $ 640,371 Commercial multifamily 5,436 187 — 5,623 593,522 599,145 Commercial real estate owner occupied 581 286 804 1,671 626,975 628,646 Commercial real estate non-owner occupied 139 251 3,798 4,188 2,602,221 2,606,409 Commercial and industrial 2,749 689 8,769 12,207 1,347,042 1,359,249 Residential real estate 5,669 943 10,687 17,299 2,743,013 2,760,312 Home equity 707 498 1,281 2,486 221,737 224,223 Consumer other 2,363 1,642 1,606 5,611 215,720 221,331 Total $ 17,644 $ 4,496 $ 26,945 $ 49,085 $ 8,990,601 $ 9,039,686
Schedule of Information Pertaining to Non-accrual Loans	The following is a summary of loans on nonaccrual status and loans past due 90 days or more and still accruing as of December 31, 2024 and December 31, 2023: December 31, 2024 (In thousands) Nonaccrual Amortized Cost Nonaccrual With No Related Allowance Past Due 90 Days or Greater and Accruing Interest Income Recognized on Nonaccrual Construction $ 594 $ 594 $ — $ — Commercial multifamily 4,129 4,129 — — Commercial real estate owner occupied 2,330 2,330 — — Commercial real estate non-owner occupied 3,532 3,532 — — Commercial and industrial 8,964 8,614 859 — Residential real estate 3,999 3,999 3,571 — Home equity 591 591 900 — Consumer other 308 308 1,087 — Total $ 24,447 $ 24,097 $ 6,417 $ — December 31, 2023 (In thousands) Nonaccrual Amortized Cost Nonaccrual With No Related Allowance Past Due 90 Days or Greater and Accruing Interest Income Recognized on Nonaccrual Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied 605 285 199 — Commercial real estate non-owner occupied 3,798 45 — — Commercial and industrial 8,665 5,586 104 — Residential real estate 6,696 2,796 3,991 — Home equity 961 122 320 — Consumer other 682 — 924 — Total $ 21,407 $ 8,834 $ 5,538 $ —
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 December 31, 2024 Construction $ 594 $ — $ — Commercial multifamily 4,129 — — Commercial real estate owner occupied 1,562 — — Commercial real estate non-owner occupied 294 — — Commercial and industrial 4,828 — 700 Residential real estate 1,243 — — Home equity 49 — — Consumer other — — — Total loans $ 12,699 $ — $ 700 Type of Collateral (In thousands) Real Estate Investment Securities/Cash Other December 31, 2023 Construction $ — $ — $ — Commercial multifamily — — — Commercial real estate owner occupied 650 — — Commercial real estate non-owner occupied 342 — — Commercial and industrial 4,788 — 944 Residential real estate 5,035 — — Home equity 135 — — Consumer other 40 — — Total loans $ 10,990 $ — $ 944
Schedule of Recorded Investment and Number of Modifications for TDRs Identified During the Period	The following table presents the amortized cost basis of loans at December 31, 2024 and December 31, 2023 that were both experiencing financial difficulty and modified during the year ended December 31, 2024 and December 31, 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 Year ended December 31, 2024 Construction $ — $ — $ — $ — $ — $ — — % Commercial multifamily — — — — — — — Commercial real estate owner occupied — — — — — — — Commercial real estate non-owner occupied — — 12,356 — — 645 0.47 Commercial and industrial — 87 12,236 — — — 0.86 Residential real estate — — — — — — — Home equity — — — — — — — Consumer other — — — — — — — Total $ — $ 87 $ 24,592 $ — $ — $ 645 0.27 % The Company has committed to lend additional amounts totaling $8.8 million to the borrowers included in the previous table. (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 Year ended December 31, 2023 Construction $ — $ — $ — $ — $ — $ — — % Commercial multifamily — — — — — — — Commercial real estate owner occupied — — 222 — — — 0.04 Commercial real estate non-owner occupied — — 11,454 — — 3,600 0.58 Commercial and industrial — 34 16,005 — — 9 1.18 % Residential real estate — — — — — — — Home equity — — — — — — — Consumer other — — — — — — — Total $ — $ 34 $ 27,681 $ — $ — $ 3,609 0.35 % (In thousands) 30 - 59 Days Past Due 60 - 89 Days Past Due Greater Than 89 Days Past Due Total Past Due December 31, 2024 Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied — — — — Commercial real estate non-owner occupied — — — — Commercial and industrial — — — — Residential real estate — — — — Home equity — — — — Consumer other — — — — Total $ — $ — $ — $ — (In thousands) 30 - 59 Days Past Due 60 - 89 Days Past Due Greater Than 89 Days Past Due Total Past Due December 31, 2023 Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied — — — — Commercial real estate non-owner occupied — — — — Commercial and industrial 34 — — 34 Residential real estate — — — — Home equity — — — — Consumer other — — — — Total $ 34 $ — $ — $ 34 The following table presents the financial effect of the loan modifications presented above to borrowers experiencing financial difficulty for the years ended December 31, 2024 and 2023: (In thousands) Principal Forgiveness Weighted Average Interest Rate Reduction Weighted Average Term Extension (months) Years ended December 31, 2024 Construction $ — — % 0 Commercial multifamily — — 0 Commercial real estate owner occupied — — 0 Commercial real estate non-owner occupied — 2.62 26 Commercial and industrial — — 28 Residential real estate — — 0 Home equity — — 0 Consumer other — — 0 (In thousands) Principal Forgiveness Weighted Average Interest Rate Reduction Weighted Average Term Extension (months) Years ended December 31, 2023 Construction $ — — % 0 Commercial multifamily — — 0 Commercial real estate owner occupied — — 120 Commercial real estate non-owner occupied — 0.05 16 Commercial and industrial — 1.25 23 Residential real estate — — 0 Home equity — — 0 Consumer other — — 0 The following table presents the amortized cost basis of loans that had a payment default during the year ended December 31, 2024 and were modified in the twelve months prior to that default to borrowers experiencing financial difficulty. (in thousands) Principal Forgiveness Payment Delay Term Extension Interest Rate Reduction Year ended December 31, 2024 Construction $ — $ — $ — $ — Commercial multifamily — — — — Commercial real estate owner occupied — — — — Commercial real estate non-owner occupied — — — — Commercial and industrial — — 202 — Residential real estate — — — — Home equity — — — — Consumer other — — — — Total $ — $ — $ 202 $ —

PREMISES AND EQUIPMENT (Tables)

PREMISES AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2024
Property, Plant and Equipment [Abstract]
Schedule of Premises and Equipment	Year-end premises and equipment are summarized as follows: (In thousands) 2024 2023 Estimated Useful Land $ 11,828 $ 12,525 N/A Buildings and improvements 72,576 89,222 5 - 39 years Furniture and equipment 60,597 64,290 3 - 7 years Construction in process 3,738 327 Premises and equipment, gross 148,739 166,364 Accumulated depreciation and amortization (92,130) (97,449) Premises and equipment, net $ 56,609 $ 68,915

OTHER INTANGIBLES (Tables)

OTHER INTANGIBLES (Tables)	12 Months Ended
	Dec. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Components of Other Intangible Assets	The components of other intangible assets are as follows: (In thousands) Gross Intangible Accumulated Net Intangible December 31, 2024 Non-maturity deposits (core deposit intangible) $ 77,213 $ (63,093) $ 14,120 All other intangible assets 7,866 (6,922) 944 Total $ 85,079 $ (70,015) $ 15,064 December 31, 2023 Non-maturity deposits (core deposit intangible) $ 77,213 $ (58,965) $ 18,248 All other intangible assets 7,866 (6,450) 1,416 Total $ 85,079 $ (65,415) $ 19,664

OTHER ASSETS (Tables)

OTHER ASSETS (Tables)	12 Months Ended
	Dec. 31, 2024
Other Assets [Abstract]
Schedule of Other Assets	Year-end other assets are summarized as follows: (In thousands) 2024 2023 Capitalized servicing rights $ 11,790 $ 12,095 Accrued interest receivable 49,410 53,096 Accrued federal and state tax receivable 36,610 33,564 Right-of-use assets 50,195 47,348 Derivative assets 47,923 45,668 Deferred tax asset 97,449 110,068 Tax credits investments 35,597 16,644 Other 29,468 23,274 Total other assets $ 358,442 $ 341,757
Schedule of Mortgage Servicing Rights Activity	Servicing rights activity was as follows: (In thousands) 2024 2023 2022 Balance at beginning of year $ 12,095 $ 13,047 $ 16,022 Additions 3,746 2,892 3,119 Amortization (3,895) (4,330) (4,590) Payoffs (1,056) (952) (958) Allowance adjustment 900 1,438 (546) Balance at end of year $ 11,790 $ 12,095 $ 13,047 (1) As of December 31, 2024 and December 31, 2023, the servicing rights included in the total balance accounted for at fair value were $1.2 million and $1.5 million, respectively.

DEPOSITS (Tables)

DEPOSITS (Tables)	12 Months Ended
	Dec. 31, 2024
Deposits [Abstract]
Schedule of Time Deposits	A summary of year-end time deposits is as follows: (In thousands) 2024 2023 Maturity date: Within 1 year $ 2,295,935 $ 2,364,280 Over 1 year to 2 years 252,981 270,630 Over 2 years to 3 years 10,574 26,039 Over 3 years to 4 years 6,800 9,020 Over 4 years to 5 years 3,754 9,864 Over 5 years 6,638 6,417 Total $ 2,576,682 $ 2,686,250 Account balances: Less than $100,000 $ 707,936 $ 724,911 $100,000 through $250,000 1,157,227 1,276,175 $250,000 or more 711,519 685,164 Total $ 2,576,682 $ 2,686,250

BORROWED FUNDS (Tables)

BORROWED FUNDS (Tables)	12 Months Ended
	Dec. 31, 2024
Debt Disclosure [Abstract]
Schedule of Borrowed Funds	Borrowed funds at December 31, 2024 and 2023 are summarized, as follows: 2024 2023 (in thousands, except rates) Principal Weighted Principal Weighted Short-term borrowings: Advances from the FHLBB $ 103,500 5.33 % $ 260,000 5.54 % Total short-term borrowings: 103,500 5.33 260,000 5.54 Long-term borrowings: Advances from the FHLBB 212,982 4.48 125,223 4.80 Subordinated notes 98,532 5.50 98,335 5.50 Junior subordinated borrowing - Trust I 15,464 6.63 15,464 7.49 Junior subordinated borrowing - Trust II 7,616 6.32 7,564 7.35 Total long-term borrowings: 334,594 4.92 246,586 5.33 Total $ 438,094 5.02 % $ 506,586 5.44 %
Schedule of Maturities of FHLBB Advances	A summary of maturities of FHLBB advances at year-end 2024 is as follows: 2024 (In thousands) Amount Weighted Fixed rate advances maturing: 2025 $ 258,500 5.08 % 2026 25,484 3.75 2027 25,147 3.65 2028 779 — 2029 and beyond 6,572 0.68 Total FHLBB advances $ 316,482 4.76 %

OTHER LIABILITIES (Tables)

OTHER LIABILITIES (Tables)	12 Months Ended
	Dec. 31, 2024
Other Liabilities Disclosure [Abstract]
Schedule of Other Liabilities	Year-end other liabilities are summarized as follows: (In thousands) 2024 2023 Derivative liabilities $ 79,039 $ 75,957 Collateral on interest rate swaps 32,500 25,520 Finance lease liabilities 891 8,681 Employee benefits liability 38,772 43,042 Operating lease liabilities 55,986 53,026 Delayed equity contributions 18,743 — Accrued interest payable 9,005 13,766 Customer transaction clearing accounts 7,931 12,366 Allowance for credit losses on unfunded commitments 9,821 9,256 Other 39,998 37,016 Total other liabilities $ 292,686 $ 278,630

EMPLOYEE BENEFIT PLANS (Tables)

EMPLOYEE BENEFIT PLANS (Tables)	12 Months Ended
	Dec. 31, 2024
Retirement Benefits [Abstract]
Schedule of changes in the Projected Benefit Obligation and Plan Assets	Information regarding the pension plan is as follows: December 31, (In thousands) 2024 2023 Change in projected benefit obligation: Projected benefit obligation at beginning of year $ 3,642 $ 3,729 Service Cost 42 59 Interest cost 175 186 Actuarial loss (360) (20) Benefits paid (264) (250) Settlements — (62) Projected benefit obligation at end of year 3,235 3,642 Accumulated benefit obligation 3,235 3,642 Change in fair value of plan assets: Fair value of plan assets at plan beginning of year 4,999 4,683 Actual return on plan assets 521 628 Contributions by employer — — Benefits paid (264) (250) Settlements — (62) Fair value of plan assets at end of year 5,256 4,999 (Overfunded) status $ (2,021) $ (1,357) Information regarding the postretirement plans is as follows: December 31, (In thousands) 2024 2023 Change in accumulated postretirement benefit obligation: Accumulated post-retirement benefit obligation at beginning of year $ 3,306 $ 3,215 Service Cost 8 7 Interest cost 165 166 Participant contributions — — Actuarial loss (289) 58 Benefits paid (108) (140) Accumulated post-retirement benefit obligation at end of year $ 3,082 $ 3,306 Change in plan assets: Fair value of plan assets at beginning of year $ — $ — Contributions by employer 108 140 Contributions by participant — — Benefits paid (108) (140) Fair value of plan assets at end of year $ — $ —
Schedule of Amounts Recognized in Statement of Financial Position	Amounts Recognized on Consolidated Balance Sheets Other assets $ 2,021 $ 1,357 Other liabilities — — Amounts Recognized on Consolidated Balance Sheets Other Liabilities $ 3,082 $ 3,306
Schedule of Net Periodic Cost	Net periodic pension cost is comprised of the following: December 31, (In thousands) 2024 2023 2022 Service Cost $ 42 $ 59 $ 68 Interest Cost 175 186 141 Expected return on plan assets (316) (295) (376) Amortization of unrecognized actuarial loss — 6 11 Net periodic pension (credit) $ (99) $ (44) $ (156) Net periodic post-retirement cost is comprised of the following: December 31, (In thousands) 2024 2023 2022 Service cost $ 8 $ 7 $ 12 Interest costs 165 166 122 Amortization of net prior service credit 94 83 83 Amortization of net actuarial loss (51) (64) 30 Net periodic post-retirement costs $ 216 $ 192 $ 247
Schedule of Changes in Plan Assets and Benefit Obligations Recognized in Accumulated Other Comprehensive Income	Changes in plan assets and benefit obligations recognized in accumulated other comprehensive income are as follows: December 31, (In thousands) 2024 2023 2022 Amortization of actuarial (loss) $ — $ (6) $ (11) Actuarial (gain) (565) (353) (154) Settlement charge — — — Total recognized in accumulated other comprehensive income (565) (359) (165) Total recognized in net periodic pension cost recognized and other comprehensive income $ (664) $ (403) $ (321) Changes in benefit obligations recognized in accumulated other comprehensive income are as follows: December 31, (In thousands) 2024 2023 2022 Amortization of prior service credit $ (94) $ (83) $ (83) Net actuarial (gain) (139) (1,148) (1,426) Total recognized in accumulated other comprehensive income (233) (1,231) (1,509) Accrued post-retirement liability recognized $ 3,082 $ 3,306 $ 3,215
Schedule of Principal Actuarial Assumptions	The principal actuarial assumptions used are as follows: December 31, 2024 2023 2022 Projected benefit obligation Discount rate 5.55 % 4.99 % 5.21 % Net periodic pension cost Discount rate 4.99 % 5.21 % 2.73 % Long term rate of return on plan assets 6.50 % 6.50 % 6.50 %
Schedule of Fair Values of the Plan's Assets by Asset Category and Level Within the Fair Value Hierarchy	The fair value of the Plan’s assets by category within the fair value hierarchy are as follows at December 31, 2024 and December 31, 2023. During 2023, the Plan's equity mutual funds and fixed income mutual funds were transferred to Level 1 from Level 2 because they are actively traded and quoted prices were available. The Plan did not hold any assets classified as Level 3. December 31, 2024 Asset Category (In thousands) Total Level 1 Level 2 Equity Mutual Funds: Large-Cap $ 1,615 $ 1,615 $ — Mid-Cap 398 398 — Small-Cap 413 413 — International 811 811 — Fixed Income Mutual Funds: Intermediate Duration 1,614 1,614 — Equity Common/Collective Trusts: Large-Cap 360 — 360 Cash Equivalents - money market 45 45 — Total $ 5,256 $ 4,896 $ 360 December 31, 2023 Asset Category (In thousands) Total Level 1 Level 2 Equity Mutual Funds: Large-Cap $ 1,357 $ 1,357 $ — Mid-Cap 364 364 — Small-Cap 386 386 — International 828 828 — Fixed Income Mutual Funds Intermediate Duration 1,674 1,674 — Equity Common/Collective Trusts: Large-Cap 336 — 336 Cash Equivalents - money market 54 54 — Total $ 4,999 $ 4,663 $ 336
Schedule of Estimated Benefit Payments	Estimated benefit payments under the pension plans over the next 10 years at December 31, 2024 are as follows: Year Payments (In thousands) 2025 254 2026 249 2027 244 2028 246 2029 - 2034 1,493 Estimated benefit payments under the post-retirement benefit plan over the next ten years at December 31, 2024 are as follows: Year Payments (In thousands) 2025 99 2026 97 2027 104 2028 101 2029 - 2034 900
Schedule of Amounts in Accumulated Other Comprehensive Income That Have Not Yet Been Recognized as Components of Net Periodic Benefit Cost	The amounts in accumulated other comprehensive income that have not yet been recognized as components of net periodic benefit cost are as follows: December 31, (In thousands) 2024 2023 2022 Net prior service cost $ 981 $ 1,075 $ 1,159 Net actuarial (gain)/loss (928) (690) (812) Total recognized in accumulated other comprehensive income $ 53 $ 385 $ 347

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2024
Income Tax Disclosure [Abstract]
Schedule of Components of Provision for Income Taxes	The components of the Company’s provision for income taxes for the years ended December 31, 2024, 2023, and 2022 were, as follows: (In thousands) 2024 2023 2022 Current: Federal tax expense $ 11,136 $ 5,596 $ 17,915 State tax expense 7,001 7,497 6,831 Total current tax expense 18,137 13,093 24,746 Deferred: Federal tax expense/(benefit) 1,135 (2,658) (2,274) State tax (benefit) (760) (1,711) (1,187) Total deferred tax expense/(benefit) 375 (4,369) (3,461) Change in valuation allowance — — — Income tax expense $ 18,512 $ 8,724 $ 21,285
Schedule of Reconciliation of the Statutory Federal Income Tax Rate to Effective Tax Rate	The following is a reconciliation of the statutory federal income tax rate to the Company’s effective tax rate for the years ended December 31, 2024, 2023, and 2022: 2024 2023 2022 (In thousands, except rates) Amount Rate Amount Rate Amount Rate Statutory tax rate $ 16,698 21.0 % $ 16,448 21.0 % $ 23,902 21.0 % Increase (decrease) resulting from: State taxes, net of federal tax benefit 4,722 6.2 4,570 5.8 4,459 3.9 Tax exempt income - investments, net (3,431) (4.3) (3,611) (4.6) (3,515) (3.1) Bank-owned life insurance (1,762) (2.2) (1,568) (2.0) (1,258) (1.1) Non-deductible merger costs 1,306 1.6 — — — — Tax credits, net of basis reduction 325 0.2 (7,804) (10.0) (2,129) (1.9) Other, net 654 0.8 689 0.9 (174) (0.1) Effective tax rate $ 18,512 23.3 % $ 8,724 11.1 % $ 21,285 18.7 %
Schedule of Components of Deferred Tax Assets and Liabilities	As of December 31, 2024 and 2023, significant components of the Company’s deferred tax assets and liabilities were, as follows: (In thousands) 2024 2023 Deferred tax assets: Allowance for credit losses $ 34,410 $ 31,181 Unrealized capital loss on tax credit investments 275 2,688 Net unrealized loss on securities available for sale, swaps, and pension in OCI 38,459 50,704 Employee benefit plans 11,571 12,102 Purchase accounting adjustments 3,240 4,587 Net operating loss carryforwards 99 202 Deferred loan fees 6,055 5,654 Lease liability 14,701 13,583 Premises and equipment 1,979 1,188 Nonaccrual interest 528 890 Intangible amortization 1,297 1,020 Other 2,176 2,337 Deferred tax assets, net before valuation allowances 114,790 126,136 Valuation allowance (400) (400) Deferred tax assets, net of valuation allowances $ 114,390 $ 125,736 Deferred tax liabilities: Loan servicing rights $ (1,126) $ (1,133) Unamortized tax credit reserve (1,949) (1,661) Right-of-use asset (13,866) (12,874) Deferred tax liabilities $ (16,941) $ (15,668) Deferred tax assets, net $ 97,449 $ 110,068
Schedule of Components of the Valuation Allowance on Deferred Tax Asset	The components of the Company’s valuation allowance on its deferred tax asset, net as of December 31, 2024 and 2023 were, as follows: (in thousands) 2024 2023 State valuation allowances $ (400) $ (400)
Schedule of Changes in Unrecognized Tax Benefits	The following table presents changes in unrecognized tax benefits for the years ended December 31, 2024, 2023, and 2022: (In thousands) 2024 2023 2022 Unrecognized tax benefits at January 1 $ 1,824 $ 1,042 $ 1,025 Increase in gross amounts of tax positions related to prior years 1,456 782 17 Decrease in gross amounts of tax positions related to prior years (1,182) — — Unrecognized tax benefits at December 31 $ 2,098 $ 1,824 $ 1,042

DERIVATIVE INSTRUMENTS AND HE_2

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Tables)	12 Months Ended
	Dec. 31, 2024
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Interest Rate Swap Agreements and Non-hedging Derivative Assets and Liabilities	Information about interest rate swap agreements and non-hedging derivative assets and liabilities at December 31, 2024 follows: Notional Weighted Weighted Average Rate Estimated December 31, 2024 Received Contract pay rate (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on commercial loans (1) $ 600,000 0.9 3.64 % 4.53 % $ — Interest rate collars on commercial loans 200,000 1.5 193 Total cash flow hedges 800,000 193 Economic hedges: Interest rate swap on tax advantaged economic development bond $ 5,297 4.9 5.03 % 5.09 % $ (79) Interest rate swaps on loans with commercial loan customers (1) 1,859,480 4.5 4.65 % 5.35 % (72,911) Reverse interest rate swaps on loans with commercial loan customers (1) 1,859,480 4.5 5.35 % 4.65 % 41,501 Risk participation agreements with dealer banks 345,367 5.1 56 Forward sale commitments 2,991 0.2 34 Total economic hedges 4,072,615 (31,399) Non-hedging derivatives: Commitments to lend 10,512 0.2 90 Total non-hedging derivatives 10,512 90 Total $ 4,883,127 $ (31,116) (1) Fair value estimates include the impact of $28.8 million settled to market contract agreements. Information about interest rate swap agreements and non-hedging derivative asset and liabilities at December 31, 2023 follows: Notional Weighted Weighted Average Rate Estimated December 31, 2023 Received Contract pay rate (In thousands) (In years) (In thousands) Cash flow hedges: Interest rate swaps on commercial loans (1) $ 600,000 1.9 3.64 % 5.35 % $ — Interest rate collars on commercial loans 200,000 2.5 1,658 Total cash flow hedges 800,000 1,658 Economic hedges: Interest rate swap on tax advantaged economic development bond $ 6,202 5.9 5.82 % 5.09 % $ (172) Interest rate swaps on loans with commercial loan customers 1,795,562 4.9 4.36 % 6.27 % (63,865) Reverse interest rate swaps on loans with commercial loan customers (1) 1,795,562 4.9 6.27 % 4.36 % 32,053 Risk participation agreements with dealer banks 376,553 5.5 (18) Forward sale commitments 2,207 0.2 21 Total economic hedges 3,976,086 (31,981) Non-hedging derivatives: Commitments to lend 11,104 0.2 34 Total non-hedging derivatives 11,104 34 Total $ 4,787,190 $ (30,289) (1) Fair value estimates include the impact of $26.7 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/(loss) section of the Consolidated Statements of Comprehensive Income/(Loss) (related to interest rate derivatives designated as hedges of cash flows), were as follows: Years Ended December 31, (In thousands) 2024 2023 2022 Interest rate swaps and collars on commercial loans: Unrealized gain/(loss) recognized in accumulated other comprehensive loss $ 596 $ 1,770 $ (6,667) Less: Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest income (632) (632) — Net tax benefit/(expense) on items recognized in accumulated other comprehensive income (321) (630) 1,789 Other comprehensive gain/(loss) recorded in accumulated other comprehensive income/(loss), net of reclassification adjustments and tax effects $ 907 $ 1,772 $ (4,878) Net interest expense recognized on hedged commercial loans $ 9,889 $ 9,026 $ (15)
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: Years Ended December 31, (In thousands) 2024 2023 2022 Economic hedges Interest rate swap on industrial revenue bond: Unrealized gain recognized in other non-interest income $ 93 $ 21 $ 941 Interest rate swaps on loans with commercial loan customers: Unrealized (loss)/gain recognized in other non-interest income (9,108) 31,310 (171,272) Favorable change in credit valuation adjustment recognized in other non-interest income — — 1,809 Reverse interest rate swaps on loans with commercial loan customers: Unrealized gain/(loss) recognized in other non-interest income 9,108 (31,310) 171,272 Risk Participation Agreements: Unrealized gain/(loss) recognized in other non-interest income 74 (74) (521) Forward Commitments: Unrealized gain/(loss) recognized in other non-interest income 13 13 (126) Non-hedging derivatives Commitments to lend: Unrealized gain/(loss) recognized in other non-interest income $ 56 $ 17 $ (107) Realized gain in other non-interest income 1,509 536 462
Schedule of Assets Subject to an Enforceable Master Netting Arrangement	The following table presents the assets and liabilities subject to an enforceable master netting arrangement as of December 31, 2024 and December 31, 2023: Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts of Assets Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2024 Interest Rate Swap Agreements: Institutional counterparties $ 76,242 $ (31,410) $ 44,832 $ — $ (32,500) $ 12,332 Commercial counterparties 3,092 — 3,092 — — 3,092 Total $ 79,334 $ (31,410) $ 47,924 $ — $ (32,500) $ 15,424 Offsetting of Financial Assets and Derivative Assets Gross Gross Amounts Net Amounts of Assets Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2023 Interest Rate Swap Agreements: Institutional counterparties $ 71,579 $ (31,812) $ 39,767 $ — $ — $ 39,767 Commercial counterparties 5,992 — 5,992 — — 5,992 Total $ 77,571 $ (31,812) $ 45,759 $ — $ — $ 45,759
Schedule of Liabilities Subject to an Enforceable Master Netting Arrangement	Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts of Liabilities Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2024 Interest Rate Swap Agreements: Institutional counterparties $ (5,741) $ 2,659 $ (3,082) $ 9,078 $ — $ 5,996 Commercial counterparties (76,003) — (76,003) — — (76,003) Total $ (81,744) $ 2,659 $ (79,085) $ 9,078 $ — $ (70,007) Offsetting of Financial Liabilities and Derivative Liabilities Gross Gross Amounts Net Amounts of Liabilities Gross Amounts Not Offset in the Statements Financial Cash (in thousands) Net Amount As of December 31, 2023 Interest Rate Swap Agreements: Institutional counterparties $ (11,277) $ 5,142 $ (6,135) $ 9,633 $ — $ 3,498 Commercial counterparties (69,796) — (69,796) — — (69,796) Total $ (81,073) $ 5,142 $ (75,931) $ 9,633 $ — $ (66,298)

LEASES (Tables)

LEASES (Tables)	12 Months Ended
	Dec. 31, 2024
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) December 31, 2024 December 31, 2023 Lease Right-of-Use Assets Classification Operating lease right-of-use assets Other assets $ 50,195 $ 47,348 Finance lease right-of-use assets Premises and equipment, net 629 5,597 Total Lease Right-of-Use Assets $ 50,824 $ 52,945 Lease Liabilities Operating lease liabilities Other liabilities $ 55,986 $ 53,026 Finance lease liabilities Other liabilities 891 8,681 Total Lease Liabilities $ 56,877 $ 61,707
Schedule of Supplemental Cash Flow Information Related to Leases	Supplemental information related to leases was as follows: December 31, 2024 December 31, 2023 Weighted-Average Remaining Lease Term (in years) Operating leases 8.1 8.3 Finance leases 13.0 10.8 Weighted-Average Discount Rate Operating leases 3.53 % 2.90 % Finance leases 5.00 % 5.00 % Supplemental cash flow information related to leases was as follows: (In thousands) December 31, 2024 December 31, 2023 December 31, 2022 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 8,302 $ 9,009 $ 9,438 Operating cash flows from finance leases 46 446 476 Financing cash flows from finance leases 47 593 555
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 December 31, 2024: (In thousands) Operating Leases Finance Leases 2025 $ 9,053 $ 93 2026 9,194 93 2027 8,507 93 2028 7,400 93 2029 6,494 93 Thereafter 23,250 744 Total undiscounted lease payments 63,898 1,209 Less amounts representing interest (7,912) (318) Lease liability $ 55,986 $ 891
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 December 31, 2024: (In thousands) Operating Leases Finance Leases 2025 $ 9,053 $ 93 2026 9,194 93 2027 8,507 93 2028 7,400 93 2029 6,494 93 Thereafter 23,250 744 Total undiscounted lease payments 63,898 1,209 Less amounts representing interest (7,912) (318) Lease liability $ 55,986 $ 891

OTHER COMMITMENTS, CONTINGENC_2

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES (Tables)	12 Months Ended
	Dec. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Schedule of Financial Instruments Outstanding Whose Contract Amounts Represent Credit Risk	A summary of financial instruments outstanding whose contract amounts represent credit risk is as follows at year-end: (In thousands) 2024 2023 Commitments to originate new loans $ 308,480 $ 256,877 Unused funds on commercial and other lines of credit 1,075,159 1,146,415 Unadvanced funds on home equity lines of credit 335,878 347,543 Unadvanced funds on construction and real estate loans 365,235 467,702 Standby letters of credit 34,042 18,975 Total $ 2,118,794 $ 2,237,512

SHAREHOLDERS' EQUITY AND EARN_2

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE (Tables)	12 Months Ended
	Dec. 31, 2024
Equity [Abstract]
Schedule of Actual and Required Capital Ratios	The Company and Bank’s actual and required capital amounts were as follows: Minimum Actual (Dollars in thousands) Amount Ratio Amount Ratio December 31, 2024 Company (Consolidated) Total capital to risk-weighted assets $ 1,505,487 15.45 % $ 779,790 8.00 % Common Equity Tier 1 Capital to risk weighted assets 1,266,641 12.99 438,632 4.50 Tier 1 capital to risk-weighted assets 1,289,029 13.22 584,843 6.00 Tier 1 capital to average assets 1,289,029 10.97 389,895 4.00 Total risk-weighted assets 9,747,379 N/A N/A N/A December 31, 2023 Company (Consolidated) Total capital to risk-weighted assets $ 1,371,740 14.36 % $ 764,130 8.00 % Common Equity Tier 1 Capital to risk weighted assets 1,149,620 12.04 429,823 4.50 Tier 1 capital to risk-weighted assets 1,171,957 12.27 573,098 6.00 Tier 1 capital to average assets 1,171,957 9.65 382,065 4.00 Total risk-weighted assets 9,551,627 N/A N/A N/A Minimum Minimum to be Well Actual (Dollars in thousands) Amount Ratio Amount Ratio Amount Ratio December 31, 2024 Bank Total capital to risk-weighted assets $ 1,342,307 13.78 % $ 779,226 8.00 % $ 974,032 10.00 % Common Equity Tier 1 Capital to risk weighted assets 1,225,075 12.58 438,314 4.50 633,121 6.50 Tier 1 capital to risk-weighted assets 1,225,075 12.58 584,419 6.00 779,226 8.00 Tier 1 capital to average assets 1,225,075 10.44 389,613 4.00 487,016 5.00 Total risk-weighted assets 9,740,322 N/A N/A N/A N/A N/A December 31, 2023 Bank Total capital to risk-weighted assets $ 1,268,037 13.29 % $ 763,503 8.00 % $ 954,379 10.00 % Common Equity Tier 1 Capital to risk weighted assets 1,167,282 12.23 429,470 4.50 620,346 6.50 Tier 1 capital to risk-weighted assets 1,167,282 12.23 572,627 6.00 763,503 8.00 Tier 1 capital to average assets 1,167,282 9.61 381,751 4.00 477,189 5.00 Total risk-weighted assets 9,543,786 N/A N/A N/A N/A N/A
Schedule of Components of Accumulated Other Comprehensive Income	Year-end components of accumulated other comprehensive (loss) are as follows: (In thousands) 2024 2023 Other accumulated comprehensive (loss), before tax: Net unrealized holding (loss) on AFS securities $ (142,127) $ (188,927) Net (loss) on effective cash flow hedging derivatives (3,037) (4,265) Net unrealized holding (loss) on pension plans 365 (528) Income taxes related to items of accumulated other comprehensive (loss): Net unrealized holding loss on AFS securities 37,716 49,401 Net loss on effective cash flow hedging derivatives 838 1,159 Net unrealized holding loss on pension plans (98) 144 Accumulated other comprehensive (loss) $ (106,343) $ (143,016)
Schedule of Components of Other Comprehensive (Loss)/Income	The following table presents the components of other comprehensive income/(loss) for the years ended December 31, 2024, 2023, and 2022: (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2024 Net unrealized holding gain on AFS securities: Net unrealized (loss) arising during the period $ (3,137) $ 1,878 $ (1,259) Less: reclassification adjustment for (losses) realized in net income (49,937) 13,563 (36,374) Net unrealized holding gain on AFS securities 46,800 (11,685) 35,115 Net gain on cash flow hedging derivatives: Net unrealized gain arising during the period 596 (149) 447 Less: reclassification adjustment for (losses) realized in net income (632) 172 (460) Net gain on cash flow hedging derivatives 1,228 (321) 907 Net unrealized holding gain on pension plans Net unrealized gain arising during the period 893 (242) 651 Less: reclassification adjustment for (losses) realized in net income — — — Net unrealized holding gain on pension plans 893 (242) 651 Other comprehensive income $ 48,921 $ (12,248) $ 36,673 (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2023 Net unrealized holding gain on AFS securities: Net unrealized gain arising during the period $ 22,903 $ (5,122) $ 17,781 Less: reclassification adjustment for (losses) realized in net income (25,057) 6,806 (18,251) Net unrealized holding gain on AFS securities 47,960 (11,928) 36,032 Net gain on cash flow hedging derivatives: Net unrealized gain arising during the period 1,770 (458) 1,312 Less: reclassification adjustment for (losses) realized in net income (632) 172 (460) Net gain on cash flow hedging derivatives 2,402 (630) 1,772 Net unrealized holding gain on pension plans Net unrealized gain arising during the period 316 (84) 232 Less: reclassification adjustment for (losses) realized in net income — — — Net unrealized holding gain on pension plans 316 (84) 232 Other comprehensive income $ 50,678 $ (12,642) $ 38,036 (In thousands) Before Tax Tax Effect Net of Tax Year Ended December 31, 2022 Net unrealized holding (loss) on AFS securities: Net unrealized (loss) arising during the period $ (235,075) $ 60,920 $ (174,155) Less: reclassification adjustment for gains realized in net income 6 (2) 4 Net unrealized holding (loss) on AFS securities (235,081) 60,922 (174,159) Net (loss) on cash flow hedging derivatives: Net unrealized (loss) arising during the period $ (6,667) $ 1,789 $ (4,878) Less: reclassification adjustment for (losses) realized in net income — — — Net (loss) on cash flow hedging derivatives (6,667) 1,789 (4,878) Net unrealized holding gain on pension plans Net unrealized gain arising during the period 1,674 (446) 1,228 Less: reclassification adjustment for (losses) realized in net income — — — Net unrealized holding gain on pension plans 1,674 (446) 1,228 Other comprehensive (loss) $ (240,074) $ 62,265 $ (177,809)
Schedule of Gross Changes in Each Component of Accumulated Other Comprehensive Income (Loss)	The following table presents the changes in each component of accumulated other comprehensive (loss)/income, for the years ended December 31, 2024, 2023, and 2022: (in thousands) Net unrealized holding gain (loss) on AFS Securities Net loss on effective cash flow hedging derivatives Net unrealized holding gain (loss) on pension plans Total Year Ended December 31, 2024 Balance at Beginning of Year $ (139,525) $ (3,106) $ (385) $ (143,016) Other comprehensive income before reclassifications (1,259) 447 651 (161) Amounts reclassified from accumulated other comprehensive income (36,374) (460) — (36,834) Total other comprehensive income 35,115 907 651 36,673 Balance at End of Period $ (104,410) $ (2,199) $ 266 $ (106,343) Year Ended December 31, 2023 Balance at Beginning of Year $ (175,557) $ (4,878) $ (617) $ (181,052) Other comprehensive (loss)/income before reclassifications 17,781 1,312 232 19,325 Amounts reclassified from accumulated other comprehensive income (18,251) (460) — (18,711) Total other comprehensive (loss)/income 36,032 1,772 232 38,036 Balance at End of Period $ (139,525) $ (3,106) $ (385) $ (143,016) Year Ended December 31, 2022 Balance at Beginning of Year $ (1,398) $ — $ (1,845) $ (3,243) Other comprehensive (loss)/income before reclassifications (174,155) (4,878) 1,228 (177,805) Amounts reclassified from accumulated other comprehensive income 4 — — 4 Total other comprehensive (loss)/income (174,159) (4,878) 1,228 (177,809) Balance at End of Period $ (175,557) $ (4,878) $ (617) $ (181,052)
Schedule of Amounts Reclassified out of Each Component of Accumulated Other Comprehensive (Loss)/Income	The following table presents the amounts reclassified out of each component of accumulated other comprehensive income/(loss) for the years ended December 31, 2024, 2023, and 2022: Affected Line Item in the Years Ended December 31, (in thousands) 2024 2023 2022 Realized (losses)/gains on AFS securities: $ (49,937) $ (25,057) $ 6 Non-interest income 13,563 6,806 (2) Tax expense (36,374) (18,251) 4 Realized (losses) on cash flow hedging derivatives: (632) (632) — Interest expense — — — Non-interest expense 172 172 — Tax benefit (460) (460) — Realized (losses) on pension plans: — — — Non-interest expense — — — Tax expense — — — Total reclassifications for the period $ (36,834) $ (18,711) $ 4
Schedule of Earnings (Loss) Per Share	Earnings per common share has been computed based on the following (average diluted shares outstanding is calculated using the treasury stock method): Years Ended December 31, (In thousands, except per share data) 2024 2023 2022 Net income $ 61,003 $ 69,598 $ 92,533 Average number of common shares issued 51,903 51,903 51,903 Less: average number of treasury shares 8,593 7,820 5,577 Less: average number of unvested stock award shares 802 795 762 Average number of basic common shares outstanding 42,508 43,288 45,564 Plus: dilutive effect of unvested stock award shares 253 216 345 Plus: dilutive effect of stock options outstanding — — 5 Average number of diluted common shares outstanding 42,761 43,504 45,914 Basic earnings per common share $ 1.44 $ 1.61 $ 2.03 Diluted earnings per common share $ 1.43 $ 1.60 $ 2.02

STOCK-BASED COMPENSATION PLANS

STOCK-BASED COMPENSATION PLANS (Tables)	12 Months Ended
	Dec. 31, 2024
Share-Based Payment Arrangement [Abstract]
Schedule of Activity in the Stock Award and Stock Option Plans	A summary of activity in the Company’s stock compensation plans is shown below: Non-vested Stock Stock Options Outstanding (Shares in thousands) Number of Shares Weighted- Average Number of Shares Weighted- Average Exercise Price Balance, December 31, 2023 785 $ 24.92 49 $ 26.46 Granted 500 23.25 — — Stock options exercised — — (5) 24.71 Stock awards vested (359) 12.56 — — Forfeited (130) 25.55 — — Expired — — — — Balance, December 31, 2024 796 $ 24.94 44 $ 26.65

FAIR VALUE MEASUREMENTS (Tables

FAIR VALUE MEASUREMENTS (Tables)	12 Months Ended
	Dec. 31, 2024
Fair Value Disclosures [Abstract]
Schedule of Financial Assets and Liabilities Measured at Fair Value on a Recurring Basis	The following table summarizes assets and liabilities measured at fair value on a recurring basis as of year-end 2024 and 2023 segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: December 31, 2024 (In thousands) Level 1 Level 2 Level 3 Total Trading security $ — $ — $ 5,258 $ 5,258 Available-for-sale securities: U.S Treasuries 6,989 — — 6,989 Municipal bonds and obligations — 60,864 — 60,864 Agency collateralized mortgage obligations — 264,562 — 264,562 Agency residential mortgage-backed securities — 220,240 — 220,240 Agency commercial mortgage-backed securities — 66,711 — 66,711 Corporate bonds — 32,456 3,901 36,357 Marketable equity securities — 655 — 655 Loans held for investment — — 325 325 Loans held for sale — 3,076 — 3,076 Derivative assets — 47,799 124 47,923 Capitalized servicing rights — — 1,706 1,706 Derivative liabilities — 79,039 — 79,039 December 31, 2023 Level 1 Level 2 Level 3 Total (In thousands) Trading security $ — $ — $ 6,142 $ 6,142 Securities available for sale: U.S Treasuries 7,981 — — 7,981 Municipal bonds and obligations — 63,853 — 63,853 Agency collateralized mortgage obligations — 347,874 — 347,874 Agency residential mortgage-backed securities — 417,480 — 417,480 Agency commercial mortgage-backed securities — 145,326 — 145,326 Corporate bonds — 35,192 3,923 39,115 Other bonds and obligations — 656 656 Marketable equity securities 13,029 — — 13,029 Loans held for investment at fair value — — 374 374 Loans held for sale — 2,237 — 2,237 Derivative assets — 45,613 55 45,668 Capitalized servicing rights — — 1,526 1,526 Derivative liabilities — 75,957 — 75,957
Schedule of Loans Held for Investment and Loans Held for Sale	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 December 31, 2024. Aggregate Fair Value December 31, 2024 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 325 $ 6,541 $ (6,216) Aggregate Fair Value December 31, 2023 Aggregate Aggregate Less Aggregate (In thousands) Fair Value Unpaid Principal Unpaid Principal Loans held for investment at fair value $ 374 $ 8,809 $ (8,435) Loans held for sale. The Company elected the fair value option for all mortgage loans originated for sale ("HFS") that were 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 Aggregate Aggregate Fair Value December 31, 2024 (In thousands) Loans held for sale $ 3,076 $ 3,015 $ 61 Aggregate Aggregate Aggregate Fair Value December 31, 2023 (In thousands) Loans held for sale $ 2,237 $ 2,205 $ 32
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 that were measured at fair value on a recurring basis at year-end 2024 and 2023: Assets (Liabilities) (In thousands) Trading Securities Available for Sale Loans Held for Investment Commitments to Lend Forward Capitalized Servicing Rights Balance as of December 31, 2022 $ 6,708 $ 4,000 $ 605 $ 17 $ 8 $ 1,846 Unrealized gain/(loss), net recognized in other non-interest income 294 — (128) 305 13 (320) Unrealized (loss) included in accumulated other comprehensive loss — (77) — — — — Paydown of asset (860) — (103) — — — Transfers to loans held for sale — — — (288) — — Balance as of December 31, 2023 $ 6,142 $ 3,923 $ 374 $ 34 $ 21 $ 1,526 Unrealized gain/(loss), net recognized in other non-interest income 21 — 27 1,256 13 180 Unrealized (loss) in included in accumulated other comprehensive loss — (22) — — — — Paydown of asset (905) — (76) — — — Transfers to loans held for sale — — (1,200) — — Balance as of December 31, 2024 $ 5,258 $ 3,901 $ 325 $ 90 $ 34 $ 1,706 Unrealized (losses)/gains relating to instruments still held at December 31, 2024 $ (39) $ (99) $ — $ 90 $ 34 $ — Unrealized (losses)/gains relating to instruments still held at December 31, 2023 $ (60) $ (77) $ — $ 34 $ 21 $ —
Schedule of Quantitative Information about the Significant Unobservable Inputs within Level 3	Quantitative information about the significant unobservable inputs within Level 3 recurring assets/(liabilities) as of December 31, 2024 and 2023 are as follows: Fair Value Significant Unobservable Input Value (In thousands) December 31, 2024 Valuation Techniques Unobservable Inputs Assets Trading Security $ 5,258 Discounted Cash Flow Discount Rate 3.36 % Securities Available for Sale 3,901 Indication from Market Maker Price 97.53 % Loans held for investment 325 Discounted Cash Flow Discount Rate 25.00 % Collateral Value $0.0 - $18.8 Commitments to Lend 90 Historical Trend Closing Ratio 83.21 % Pricing Model Origination Costs, per loan $ 3 Forward Commitments 34 Historical Trend Closing Ratio 83.21 % Pricing Model Origination Costs, per loan $ 3 Capitalized Servicing Rights 1,706 Discounted cash flow Constant prepayment rate (CPR) 7.21 % Discount rate 10.09 % Total $ 11,314 Fair Value Significant (In thousands) December 31, 2023 Valuation Techniques Unobservable Inputs Assets Trading Security $ 6,142 Discounted Cash Flow Discount Rate 4.19 % Securities Available for Sale 3,923 Indication from Market Maker Price 98.07 % Loans held for investment 374 Discounted Cash Flow Discount Rate 25.00 % Collateral Value $0.0 -$18.3 Commitments to Lend 34 Historical Trend Closing Ratio 84.29 % Pricing Model Origination Costs, per loan $ 3 Forward Commitments 21 Historical Trend Closing Ratio 84.29 % Pricing Model Origination Costs, per loan $ 3 Capitalized Servicing Rights 1,526 Discounted cash flow Constant prepayment rate (CPR) 7.63 % Discount rate 11.08 % Total $ 12,020 December 31, 2024 Fair Value Measurements as of December 31, 2024 (In thousands) Level 3 Level 3 Assets Individually evaluated loans $ 2,195 December 2024 Capitalized servicing rights 10,084 December 2024 Total $ 12,279 December 31, 2023 Fair Value Measurements as of December 31, 2023 (In thousands) Level 3 Level 3 Assets Individually evaluated loans $ 4,395 December 2023 Capitalized servicing rights 10,569 December 2023 Total $ 14,964 Quantitative information about the significant unobservable inputs within Level 3 non-recurring assets as of December 31, 2024 and 2023 are as follows: (in thousands) December 31, 2024 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Individually evaluated loans $ 2,195 Fair value of collateral Discounted Cash Flow- Loss Severity (100.00)% to (0.03)% ((66.97)%) Appraised value $0 to $180 ($153) Capitalized servicing rights 10,084 Discounted cash flow Constant prepayment rate (CPR) 4.87% to 14.58% (13.33%) Discount rate 10.47% to 12.97% (11.56%) Total Assets $ 12,279 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individual properties. (in thousands) December 31, 2023 Valuation Techniques Unobservable Inputs Range (Weighted Average) (a) Assets Individually evaluated loans $ 4,395 Fair value of collateral Discounted Cash Flow- Loss Severity (100.00)% to (0.08)% ((67.00)%) Appraised value $0 to $3,389 ($2,774) Capitalized servicing rights 10,569 Discounted cash flow Constant prepayment rate (CPR) 5.43% to 17.15% (12.31%) Discount rate 10.09% to 16.59% (13.82%) Total Assets $ 14,964 (a) Where dollar amounts are disclosed, the amounts represent the lowest and highest fair value of the respective assets in the population except for adjustments for market/property conditions, which represents the range of adjustments to individual properties.
Schedule of Estimated Non-recurring Fair Value of Financial Instruments	The following tables summarize the estimated fair values, which represent exit price, and related carrying amounts, of the Company’s financial instruments. Certain financial instruments and all non-financial instruments are excluded from disclosure requirements. Accordingly, the aggregate fair value amounts presented herein may not necessarily represent the underlying fair value of the Company. December 31, 2024 Carrying Fair (In thousands) Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 1,128,409 $ 1,128,409 $ 1,128,409 $ — $ — Trading security 5,258 5,258 — — 5,258 Marketable equity securities 655 655 — 655 — Securities available for sale 655,723 655,723 6,989 644,833 3,901 Securities held to maturity 507,658 433,382 — 432,280 1,102 FHLB stock and restricted equity securities 19,565 N/A N/A N/A N/A Net loans 9,270,294 8,984,103 — — 8,984,103 Loans held for sale 3,076 3,076 — 3,076 — Accrued interest receivable 49,410 49,410 — 49,410 — Derivative assets 47,923 47,923 — 47,799 124 Financial Liabilities Total deposits 10,375,204 10,367,636 — 10,367,636 — Short-term debt 103,500 103,635 — 103,635 — Long-term FHLB advances 212,982 209,736 — 209,736 — Subordinated notes 121,612 110,447 — 110,447 — Accrued interest payable 9,005 9,005 — 9,005 — Derivative liabilities 79,039 79,039 — 79,039 — December 31, 2023 Carrying Fair (In thousands) Level 1 Level 2 Level 3 Financial Assets Cash and cash equivalents $ 1,203,244 $ 1,203,244 $ 1,203,244 $ — $ — Trading security 6,142 6,142 — — 6,142 Marketable equity securities 13,029 13,029 13,029 — — Securities available for sale 1,022,285 1,022,285 7,981 1,010,381 3,923 Securities held to maturity 543,351 476,228 — 474,742 1,486 FHLB stock and restricted equity securities 22,689 N/A N/A N/A N/A Net loans 8,934,329 8,768,108 — — 8,768,108 Loans held for sale 2,237 2,237 — 2,237 — Accrued interest receivable 53,096 53,096 — 53,096 — Derivative assets 45,668 45,668 — 45,613 55 Financial Liabilities Total deposits 10,633,384 10,615,655 — 10,615,655 — Short-term debt 260,000 260,035 — 260,035 — Long-term FHLB advances 125,223 123,747 — 123,747 — Subordinated notes 121,363 98,138 — 98,138 — Accrued interest payable 13,766 13,766 — 13,766 — Derivative liabilities 75,957 75,957 — 75,957 —

CONDENSED FINANCIAL STATEMENT_2

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY (Tables)	12 Months Ended
	Dec. 31, 2024
Condensed Financial Information Disclosure [Abstract]
Schedule of CONDENSED BALANCE SHEETS	CONDENSED BALANCE SHEETS December 31, (In thousands) 2024 2023 Assets Cash due from Berkshire Bank $ 163,605 $ 98,452 Investment in subsidiaries 1,134,014 1,038,039 Other assets 218 399 Total assets $ 1,297,837 $ 1,136,890 Liabilities and Shareholders’ Equity Subordinated notes $ 121,612 $ 121,363 Accrued expenses 8,801 3,306 Shareholders’ equity 1,167,424 1,012,221 Total liabilities and shareholders’ equity $ 1,297,837 $ 1,136,890
Schedule of CONDENSED STATEMENTS OF OPERATIONS	CONDENSED STATEMENTS OF INCOME Years Ended December 31, (In thousands) 2024 2023 2022 Income: Dividends from subsidiaries $ 14,000 $ 62,000 $ 108,000 Other 53 50 23 Total income 14,053 62,050 108,023 Interest expense 5,697 5,697 7,044 Non-interest expenses 9,121 3,702 2,754 Total expense 14,818 9,399 9,798 Income before income taxes and equity in undistributed income of subsidiaries (765) 52,651 98,225 Income tax (benefit) (2,463) (2,500) (2,586) Income before equity in undistributed income of subsidiaries 1,698 55,151 100,811 Equity in undistributed results of operations of subsidiaries 59,305 14,447 (8,278) Net income 61,003 69,598 92,533 Comprehensive income/(loss) $ 97,676 $ 107,634 $ (85,276)
Schedule of CONDENSED STATEMENTS OF CASH FLOWS	CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, (In thousands) 2024 2023 2022 Cash flows from operating activities: Net income $ 61,003 $ 69,598 $ 92,533 Adjustments to reconcile net income to net cash provided by operating activities: Equity in undistributed results of operations of subsidiaries (59,305) (14,447) 8,278 Other, net 11,569 8,688 5,998 Net cash provided by operating activities 13,267 63,839 106,809 Cash flows from investing activities: Sale of securities — — — Net cash provided by investing activities — — — Cash flows from financing activities: Proceeds from issuance of long term debt — — 98,032 Repayment of long term debt — — (75,000) Net proceeds from common stock 100,000 — — Payment to repurchase common stock (17,536) (23,844) (124,519) Common stock cash dividends paid (30,940) (31,707) (24,527) Other, net 362 142 281 Net cash (used) in financing activities 51,886 (55,409) (125,733) Net change in cash and cash equivalents 65,153 8,430 (18,924) Cash and cash equivalents at beginning of year 98,452 90,022 108,946 Cash and cash equivalents at end of year $ 163,605 $ 98,452 $ 90,022

QUARTERLY DATA (UNAUDITED) (Tab

QUARTERLY DATA (UNAUDITED) (Tables)	12 Months Ended
	Dec. 31, 2024
Quarterly Financial Information Disclosure [Abstract]
Schedule of Quarterly Results of Operations	Quarterly results of operations were as follows: 2024 2023 (In thousands, except per share data) Fourth Quarter Third Quarter Second Quarter First Quarter Fourth Quarter Third Quarter Second Quarter First Quarter Interest and dividend income $ 150,555 $ 157,268 $ 154,109 $ 152,006 $ 150,537 $ 148,021 $ 145,425 $ 132,316 Interest expense 63,700 69,209 65,577 63,866 62,116 57,687 52,666 34,783 Net interest income 86,855 88,059 88,532 88,140 88,421 90,334 92,759 97,533 Non-interest income 23,325 37,555 20,133 (32,599) (8,383) 17,465 17,094 16,606 Total revenue 110,180 125,614 108,665 55,541 80,038 107,799 109,853 114,139 Provision expense for credit losses 6,000 5,500 6,499 6,000 7,000 8,000 8,000 8,999 Non-interest expense 77,575 71,960 70,931 76,020 78,992 76,513 74,048 71,955 Income before income taxes 26,605 48,154 31,235 (26,479) (5,954) 23,286 27,805 33,185 Income tax expense/(benefit) 6,948 10,645 7,210 (6,291) (4,509) 3,741 3,944 5,548 Net income $ 19,657 $ 37,509 $ 24,025 $ (20,188) $ (1,445) $ 19,545 $ 23,861 $ 27,637 Basic earnings per share $ 0.46 $ 0.89 $ 0.57 $ (0.47) $ (0.03) $ 0.45 $ 0.55 $ 0.63 Diluted earnings per share $ 0.46 $ 0.88 $ 0.57 $ (0.47) $ (0.03) $ 0.45 $ 0.55 $ 0.63 Weighted average common shares outstanding: Basic 42,661 42,170 42,437 42,777 42,852 43,164 43,443 43,693 Diluted 43,064 42,454 42,508 43,028 43,101 43,347 43,532 44,036

NET INTEREST INCOME AFTER PRO_2

NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES (Tables)	12 Months Ended
	Dec. 31, 2024
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 years ended 2024, 2023 and 2022, respectively: Years Ended December 31, (In thousands) 2024 2023 2022 Net interest income $ 351,586 $ 369,047 $ 344,597 Provision expense for credit losses 23,999 31,999 11,000 Net interest income after provision for credit losses 327,587 337,048 333,597 Total non-interest income 48,414 42,782 68,937 Total non-interest expense 296,486 301,508 288,716 Income before income taxes 79,515 78,322 113,818 Income tax expense 18,512 8,724 21,285 Net income 61,003 69,598 92,533

TAX EQUITY INVESTMENTS (Tables)

TAX EQUITY INVESTMENTS (Tables)	12 Months Ended
	Dec. 31, 2024
Equity Method Investments and Joint Ventures [Abstract]
Schedule of Fiscal Year Maturity Commitment	As of December 31, 2024, the Company's delayed equity contributions were estimated to be paid as follows: (In thousands) Delayed Equity Contributions 2025 $ 11,680 2026 3,921 2027 2,887 2028 18 Thereafter 237 Total delayed equity contributions $ 18,743
Schedule Of Tax Credit And Benefits	The following table presents income tax credits and other income tax benefits, as well as amortization expense, associated with investments where the proportional amortization method of accounting has been applied for the periods indicated. (In thousands) Year Ended Provision for Income Taxes: Amortization of tax credit investments $ (10,420) Tax credit and other tax benefit/(expense) 11,934 Total provision for income taxes 1,514

REVENUE (Tables)

REVENUE (Tables)	12 Months Ended
	Dec. 31, 2024
Revenue from Contract with Customer [Abstract]
Schedule of Disaggregation of Revenue	The following presents non-interest income, segregated by revenue streams in-scope and out-of-scope of Topic 606, for the years ended 2024, 2023, and 2022, respectively. Years Ended December 31, (In thousands) 2024 2023 2022 Non-interest income In-scope of Topic 606: Service charges on deposit accounts $ 24,084 $ 24,160 $ 22,396 Wealth management fees 10,840 10,197 10,008 Interchange income 8,298 8,395 8,470 Non-interest income (in-scope of Topic 606) $ 43,222 $ 42,752 $ 40,874 Non-interest income (out-of-scope of Topic 606) 5,192 30 28,063 Total non-interest income $ 48,414 $ 42,782 $ 68,937

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Dec. 31, 2024 segment
Accounting Policies [Abstract]
Minimum number of days past due for loans excluding automobile loans on which interest is generally not accrued	90 days
Number of days until which automobile loans accrue, after which they are charged off	120 days
Number of reportable segments	1
Number of operating segments	1

CASH AND CASH EQUIVALENTS (Deta

CASH AND CASH EQUIVALENTS (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
CASH AND CASH EQUIVALENTS
Reserve requirement, included in cash and equivalents	$ 0	$ 0
Short-term investments pledged as collateral
CASH AND CASH EQUIVALENTS
Short-term investments	$ 0	$ 0

TRADING SECURITY (Details)

TRADING SECURITY (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Amortized cost	$ 5,300	$ 6,200
Fair value	5,300	6,100
Unrealized gains (losses)	$ 21	$ 294	$ (830)

SECURITIES - Schedule of Securi

SECURITIES - Schedule of Securities Available for Sale (AFS) and Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Securities available for sale
Amortized Cost	$ 797,851	$ 1,211,212
Gross Unrealized Gains	193	598
Gross Unrealized Losses	(142,321)	(189,525)
Fair Value	655,723	1,022,285
Allowance	0	0
Securities held to maturity
Amortized Cost	507,658	543,351
Gross Unrealized Gains	129	704
Gross Unrealized Losses	(74,405)	(67,827)
Fair Value	433,382	476,228
Securities held to maturity, Allowance	64	68	$ 91	$ 105
Marketable equity securities, Amortized Cost	655	15,035
Marketable equity securities, Gross Unrealized Gains	67	0
Marketable equity securities, Gross Unrealized Losses	(67)	(2,006)
Marketable equity securities, Fair Value	655	13,029
Amortized Cost	1,306,164	1,769,598
Gross Unrealized Gains	389	1,302
Gross Unrealized Losses	(216,793)	(259,358)
Fair Value	1,089,760	1,511,542
Allowance	64	68
U.S Treasuries
Securities available for sale
Amortized Cost	6,986	7,980
Gross Unrealized Gains	3	1
Gross Unrealized Losses	0	0
Fair Value	6,989	7,981
Allowance	0	0
Municipal bonds and obligations
Securities available for sale
Amortized Cost	63,952	64,788
Gross Unrealized Gains	10	494
Gross Unrealized Losses	(3,098)	(1,429)
Fair Value	60,864	63,853
Allowance	0	0
Securities held to maturity
Amortized Cost	235,883	251,046
Gross Unrealized Gains	129	698
Gross Unrealized Losses	(22,619)	(16,987)
Fair Value	213,393	234,757
Securities held to maturity, Allowance	44	48	66	70
Agency collateralized mortgage obligations
Securities available for sale
Amortized Cost	328,569	426,986
Gross Unrealized Gains	146	0
Gross Unrealized Losses	(64,153)	(79,112)
Fair Value	264,562	347,874
Allowance	0	0
Securities held to maturity
Amortized Cost	101,163	112,929
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(17,884)	(18,360)
Fair Value	83,279	94,569
Securities held to maturity, Allowance	0	0
Agency mortgage-backed securities
Securities available for sale
Amortized Cost	273,969	492,633
Gross Unrealized Gains	4	2
Gross Unrealized Losses	(53,733)	(75,155)
Fair Value	220,240	417,480
Allowance	0	0
Securities held to maturity
Amortized Cost	43,644	47,379
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(8,707)	(8,052)
Fair Value	34,937	39,327
Securities held to maturity, Allowance	0	0
Agency commercial mortgage-backed securities
Securities available for sale
Amortized Cost	85,686	174,879
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(18,975)	(29,553)
Fair Value	66,711	145,326
Allowance	0	0
Securities held to maturity
Amortized Cost	125,547	130,169
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(25,153)	(24,368)
Fair Value	100,394	105,801
Securities held to maturity, Allowance	0	0
Corporate bonds
Securities available for sale
Amortized Cost	38,689	43,291
Gross Unrealized Gains	30	34
Gross Unrealized Losses	(2,362)	(4,210)
Fair Value	36,357	39,115
Allowance	0	0
Tax advantaged economic development bonds
Securities held to maturity
Amortized Cost	1,144	1,540
Gross Unrealized Gains	0	6
Gross Unrealized Losses	(42)	(60)
Fair Value	1,102	1,486
Securities held to maturity, Allowance	20	20	$ 25	$ 35
Other bonds and obligations
Securities available for sale
Amortized Cost		655
Gross Unrealized Gains		67
Gross Unrealized Losses		(66)
Fair Value		656
Allowance		0
Securities held to maturity
Amortized Cost	277	288
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	277	288
Securities held to maturity, Allowance	$ 0	$ 0

SECURITIES - Narrative (Details

SECURITIES - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Investment Holdings [Line Items]
Proceeds from sales of securities available for sale | $	$ 361,871	$ 267,199	$ 149,994
Municipal bonds and obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	77
Number of securities	91
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage	5.20%
Number of HTM investment securities in unrealized loss positions	137
Number of securities in the portfolio of HTM	159
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	10.90%
Agency collateralized mortgage obligations
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	41
Number of securities	43
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage	20.70%
Number of HTM investment securities in unrealized loss positions	12
Number of securities in the portfolio of HTM	12
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	17.70%
Agency commercial mortgage-backed securities
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	28
Number of securities	28
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage	20.30%
Number of HTM investment securities in unrealized loss positions	17
Number of securities in the portfolio of HTM	17
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	20%
Corporate bonds
Investment Holdings [Line Items]
Available-for-sale, securities in unrealized loss positions	12
Number of securities	14
Debt securities, continuous unrealized loss position, qualitative disclosure, aggregate losses percentage	6.80%
Tax advantaged economic development bonds
Investment Holdings [Line Items]
Number of HTM investment securities in unrealized loss positions	2
Number of securities in the portfolio of HTM	2
Aggregate unrealized losses as a percentage of the amortized cost of the securities in unrealized loss positions	3.70%
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent, Before Reclassification
Investment Holdings [Line Items]
Other accumulated comprehensive (loss), before tax: | $	$ 142,100	188,900
Net unrealized holding (loss) on AFS securities
Investment Holdings [Line Items]
Other accumulated comprehensive (loss), before tax: | $	(142,127)	(188,927)
Income tax benefit | $	$ 37,716	$ 49,401

SECURITIES - Schedule of Debt S

SECURITIES - Schedule of Debt Securities, Held to Maturity, Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 68	$ 91	$ 105
Provision expense/(benefit) for credit losses	(4)	(23)	(14)
Ending balance	64	68	91
Municipal bonds and obligations
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	48	66	70
Provision expense/(benefit) for credit losses	(4)	(18)	(4)
Ending balance	44	48	66
Tax advantaged economic development bonds
Debt Securities, Held-to-maturity, Allowance for Credit Loss [Roll Forward]
Beginning balance	20	25	35
Provision expense/(benefit) for credit losses	0	(5)	(10)
Ending balance	$ 20	$ 20	$ 25

SECURITIES - Schedule of Amorti

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	Dec. 31, 2024	Dec. 31, 2023
Available for sale, Amortized Cost
Within 1 year	$ 7,640
Over 1 year to 5 years	21,117
Over 5 years to 10 years	47,244
Over 10 years	33,626
Total bonds and obligations	109,627
Mortgage-backed securities	688,224
Amortized Cost	797,851	$ 1,211,212
Available for sale, Fair Value
Within 1 year	7,640
Over 1 year to 5 years	20,782
Over 5 years to 10 years	44,631
Over 10 years	31,157
Total bonds and obligations	104,210
Mortgage-backed securities	551,513
Fair Value	655,723	1,022,285
Held to maturity, Amortized Cost
Within 1 year	346
Over 1 year to 5 years	2,980
Over 5 years to 10 years	54,191
Over 10 years	179,787
Total bonds and obligations	237,304
Mortgage-backed securities	270,354
Amortized Cost	507,658	543,351
Held to maturity, Fair Value
Within 1 year	346
Over 1 year to 5 years	2,930
Over 5 years to 10 years	53,032
Over 10 years	158,464
Total bonds and obligations	214,772
Mortgage-backed securities	218,610
Fair Value	$ 433,382	$ 476,228

SECURITIES - Schedule of Amor_2

SECURITIES - Schedule of Amortized Cost and Fair Values of Pledged Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Amortized Cost
Securities pledged to swap counterparties	$ 9,574	$ 9,780
Securities pledged for municipal deposits	286,183	289,740
Total	295,757	299,520
Fair Value
Securities pledged to swap counterparties	9,078	9,633
Securities pledged for municipal deposits	218,665	250,979
Total	$ 227,743	$ 260,612

SECURITIES - Schedule of Compon

SECURITIES - Schedule of Components of Net Realized Gains and Losses on the Sale of AFS Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Gross recognized gains	$ 21,488	$ 1,199	$ 72
Gross recognized losses	(71,566)	(26,083)	(2,009)
Net recognized (losses)	$ (50,078)	$ (24,884)	$ (1,937)

SECURITIES - Schedule of Secu_2

SECURITIES - Schedule of Securities with Unrealized Losses, Segregated by the Duration of their Continuous Unrealized Loss Positions (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	$ 1,289	$ 534
Less Than Twelve Months, Fair Value	79,959	15,891
Over Twelve Months, Gross Unrealized Losses	141,032	188,991
Over Twelve Months, Fair Value	541,025	965,075
Total Gross Unrealized Losses	142,321	189,525
Total Fair Value	620,984	980,966
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	1,614	230
Less Than Twelve Months, Fair Value	73,453	28,916
Over Twelve Months, Gross Unrealized Losses	72,791	67,597
Over Twelve Months, Fair Value	330,940	332,661
Total Gross Unrealized Losses	74,405	67,827
Total Fair Value	404,393	361,577
Securities available for sale and held to maturity
Less Than Twelve Months, Gross Unrealized Losses	2,903	764
Less Than Twelve Months, Fair Value	153,412	44,807
Over Twelve Months, Gross Unrealized Losses	213,823	256,588
Over Twelve Months, Fair Value	871,965	1,297,736
Total Gross Unrealized Losses	216,726	257,352
Total Fair Value	1,025,377	1,342,543
Municipal bonds and obligations
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	773	76
Less Than Twelve Months, Fair Value	30,299	9,326
Over Twelve Months, Gross Unrealized Losses	2,325	1,353
Over Twelve Months, Fair Value	25,916	22,739
Total Gross Unrealized Losses	3,098	1,429
Total Fair Value	56,215	32,065
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	1,614	229
Less Than Twelve Months, Fair Value	73,453	28,895
Over Twelve Months, Gross Unrealized Losses	21,005	16,758
Over Twelve Months, Fair Value	111,228	92,063
Total Gross Unrealized Losses	22,619	16,987
Total Fair Value	184,681	120,958
Agency collateralized mortgage obligations
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	403	0
Less Than Twelve Months, Fair Value	45,954	0
Over Twelve Months, Gross Unrealized Losses	63,750	79,112
Over Twelve Months, Fair Value	200,038	347,874
Total Gross Unrealized Losses	64,153	79,112
Total Fair Value	245,992	347,874
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	0	1
Less Than Twelve Months, Fair Value	0	21
Over Twelve Months, Gross Unrealized Losses	17,884	18,359
Over Twelve Months, Fair Value	83,279	94,548
Total Gross Unrealized Losses	17,884	18,360
Total Fair Value	83,279	94,569
Agency mortgage-backed securities
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	113	1
Less Than Twelve Months, Fair Value	3,706	22
Over Twelve Months, Gross Unrealized Losses	53,620	75,154
Over Twelve Months, Fair Value	215,822	417,151
Total Gross Unrealized Losses	53,733	75,155
Total Fair Value	219,528	417,173
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	0	0
Less Than Twelve Months, Fair Value	0	0
Over Twelve Months, Gross Unrealized Losses	8,707	8,052
Over Twelve Months, Fair Value	34,937	39,327
Total Gross Unrealized Losses	8,707	8,052
Total Fair Value	34,937	39,327
Agency commercial mortgage-backed securities
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	18,975	29,553
Over Twelve Months, Fair Value	66,711	145,326
Total Gross Unrealized Losses	18,975	29,553
Total Fair Value	66,711	145,326
Securities held to maturity
Less Than Twelve Months, Gross Unrealized Losses	0	0
Less Than Twelve Months, Fair Value	0	0
Over Twelve Months, Gross Unrealized Losses	25,153	24,368
Over Twelve Months, Fair Value	100,394	105,801
Total Gross Unrealized Losses	25,153	24,368
Total Fair Value	100,394	105,801
Corporate bonds
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses	0	457
Less Than Twelve Months, Fair Value	0	6,543
Over Twelve Months, Gross Unrealized Losses	2,362	3,753
Over Twelve Months, Fair Value	32,538	31,690
Total Gross Unrealized Losses	2,362	4,210
Total Fair Value	32,538	38,233
Other bonds and obligations
Securities available for sale
Less Than Twelve Months, Gross Unrealized Losses		0
Less Than Twelve Months, Fair Value		0
Over Twelve Months, Gross Unrealized Losses		66
Over Twelve Months, Fair Value		295
Total Gross Unrealized Losses		66
Total Fair Value		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	0
Less Than Twelve Months, Fair Value	0	0
Over Twelve Months, Gross Unrealized Losses	42	60
Over Twelve Months, Fair Value	1,102	922
Total Gross Unrealized Losses	42	60
Total Fair Value	$ 1,102	$ 922

LOANS AND RELATED ALLOWANCE F_3

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Allowance for loan losses
Total loans	$ 9,384,994	$ 9,039,686
Allowance for credit losses on unfunded commitments	114,700	105,357	$ 96,270	$ 106,094
Net loans	9,270,294	8,934,329
Construction and commercial multifamily | Construction
Allowance for loan losses
Total loans	726,344	640,371
Allowance for credit losses on unfunded commitments	4,463	2,885	1,227	3,206
Construction and commercial multifamily | Commercial multifamily
Allowance for loan losses
Total loans	636,805	599,145
Allowance for credit losses on unfunded commitments	4,084	2,475	1,810	6,120
Commercial real estate loans | Commercial real estate owner occupied
Allowance for loan losses
Total loans	695,330	628,646
Allowance for credit losses on unfunded commitments	11,303	9,443	10,739	12,752
Commercial real estate loans | Commercial real estate non-owner occupied
Allowance for loan losses
Total loans	2,769,447	2,606,409
Allowance for credit losses on unfunded commitments	38,520	38,221	30,724	32,106
Commercial and industrial loans
Allowance for loan losses
Total loans	1,439,175	1,359,249
Allowance for credit losses on unfunded commitments	25,549	18,602	18,743	22,584
Residential real estate | Residential real estate
Allowance for loan losses
Total loans	2,771,769	2,760,312
Allowance for credit losses on unfunded commitments	22,479	19,622	18,666	22,406
Consumer loans | Home equity
Allowance for loan losses
Total loans	230,365	224,223
Allowance for credit losses on unfunded commitments	2,392	2,015	2,173	4,006
Consumer loans | Consumer other
Allowance for loan losses
Total loans	115,759	221,331
Allowance for credit losses on unfunded commitments	$ 5,910	$ 12,094	$ 12,188	$ 2,914

LOANS AND RELATED ALLOWANCE F_4

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance for loan losses
Net loans	$ 9,270,294	$ 8,934,329
Payments to acquire loans and leases held-for-investment	76,000	649,000	$ 718,000
Proceeds from sale, loan and lease, held-for-investment	178,000	255,000	366,000
(Gain) on SBA loan sales	12,648	10,334	$ 12,494
Total loans	9,384,994	9,039,686
Other liabilities	292,686	278,630
Loans receivable, related parties	1,600	800
Commitment to lend	8,800	7,800
Related Party
Allowance for loan losses
Other liabilities	2,200	1,500
Asset Pledged as Collateral
Allowance for loan losses
Loans pledged as collateral	1,600,000	1,300,000
Residential real estate | Collateralized Residential Mortgage Loans, In Process of Foreclosure
Allowance for loan losses
Total loans	1,100	3,800
Commercial and industrial loans
Allowance for loan losses
Total loans	1,439,175	1,359,249
Financing receivable, nonaccrual, medallion loans, fair value	300	400
Financing receivable, nonaccrual, medallion loans, contractual balance	6,500	8,800
Total Loans | Credit Concentration Risk | Non-Residential
Allowance for loan losses
Total loans	$ 2,300,000	$ 2,200,000
Concentration risk, percentage	24.60%	24%
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Allowance for loan losses
Net loans	$ 1,400	$ 3,000

LOANS AND RELATED ALLOWANCE F_5

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Credit Losses for Loans, Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 105,357	$ 96,270	$ 106,094
Charge-offs	(20,525)	(29,257)	(28,058)
Recoveries	5,865	6,723	7,220
Provision for Credit Losses	24,003	32,022	11,014
Balance at End of Period	114,700	105,357	$ 96,270
Accounting Standards Update [Extensible Enumeration]			Accounting Standards Update 2022-02 [Member]
Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period		(401)
Balance at End of Period			$ (401)
Construction and commercial multifamily | Construction
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,885	1,227	3,206
Charge-offs	0	(1)	0
Recoveries	0	0	0
Provision for Credit Losses	1,578	1,659	(1,979)
Balance at End of Period	4,463	2,885	1,227
Construction and commercial multifamily | Construction | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period		0
Balance at End of Period			0
Construction and commercial multifamily | Commercial multifamily
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,475	1,810	6,120
Charge-offs	(1,164)	0	(94)
Recoveries	0	6	112
Provision for Credit Losses	2,773	659	(4,328)
Balance at End of Period	4,084	2,475	1,810
Construction and commercial multifamily | Commercial multifamily | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period		0
Balance at End of Period			0
Commercial real estate loans | Commercial real estate owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	9,443	10,739	12,752
Charge-offs	(403)	(489)	(687)
Recoveries	231	1,139	702
Provision for Credit Losses	2,032	(1,970)	(2,028)
Balance at End of Period	11,303	9,443	10,739
Commercial real estate loans | Commercial real estate owner occupied | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period		24
Balance at End of Period			24
Commercial real estate loans | Commercial real estate non-owner occupied
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	38,221	30,724	32,106
Charge-offs	(36)	(65)	(5,894)
Recoveries	249	204	1,549
Provision for Credit Losses	86	7,358	2,963
Balance at End of Period	38,520	38,221	30,724
Commercial real estate loans | Commercial real estate non-owner occupied | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period		0
Balance at End of Period			0
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	18,602	18,743	22,584
Charge-offs	(7,820)	(17,872)	(18,447)
Recoveries	1,984	2,659	3,050
Provision for Credit Losses	12,783	15,095	11,556
Balance at End of Period	25,549	18,602	18,743
Commercial and industrial loans | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period		(23)
Balance at End of Period			(23)
Residential real estate | Residential real estate
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	19,622	18,666	22,406
Charge-offs	(76)	(313)	(555)
Recoveries	1,425	610	1,019
Provision for Credit Losses	1,508	657	(4,204)
Balance at End of Period	22,479	19,622	18,666
Residential real estate | Residential real estate | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period		2
Balance at End of Period			2
Consumer loans | Home equity
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	2,015	2,173	4,006
Charge-offs	0	(88)	(166)
Recoveries	250	519	283
Provision for Credit Losses	127	(589)	(1,950)
Balance at End of Period	2,392	2,015	2,173
Consumer loans | Home equity | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period		0
Balance at End of Period			0
Consumer loans | Consumer other
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	12,094	12,188	2,914
Charge-offs	(11,026)	(10,429)	(2,215)
Recoveries	1,726	1,586	505
Provision for Credit Losses	3,116	9,153	10,984
Balance at End of Period	$ 5,910	12,094	12,188
Consumer loans | Consumer other | Impact of ASC 326 adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period		$ (404)
Balance at End of Period			$ (404)

LOANS AND RELATED ALLOWANCE F_6

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Allowance for Credit Losses on Unfunded Loan Commitments, Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, allowance for credit losses	$ 9,256	$ 8,588	$ 7,043
Expense for credit losses	565	668	1,545
Ending balance, allowance for credit losses	$ 9,821	$ 9,256	$ 8,588

LOANS AND RELATED ALLOWANCE F_7

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Loans by Risk Rating (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current period gross write-offs
Total	$ 20,525	$ 29,257	$ 28,058
Payment performance
Total	9,384,994	9,039,686
Special Mention | Performing
Payment performance
Total	133,408	91,502
Substandard | Performing
Payment performance
Total	88,009	131,689
Commercial loans | Construction
Current period gross write-offs
Write-offs, originated in current year	0	0
Write-offs, originated in prior year	0	0
Write-offs, originated two years before current year	0	0
Write-offs, originated three years before current year	0	0
Write-offs, originated four years before current year	0	0
Write-offs, originated five years before current year	0	1
Write-offs, Revolving Loans Amortized Cost Basis	0	0
Write-offs, Revolving Loans Converted to Term	0	0
Total	0	1	0
Payment performance
Loans originated in current fiscal year	40,549	104,507
Loans originated in fiscal year before current fiscal year	138,925	346,419
Loans originated two years before current fiscal year	452,224	156,626
Loans originated three years before current fiscal year	93,310	29,176
Loans originated four years before current fiscal year	0	2,545
Prior	1,336	1,098
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	726,344	640,371
Commercial loans | Construction | Pass
Payment performance
Loans originated in current fiscal year	40,549	104,507
Loans originated in fiscal year before current fiscal year	138,925	346,419
Loans originated two years before current fiscal year	436,850	138,802
Loans originated three years before current fiscal year	74,718	29,176
Loans originated four years before current fiscal year	0	2,545
Prior	1,336	1,098
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term		0
Total	692,378	622,547
Commercial loans | Construction | Special Mention
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	15,374	512
Loans originated three years before current fiscal year	0	0
Loans originated four years before current fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	15,374	512
Commercial loans | Construction | Substandard
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	0	17,312
Loans originated three years before current fiscal year	18,592	0
Loans originated four years before current fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	18,592	17,312
Commercial loans | Commercial multifamily
Current period gross write-offs
Write-offs, originated in current year	0	0
Write-offs, originated in prior year	0	0
Write-offs, originated two years before current year	0	0
Write-offs, originated three years before current year	0	0
Write-offs, originated four years before current year	0	0
Write-offs, originated five years before current year	1,164	0
Write-offs, Revolving Loans Amortized Cost Basis	0	0
Write-offs, Revolving Loans Converted to Term	0	0
Total	1,164	0	94
Payment performance
Loans originated in current fiscal year	85,160	16,020
Loans originated in fiscal year before current fiscal year	17,598	216,477
Loans originated two years before current fiscal year	203,001	57,059
Loans originated three years before current fiscal year	52,235	29,120
Loans originated four years before current fiscal year	40,688	94,733
Prior	237,695	185,359
Revolving Loans Amortized Cost Basis	428	377
Revolving Loans Converted to Term	0	0
Total	636,805	599,145
Commercial loans | Commercial multifamily | Pass
Payment performance
Loans originated in current fiscal year	85,160	16,020
Loans originated in fiscal year before current fiscal year	17,598	216,477
Loans originated two years before current fiscal year	203,001	56,817
Loans originated three years before current fiscal year	52,235	26,566
Loans originated four years before current fiscal year	38,211	94,733
Prior	233,145	179,923
Revolving Loans Amortized Cost Basis	428	377
Revolving Loans Converted to Term	0	0
Total	629,778	590,913
Commercial loans | Commercial multifamily | Special Mention
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	0	0
Loans originated three years before current fiscal year	0	0
Loans originated four years before current fiscal year	0	0
Prior	421	0
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	421	0
Commercial loans | Commercial multifamily | Substandard
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	0	242
Loans originated three years before current fiscal year	0	2,554
Loans originated four years before current fiscal year	2,477	0
Prior	4,129	5,436
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	6,606	8,232
Commercial real estate loans | Commercial real estate owner occupied
Current period gross write-offs
Write-offs, originated in current year	0	0
Write-offs, originated in prior year	0	0
Write-offs, originated two years before current year	45	0
Write-offs, originated three years before current year	232	380
Write-offs, originated four years before current year	0	0
Write-offs, originated five years before current year	126	109
Write-offs, Revolving Loans Amortized Cost Basis	0	0
Write-offs, Revolving Loans Converted to Term	0	0
Total	403	489	687
Payment performance
Loans originated in current fiscal year	123,934	97,271
Loans originated in fiscal year before current fiscal year	92,906	120,327
Loans originated two years before current fiscal year	114,968	122,656
Loans originated three years before current fiscal year	102,747	38,183
Loans originated four years before current fiscal year	67,910	75,096
Prior	189,918	172,460
Revolving Loans Amortized Cost Basis	2,947	2,653
Revolving Loans Converted to Term	0	0
Total	695,330	628,646
Commercial real estate loans | Commercial real estate owner occupied | Pass
Payment performance
Loans originated in current fiscal year	122,082	97,271
Loans originated in fiscal year before current fiscal year	83,269	120,327
Loans originated two years before current fiscal year	112,718	122,151
Loans originated three years before current fiscal year	94,937	37,914
Loans originated four years before current fiscal year	67,652	70,393
Prior	177,684	165,224
Revolving Loans Amortized Cost Basis	2,947	2,653
Revolving Loans Converted to Term	0	0
Total	661,289	615,933
Commercial real estate loans | Commercial real estate owner occupied | Special Mention
Payment performance
Loans originated in current fiscal year	1,852	0
Loans originated in fiscal year before current fiscal year	9,637	0
Loans originated two years before current fiscal year	1,839	424
Loans originated three years before current fiscal year	7,215	222
Loans originated four years before current fiscal year	221	0
Prior	5,207	788
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	25,971	1,434
Commercial real estate loans | Commercial real estate owner occupied | Substandard
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	411	81
Loans originated three years before current fiscal year	595	47
Loans originated four years before current fiscal year	37	4,703
Prior	7,027	6,448
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	8,070	11,279
Commercial real estate loans | Commercial real estate non-owner occupied
Current period gross write-offs
Write-offs, originated in current year	0	0
Write-offs, originated in prior year	0	0
Write-offs, originated two years before current year	0	0
Write-offs, originated three years before current year	0	0
Write-offs, originated four years before current year	0	0
Write-offs, originated five years before current year	36	65
Write-offs, Revolving Loans Amortized Cost Basis	0	0
Write-offs, Revolving Loans Converted to Term	0	0
Total	36	65	5,894
Payment performance
Loans originated in current fiscal year	246,619	404,687
Loans originated in fiscal year before current fiscal year	426,882	591,897
Loans originated two years before current fiscal year	591,931	385,247
Loans originated three years before current fiscal year	417,279	142,177
Loans originated four years before current fiscal year	142,962	310,818
Prior	934,057	767,030
Revolving Loans Amortized Cost Basis	8,217	4,553
Revolving Loans Converted to Term	1,500	0
Total	2,769,447	2,606,409
Commercial real estate loans | Commercial real estate non-owner occupied | Pass
Payment performance
Loans originated in current fiscal year	246,619	404,687
Loans originated in fiscal year before current fiscal year	426,882	591,897
Loans originated two years before current fiscal year	591,563	385,247
Loans originated three years before current fiscal year	413,459	135,134
Loans originated four years before current fiscal year	142,739	277,870
Prior	874,454	736,566
Revolving Loans Amortized Cost Basis	5,961	4,553
Revolving Loans Converted to Term	1,500	0
Total	2,703,177	2,535,954
Commercial real estate loans | Commercial real estate non-owner occupied | Special Mention
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	0	0
Loans originated three years before current fiscal year	1,038	229
Loans originated four years before current fiscal year	223	19,465
Prior	40,763	726
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	42,024	20,420
Commercial real estate loans | Commercial real estate non-owner occupied | Substandard
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	368	0
Loans originated three years before current fiscal year	2,782	6,814
Loans originated four years before current fiscal year	0	13,483
Prior	18,840	29,738
Revolving Loans Amortized Cost Basis	2,256	0
Revolving Loans Converted to Term	0	0
Total	24,246	50,035
Commercial and industrial loans
Current period gross write-offs
Write-offs, originated in current year	324	0
Write-offs, originated in prior year	868	1,154
Write-offs, originated two years before current year	1,564	863
Write-offs, originated three years before current year	940	2,763
Write-offs, originated four years before current year	816	1,496
Write-offs, originated five years before current year	1,745	9,283
Write-offs, Revolving Loans Amortized Cost Basis	1,563	2,313
Write-offs, Revolving Loans Converted to Term	0	0
Total	7,820	17,872	18,447
Payment performance
Loans originated in current fiscal year	205,995	143,904
Loans originated in fiscal year before current fiscal year	94,696	227,036
Loans originated two years before current fiscal year	150,158	133,628
Loans originated three years before current fiscal year	105,571	72,478
Loans originated four years before current fiscal year	21,247	43,832
Prior	127,652	126,661
Revolving Loans Amortized Cost Basis	722,073	611,710
Revolving Loans Converted to Term	11,783	0
Total	1,439,175	1,359,249
Commercial and industrial loans | Pass
Payment performance
Loans originated in current fiscal year	205,831	142,946
Loans originated in fiscal year before current fiscal year	91,152	203,126
Loans originated two years before current fiscal year	126,327	118,191
Loans originated three years before current fiscal year	93,441	69,722
Loans originated four years before current fiscal year	18,613	39,437
Prior	112,620	112,770
Revolving Loans Amortized Cost Basis	689,036	554,153
Revolving Loans Converted to Term	11,478	0
Total	1,348,498	1,240,345
Commercial and industrial loans | Special Mention
Payment performance
Loans originated in current fiscal year	164	526
Loans originated in fiscal year before current fiscal year	1,122	23,149
Loans originated two years before current fiscal year	22,091	3,735
Loans originated three years before current fiscal year	1,305	1,621
Loans originated four years before current fiscal year	1,705	610
Prior	2,957	1,353
Revolving Loans Amortized Cost Basis	16,723	35,244
Revolving Loans Converted to Term	100	0
Total	46,167	66,238
Commercial and industrial loans | Substandard
Payment performance
Loans originated in current fiscal year	0	432
Loans originated in fiscal year before current fiscal year	2,422	761
Loans originated two years before current fiscal year	1,740	11,702
Loans originated three years before current fiscal year	10,825	1,135
Loans originated four years before current fiscal year	929	3,785
Prior	12,075	12,538
Revolving Loans Amortized Cost Basis	16,314	22,313
Revolving Loans Converted to Term	205	0
Total	44,510	52,666
Residential real estate | Residential real estate
Current period gross write-offs
Write-offs, originated in current year	0	0
Write-offs, originated in prior year	0	50
Write-offs, originated two years before current year	0	0
Write-offs, originated three years before current year	0	50
Write-offs, originated four years before current year	0	174
Write-offs, originated five years before current year	76	39
Write-offs, Revolving Loans Amortized Cost Basis	0	0
Write-offs, Revolving Loans Converted to Term	0	0
Total	76	313	555
Payment performance
Loans originated in current fiscal year	291,826	599,124
Loans originated in fiscal year before current fiscal year	531,873	973,160
Loans originated two years before current fiscal year	909,689	267,231
Loans originated three years before current fiscal year	248,207	88,681
Loans originated four years before current fiscal year	78,080	67,551
Prior	711,958	764,484
Revolving Loans Amortized Cost Basis	136	81
Revolving Loans Converted to Term	0	0
Total	2,771,769	2,760,312
Residential real estate | Residential real estate | Pass
Payment performance
Loans originated in current fiscal year	291,826	599,124
Loans originated in fiscal year before current fiscal year	531,873	973,031
Loans originated two years before current fiscal year	908,916	266,055
Loans originated three years before current fiscal year	247,551	88,302
Loans originated four years before current fiscal year	77,706	66,837
Prior	703,572	755,372
Revolving Loans Amortized Cost Basis	136	81
Revolving Loans Converted to Term	0	0
Total	2,761,580	2,748,802
Residential real estate | Residential real estate | Special Mention
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	649	0
Loans originated three years before current fiscal year	468	0
Loans originated four years before current fiscal year	0	140
Prior	1,501	664
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	2,618	804
Residential real estate | Residential real estate | Substandard
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	129
Loans originated two years before current fiscal year	124	1,176
Loans originated three years before current fiscal year	188	379
Loans originated four years before current fiscal year	374	574
Prior	6,885	8,448
Revolving Loans Amortized Cost Basis	0	0
Revolving Loans Converted to Term	0	0
Total	7,571	10,706
Consumer loans | Home equity
Current period gross write-offs
Write-offs, originated in current year	0	0
Write-offs, originated in prior year	0	0
Write-offs, originated two years before current year	0	0
Write-offs, originated three years before current year	0	70
Write-offs, originated four years before current year	0	0
Write-offs, originated five years before current year	0	0
Write-offs, Revolving Loans Amortized Cost Basis	0	18
Write-offs, Revolving Loans Converted to Term	0	0
Total	0	88	166
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	0	0
Loans originated three years before current fiscal year	0	439
Loans originated four years before current fiscal year	423	0
Prior	2,529	2,614
Revolving Loans Amortized Cost Basis	227,413	221,170
Revolving Loans Converted to Term	0	0
Total	230,365	224,223
Consumer loans | Home equity | Performing
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	0	0
Loans originated three years before current fiscal year	0	439
Loans originated four years before current fiscal year	423	0
Prior	2,529	2,614
Revolving Loans Amortized Cost Basis	226,822	220,209
Revolving Loans Converted to Term	0	0
Total	229,774	223,262
Consumer loans | Home equity | Nonperforming
Payment performance
Loans originated in current fiscal year	0	0
Loans originated in fiscal year before current fiscal year	0	0
Loans originated two years before current fiscal year	0	0
Loans originated three years before current fiscal year	0	0
Loans originated four years before current fiscal year	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	591	961
Revolving Loans Converted to Term	0	0
Total	591	961
Consumer loans | Consumer other
Current period gross write-offs
Write-offs, originated in current year	0	109
Write-offs, originated in prior year	214	8,843
Write-offs, originated two years before current year	9,723	1,149
Write-offs, originated three years before current year	760	11
Write-offs, originated four years before current year	2	78
Write-offs, originated five years before current year	113	239
Write-offs, Revolving Loans Amortized Cost Basis	214	0
Write-offs, Revolving Loans Converted to Term	0	0
Total	11,026	10,429	$ 2,215
Payment performance
Loans originated in current fiscal year	30,524	49,665
Loans originated in fiscal year before current fiscal year	33,850	108,388
Loans originated two years before current fiscal year	23,440	19,726
Loans originated three years before current fiscal year	10,193	5,869
Loans originated four years before current fiscal year	3,718	7,164
Prior	3,932	19,871
Revolving Loans Amortized Cost Basis	10,102	10,648
Revolving Loans Converted to Term	0	0
Total	115,759	221,331
Consumer loans | Consumer other | Performing
Payment performance
Loans originated in current fiscal year	30,524	49,588
Loans originated in fiscal year before current fiscal year	33,849	108,284
Loans originated two years before current fiscal year	23,397	19,679
Loans originated three years before current fiscal year	10,072	5,843
Loans originated four years before current fiscal year	3,718	7,054
Prior	3,825	19,587
Revolving Loans Amortized Cost Basis	10,066	10,614
Revolving Loans Converted to Term	0	0
Total	115,451	220,649
Consumer loans | Consumer other | Nonperforming
Payment performance
Loans originated in current fiscal year	0	77
Loans originated in fiscal year before current fiscal year	1	104
Loans originated two years before current fiscal year	43	47
Loans originated three years before current fiscal year	121	26
Loans originated four years before current fiscal year	0	110
Prior	107	284
Revolving Loans Amortized Cost Basis	36	34
Revolving Loans Converted to Term	0	0
Total	$ 308	$ 682

LOANS AND RELATED ALLOWANCE F_8

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Total Loans Rated Special Mention or Lower (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Allowance for loan losses
Financing receivable, before allowance for credit loss	$ 9,384,994	$ 9,039,686
Total Criticized | Performing
Allowance for loan losses
Financing receivable, before allowance for credit loss	245,864	244,598
Total Classified | Performing
Allowance for loan losses
Financing receivable, before allowance for credit loss	112,456	153,096
Nonaccrual | Performing
Allowance for loan losses
Financing receivable, before allowance for credit loss	24,447	21,407
Substandard Accruing | Performing
Allowance for loan losses
Financing receivable, before allowance for credit loss	88,009	131,689
Special Mention | Performing
Allowance for loan losses
Financing receivable, before allowance for credit loss	$ 133,408	$ 91,502

LOANS AND RELATED ALLOWANCE F_9

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Past Due Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Allowance for loan losses
Total loans	$ 9,384,994	$ 9,039,686
Commercial loans | Construction
Allowance for loan losses
Total loans	726,344	640,371
Commercial loans | Commercial multifamily
Allowance for loan losses
Total loans	636,805	599,145
Commercial real estate loans | Commercial real estate owner occupied
Allowance for loan losses
Total loans	695,330	628,646
Commercial real estate loans | Commercial real estate non-owner occupied
Allowance for loan losses
Total loans	2,769,447	2,606,409
Commercial and industrial loans
Allowance for loan losses
Total loans	1,439,175	1,359,249
Commercial and industrial loans | Commercial and industrial
Allowance for loan losses
Total loans	1,439,175
Residential real estate | Residential real estate
Allowance for loan losses
Total loans	2,771,769	2,760,312
Consumer loans | Home equity
Allowance for loan losses
Total loans	230,365	224,223
Consumer loans | Consumer other
Allowance for loan losses
Total loans	115,759	221,331
Total Past Due
Allowance for loan losses
Total loans	49,148	49,085
Total Past Due | Commercial loans | Construction
Allowance for loan losses
Total loans	594	0
Total Past Due | Commercial loans | Commercial multifamily
Allowance for loan losses
Total loans	4,550	5,623
Total Past Due | Commercial real estate loans | Commercial real estate owner occupied
Allowance for loan losses
Total loans	3,270	1,671
Total Past Due | Commercial real estate loans | Commercial real estate non-owner occupied
Allowance for loan losses
Total loans	3,827	4,188
Total Past Due | Commercial and industrial loans
Allowance for loan losses
Total loans		12,207
Total Past Due | Commercial and industrial loans | Commercial and industrial
Allowance for loan losses
Total loans	13,552
Total Past Due | Residential real estate | Residential real estate
Allowance for loan losses
Total loans	18,110	17,299
Total Past Due | Consumer loans | Home equity
Allowance for loan losses
Total loans	2,639	2,486
Total Past Due | Consumer loans | Consumer other
Allowance for loan losses
Total loans	2,606	5,611
30-59 Days Past Due
Allowance for loan losses
Total loans	13,897	17,644
30-59 Days Past Due | Commercial loans | Construction
Allowance for loan losses
Total loans	0	0
30-59 Days Past Due | Commercial loans | Commercial multifamily
Allowance for loan losses
Total loans	421	5,436
30-59 Days Past Due | Commercial real estate loans | Commercial real estate owner occupied
Allowance for loan losses
Total loans	484	581
30-59 Days Past Due | Commercial real estate loans | Commercial real estate non-owner occupied
Allowance for loan losses
Total loans	295	139
30-59 Days Past Due | Commercial and industrial loans
Allowance for loan losses
Total loans		2,749
30-59 Days Past Due | Commercial and industrial loans | Commercial and industrial
Allowance for loan losses
Total loans	2,613
30-59 Days Past Due | Residential real estate | Residential real estate
Allowance for loan losses
Total loans	8,571	5,669
30-59 Days Past Due | Consumer loans | Home equity
Allowance for loan losses
Total loans	629	707
30-59 Days Past Due | Consumer loans | Consumer other
Allowance for loan losses
Total loans	884	2,363
60-89 Days Past Due
Allowance for loan losses
Total loans	4,387	4,496
60-89 Days Past Due | Commercial loans | Construction
Allowance for loan losses
Total loans	0	0
60-89 Days Past Due | Commercial loans | Commercial multifamily
Allowance for loan losses
Total loans	0	187
60-89 Days Past Due | Commercial real estate loans | Commercial real estate owner occupied
Allowance for loan losses
Total loans	456	286
60-89 Days Past Due | Commercial real estate loans | Commercial real estate non-owner occupied
Allowance for loan losses
Total loans	0	251
60-89 Days Past Due | Commercial and industrial loans
Allowance for loan losses
Total loans		689
60-89 Days Past Due | Commercial and industrial loans | Commercial and industrial
Allowance for loan losses
Total loans	1,116
60-89 Days Past Due | Residential real estate | Residential real estate
Allowance for loan losses
Total loans	1,969	943
60-89 Days Past Due | Consumer loans | Home equity
Allowance for loan losses
Total loans	519	498
60-89 Days Past Due | Consumer loans | Consumer other
Allowance for loan losses
Total loans	327	1,642
90 Days or Greater Past Due
Allowance for loan losses
Total loans	30,864	26,945
90 Days or Greater Past Due | Commercial loans | Construction
Allowance for loan losses
Total loans	594	0
90 Days or Greater Past Due | Commercial loans | Commercial multifamily
Allowance for loan losses
Total loans	4,129	0
90 Days or Greater Past Due | Commercial real estate loans | Commercial real estate owner occupied
Allowance for loan losses
Total loans	2,330	804
90 Days or Greater Past Due | Commercial real estate loans | Commercial real estate non-owner occupied
Allowance for loan losses
Total loans	3,532	3,798
90 Days or Greater Past Due | Commercial and industrial loans
Allowance for loan losses
Total loans		8,769
90 Days or Greater Past Due | Commercial and industrial loans | Commercial and industrial
Allowance for loan losses
Total loans	9,823
90 Days or Greater Past Due | Residential real estate | Residential real estate
Allowance for loan losses
Total loans	7,570	10,687
90 Days or Greater Past Due | Consumer loans | Home equity
Allowance for loan losses
Total loans	1,491	1,281
90 Days or Greater Past Due | Consumer loans | Consumer other
Allowance for loan losses
Total loans	1,395	1,606
Current
Allowance for loan losses
Total loans	9,335,846	8,990,601
Current | Commercial loans | Construction
Allowance for loan losses
Total loans	725,750	640,371
Current | Commercial loans | Commercial multifamily
Allowance for loan losses
Total loans	632,255	593,522
Current | Commercial real estate loans | Commercial real estate owner occupied
Allowance for loan losses
Total loans	692,060	626,975
Current | Commercial real estate loans | Commercial real estate non-owner occupied
Allowance for loan losses
Total loans	2,765,620	2,602,221
Current | Commercial and industrial loans
Allowance for loan losses
Total loans		1,347,042
Current | Commercial and industrial loans | Commercial and industrial
Allowance for loan losses
Total loans	1,425,623
Current | Residential real estate | Residential real estate
Allowance for loan losses
Total loans	2,753,659	2,743,013
Current | Consumer loans | Home equity
Allowance for loan losses
Total loans	227,726	221,737
Current | Consumer loans | Consumer other
Allowance for loan losses
Total loans	$ 113,153	$ 215,720

LOANS AND RELATED ALLOWANCE _10

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Information Pertaining to Non-accrual Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Allowance for loan losses
Nonaccrual Amortized Cost	$ 24,447	$ 21,407
Nonaccrual With No Related Allowance	24,097	8,834
Past Due 90 Days or Greater and Accruing	6,417	5,538
Interest Income Recognized on Nonaccrual	0	0
Construction and commercial multifamily | Construction
Allowance for loan losses
Nonaccrual Amortized Cost	594	0
Nonaccrual With No Related Allowance	594	0
Past Due 90 Days or Greater and Accruing	0	0
Interest Income Recognized on Nonaccrual	0	0
Construction and commercial multifamily | Commercial multifamily
Allowance for loan losses
Nonaccrual Amortized Cost	4,129	0
Nonaccrual With No Related Allowance	4,129	0
Past Due 90 Days or Greater and Accruing	0	0
Interest Income Recognized on Nonaccrual	0	0
Commercial real estate loans | Commercial real estate owner occupied
Allowance for loan losses
Nonaccrual Amortized Cost	2,330	605
Nonaccrual With No Related Allowance	2,330	285
Past Due 90 Days or Greater and Accruing	0	199
Interest Income Recognized on Nonaccrual	0	0
Commercial real estate loans | Commercial real estate non-owner occupied
Allowance for loan losses
Nonaccrual Amortized Cost	3,532	3,798
Nonaccrual With No Related Allowance	3,532	45
Past Due 90 Days or Greater and Accruing	0	0
Interest Income Recognized on Nonaccrual	0	0
Commercial and industrial loans
Allowance for loan losses
Nonaccrual Amortized Cost	8,964	8,665
Nonaccrual With No Related Allowance	8,614	5,586
Past Due 90 Days or Greater and Accruing	859	104
Interest Income Recognized on Nonaccrual	0	0
Residential real estate | Residential real estate
Allowance for loan losses
Nonaccrual Amortized Cost	3,999	6,696
Nonaccrual With No Related Allowance	3,999	2,796
Past Due 90 Days or Greater and Accruing	3,571	3,991
Interest Income Recognized on Nonaccrual	0	0
Consumer loans | Home equity
Allowance for loan losses
Nonaccrual Amortized Cost	591	961
Nonaccrual With No Related Allowance	591	122
Past Due 90 Days or Greater and Accruing	900	320
Interest Income Recognized on Nonaccrual	0	0
Consumer loans | Consumer other
Allowance for loan losses
Nonaccrual Amortized Cost	308	682
Nonaccrual With No Related Allowance	308	0
Past Due 90 Days or Greater and Accruing	1,087	924
Interest Income Recognized on Nonaccrual	$ 0	$ 0

LOANS AND RELATED ALLOWANCE _11

LOANS AND RELATED ALLOWANCE FOR CREDIT LOSSES - Schedule of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Allowance for loan losses
Nonaccrual Amortized Cost	$ 24,447	$ 21,407
Real Estate
Allowance for loan losses
Nonaccrual Amortized Cost	12,699	10,990
Investment Securities/Cash
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Other
Allowance for loan losses
Nonaccrual Amortized Cost	700	944
Construction and commercial multifamily | Construction
Allowance for loan losses
Nonaccrual Amortized Cost	594	0
Construction and commercial multifamily | Construction | Real Estate
Allowance for loan losses
Nonaccrual Amortized Cost	594	0
Construction and commercial multifamily | Construction | Investment Securities/Cash
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Construction and commercial multifamily | Construction | Other
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Construction and commercial multifamily | Commercial multifamily
Allowance for loan losses
Nonaccrual Amortized Cost	4,129	0
Construction and commercial multifamily | Commercial multifamily | Real Estate
Allowance for loan losses
Nonaccrual Amortized Cost	4,129	0
Construction and commercial multifamily | Commercial multifamily | Investment Securities/Cash
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Construction and commercial multifamily | Commercial multifamily | Other
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Commercial real estate loans | Commercial real estate owner occupied
Allowance for loan losses
Nonaccrual Amortized Cost	2,330	605
Commercial real estate loans | Commercial real estate owner occupied | Real Estate
Allowance for loan losses
Nonaccrual Amortized Cost	1,562	650
Commercial real estate loans | Commercial real estate owner occupied | Investment Securities/Cash
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Commercial real estate loans | Commercial real estate owner occupied | Other
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Commercial real estate loans | Commercial real estate non-owner occupied
Allowance for loan losses
Nonaccrual Amortized Cost	3,532	3,798
Commercial real estate loans | Commercial real estate non-owner occupied | Real Estate
Allowance for loan losses
Nonaccrual Amortized Cost	294	342
Commercial real estate loans | Commercial real estate non-owner occupied | Investment Securities/Cash
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Commercial real estate loans | Commercial real estate non-owner occupied | Other
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Commercial and industrial loans
Allowance for loan losses
Nonaccrual Amortized Cost	8,964	8,665
Commercial and industrial loans | Real Estate
Allowance for loan losses
Nonaccrual Amortized Cost	4,828	4,788
Commercial and industrial loans | Investment Securities/Cash
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Commercial and industrial loans | Other
Allowance for loan losses
Nonaccrual Amortized Cost	700	944
Residential real estate | Residential real estate
Allowance for loan losses
Nonaccrual Amortized Cost	3,999	6,696
Residential real estate | Residential real estate | Real Estate
Allowance for loan losses
Nonaccrual Amortized Cost	1,243	5,035
Residential real estate | Residential real estate | Investment Securities/Cash
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Residential real estate | Residential real estate | Other
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Consumer loans | Home equity
Allowance for loan losses
Nonaccrual Amortized Cost	591	961
Consumer loans | Home equity | Real Estate
Allowance for loan losses
Nonaccrual Amortized Cost	49	135
Consumer loans | Home equity | Investment Securities/Cash
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Consumer loans | Home equity | Other
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Consumer loans | Consumer other
Allowance for loan losses
Nonaccrual Amortized Cost	308	682
Consumer loans | Consumer other | Real Estate
Allowance for loan losses
Nonaccrual Amortized Cost	0	40
Consumer loans | Consumer other | Investment Securities/Cash
Allowance for loan losses
Nonaccrual Amortized Cost	0	0
Consumer loans | Consumer other | Other
Allowance for loan losses
Nonaccrual Amortized Cost	$ 0	$ 0

LOANS AND ALLOWANCE FOR CREDIT

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Schedule of Amortized Cost Basis of Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Principal Forgiveness
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Payment Delay
Allowance for loan losses
Amortized cost basis	87	34
Term Extension
Allowance for loan losses
Amortized cost basis	24,592	27,681
Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	0	0
Combination Term Extension and Principal Forgiveness
Allowance for loan losses
Amortized cost basis	0	0
Combination Term Extension and Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	$ 645	$ 3,609
Total Class of Financing Receivable	0.27%	0.35%
Commercial loans | Construction | Principal Forgiveness
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Commercial loans | Construction | Payment Delay
Allowance for loan losses
Amortized cost basis	0	0
Commercial loans | Construction | Term Extension
Allowance for loan losses
Amortized cost basis	0	0
Commercial loans | Construction | Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	0	0
Commercial loans | Construction | Combination Term Extension and Principal Forgiveness
Allowance for loan losses
Amortized cost basis	0	0
Commercial loans | Construction | Combination Term Extension and Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0%
Commercial loans | Commercial multifamily | Principal Forgiveness
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Commercial loans | Commercial multifamily | Payment Delay
Allowance for loan losses
Amortized cost basis	0	0
Commercial loans | Commercial multifamily | Term Extension
Allowance for loan losses
Amortized cost basis	0	0
Commercial loans | Commercial multifamily | Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	0	0
Commercial loans | Commercial multifamily | Combination Term Extension and Principal Forgiveness
Allowance for loan losses
Amortized cost basis	0	0
Commercial loans | Commercial multifamily | Combination Term Extension and Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0%
Commercial real estate loans | Commercial real estate owner occupied | Principal Forgiveness
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Commercial real estate loans | Commercial real estate owner occupied | Payment Delay
Allowance for loan losses
Amortized cost basis	0	0
Commercial real estate loans | Commercial real estate owner occupied | Term Extension
Allowance for loan losses
Amortized cost basis	0	222
Commercial real estate loans | Commercial real estate owner occupied | Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	0	0
Commercial real estate loans | Commercial real estate owner occupied | Combination Term Extension and Principal Forgiveness
Allowance for loan losses
Amortized cost basis	0	0
Commercial real estate loans | Commercial real estate owner occupied | Combination Term Extension and Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0.04%
Commercial real estate loans | Commercial real estate non-owner occupied | Principal Forgiveness
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Commercial real estate loans | Commercial real estate non-owner occupied | Payment Delay
Allowance for loan losses
Amortized cost basis	0	0
Commercial real estate loans | Commercial real estate non-owner occupied | Term Extension
Allowance for loan losses
Amortized cost basis	12,356	11,454
Commercial real estate loans | Commercial real estate non-owner occupied | Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	0	0
Commercial real estate loans | Commercial real estate non-owner occupied | Combination Term Extension and Principal Forgiveness
Allowance for loan losses
Amortized cost basis	0	0
Commercial real estate loans | Commercial real estate non-owner occupied | Combination Term Extension and Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	$ 645	$ 3,600
Total Class of Financing Receivable	0.47%	0.58%
Commercial and industrial loans | Principal Forgiveness
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Commercial and industrial loans | Payment Delay
Allowance for loan losses
Amortized cost basis	87	34
Commercial and industrial loans | Term Extension
Allowance for loan losses
Amortized cost basis	12,236	16,005
Commercial and industrial loans | Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	0	0
Commercial and industrial loans | Combination Term Extension and Principal Forgiveness
Allowance for loan losses
Amortized cost basis	0	0
Commercial and industrial loans | Combination Term Extension and Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	$ 0	$ 9
Total Class of Financing Receivable	0.86%	1.18%
Residential real estate | Residential real estate | Principal Forgiveness
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Residential real estate | Residential real estate | Payment Delay
Allowance for loan losses
Amortized cost basis	0	0
Residential real estate | Residential real estate | Term Extension
Allowance for loan losses
Amortized cost basis	0	0
Residential real estate | Residential real estate | Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	0	0
Residential real estate | Residential real estate | Combination Term Extension and Principal Forgiveness
Allowance for loan losses
Amortized cost basis	0	0
Residential real estate | Residential real estate | Combination Term Extension and Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0%
Consumer loans | Home equity | Principal Forgiveness
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Consumer loans | Home equity | Payment Delay
Allowance for loan losses
Amortized cost basis	0	0
Consumer loans | Home equity | Term Extension
Allowance for loan losses
Amortized cost basis	0	0
Consumer loans | Home equity | Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	0	0
Consumer loans | Home equity | Combination Term Extension and Principal Forgiveness
Allowance for loan losses
Amortized cost basis	0	0
Consumer loans | Home equity | Combination Term Extension and Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0%
Consumer loans | Consumer other | Principal Forgiveness
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Consumer loans | Consumer other | Payment Delay
Allowance for loan losses
Amortized cost basis	0	0
Consumer loans | Consumer other | Term Extension
Allowance for loan losses
Amortized cost basis	0	0
Consumer loans | Consumer other | Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	0	0
Consumer loans | Consumer other | Combination Term Extension and Principal Forgiveness
Allowance for loan losses
Amortized cost basis	0	0
Consumer loans | Consumer other | Combination Term Extension and Interest Rate Reduction
Allowance for loan losses
Amortized cost basis	$ 0	$ 0
Total Class of Financing Receivable	0%	0%

LOANS AND ALLOWANCE FOR CREDI_2

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Credit Losses (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
30-59 Days Past Due
Allowance for loan losses
Total	$ 0	$ 34
60-89 Days Past Due
Allowance for loan losses
Total	0	0
90 Days or Greater Past Due
Allowance for loan losses
Total	0	0
Total Past Due
Allowance for loan losses
Total	0	34
Construction and commercial multifamily | Construction | 30-59 Days Past Due
Allowance for loan losses
Total	0	0
Construction and commercial multifamily | Construction | 60-89 Days Past Due
Allowance for loan losses
Total	0	0
Construction and commercial multifamily | Construction | 90 Days or Greater Past Due
Allowance for loan losses
Total	0	0
Construction and commercial multifamily | Construction | Total Past Due
Allowance for loan losses
Total	0	0
Construction and commercial multifamily | Commercial multifamily | 30-59 Days Past Due
Allowance for loan losses
Total	0	0
Construction and commercial multifamily | Commercial multifamily | 60-89 Days Past Due
Allowance for loan losses
Total	0	0
Construction and commercial multifamily | Commercial multifamily | 90 Days or Greater Past Due
Allowance for loan losses
Total	0	0
Construction and commercial multifamily | Commercial multifamily | Total Past Due
Allowance for loan losses
Total	0	0
Commercial real estate loans | Commercial real estate owner occupied | 30-59 Days Past Due
Allowance for loan losses
Total	0	0
Commercial real estate loans | Commercial real estate owner occupied | 60-89 Days Past Due
Allowance for loan losses
Total	0	0
Commercial real estate loans | Commercial real estate owner occupied | 90 Days or Greater Past Due
Allowance for loan losses
Total	0	0
Commercial real estate loans | Commercial real estate owner occupied | Total Past Due
Allowance for loan losses
Total	0	0
Commercial real estate loans | Commercial real estate non-owner occupied | 30-59 Days Past Due
Allowance for loan losses
Total	0	0
Commercial real estate loans | Commercial real estate non-owner occupied | 60-89 Days Past Due
Allowance for loan losses
Total	0	0
Commercial real estate loans | Commercial real estate non-owner occupied | 90 Days or Greater Past Due
Allowance for loan losses
Total	0	0
Commercial real estate loans | Commercial real estate non-owner occupied | Total Past Due
Allowance for loan losses
Total	0	0
Commercial and industrial loans | 30-59 Days Past Due
Allowance for loan losses
Total	0	34
Commercial and industrial loans | 60-89 Days Past Due
Allowance for loan losses
Total	0	0
Commercial and industrial loans | 90 Days or Greater Past Due
Allowance for loan losses
Total	0	0
Commercial and industrial loans | Total Past Due
Allowance for loan losses
Total	0	34
Residential real estate | Residential real estate | 30-59 Days Past Due
Allowance for loan losses
Total	0	0
Residential real estate | Residential real estate | 60-89 Days Past Due
Allowance for loan losses
Total	0	0
Residential real estate | Residential real estate | 90 Days or Greater Past Due
Allowance for loan losses
Total	0	0
Residential real estate | Residential real estate | Total Past Due
Allowance for loan losses
Total	0	0
Consumer | Home equity | 30-59 Days Past Due
Allowance for loan losses
Total	0	0
Consumer | Home equity | 60-89 Days Past Due
Allowance for loan losses
Total	0	0
Consumer | Home equity | 90 Days or Greater Past Due
Allowance for loan losses
Total	0	0
Consumer | Home equity | Total Past Due
Allowance for loan losses
Total	0	0
Consumer | Consumer other | 30-59 Days Past Due
Allowance for loan losses
Total	0	0
Consumer | Consumer other | 60-89 Days Past Due
Allowance for loan losses
Total	0	0
Consumer | Consumer other | 90 Days or Greater Past Due
Allowance for loan losses
Total	0	0
Consumer | Consumer other | Total Past Due
Allowance for loan losses
Total	$ 0	$ 0

LOANS AND ALLOWANCE FOR CREDI_3

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans Modified (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Construction and commercial multifamily | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	0%	0%
Weighted Average Term Extension (months)	0 months	0 months
Construction and commercial multifamily | Construction | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Construction and commercial multifamily | 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
Construction and commercial multifamily | Commercial multifamily | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Commercial real estate loans | 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 loans | Commercial real estate owner occupied | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Commercial real estate loans | Commercial real estate non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	2.62%	0.05%
Weighted Average Term Extension (months)	26 months	16 months
Commercial real estate loans | Commercial real estate non-owner occupied | Principal Forgiveness
Financing Receivable, Troubled Debt Restructuring [Line Items]
Principal Forgiveness	$ 0	$ 0
Commercial and industrial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Weighted Average Interest Rate Reduction	0%	1.25%
Weighted Average Term Extension (months)	28 months	23 months
Commercial and industrial loans | 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

LOANS AND ALLOWANCE FOR CREDI_4

LOANS AND ALLOWANCE FOR CREDIT LOSSES - TDR (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)
Principal Forgiveness
Allowance for loan losses
Total	$ 0
Payment Delay
Allowance for loan losses
Total	0
Term Extension
Allowance for loan losses
Total	202
Interest Rate Reduction
Allowance for loan losses
Total	0
Construction and commercial multifamily | Construction | Principal Forgiveness
Allowance for loan losses
Total	0
Construction and commercial multifamily | Construction | Payment Delay
Allowance for loan losses
Total	0
Construction and commercial multifamily | Construction | Term Extension
Allowance for loan losses
Total	0
Construction and commercial multifamily | Construction | Interest Rate Reduction
Allowance for loan losses
Total	0
Construction and commercial multifamily | Commercial multifamily | Principal Forgiveness
Allowance for loan losses
Total	0
Construction and commercial multifamily | Commercial multifamily | Payment Delay
Allowance for loan losses
Total	0
Construction and commercial multifamily | Commercial multifamily | Term Extension
Allowance for loan losses
Total	0
Construction and commercial multifamily | Commercial multifamily | Interest Rate Reduction
Allowance for loan losses
Total	0
Commercial real estate loans | Commercial real estate owner occupied | Principal Forgiveness
Allowance for loan losses
Total	0
Commercial real estate loans | Commercial real estate owner occupied | Payment Delay
Allowance for loan losses
Total	0
Commercial real estate loans | Commercial real estate owner occupied | Term Extension
Allowance for loan losses
Total	0
Commercial real estate loans | Commercial real estate owner occupied | Interest Rate Reduction
Allowance for loan losses
Total	0
Commercial real estate loans | Commercial real estate non-owner occupied | Principal Forgiveness
Allowance for loan losses
Total	0
Commercial real estate loans | Commercial real estate non-owner occupied | Payment Delay
Allowance for loan losses
Total	0
Commercial real estate loans | Commercial real estate non-owner occupied | Term Extension
Allowance for loan losses
Total	0
Commercial real estate loans | Commercial real estate non-owner occupied | Interest Rate Reduction
Allowance for loan losses
Total	0
Commercial and industrial loans | Commercial and industrial | Principal Forgiveness
Allowance for loan losses
Total	0
Commercial and industrial loans | Commercial and industrial | Payment Delay
Allowance for loan losses
Total	0
Commercial and industrial loans | Commercial and industrial | Term Extension
Allowance for loan losses
Total	202
Commercial and industrial loans | Commercial and industrial | Interest Rate Reduction
Allowance for loan losses
Total	0
Residential real estate | Residential real estate | Principal Forgiveness
Allowance for loan losses
Total	0
Residential real estate | Residential real estate | Payment Delay
Allowance for loan losses
Total	0
Residential real estate | Residential real estate | Term Extension
Allowance for loan losses
Total	0
Residential real estate | Residential real estate | Interest Rate Reduction
Allowance for loan losses
Total	0
Consumer | Home equity | Principal Forgiveness
Allowance for loan losses
Total	0
Consumer | Home equity | Payment Delay
Allowance for loan losses
Total	0
Consumer | Home equity | Term Extension
Allowance for loan losses
Total	0
Consumer | Home equity | Interest Rate Reduction
Allowance for loan losses
Total	0
Consumer | Consumer other | Principal Forgiveness
Allowance for loan losses
Total	0
Consumer | Consumer other | Payment Delay
Allowance for loan losses
Total	0
Consumer | Consumer other | Term Extension
Allowance for loan losses
Total	0
Consumer | Consumer other | Interest Rate Reduction
Allowance for loan losses
Total	$ 0

PREMISES AND EQUIPMENT (Details

PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Premises and equipment
Premises and equipment, gross	$ 148,739	$ 166,364
Accumulated depreciation and amortization	(92,130)	(97,449)
Premises and equipment, net	56,609	68,915
Depreciation and amortization expense	7,000	8,400	$ 9,600
Land
Premises and equipment
Premises and equipment, gross	11,828	12,525
Buildings and improvements
Premises and equipment
Premises and equipment, gross	$ 72,576	89,222
Buildings and improvements | Minimum
Premises and equipment
Estimated Useful Life	5 years
Buildings and improvements | Maximum
Premises and equipment
Estimated Useful Life	39 years
Furniture and equipment
Premises and equipment
Premises and equipment, gross	$ 60,597	64,290
Furniture and equipment | Minimum
Premises and equipment
Estimated Useful Life	3 years
Furniture and equipment | Maximum
Premises and equipment
Estimated Useful Life	7 years
Construction in process
Premises and equipment
Premises and equipment, gross	$ 3,738	327
Continuing and Discontinued Operations
Premises and equipment
Premises and equipment, net	$ 56,609	$ 68,915

OTHER INTANGIBLES - Schedule of

OTHER INTANGIBLES - Schedule of Components of Other Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 85,079	$ 85,079
Accumulated Amortization	(70,015)	(65,415)
Net Intangible Assets	15,064	19,664
Non-maturity deposits (core deposit intangible)
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	77,213	77,213
Accumulated Amortization	(63,093)	(58,965)
Net Intangible Assets	14,120	18,248
All other intangible assets
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	7,866	7,866
Accumulated Amortization	(6,922)	(6,450)
Net Intangible Assets	$ 944	$ 1,416

OTHER INTANGIBLES - Narrative (

OTHER INTANGIBLES - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 4,601,000	$ 4,820,000	$ 5,134,000
Finite-lived intangible assets, amortization expense, 2025	4,500,000
Finite-lived intangible assets, amortization expense, 2026	4,500,000
Finite-lived intangible assets, amortization expense, 2027	3,600,000
Finite-lived intangible assets, amortization expense, 2028	1,800,000
Finite-lived intangible assets, amortization expense, 2029	700,000
Impairment of intangible assets, finite-lived	$ 0	$ 0	$ 0
Minimum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life (in years)	4 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible asset, useful life (in years)	15 years

OTHER ASSETS - Schedule of Othe

OTHER ASSETS - Schedule of Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Other Assets [Abstract]
Capitalized servicing rights	$ 11,790	$ 12,095	$ 13,047	$ 16,022
Accrued interest receivable	49,410	53,096
Accrued federal and state tax receivable	36,610	33,564
Right-of-use assets	50,195	47,348
Derivative assets	47,923	45,668
Deferred tax asset	97,449	110,068
Tax credits investments	35,597	16,644
Other	29,468	23,274
Total other assets	$ 358,442	$ 341,757

OTHER ASSETS - Narrative (Detai

OTHER ASSETS - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Servicing Asset at Amortized Cost [Line Items]
Contractually Specified Servicing Fee Income, Statement of Income or Comprehensive Income [Extensible Enumeration]	Non-interest income	Non-interest income
Capitalized servicing rights	$ 17.7	$ 16.6
Continuing Operations
Servicing Asset at Amortized Cost [Line Items]
Mortgage loans sold and serviced for others	1,500	1,400	$ 1,500
Servicing fees	$ 6.2	$ 6.7	$ 5.5

OTHER ASSETS - Schedule of Mort

OTHER ASSETS - Schedule of Mortgage Servicing Rights Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Mortgage servicing rights activity
Balance at beginning of year	$ 12,095	$ 13,047	$ 16,022
Additions	3,746	2,892	3,119
Amortization	(3,895)	(4,330)	(4,590)
Payoffs	(1,056)	(952)	(958)
Allowance adjustment	900	1,438	(546)
Balance at end of year	11,790	12,095	$ 13,047
Servicing rights accounted for at fair value	$ 1,200	$ 1,500

DEPOSITS - Schedule of Time Dep

DEPOSITS - Schedule of Time Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Maturity date:
Within 1 year	$ 2,295,935	$ 2,364,280
Over 1 year to 2 years	252,981	270,630
Over 2 years to 3 years	10,574	26,039
Over 3 years to 4 years	6,800	9,020
Over 4 years to 5 years	3,754	9,864
Over 5 years	6,638	6,417
Account balances:
Less than $100,000	707,936	724,911
$100,000 through $250,000	1,157,227	1,276,175
$250,000 or more	711,519	685,164
Total	$ 2,576,682	$ 2,686,250

DEPOSITS - Narrative (Details)

DEPOSITS - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Related Party Transaction [Line Items]
Brokered deposits	$ 440,000	$ 524,400
Reciprocal deposits	138,500	110,200
Time deposits	2,576,682	2,686,250
Affiliated Entity
Related Party Transaction [Line Items]
Time deposits	$ 24,400	$ 25,000

BORROWED FUNDS - Schedule of Bo

BORROWED FUNDS - Schedule of Borrowed Funds (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Borrowings and junior subordinated debentures
Principal, Short-term borrowings	$ 103,500	$ 260,000
Principal, Long-term borrowings	334,594	246,586
Total borrowings	$ 438,094	$ 506,586
Weighted average rate on short-term borrowings (as percent)	5.33%	5.54%
Weighted average rate on long-term borrowings (as percent)	4.92%	5.33%
Weighted Average Rate	5.02%	5.44%
Advances from the FHLBB
Borrowings and junior subordinated debentures
Principal, Short-term borrowings	$ 103,500	$ 260,000
Principal, Long-term borrowings	$ 212,982	$ 125,223
Weighted average rate on short-term borrowings (as percent)	5.33%	5.54%
Weighted average rate on long-term borrowings (as percent)	4.48%	4.80%
Subordinated notes
Borrowings and junior subordinated debentures
Principal, Long-term borrowings	$ 98,532	$ 98,335
Weighted average rate on long-term borrowings (as percent)	5.50%	5.50%
Junior subordinated borrowing - Trust I
Borrowings and junior subordinated debentures
Principal, Long-term borrowings	$ 15,464	$ 15,464
Weighted average rate on long-term borrowings (as percent)	6.63%	7.49%
Junior subordinated borrowing - Trust II
Borrowings and junior subordinated debentures
Principal, Long-term borrowings	$ 7,616	$ 7,564
Weighted average rate on long-term borrowings (as percent)	6.32%	7.35%

BORROWED FUNDS - Narrative (Det

BORROWED FUNDS - Narrative (Details) - USD ($)	1 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2024	Dec. 31, 2023
Borrowings and junior subordinated debentures
Short-term debt		$ 103,500,000	$ 260,000,000
Long-term borrowings		334,594,000	246,586,000
Variable-rate FHLB advances		0	0
Federal Reserve Bank Advances
Borrowings and junior subordinated debentures
Line of credit facility, remaining borrowing capacity		1,600,000,000	1,500,000,000
Advances from the FHLBB
Borrowings and junior subordinated debentures
Line of credit		3,000,000
Long-term line of credit		0	0
Line of credit facility, remaining borrowing capacity		2,500,000,000	2,500,000,000
Short-term debt		103,500,000	260,000,000
Long-term borrowings		212,982,000	125,223,000
Federal Reserve Bank Advances
Borrowings and junior subordinated debentures
Short-term debt		0	0
Federal Home Loan Bank Certificates And Obligations F H L B Callable Advances
Borrowings and junior subordinated debentures
Long-term borrowings		0	0
Federal Home Loan Bank Certificates And Obligations F H L B Amortizing Advances
Borrowings and junior subordinated debentures
Long-term borrowings		6,000,000	4,200,000
Subordinated notes
Borrowings and junior subordinated debentures
Long-term borrowings		98,532,000	$ 98,335,000
Subordinated notes | Subordinated Debt
Borrowings and junior subordinated debentures
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 notes | Debt Instrument Variable Rate Three Month SOFR | Subordinated Debt
Borrowings and junior subordinated debentures
Unamortized debt issuance expense		$ 1,500,000
Junior subordinated borrowing | Trust I
Borrowings and junior subordinated debentures
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		6.63%	7.49%
Period up to which interest payments can be deferred		5 years
Junior subordinated borrowing | Trust II
Borrowings and junior subordinated debentures
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		6.32%	7.35%
Period up to which interest payments can be deferred		5 years
Junior subordinated borrowing | LIBOR | Trust I
Borrowings and junior subordinated debentures
Interest rate margin		1.85%
Junior subordinated borrowing | LIBOR | Trust II
Borrowings and junior subordinated debentures
Interest rate margin		1.70%

BORROWED FUNDS - Schedule of Ma

BORROWED FUNDS - Schedule of Maturities of FHLBB Advances (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Amount
Total FHLBB advances	$ 316,482
Weighted Average Rate
Weighted Average Rate
Total FHLBB advances	4.76%
Fixed Rate Advances
Amount
2025	$ 258,500
2026	25,484
2027	25,147
2028	779
2029 and beyond	$ 6,572
Fixed Rate Advances | Weighted Average Rate
Weighted Average Rate
2025	5.08%
2026	3.75%
2027	3.65%
2028	0%
2029 and beyond	0.68%

OTHER LIABILITIES (Details)

OTHER LIABILITIES (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Other Liabilities Disclosure [Abstract]
Derivative liabilities	$ 79,039	$ 75,957
Collateral on interest rate swaps	32,500	25,520
Finance lease liabilities	891	8,681
Employee benefits liability	38,772	43,042
Operating lease liabilities	55,986	53,026
Delayed equity contributions	18,743	0
Accrued interest payable	9,005	13,766
Customer transaction clearing accounts	7,931	12,366
Allowance for credit losses on unfunded commitments	9,821	9,256
Other	39,998	37,016
Total other liabilities	$ 292,686	$ 278,630

EMPLOYEE BENEFIT PLANS - Schedu

EMPLOYEE BENEFIT PLANS - Schedule of changes in the Projected Benefit Obligation and Plan Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plans
Change in projected benefit obligation:
Projected benefit obligation at beginning of year	$ 3,642	$ 3,729
Service Cost	42	59	$ 68
Interest cost	175	186	141
Actuarial loss	(360)	(20)
Benefits paid	(264)	(250)
Settlements	0	(62)
Projected benefit obligation at end of year	3,235	3,642	3,729
Accumulated benefit obligation	3,235	3,642
Change in fair value of plan assets:
Fair value of plan assets at plan beginning of year	4,999	4,683
Actual return on plan assets	521	628
Contributions by employer	0	0
Benefits paid	(264)	(250)
Settlements	0	(62)
Fair value of plan assets at end of year	5,256	4,999	4,683
(Overfunded) status	(2,021)	(1,357)
Postretirement Benefits
Change in projected benefit obligation:
Projected benefit obligation at beginning of year	3,306	3,215
Service Cost	8	7	12
Interest cost	165	166	122
Participant contributions	0	0
Actuarial loss	(289)	58
Benefits paid	(108)	(140)
Projected benefit obligation at end of year	3,082	3,306	3,215
Change in fair value of plan assets:
Fair value of plan assets at plan beginning of year	0	0
Contributions by employer	108	140
Contributions by participant	0	0
Benefits paid	(108)	(140)
Fair value of plan assets at end of year	$ 0	$ 0	$ 0

EMPLOYEE BENEFIT PLANS - Sche_2

EMPLOYEE BENEFIT PLANS - Schedule of Amounts Recognized in Statement of Financial Position (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Jul. 01, 2024	Dec. 31, 2023
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Other liabilities		$ 5,000
Pension Plans | Other assets
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Other assets	$ 2,021		$ 1,357
Pension Plans | Other liabilities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Other liabilities	0		0
Postretirement Benefits | Other liabilities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Other liabilities	$ 3,082		$ 3,306

EMPLOYEE BENEFIT PLANS - Sche_3

EMPLOYEE BENEFIT PLANS - Schedule of Net Periodic Cost (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	$ 42	$ 59	$ 68
Interest Cost	175	186	141
Expected return on plan assets	(316)	(295)	(376)
Amortization of unrecognized actuarial loss	0	6	11
Net periodic pension (credit)	(99)	(44)	(156)
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service Cost	8	7	12
Interest Cost	165	166	122
Amortization of net prior service credit	94	83	83
Amortization of unrecognized actuarial loss	(51)	(64)	30
Net periodic pension (credit)	$ 216	$ 192	$ 247

EMPLOYEE BENEFIT PLANS - Sche_4

EMPLOYEE BENEFIT PLANS - Schedule of Changes in Plan Assets and Benefit Obligations Recognized in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of actuarial (loss)	$ 0	$ (6)	$ (11)
Actuarial (gain)	(565)	(353)	(154)
Settlement charge	0	0	0
Total recognized in accumulated other comprehensive income	(565)	(359)	(165)
Total recognized in net periodic pension cost recognized and other comprehensive income	(664)	(403)	(321)
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Amortization of prior service credit	(94)	(83)	(83)
Actuarial (gain)	(139)	(1,148)	(1,426)
Total recognized in accumulated other comprehensive income	(233)	(1,231)	(1,509)
Accrued post-retirement liability recognized	$ 3,082	$ 3,306	$ 3,215

EMPLOYEE BENEFIT PLANS - Narrat

EMPLOYEE BENEFIT PLANS - Narrative (Details) - USD ($)		12 Months Ended
	Aug. 01, 2014	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Jul. 01, 2024
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expense under the plan		$ 3,300,000	$ 3,100,000	$ 2,900,000
Split-dollar agreement, accrued liability		$ 6,900,000	7,000,000
Marketable equity securities
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocation		65%
Fixed income
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocation		34%
Cash Equivalents - money market
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Target plan asset allocation		1%
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial (gain)/loss		$ (400,000)	100,000	500,000
Expected cash contributions by employer		0
Defined benefit plan, expected amortization of gain (loss), next fiscal year		0
Expense under the plan		345,000
Defined benefit plan, fair value of plan assets		$ 5,256,000	$ 4,999,000	$ 4,683,000	$ 3,900,000
Other liabilities					$ 5,000,000
Funded status of plan (greater than)					80%
Discount rate		4.99%	5.21%	2.73%
Pension Plans | Cash Equivalents - money market
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets		$ 45,000	$ 54,000
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net actuarial (gain)/loss		(928,000)	(690,000)	$ (812,000)
Defined benefit plan, fair value of plan assets		0	$ 0	0
Prior service cost of long-term care plan participants	$ 558,000
Amount expected to be amortized from other comprehensive income into net periodic pension cost over the next fiscal year		$ 61,000
Discount rate		5.52%	4.98%
Supplemental Employee Retirement Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expense under the plan				$ 2,000,000
Benefit under the plan		$ 400,000	$ 1,000,000
Accrued liability		$ 14,900,000	$ 16,700,000

EMPLOYEE BENEFIT PLANS - Sche_5

EMPLOYEE BENEFIT PLANS - Schedule of Principal Actuarial Assumptions (Details) - Pension Plans	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Projected benefit obligation, discount rate	5.55%	4.99%	5.21%
Net periodic pension cost, discount rate	4.99%	5.21%	2.73%
Net periodic pension cost, long term rate of return on plan assets	6.50%	6.50%	6.50%

EMPLOYEE BENEFIT PLANS - Sche_6

EMPLOYEE BENEFIT PLANS - Schedule of Fair Values of the Plan's Assets by Asset Category and Level Within the Fair Value Hierarchy (Details) - Pension Plans - USD ($) $ in Thousands	Dec. 31, 2024	Jul. 01, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	$ 5,256	$ 3,900	$ 4,999	$ 4,683
Large-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	1,615		1,357
Mid-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	398		364
Small-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	413		386
International
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	811		828
Fixed Income Mutual Funds:
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	1,614		1,674
Equity Common/Collective Trusts:
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	360		336
Cash Equivalents - money market
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	45		54
Level 1
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	4,896		4,663
Level 1 | Large-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	1,615		1,357
Level 1 | Mid-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	398		364
Level 1 | Small-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	413		386
Level 1 | International
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	811		828
Level 1 | Fixed Income Mutual Funds:
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	1,614		1,674
Level 1 | Equity Common/Collective Trusts:
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0		0
Level 1 | Cash Equivalents - money market
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	45		54
Level 2
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	360		336
Level 2 | Large-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0		0
Level 2 | Mid-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0		0
Level 2 | Small-Cap
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0		0
Level 2 | International
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0		0
Level 2 | Fixed Income Mutual Funds:
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	0		0
Level 2 | Equity Common/Collective Trusts:
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	360		336
Level 2 | Cash Equivalents - money market
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Defined benefit plan, fair value of plan assets	$ 0		$ 0

EMPLOYEE BENEFIT PLANS - Sche_7

EMPLOYEE BENEFIT PLANS - Schedule of Estimated Benefit Payments (Details) $ in Thousands	Dec. 31, 2024 USD ($)
Pension Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2025	$ 254
2026	249
2027	244
2028	246
2029 - 2034	1,493
Postretirement Benefits
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
2025	99
2026	97
2027	104
2028	101
2029 - 2034	$ 900

EMPLOYEE BENEFIT PLANS - Sche_8

EMPLOYEE BENEFIT PLANS - Schedule of Amounts in Accumulated Other Comprehensive Income That Have Not Yet Been Recognized as Components of Net Periodic Benefit Cost (Details) - Postretirement Benefits - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net prior service cost	$ 981	$ 1,075	$ 1,159
Net actuarial (gain)/loss	(928)	(690)	(812)
Total recognized in accumulated other comprehensive income	$ 53	$ 385	$ 347

INCOME TAXES - Schedule of Comp

INCOME TAXES - Schedule of Components of Provision for Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Current:
Federal tax expense									$ 11,136	$ 5,596	$ 17,915
State tax expense									7,001	7,497	6,831
Total current tax expense									18,137	13,093	24,746
Deferred:
Federal tax expense/(benefit)									1,135	(2,658)	(2,274)
State tax (benefit)									(760)	(1,711)	(1,187)
Total deferred tax expense/(benefit)									375	(4,369)	(3,461)
Change in valuation allowance									0	0	0
Income tax expense	$ 6,948	$ 10,645	$ 7,210	$ (6,291)	$ (4,509)	$ 3,741	$ 3,944	$ 5,548	$ 18,512	$ 8,724	$ 21,285

INCOME TAXES - Schedule of Reco

INCOME TAXES - Schedule of Reconciliation of the Statutory Federal Income Tax Rate to Effective Tax Rate (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Amount
Statutory tax rate									$ 16,698	$ 16,448	$ 23,902
State taxes, net of federal tax benefit									4,722	4,570	4,459
Tax exempt income - investments, net									(3,431)	(3,611)	(3,515)
Bank-owned life insurance									(1,762)	(1,568)	(1,258)
Non-deductible merger costs									1,306	0	0
Tax credits, net of basis reduction									325
Tax credits, net of basis reduction										(7,804)	(2,129)
Other, net									654	689	(174)
Income tax expense	$ 6,948	$ 10,645	$ 7,210	$ (6,291)	$ (4,509)	$ 3,741	$ 3,944	$ 5,548	$ 18,512	$ 8,724	$ 21,285
Rate
Statutory tax rate									21%	21%	21%
State taxes, net of federal tax benefit									6.20%	5.80%	3.90%
Tax exempt income - investments, net									(4.30%)	(4.60%)	(3.10%)
Bank-owned life insurance									(2.20%)	(2.00%)	(1.10%)
Non-deductible merger costs									1.60%	0%	0%
Tax credits, net of basis reduction									0.20%
Tax credits, net of basis reduction										(10.00%)	(1.90%)
Other, net									0.80%	0.90%	(0.10%)
Effective tax rate									23.30%	11.10%	18.70%

INCOME TAXES - Schedule of Co_2

INCOME TAXES - Schedule of Components of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Deferred tax assets:
Allowance for credit losses	$ 34,410	$ 31,181
Unrealized capital loss on tax credit investments	275	2,688
Net unrealized loss on securities available for sale, swaps, and pension in OCI	38,459	50,704
Employee benefit plans	11,571	12,102
Purchase accounting adjustments	3,240	4,587
Net operating loss carryforwards	99	202
Deferred loan fees	6,055	5,654
Lease liability	14,701	13,583
Premises and equipment	1,979	1,188
Nonaccrual interest	528	890
Intangible amortization	1,297	1,020
Other	2,176	2,337
Deferred tax assets, net before valuation allowances	114,790	126,136
Valuation allowance	(400)	(400)
Deferred tax assets, net of valuation allowances	114,390	125,736
Deferred tax liabilities:
Loan servicing rights	(1,126)	(1,133)
Unamortized tax credit reserve	(1,949)	(1,661)
Right-of-use asset	(13,866)	(12,874)
Deferred tax liabilities	(16,941)	(15,668)
Deferred tax assets, net	$ 97,449	$ 110,068

INCOME TAXES - Narrative (Detai

INCOME TAXES - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)
Income Tax Disclosure [Abstract]
Decrease in net deferred tax assets	$ 12,600
Change in unrealized losses in OCI	12,200
Deferred loan fees	$ 99

INCOME TAXES - Schedule of Co_3

INCOME TAXES - Schedule of Components of the Valuation Allowance on Deferred Tax Asset (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Income Tax Disclosure [Abstract]
State valuation allowances	$ (400)	$ (400)

INCOME TAXES - Schedule of Chan

INCOME TAXES - Schedule of Changes in Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Unrecognized Tax Benefits [Roll Forward]
Unrecognized tax benefits at January 1	$ 1,824	$ 1,042	$ 1,025
Increase in gross amounts of tax positions related to prior years	1,456	782	17
Decrease in gross amounts of tax positions related to prior years	(1,182)	0	0
Unrecognized tax benefits at December 31	$ 2,098	$ 1,824	$ 1,042

DERIVATIVE INSTRUMENTS AND HE_3

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Narrative (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) instrument	Dec. 31, 2023 USD ($)
Derivative [Line Items]
Derivative, notional amount	$ 4,883,127,000	$ 4,787,190,000
Amortized cost of securities pledged as collateral to derivative counterparties	9,600,000	9,800,000
Fair value of securities as pledged collateral to derivative counterparties	9,100,000	9,600,000
Cash pledged as collateral to derivative counterparties	0	0
Non-hedging derivatives:
Derivative [Line Items]
Derivative, notional amount	10,512,000	11,104,000
Cash Flow Hedging
Derivative [Line Items]
Derivative, notional amount	$ 800,000,000	800,000,000
Economic Hedging | Tax advantaged economic development bonds
Derivative [Line Items]
Fixed rate of interest (percent)	5.09%
Maturity period	21 years
Economic Hedging | Hedging derivatives
Derivative [Line Items]
Derivative, notional amount	$ 4,072,615,000	3,976,086,000
Interest Rate Swap
Derivative [Line Items]
Cash pledged as collateral to derivative counterparties	0	0
Interest Rate Swap | Financial institutions counterparties
Derivative [Line Items]
Derivative asset, fair value, amount offset against collateral	44,800,000	39,800,000
Amount of collateral posted for the net liability positions	3,100,000	6,100,000
Interest Rate Swap | Commercial counterparties
Derivative [Line Items]
Cash pledged as collateral to derivative counterparties	0	0
Derivative asset, fair value, amount offset against collateral	3,100,000	6,000,000
Amount of collateral posted for the net liability positions	$ 76,000,000	69,800,000
Interest Rate Swap | Cash Flow Hedging
Derivative [Line Items]
Number of interest rate swap contracts (contract) | instrument	8
Interest Rate Swap | Cash Flow Hedging | Minimum
Derivative [Line Items]
Durations of derivative instruments	1 year
Interest Rate Swap | Cash Flow Hedging | Maximum
Derivative [Line Items]
Durations of derivative instruments	2 years
Interest Rate Swap | Cash Flow Hedging | Hedging derivatives
Derivative [Line Items]
Derivative, notional amount	$ 600,000,000
Interest Rate Swap | Economic Hedging | Tax advantaged economic development bonds
Derivative [Line Items]
Derivative, notional amount	5,300,000
Interest Rate Swap | Economic Hedging | Hedging derivatives
Derivative [Line Items]
Derivative, notional amount	3,700,000,000
Interest Rate Swap | Economic Hedging | Hedging derivatives | Tax advantaged economic development bonds
Derivative [Line Items]
Derivative, notional amount	$ 5,297,000	6,202,000
Interest Rate Collars | Cash Flow Hedging
Derivative [Line Items]
Number of interest rate swap contracts (contract) | instrument	2
Interest Rate Collars | Cash Flow Hedging | Minimum
Derivative [Line Items]
Durations of derivative instruments	1 year
Interest Rate Collars | Cash Flow Hedging | Maximum
Derivative [Line Items]
Durations of derivative instruments	2 years
Interest Rate Collars | Cash Flow Hedging | Hedging derivatives
Derivative [Line Items]
Derivative, notional amount	$ 200,000,000
Risk Participation Agreements | Economic Hedging | Hedging derivatives
Derivative [Line Items]
Derivative, notional amount	345,367,000	376,553,000
Forward Commitments | Economic Hedging | Hedging derivatives
Derivative [Line Items]
Derivative, notional amount	2,991,000	$ 2,207,000
Interest Rate Swap And Forward Starting INterest Rate Swap | Cash Flow Hedging
Derivative [Line Items]
Derivative, notional amount	600,000,000
First Interest Rate Collars | Cash Flow Hedging
Derivative [Line Items]
Derivative, notional amount	$ 100,000,000
Derivative, cap interest rate	5.75%
Derivative, floor interest rate	3%
Second Interest Rate Collars | Cash Flow Hedging
Derivative [Line Items]
Derivative, notional amount	$ 100,000,000
Derivative, cap interest rate	5.75%
Derivative, floor interest rate	3.25%

DERIVATIVE INSTRUMENTS AND HE_4

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Interest Rate Swap Agreements and Non-hedging Derivative Assets and Liabilities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Offsetting Assets [Line Items]
Notional Amount	$ 4,883,127	$ 4,787,190
Estimated Fair Value Asset (Liability)	(31,116)	(30,289)
Fair value estimates, impact of settled to market contract	28,800	26,700
Non-hedging derivatives
Offsetting Assets [Line Items]
Notional Amount	10,512	11,104
Estimated Fair Value Asset (Liability)	90	34
Commitments to lend | Non-hedging derivatives
Offsetting Assets [Line Items]
Notional Amount	$ 10,512	$ 11,104
Weighted Average Maturity (in years)	2 months 12 days	2 months 12 days
Estimated Fair Value Asset (Liability)	$ 90	$ 34
Cash Flow Hedging
Offsetting Assets [Line Items]
Notional Amount	800,000	800,000
Estimated Fair Value Asset (Liability)	193	1,658
Cash Flow Hedging | Interest rate swap | Hedging derivatives
Offsetting Assets [Line Items]
Notional Amount	600,000
Cash Flow Hedging | Interest rate swap | Commercial Loan
Offsetting Assets [Line Items]
Notional Amount	$ 600,000	$ 600,000
Weighted Average Maturity (in years)	10 months 24 days	1 year 10 months 24 days
Weighted Average Rate - Received	3.64%	3.64%
Weighted Average Rate - Contract pay rate	4.53%	5.35%
Estimated Fair Value Asset (Liability)	$ 0	$ 0
Cash Flow Hedging | Interest Rate Collars | Hedging derivatives
Offsetting Assets [Line Items]
Notional Amount	200,000
Cash Flow Hedging | Interest Rate Collars | Commercial Loan
Offsetting Assets [Line Items]
Notional Amount	$ 200,000	$ 200,000
Weighted Average Maturity (in years)	1 year 6 months	2 years 6 months
Estimated Fair Value Asset (Liability)	$ 193	$ 1,658
Economic Hedging | Hedging derivatives
Offsetting Assets [Line Items]
Notional Amount	4,072,615	3,976,086
Estimated Fair Value Asset (Liability)	(31,399)	(31,981)
Economic Hedging | Interest rate swap | Tax advantaged economic development bonds
Offsetting Assets [Line Items]
Notional Amount	5,300
Economic Hedging | Interest rate swap | Hedging derivatives
Offsetting Assets [Line Items]
Notional Amount	3,700,000
Economic Hedging | Interest rate swap | Hedging derivatives | Tax advantaged economic development bonds
Offsetting Assets [Line Items]
Notional Amount	$ 5,297	$ 6,202
Weighted Average Maturity (in years)	4 years 10 months 24 days	5 years 10 months 24 days
Weighted Average Rate - Received	5.03%	5.82%
Weighted Average Rate - Contract pay rate	5.09%	5.09%
Estimated Fair Value Asset (Liability)	$ (79)	$ (172)
Economic Hedging | Interest rate swap | Hedging derivatives | Commercial loan
Offsetting Assets [Line Items]
Notional Amount	$ 1,859,480	$ 1,795,562
Weighted Average Maturity (in years)	4 years 6 months	4 years 10 months 24 days
Weighted Average Rate - Received	4.65%	4.36%
Weighted Average Rate - Contract pay rate	5.35%	6.27%
Estimated Fair Value Asset (Liability)	$ (72,911)	$ (63,865)
Economic Hedging | Reverse interest rate swaps | Hedging derivatives | Commercial loan
Offsetting Assets [Line Items]
Notional Amount	$ 1,859,480	$ 1,795,562
Weighted Average Maturity (in years)	4 years 6 months	4 years 10 months 24 days
Weighted Average Rate - Received	5.35%	6.27%
Weighted Average Rate - Contract pay rate	4.65%	4.36%
Estimated Fair Value Asset (Liability)	$ 41,501	$ 32,053
Economic Hedging | Risk participation agreements | Hedging derivatives
Offsetting Assets [Line Items]
Notional Amount	$ 345,367	$ 376,553
Weighted Average Maturity (in years)	5 years 1 month 6 days	5 years 6 months
Estimated Fair Value Asset (Liability)	$ 56	$ (18)
Economic Hedging | Forward sale commitments | Hedging derivatives
Offsetting Assets [Line Items]
Notional Amount	$ 2,991	$ 2,207
Weighted Average Maturity (in years)	2 months 12 days	2 months 12 days
Estimated Fair Value Asset (Liability)	$ 34	$ 21

DERIVATIVE INSTRUMENTS AND HE_5

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Cash Flow Hedges Included in Accumulated Other Comprehensive Income (Loss) (Details) - Interest Rate Swap - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Interest Expense
Derivative [Line Items]
Net interest expense recognized on hedged commercial loans	$ 9,889	$ 9,026	$ (15)
Commercial Loan
Derivative [Line Items]
Unrealized gain/(loss) recognized in accumulated other comprehensive loss	596	1,770	(6,667)
Less: Reclassification of unrealized (loss) from accumulated other comprehensive loss to interest income	(632)	(632)	0
Net tax benefit/(expense) on items recognized in accumulated other comprehensive income	(321)	(630)	1,789
Other comprehensive gain/(loss) recorded in accumulated other comprehensive income/(loss), net of reclassification adjustments and tax effects	$ 907	$ 1,772	$ (4,878)

DERIVATIVE INSTRUMENTS AND HE_6

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Amounts Included in the Consolidated Statements of Income Related to Economic Hedges and Non-hedging Derivatives (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Hedging derivatives | Economic Hedging | Interest Rate Swap | Industrial Revenue Bond
Derivative [Line Items]
Unrealized gain recognized in other non-interest income	$ 93	$ 21	$ 941
Hedging derivatives | Economic Hedging | Interest Rate Swap | Commercial loan
Derivative [Line Items]
Unrealized gain recognized in other non-interest income	(9,108)	31,310	(171,272)
Hedging derivatives | Economic Hedging | Reverse Interest Rate Swaps | Commercial loan
Derivative [Line Items]
Unrealized gain recognized in other non-interest income	9,108	(31,310)	171,272
Favorable change in credit valuation adjustment recognized in other non-interest income	0	0	1,809
Hedging derivatives | Economic Hedging | Risk Participation Agreements
Derivative [Line Items]
Unrealized gain recognized in other non-interest income	74	(74)	(521)
Hedging derivatives | Economic Hedging | Forward Commitments | Noninterest Income
Derivative [Line Items]
Unrealized gain recognized in other non-interest income	13	13	(126)
Non-hedging derivatives | Commitments to lend
Derivative [Line Items]
Realized gain in other non-interest income	1,509	536	462
Non-hedging derivatives | Commitments to lend | Noninterest Income
Derivative [Line Items]
Unrealized gain recognized in other non-interest income	$ 56	$ 17	$ (107)

DERIVATIVE INSTRUMENTS AND HE_7

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Assets Subject to an Enforceable Master Netting Arrangement (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Offsetting Assets [Line Items]
Net Amounts of Assets Presented in the Statements of Condition	$ 47,923	$ 45,668
Interest Rate Swap
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets	79,334	77,571
Gross Amounts Offset in the Statements of Condition	(31,410)	(31,812)
Net Amounts of Assets Presented in the Statements of Condition	47,924	45,759
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	(32,500)	0
Net Amount	15,424	45,759
Institutional counterparties | Interest Rate Swap
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets	76,242	71,579
Gross Amounts Offset in the Statements of Condition	(31,410)	(31,812)
Net Amounts of Assets Presented in the Statements of Condition	44,832	39,767
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	(32,500)	0
Net Amount	12,332	39,767
Commercial counterparties | Interest Rate Swap
Offsetting Assets [Line Items]
Gross Amounts of Recognized Assets	3,092	5,992
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Assets Presented in the Statements of Condition	3,092	5,992
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments	0	0
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Received	0	0
Net Amount	$ 3,092	$ 5,992

DERIVATIVE INSTRUMENTS AND HE_8

DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Liabilities Subject to an Enforceable Master Netting Arrangement (Details) - USD ($)	Dec. 31, 2024	Dec. 31, 2023
Offsetting Liabilities [Line Items]
Net Amounts of Liabilities Presented in the Statement of Condition	$ (79,039,000)	$ (75,957,000)
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Received	0	0
Interest Rate Swap
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	(81,744,000)	(81,073,000)
Gross Amounts Offset in the Statements of Condition	2,659,000	5,142,000
Net Amounts of Liabilities Presented in the Statement of Condition	(79,085,000)	(75,931,000)
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments	9,078,000	9,633,000
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Received	0	0
Net Amount	(70,007,000)	(66,298,000)
Institutional counterparties | Interest Rate Swap
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	(5,741,000)	(11,277,000)
Gross Amounts Offset in the Statements of Condition	2,659,000	5,142,000
Net Amounts of Liabilities Presented in the Statement of Condition	(3,082,000)	(6,135,000)
Gross Amounts Not Offset in the Statements of Condition, Financial Instruments	9,078,000	9,633,000
Gross Amounts Not Offset in the Statements of Condition, Cash Collateral Received	0	0
Net Amount	5,996,000	3,498,000
Commercial counterparties | Interest Rate Swap
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	(76,003,000)	(69,796,000)
Gross Amounts Offset in the Statements of Condition	0	0
Net Amounts of Liabilities Presented in the Statement of Condition	(76,003,000)	(69,796,000)
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	$ (76,003,000)	$ (69,796,000)

LEASES - Narrative (Details)

LEASES - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Operating lease expense	$ 8.9	$ 9.1	$ 9.7
Minimum
Lessee, Lease, Description [Line Items]
Operating lease contract term	1 month
Maximum
Lessee, Lease, Description [Line Items]
Operating lease contract term	15 years

LEASES - Schedule of ROU Assets

LEASES - Schedule of ROU Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Lease Right-of-Use Assets
Operating lease right-of-use assets	$ 50,195	$ 47,348
Finance lease right-of-use assets	629	5,597
Total Lease Right-of-Use Assets	50,824	52,945
Lease Liabilities
Operating lease liabilities	55,986	53,026
Finance lease liabilities	891	8,681
Total Lease Liabilities	$ 56,877	$ 61,707
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	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 List]	Other liabilities	Other liabilities

LEASES - Schedule of Supplement

LEASES - Schedule of Supplemental Information Related to Leases (Details)	Dec. 31, 2024	Dec. 31, 2023
Weighted-Average Remaining Lease Term (in years)
Operating leases	8 years 1 month 6 days	8 years 3 months 18 days
Finance leases	13 years	10 years 9 months 18 days
Weighted-Average Discount Rate
Operating leases	3.53%	2.90%
Finance leases	5%	5%

LEASES - Schedule of Suppleme_2

LEASES - Schedule of Supplemental Cash Flow Information Related to Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 8,302	$ 9,009	$ 9,438
Operating cash flows from finance leases	46	446	476
Financing cash flows from finance leases	$ 47	$ 593	$ 555

LEASES - Schedule of Maturity A

LEASES - Schedule of Maturity Analysis of Operating and Finance Lease Liability (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Operating Leases
2025	$ 9,053
2026	9,194
2026	8,507
2027	7,400
2028	6,494
Thereafter	23,250
Total undiscounted lease payments	63,898
Less amounts representing interest	(7,912)
Lease liability	55,986	$ 53,026
Finance Leases
2024	93
2025	93
2026	93
2027	93
2028	93
Thereafter	744
Total undiscounted lease payments	1,209
Less amounts representing interest	(318)
Lease liability	$ 891	$ 8,681

OTHER COMMITMENTS, CONTINGENC_3

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES - Schedule of Financial Instruments Outstanding Whose Contract Amounts Represent Credit Risk (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial commitments whose contractual amount represents credit risk
Total	$ 2,118,794	$ 2,237,512
Commitments to originate new loans
Financial commitments whose contractual amount represents credit risk
Total	308,480	256,877
Unused funds on commercial and other lines of credit
Financial commitments whose contractual amount represents credit risk
Total	1,075,159	1,146,415
Unadvanced funds on home equity lines of credit
Financial commitments whose contractual amount represents credit risk
Total	335,878	347,543
Unadvanced funds on construction and real estate loans
Financial commitments whose contractual amount represents credit risk
Total	365,235	467,702
Standby letters of credit
Financial commitments whose contractual amount represents credit risk
Total	$ 34,042	$ 18,975

OTHER COMMITMENTS, CONTINGENC_4

OTHER COMMITMENTS, CONTINGENCIES, AND OFF-BALANCE SHEET ACTIVITIES - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Tax credits investments	$ 10.9

SHAREHOLDERS' EQUITY AND EARN_3

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Schedule of Actual and Required Capital Ratios (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Total capital to risk-weighted assets
Total capital to risk-weighted assets, Actual Amount	$ 1,505,487	$ 1,371,740
Total capital to risk-weighted assets, Actual Ratio	0.1545	0.1436
Total capital to risk-weighted assets, Minimum Capital Requirement, Amount	$ 779,790	$ 764,130
Total capital to risk-weighted assets, Minimum Capital Requirement, Ratio	0.0800	0.0800
Common Equity Tier 1 Capital to risk weighted assets
Common Equity Tier 1 Capital to risk weighted assets,Actual Amount	$ 1,266,641	$ 1,149,620
Common Equity Tier 1 Capital to risk weighted assets, Actual Ratio	0.1299	0.1204
Common equity tier 1 capital to risk weighted assets Minimum Capital Requirement, Amount	$ 438,632	$ 429,823
Common equity tier 1 capital to risk weighted assets Minimum Capital Requirement, Ratio	0.0450	0.0450
Common equity tier 1 capital to risk weighted assets Minimum to be Well Capitalized Under Prompt Corrective Action Provisions, Ratio		0.0450
Tier 1 capital to risk-weighted assets
Tier 1 capital risk-weighted assets, Actual Amount	$ 1,289,029	$ 1,171,957
Tier 1 capital risk-weighted assets, Actual Ratio	0.1322	0.1227
Tier 1 capital risk-weighted assets, Minimum Capital Requirement, Amount	$ 584,843	$ 573,098
Tier 1 capital risk-weighted assets, Minimum Capital Requirement, Ratio	0.0600	0.0600
Tier 1 capital to average assets
Tier 1 capital to average assets, Actual Amount	$ 1,289,029	$ 1,171,957
Tier 1 capital to average assets, Actual Ratio	0.1097	0.0965
Tier 1 capital to average assets, Minimum Capital Requirement, Amount	$ 389,895	$ 382,065
Tier 1 capital to average assets, Minimum Capital Requirement, Ratio	0.0400	0.0400
Total risk-weighted assets	$ 9,747,379	$ 9,551,627
Subsidiaries
Total capital to risk-weighted assets
Total capital to risk-weighted assets, Actual Amount	$ 1,342,307	$ 1,268,037
Total capital to risk-weighted assets, Actual Ratio	0.1378	0.1329
Total capital to risk-weighted assets, Minimum Capital Requirement, Amount	$ 779,226	$ 763,503
Total capital to risk-weighted assets, Minimum Capital Requirement, Ratio	0.0800	0.0800
Total capital to risk-weighted assets, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 974,032	$ 954,379
Tier 1 capital to average assets, Minimum Capital Requirement, Ratio	0.1000	0.1000
Common Equity Tier 1 Capital to risk weighted assets
Common Equity Tier 1 Capital to risk weighted assets,Actual Amount	$ 1,225,075	$ 1,167,282
Common Equity Tier 1 Capital to risk weighted assets, Actual Ratio	0.1258	0.1223
Common equity tier 1 capital to risk weighted assets Minimum Capital Requirement, Amount	$ 438,314	$ 429,470
Common equity tier 1 capital to risk weighted assets Minimum to be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 633,121	$ 620,346
Common equity tier 1 capital to risk weighted assets Minimum to be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.0650	0.0650
Tier 1 capital to risk-weighted assets
Tier 1 capital risk-weighted assets, Actual Amount	$ 1,225,075	$ 1,167,282
Tier 1 capital risk-weighted assets, Actual Ratio	0.1258	0.1223
Tier 1 capital risk-weighted assets, Minimum Capital Requirement, Amount	$ 584,419	$ 572,627
Tier 1 capital risk-weighted assets, Minimum Capital Requirement, Ratio	0.0600	0.0600
Tier 1 capital risk-weighted assets, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 779,226	$ 763,503
Tier 1 capital risk-weighted assets, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.0800	0.0800
Tier 1 capital to average assets
Tier 1 capital to average assets, Actual Amount	$ 1,225,075	$ 1,167,282
Tier 1 capital to average assets, Actual Ratio	0.1044	0.0961
Tier 1 capital to average assets, Minimum Capital Requirement, Amount	$ 389,613	$ 381,751
Tier 1 capital to average assets, Minimum Capital Requirement, Ratio	0.0400	0.0400
Tier 1 capital to average assets, Minimum to be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 487,016	$ 477,189
Tier 1 capital to average assets, minimum to be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.0500	0.0500
Total risk-weighted assets	$ 9,740,322	$ 9,543,786

SHAREHOLDERS' EQUITY AND EARN_4

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Schedule of Components of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders’ equity	$ 1,167,424	$ 1,012,221	$ 954,062	$ 1,182,435
Accumulated other comprehensive (loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Total shareholders’ equity	(106,343)	(143,016)	(181,052)	(3,243)
Net unrealized holding (loss) on AFS securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive (loss), before tax:	(142,127)	(188,927)
Income taxes related to items of accumulated other comprehensive (loss):	37,716	49,401
Total shareholders’ equity	(104,410)	(139,525)	(175,557)	(1,398)
Net (loss) on effective cash flow hedging derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive (loss), before tax:	(3,037)	(4,265)
Income taxes related to items of accumulated other comprehensive (loss):	838	1,159
Total shareholders’ equity	(2,199)	(3,106)	(4,878)	0
Net unrealized holding (loss) on pension plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other accumulated comprehensive (loss), before tax:	365	(528)
Income taxes related to items of accumulated other comprehensive (loss):	(98)	144
Total shareholders’ equity	$ 266	$ (385)	$ (617)	$ (1,845)

SHAREHOLDERS' EQUITY AND EARN_5

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Schedule of Components of Other Comprehensive (Loss)/Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Gains (losses) arising during the period
Net of Tax	$ (161)	$ 19,325	$ (177,805)
Less: reclassification adjustment for gains realized in net income
Net of Tax	(36,834)	(18,711)	4
Other comprehensive income (loss)
Total other comprehensive income/(loss), before tax	48,921	50,678	(240,074)
Total income tax (expense)/benefit related to other comprehensive income/(loss)	(12,248)	(12,642)	62,265
Total other comprehensive (loss)/income	36,673	38,036	(177,809)
Net unrealized holding gain on AFS securities:
Gains (losses) arising during the period
Before Tax	(3,137)	22,903	(235,075)
Tax Effect	1,878	(5,122)	60,920
Net of Tax	(1,259)	17,781	(174,155)
Less: reclassification adjustment for gains realized in net income
Before Tax	(49,937)	(25,057)	6
Tax Effect	13,563	6,806	(2)
Net of Tax	(36,374)	(18,251)	4
Other comprehensive income (loss)
Total other comprehensive income/(loss), before tax	46,800	47,960	(235,081)
Total income tax (expense)/benefit related to other comprehensive income/(loss)	(11,685)	(11,928)	60,922
Total other comprehensive (loss)/income	35,115	36,032	(174,159)
Net gain on cash flow hedging derivatives:
Gains (losses) arising during the period
Before Tax	596	1,770	(6,667)
Tax Effect	(149)	(458)	1,789
Net of Tax	447	1,312	(4,878)
Less: reclassification adjustment for gains realized in net income
Before Tax	(632)	(632)	0
Tax Effect	172	172	0
Net of Tax	(460)	(460)	0
Other comprehensive income (loss)
Total other comprehensive income/(loss), before tax	1,228	2,402	(6,667)
Total income tax (expense)/benefit related to other comprehensive income/(loss)	(321)	(630)	1,789
Total other comprehensive (loss)/income	907	1,772	(4,878)
Net unrealized holding gain on pension plans
Gains (losses) arising during the period
Before Tax	893	316	1,674
Tax Effect	(242)	(84)	(446)
Net of Tax	651	232	1,228
Less: reclassification adjustment for gains realized in net income
Before Tax	0	0	0
Tax Effect	0	0	0
Net of Tax	0	0	0
Other comprehensive income (loss)
Total other comprehensive income/(loss), before tax	893	316	1,674
Total income tax (expense)/benefit related to other comprehensive income/(loss)	(242)	(84)	(446)
Total other comprehensive (loss)/income	$ 651	$ 232	$ 1,228

SHAREHOLDERS' EQUITY AND EARN_6

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Schedule of Gross Changes in Each Component of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ 1,012,221	$ 954,062	$ 1,182,435
Other comprehensive income before reclassifications	(161)	19,325	(177,805)
Amounts reclassified from accumulated other comprehensive income	(36,834)	(18,711)	4
Total other comprehensive (loss)/income	36,673	38,036	(177,809)
Ending balance	1,167,424	1,012,221	954,062
AOCI Attributable to Parent
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(143,016)	(181,052)	(3,243)
Total other comprehensive (loss)/income	36,673	38,036	(177,809)
Ending balance	(106,343)	(143,016)	(181,052)
Net unrealized holding (loss) on AFS securities
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(139,525)	(175,557)	(1,398)
Other comprehensive income before reclassifications	(1,259)	17,781	(174,155)
Amounts reclassified from accumulated other comprehensive income	(36,374)	(18,251)	4
Total other comprehensive (loss)/income	35,115	36,032	(174,159)
Ending balance	(104,410)	(139,525)	(175,557)
Net (loss) on effective cash flow hedging derivatives
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(3,106)	(4,878)	0
Other comprehensive income before reclassifications	447	1,312	(4,878)
Amounts reclassified from accumulated other comprehensive income	(460)	(460)	0
Total other comprehensive (loss)/income	907	1,772	(4,878)
Ending balance	(2,199)	(3,106)	(4,878)
Net unrealized holding (loss) on pension plans
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(385)	(617)	(1,845)
Other comprehensive income before reclassifications	651	232	1,228
Amounts reclassified from accumulated other comprehensive income	0	0	0
Total other comprehensive (loss)/income	651	232	1,228
Ending balance	$ 266	$ (385)	$ (617)

SHAREHOLDERS' EQUITY AND EARN_7

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Schedule of Amounts Reclassified out of Each Component of Accumulated Other Comprehensive (Loss)/Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-interest income	$ 23,325	$ 37,555	$ 20,133	$ (32,599)	$ (8,383)	$ 17,465	$ 17,094	$ 16,606	$ 48,414	$ 42,782	$ 68,937
Interest expense	(63,700)	(69,209)	(65,577)	(63,866)	(62,116)	(57,687)	(52,666)	(34,783)
Non-interest expense	86,855	88,059	88,532	88,140	88,421	90,334	92,759	97,533	351,586	369,047	344,597
Tax expense (benefit)	$ (6,948)	$ (10,645)	$ (7,210)	$ 6,291	$ 4,509	$ (3,741)	$ (3,944)	$ (5,548)	(18,512)	(8,724)	(21,285)
Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Income/(loss) available to common shareholders									(36,834)	(18,711)	4
Realized (losses)/gains on AFS securities: | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-interest income									(49,937)	(25,057)	6
Tax expense (benefit)									13,563	6,806	(2)
Income/(loss) available to common shareholders									(36,374)	(18,251)	4
Net (loss) on effective cash flow hedging derivatives | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest expense									(632)	(632)	0
Non-interest expense									0	0	0
Tax expense (benefit)									172	172	0
Income/(loss) available to common shareholders									(460)	(460)	0
Realized (losses) on pension plans: | Reclassification out of Accumulated Other Comprehensive Income
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Non-interest expense									0	0	0
Tax expense (benefit)									0	0	0
Income/(loss) available to common shareholders									$ 0	$ 0	$ 0

SHAREHOLDERS' EQUITY AND EARN_8

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Schedule of Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Earnings Per Share Basic and Diluted [Line Items]
Net income	$ 19,657	$ 37,509	$ 24,025	$ (20,188)	$ (1,445)	$ 19,545	$ 23,861	$ 27,637	$ 61,003	$ 69,598	$ 92,533
Average number of common shares issued (in shares)									51,903	51,903	51,903
Less: average number of treasury shares (in shares)									8,593	7,820	5,577
Less: average number of unvested stock award shares (in shares)									802	795	762
Average number of basic common shares outstanding (in shares)	42,661	42,170	42,437	42,777	42,852	43,164	43,443	43,693	42,508	43,288	45,564
Average number of diluted common shares outstanding (in shares)	43,064	42,454	42,508	43,028	43,101	43,347	43,532	44,036	42,761	43,504	45,914
Basic earnings per share (in dollars per share)	$ 0.46	$ 0.89	$ 0.57	$ (0.47)	$ (0.03)	$ 0.45	$ 0.55	$ 0.63	$ 1.44	$ 1.61	$ 2.03
Diluted earnings per share (in dollars per share)	$ 0.46	$ 0.88	$ 0.57	$ (0.47)	$ (0.03)	$ 0.45	$ 0.55	$ 0.63	$ 1.43	$ 1.60	$ 2.02
Unvested stock awards
Earnings Per Share Basic and Diluted [Line Items]
Plus: dilutive effect of stock (in shares)									253	216	345
Stock options outstanding
Earnings Per Share Basic and Diluted [Line Items]
Plus: dilutive effect of stock (in shares)									0	0	5

SHAREHOLDERS' EQUITY AND EARN_9

SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Narrative (Details) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Stock Options Outstanding
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share, amount (in shares)	43	49	64

STOCK-BASED COMPENSATION PLAN_2

STOCK-BASED COMPENSATION PLANS - Narrative (Details) - USD ($) $ / shares in Units, shares in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation cost	$ 8,300,000	$ 7,500,000	$ 7,300,000
Total recognized tax benefit	$ 2,300,000	$ 2,000,000	$ 2,000,000
Weighted average fair value of stock awards granted (in USD per share)	$ 23.25	$ 26.18	$ 28.75
Vesting period	5 years
Total fair value of awards vested	$ 4,500,000	$ 5,600,000	$ 5,100,000
Unrecognized stock-based compensation expense	$ 10,100,000
Expected weighted-average period for recognition of unrecognized compensation	2 years
Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total compensation cost		1,000	13,000
Total recognized tax benefit		200	3,000
Vesting period	5 years
Unrecognized stock-based compensation expense	$ 0	0	1,000
Contractual life	10 years
Weighted average remaining contractual term for options outstanding	1 year
Total intrinsic value	$ 31,000	$ 0	$ 62,000
2022 Equity Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under the plan (in shares)	1.2
Number of shares available for grant under the plan (in shares)	0.8
2022 Equity Compensation Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares counted against the share limit for each stock granted	100%
2022 Equity Compensation Plan | Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares counted against the share limit for each stock granted	100%

STOCK-BASED COMPENSATION PLAN_3

STOCK-BASED COMPENSATION PLANS - Schedule of Activity in the Stock Award and Stock Option Plans (Details) - $ / shares	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Non-vested Stock Awards Outstanding
Number of Shares
Balance at the beginning of the period (in shares)	785,000
Granted (in shares)	500,000
Stock awards vested (in shares)	(359,000)
Forfeited (in shares)	(130,000)
Expired (in shares)	0
Balance at the end of the period (in shares)	796,000	785,000
Weighted- Average Grant Date Fair Value
Balance at the beginning of the period (in USD per share)	$ 24.92
Granted (in USD per share)	23.25	$ 26.18	$ 28.75
Stock awards vested (in USD per share)	12.56
Forfeited (in USD per share)	25.55
Expired (in USD per share)	0
Balance at the end of the period (in USD per share)	$ 24.94	$ 24.92
Stock Options Outstanding
Number of Shares
Balance at the beginning of the period (in shares)	49,000
Granted (in shares)	0
Exercised (in shares)	(5,000)
Forfeited (in shares)	0
Expired (in shares)	0
Balance at the end of the period (in shares)	44,000	49,000
Weighted- Average Exercise Price
Balance at the beginning of the period (in USD per share)	$ 26.46
Granted (in USD per share)	0
Stock options exercised (in USD per share)	24.71
Forfeited (in USD per share)	0
Expired (in USD per share)	0
Balance at the end of the period (in USD per share)	$ 26.65	$ 26.46

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	Dec. 31, 2024	Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	$ 5,300	$ 6,100
Fair Value	655,723	1,022,285
Marketable equity securities	655	13,029
Capitalized servicing rights	17,700	16,600
U.S Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	6,989	7,981
Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	60,864	63,853
Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	36,357	39,115
Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value		656
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	5,258	6,142
Fair Value	655,723	1,022,285
Marketable equity securities	655	13,029
Loans held for investment	8,984,103	8,768,108
Loans held for sale	3,076	2,237
Derivative assets	47,923	45,668
Derivative liabilities	79,039	75,957
Recurring | Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	5,258	6,142
Marketable equity securities	655	13,029
Loans held for investment	325	374
Loans held for sale	3,076	2,237
Derivative assets	47,923	45,668
Capitalized servicing rights	1,706	1,526
Derivative liabilities	79,039	75,957
Recurring | Fair Value | U.S Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	6,989	7,981
Recurring | Fair Value | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	60,864	63,853
Recurring | Fair Value | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	264,562	347,874
Recurring | Fair Value | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	220,240	417,480
Recurring | Fair Value | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	66,711	145,326
Recurring | Fair Value | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	36,357	39,115
Recurring | Fair Value | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value		656
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	0	0
Fair Value	6,989	7,981
Marketable equity securities	0	13,029
Loans held for investment	0	0
Loans held for sale	0	0
Derivative assets	0	0
Derivative liabilities	0	0
Level 1 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	0	0
Marketable equity securities	0	13,029
Loans held for investment	0	0
Loans held for sale	0	0
Derivative assets	0	0
Capitalized servicing rights	0	0
Derivative liabilities	0	0
Level 1 | Recurring | U.S Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	6,989	7,981
Level 1 | Recurring | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 1 | Recurring | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 1 | Recurring | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 1 | Recurring | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 1 | Recurring | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 1 | Recurring | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value		0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	0	0
Fair Value	644,833	1,010,381
Marketable equity securities	655	0
Loans held for investment	0	0
Loans held for sale	3,076	2,237
Derivative assets	47,799	45,613
Derivative liabilities	79,039	75,957
Level 2 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	0	0
Marketable equity securities	655	0
Loans held for investment	0	0
Loans held for sale	3,076	2,237
Derivative assets	47,799	45,613
Capitalized servicing rights	0	0
Derivative liabilities	79,039	75,957
Level 2 | Recurring | U.S Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 2 | Recurring | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	60,864	63,853
Level 2 | Recurring | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	264,562	347,874
Level 2 | Recurring | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	220,240	417,480
Level 2 | Recurring | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	66,711	145,326
Level 2 | Recurring | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	32,456	35,192
Level 2 | Recurring | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value		656
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	5,258	6,142
Fair Value	3,901	3,923
Marketable equity securities	0	0
Loans held for investment	8,984,103	8,768,108
Loans held for sale	0	0
Derivative assets	124	55
Derivative liabilities	0	0
Level 3 | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading security, at fair value	5,258	6,142
Marketable equity securities	0	0
Loans held for investment	325	374
Loans held for sale	0	0
Derivative assets	124	55
Capitalized servicing rights	1,706	1,526
Derivative liabilities	0	0
Level 3 | Recurring | U.S Treasuries
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 3 | Recurring | Municipal bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 3 | Recurring | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 3 | Recurring | Agency residential mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 3 | Recurring | Agency commercial mortgage-backed securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Level 3 | Recurring | Corporate bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 3,901	3,923
Level 3 | Recurring | Other bonds and obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value

FAIR VALUE MEASUREMENTS - Narra

FAIR VALUE MEASUREMENTS - Narrative (Details)	12 Months Ended
	Dec. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jan. 01, 2020 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Transfers to Level 3	$ 0	$ 0
Fair value write down	3,080,000	33,136,000
Continuing Operations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains in fair value of loans held for sale included in earnings			$ 169,000
Payments for origination of mortgage loans held-for-sale	184,000,000	85,000,000	20,000,000
Proceeds from sale and collection of loans held-for-sale	182,000,000	84,000,000	$ 25,000,000
Loans Held For Sale | Continuing Operations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gains in fair value of loans held for sale included in earnings	$ 29,000	$ 17,000
Impact of ASC 326 adoption | Loans Held for Investment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value write down				$ 11,200,000
Trading Security
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of securities in the portfolio (security) | security	1

FAIR VALUE MEASUREMENTS - Sch_2

FAIR VALUE MEASUREMENTS - Schedule of Loans Held for Investment (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Loans Held for Sale
Aggregate Unpaid Principal	$ 6,930	$ 10,938
Level 2 | Recurring | Loans Held for Investment | Continuing Operations
Loans Held for Sale
Loans held for investment	325	374
Aggregate Unpaid Principal	6,541	8,809
Aggregate Fair Value Less Aggregate Unpaid Principal	$ (6,216)	$ (8,435)

FAIR VALUE MEASUREMENTS - Sch_3

FAIR VALUE MEASUREMENTS - Schedule of Loans Held for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Loans Held for Sale
Aggregate Unpaid Principal	$ 6,930	$ 10,938
Level 2
Loans Held for Sale
Aggregate Fair Value	3,076	2,237
Recurring | Level 2
Loans Held for Sale
Aggregate Fair Value	3,076	2,237
Continuing Operations | Recurring | Level 2 | Loans Held For Sale
Loans Held for Sale
Aggregate Fair Value	3,076	2,237
Aggregate Unpaid Principal	3,015	2,205
Aggregate Fair Value Less Aggregate Unpaid Principal	$ 61	$ 32

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	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Commitments to lend
Changes in Level 3 assets that were measured at fair value on a recurring basis
Unrealized gains (losses) relating to instruments still held at the end of the period	$ 90	$ 34
Derivative Asset (Liability)
Beginning balance	34	17
Unrealized gain/(loss), net recognized in other non-interest income	1,256	305
Transfers to loans held for sale	(1,200)	(288)
Ending balance	90	34
Forward Commitments
Changes in Level 3 assets that were measured at fair value on a recurring basis
Unrealized gains (losses) relating to instruments still held at the end of the period	34	21
Derivative Asset (Liability)
Beginning balance	21	8
Unrealized gain/(loss), net recognized in other non-interest income	13	13
Ending balance	34	21
Trading Security
Changes in Level 3 assets that were measured at fair value on a recurring basis
Balance at the beginning of the period	6,142	6,708
Paydown of asset	(905)	(860)
Balance at the end of the period	5,258	6,142
Unrealized gains (losses) relating to instruments still held at the end of the period	(39)	(60)
Derivative Asset (Liability)
Unrealized gain/(loss), net recognized in other non-interest income	21	294
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	3,923	4,000
Unrealized (loss) in included in accumulated other comprehensive loss	(22)	(77)
Balance at the end of the period	3,901	3,923
Unrealized gains (losses) relating to instruments still held at the end of the period	(99)	(77)
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	374	605
Paydown of asset	(76)	(103)
Balance at the end of the period	325	374
Unrealized gains (losses) relating to instruments still held at the end of the period	0	0
Derivative Asset (Liability)
Unrealized gain/(loss), net recognized in other non-interest income	27	(128)
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	1,526	1,846
Balance at the end of the period	1,706	1,526
Unrealized gains (losses) relating to instruments still held at the end of the period	0	0
Derivative Asset (Liability)
Unrealized gain/(loss), net recognized in other non-interest income	$ 180	$ (320)

FAIR VALUE MEASUREMENTS - Sch_5

FAIR VALUE MEASUREMENTS - Schedule of Quantitative Information about the Significant Unobservable Inputs within Level 3 (Details) $ in Thousands	Dec. 31, 2024 USD ($) uSDPerLoan	Dec. 31, 2023 USD ($) uSDPerLoan
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Trading security, at fair value	$ 5,258	$ 6,142
Securities available for sale, at fair value	655,723	1,022,285
Commitments	47,923	45,668
Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities available for sale, at fair value	3,901	3,923
Level 3 | Recurring
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Trading security, at fair value	5,258	6,142
Loans held for investment	325	374
Total	11,314	12,020
Level 3 | Recurring | Commitments to lend
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments	90	34
Level 3 | Recurring | Forward Commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments	34	21
Level 3 | Recurring | Capitalized Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized Servicing Rights	1,706	1,526
Level 3 | Recurring | Securities Available for Sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities available for sale, at fair value	$ 3,901	$ 3,923
Level 3 | Recurring | Discount Rate | Discounted Cash Flow
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Trading Security, significant unobservable input value	0.0336	0.0419
Loans held for investment, Significant Unobservable Input Value	0.2500	0.2500
Level 3 | Recurring | Discount Rate | Discounted Cash Flow | Capitalized Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized Servicing Rights, Significant Unobservable Input Value	0.1009	0.1108
Level 3 | Recurring | Price | Indication from Market Maker | Securities Available for Sale
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Securities Available for Sale, Significant Unobservable Input Value	0.9753	0.9807
Level 3 | Recurring | Collateral Value | Discounted Cash Flow | Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for investment, Significant Unobservable Input Value	0	0
Level 3 | Recurring | Collateral Value | Discounted Cash Flow | Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Loans held for investment, Significant Unobservable Input Value	18.8	18.3
Level 3 | Recurring | Closing Ratio | Historical Trend | Commitments to lend
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments, Significant Unobservable Input Value	0.8321	0.8429
Level 3 | Recurring | Closing Ratio | Historical Trend | Forward Commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments, Significant Unobservable Input Value	0.8321	0.8429
Level 3 | Recurring | Origination Costs, per loan | Pricing Model | Commitments to lend
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments, Significant Unobservable Input Value | uSDPerLoan	3,000	3,000
Level 3 | Recurring | Origination Costs, per loan | Pricing Model | Forward Commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Commitments, Significant Unobservable Input Value | uSDPerLoan	3,000	3,000
Level 3 | Recurring | Constant prepayment rate (CPR) | Discounted Cash Flow | Capitalized Servicing Rights
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized Servicing Rights, Significant Unobservable Input Value	0.0721	0.0763

FAIR VALUE MEASUREMENTS - Sch_6

FAIR VALUE MEASUREMENTS - Schedule of Non-recurring Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized servicing rights	$ 17,700	$ 16,600
Non-recurring | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans	2,195	4,395
Capitalized servicing rights	10,084	10,569
Total Assets	$ 12,279	$ 14,964

FAIR VALUE MEASUREMENTS - Sch_7

FAIR VALUE MEASUREMENTS - Schedule of Significant Unobservable Inputs for Non-recurring Assets (Details) $ in Thousands	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized servicing rights	$ 17,700	$ 16,600
Non-recurring | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans	2,195	4,395
Capitalized servicing rights	10,084	10,569
Total Assets	12,279	14,964
Non-recurring | Fair value of collateral | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans	$ 2,195	$ 4,395
Non-recurring | Minimum | Discounted Cash Flow- Loss Severity | Fair value of collateral | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans, Measurement inputs, range	(1)	(1)
Non-recurring | Minimum | Appraised value | Fair value of collateral | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans, Measurement inputs, range	0	0
Non-recurring | Maximum | Discounted Cash Flow- Loss Severity | Fair value of collateral | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans, Measurement inputs, range	(0.0003)	(0.0008)
Non-recurring | Maximum | Appraised value | Fair value of collateral | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans, Measurement inputs, range	180	3,389
Non-recurring | Weighted Average | Discounted Cash Flow- Loss Severity | Fair value of collateral | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans, Measurement inputs, range	(0.6697)	(0.6700)
Non-recurring | Weighted Average | Appraised value | Fair value of collateral | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Individually evaluated loans, Measurement inputs, range	153	2,774
Non-recurring | Capitalized Servicing Rights | Discounted cash flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized servicing rights	$ 10,084	$ 10,569
Non-recurring | Capitalized Servicing Rights | Minimum | Constant prepayment rate (CPR) | Discounted cash flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized servicing rights, Measurement input	0.0487	0.0543
Non-recurring | Capitalized Servicing Rights | Minimum | Discount rate | Discounted cash flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized servicing rights, Measurement input	0.1047	0.1009
Non-recurring | Capitalized Servicing Rights | Maximum | Constant prepayment rate (CPR) | Discounted cash flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized servicing rights, Measurement input	0.1458	0.1715
Non-recurring | Capitalized Servicing Rights | Maximum | Discount rate | Discounted cash flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized servicing rights, Measurement input	0.1297	0.1659
Non-recurring | Capitalized Servicing Rights | Weighted Average | Constant prepayment rate (CPR) | Discounted cash flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized servicing rights, Measurement input	0.1333	0.1231
Non-recurring | Capitalized Servicing Rights | Weighted Average | Discount rate | Discounted cash flow | Level 3
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Capitalized servicing rights, Measurement input	0.1156	0.1382

FAIR VALUE MEASUREMENTS - Sch_8

FAIR VALUE MEASUREMENTS - Schedule of Estimated Non-recurring Fair Value of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Financial Assets
Trading security, at fair value	$ 5,300	$ 6,100
Marketable equity securities	655	13,029
Securities available for sale, at fair value	655,723	1,022,285
Securities held to maturity	433,382	476,228
FHLB stock and restricted equity securities	19,565	22,689
Accrued interest receivable	49,410	53,096
Financial Liabilities
Accrued interest payable	9,005	13,766
Carrying Amount
Financial Assets
Cash and cash equivalents	1,128,409	1,203,244
Trading security, at fair value	5,258	6,142
Marketable equity securities	655	13,029
Securities available for sale, at fair value	655,723	1,022,285
Securities held to maturity	507,658	543,351
FHLB stock and restricted equity securities	19,565	22,689
Net loans	9,270,294	8,934,329
Loans held for sale	3,076	2,237
Accrued interest receivable	49,410	53,096
Derivative assets	47,923	45,668
Financial Liabilities
Total deposits	10,375,204	10,633,384
Short-term debt	103,500	260,000
Long-term FHLB advances	212,982	125,223
Subordinated notes	121,612	121,363
Accrued interest payable	9,005	13,766
Derivative liabilities	79,039	75,957
Fair Value
Financial Assets
Cash and cash equivalents	1,128,409	1,203,244
Trading security, at fair value	5,258	6,142
Marketable equity securities	655	13,029
Securities available for sale, at fair value	655,723	1,022,285
Securities held to maturity	433,382	476,228
Net loans	8,984,103	8,768,108
Loans held for sale	3,076	2,237
Accrued interest receivable	49,410	53,096
Derivative assets	47,923	45,668
Financial Liabilities
Total deposits	10,367,636	10,615,655
Short-term debt	103,635	260,035
Long-term FHLB advances	209,736	123,747
Subordinated notes	110,447	98,138
Accrued interest payable	9,005	13,766
Derivative liabilities	79,039	75,957
Level 1
Financial Assets
Cash and cash equivalents	1,128,409	1,203,244
Trading security, at fair value	0	0
Marketable equity securities	0	13,029
Securities available for sale, at fair value	6,989	7,981
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 FHLB advances	0	0
Subordinated notes	0	0
Accrued interest payable	0	0
Derivative liabilities	0	0
Level 2
Financial Assets
Cash and cash equivalents	0	0
Trading security, at fair value	0	0
Marketable equity securities	655	0
Securities available for sale, at fair value	644,833	1,010,381
Securities held to maturity	432,280	474,742
Net loans	0	0
Loans held for sale	3,076	2,237
Accrued interest receivable	49,410	53,096
Derivative assets	47,799	45,613
Financial Liabilities
Total deposits	10,367,636	10,615,655
Short-term debt	103,635	260,035
Long-term FHLB advances	209,736	123,747
Subordinated notes	110,447	98,138
Accrued interest payable	9,005	13,766
Derivative liabilities	79,039	75,957
Level 3
Financial Assets
Cash and cash equivalents	0	0
Trading security, at fair value	5,258	6,142
Marketable equity securities	0	0
Securities available for sale, at fair value	3,901	3,923
Securities held to maturity	1,102	1,486
Net loans	8,984,103	8,768,108
Loans held for sale	0	0
Accrued interest receivable	0	0
Derivative assets	124	55
Financial Liabilities
Total deposits	0	0
Short-term debt	0	0
Long-term FHLB advances	0	0
Subordinated notes	0	0
Accrued interest payable	0	0
Derivative liabilities	$ 0	$ 0

CONDENSED FINANCIAL STATEMENT_3

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Schedule of CONDENSED BALANCE SHEETS (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Assets
Cash due from Berkshire Bank	$ 182,776	$ 148,148
Other assets	358,442	341,757
Total assets	12,273,408	12,430,821
Liabilities and Shareholders’ Equity
Subordinated notes	121,612	121,363
Shareholders’ equity	1,167,424	1,012,221	$ 954,062	$ 1,182,435
Total liabilities and shareholders’ equity	12,273,408	12,430,821
Reportable legal entity | Berkshire Hills Bancorp
Assets
Cash due from Berkshire Bank	163,605	98,452
Investment in subsidiaries	1,134,014	1,038,039
Other assets	218	399
Total assets	1,297,837	1,136,890
Liabilities and Shareholders’ Equity
Subordinated notes	121,612	121,363
Accrued expenses	8,801	3,306
Shareholders’ equity	1,167,424	1,012,221
Total liabilities and shareholders’ equity	$ 1,297,837	$ 1,136,890

CONDENSED FINANCIAL STATEMENT_4

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Schedule of CONDENSED STATEMENTS OF OPERATIONS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Income:
Total net revenue	$ 110,180	$ 125,614	$ 108,665	$ 55,541	$ 80,038	$ 107,799	$ 109,853	$ 114,139	$ 400,000	$ 411,829	$ 413,534
Interest expense									262,352	207,252	42,660
Non-interest expense	77,575	71,960	70,931	76,020	78,992	76,513	74,048	71,955	296,486	301,508	288,716
Income tax (benefit)	6,948	10,645	7,210	(6,291)	(4,509)	3,741	3,944	5,548	18,512	8,724	21,285
Net income/(loss)	$ 19,657	$ 37,509	$ 24,025	$ (20,188)	$ (1,445)	$ 19,545	$ 23,861	$ 27,637	61,003	69,598	92,533
Comprehensive income/(loss)									97,676	107,634	(85,276)
Reportable legal entity | Berkshire Hills Bancorp
Income:
Dividends from subsidiaries									14,000	62,000	108,000
Other									53	50	23
Total net revenue									14,053	62,050	108,023
Interest expense									5,697	5,697	7,044
Non-interest expense									9,121	3,702	2,754
Total expense									14,818	9,399	9,798
Income before income taxes and equity in undistributed income of subsidiaries									(765)	52,651	98,225
Income tax (benefit)									(2,463)	(2,500)	(2,586)
Income before equity in undistributed income of subsidiaries									1,698	55,151	100,811
Equity in undistributed results of operations of subsidiaries									59,305	14,447	(8,278)
Net income/(loss)									61,003	69,598	92,533
Comprehensive income/(loss)									$ 97,676	$ 107,634	$ (85,276)

CONDENSED FINANCIAL STATEMENT_5

CONDENSED FINANCIAL STATEMENTS OF PARENT COMPANY - Schedule of CONDENSED STATEMENTS OF CASH FLOWS (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows from operating activities:
Net income	$ 19,657	$ 37,509	$ 24,025	$ (20,188)	$ (1,445)	$ 19,545	$ 23,861	$ 27,637	$ 61,003	$ 69,598	$ 92,533
Adjustments to reconcile net income to net cash provided by operating activities:
Other, net									2,922	14,387	(12,076)
Net cash provided by operating activities									125,206	157,156	110,739
Cash flows from investing activities:
Net cash (used) by investing activities									(317,250)	(284,461)	(1,260,886)
Cash flows from financing activities:
Proceeds from issuance of long term debt									0	0	98,032
Net proceeds from common stock									100,000	0	0
Payment to repurchase common stock									(17,536)	(23,844)	(124,519)
Common and preferred stock cash dividends paid									(30,940)	(31,707)	(24,527)
Net cash provided by financing activities									117,209	645,194	207,695
Net change in cash and cash equivalents									(74,835)	517,889	(942,452)
Cash and cash equivalents at beginning of year				1,203,244				685,355	1,203,244	685,355	1,627,807
Cash and cash equivalents at end of year	1,128,409				1,203,244				1,128,409	1,203,244	685,355
Reportable legal entity | Berkshire Hills Bancorp
Cash flows from operating activities:
Net income									61,003	69,598	92,533
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed results of operations of subsidiaries									(59,305)	(14,447)	8,278
Other, net									11,569	8,688	5,998
Net cash provided by operating activities									13,267	63,839	106,809
Cash flows from investing activities:
Sale of securities									0	0	0
Net cash (used) by investing activities									0	0	0
Cash flows from financing activities:
Repayment of long term debt									0	0	(75,000)
Net proceeds from common stock									100,000	0	0
Payment to repurchase common stock									(17,536)	(23,844)	(124,519)
Common and preferred stock cash dividends paid									(30,940)	(31,707)	(24,527)
Other, net									362	142	281
Net cash provided by financing activities									51,886	(55,409)	(125,733)
Net change in cash and cash equivalents									65,153	8,430	(18,924)
Cash and cash equivalents at beginning of year				$ 98,452				$ 90,022	98,452	90,022	108,946
Cash and cash equivalents at end of year	$ 163,605				$ 98,452				$ 163,605	$ 98,452	$ 90,022

QUARTERLY DATA (UNAUDITED) (Det

QUARTERLY DATA (UNAUDITED) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Quarterly Financial Information Disclosure [Abstract]
Interest and dividend income	$ 150,555	$ 157,268	$ 154,109	$ 152,006	$ 150,537	$ 148,021	$ 145,425	$ 132,316	$ 613,938	$ 576,299	$ 387,257
Interest expense	63,700	69,209	65,577	63,866	62,116	57,687	52,666	34,783
Net interest income	86,855	88,059	88,532	88,140	88,421	90,334	92,759	97,533	351,586	369,047	344,597
Non-interest income	23,325	37,555	20,133	(32,599)	(8,383)	17,465	17,094	16,606	48,414	42,782	68,937
Total net revenue	110,180	125,614	108,665	55,541	80,038	107,799	109,853	114,139	400,000	411,829	413,534
Provision expense for credit losses	6,000	5,500	6,499	6,000	7,000	8,000	8,000	8,999	23,999	31,999	11,000
Non-interest expense	77,575	71,960	70,931	76,020	78,992	76,513	74,048	71,955	296,486	301,508	288,716
Income before income taxes	26,605	48,154	31,235	(26,479)	(5,954)	23,286	27,805	33,185	79,515	78,322	113,818
Income tax expense/(benefit)	6,948	10,645	7,210	(6,291)	(4,509)	3,741	3,944	5,548	18,512	8,724	21,285
Net income/(loss)	$ 19,657	$ 37,509	$ 24,025	$ (20,188)	$ (1,445)	$ 19,545	$ 23,861	$ 27,637	$ 61,003	$ 69,598	$ 92,533
Basic earnings per share (in USD per share)	$ 0.46	$ 0.89	$ 0.57	$ (0.47)	$ (0.03)	$ 0.45	$ 0.55	$ 0.63	$ 1.44	$ 1.61	$ 2.03
Diluted earnings per share (in USD per share)	$ 0.46	$ 0.88	$ 0.57	$ (0.47)	$ (0.03)	$ 0.45	$ 0.55	$ 0.63	$ 1.43	$ 1.60	$ 2.02
Weighted average common shares outstanding:
Basic (in shares)	42,661	42,170	42,437	42,777	42,852	43,164	43,443	43,693	42,508	43,288	45,564
Diluted (in shares)	43,064	42,454	42,508	43,028	43,101	43,347	43,532	44,036	42,761	43,504	45,914

NET INTEREST INCOME AFTER PRO_3

NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Banking and Thrift, Interest [Abstract]
Net interest income	$ 86,855	$ 88,059	$ 88,532	$ 88,140	$ 88,421	$ 90,334	$ 92,759	$ 97,533	$ 351,586	$ 369,047	$ 344,597
Provision expense for credit losses	6,000	5,500	6,499	6,000	7,000	8,000	8,000	8,999	23,999	31,999	11,000
Net interest income after provision for credit losses									327,587	337,048	333,597
Total non-interest income	23,325	37,555	20,133	(32,599)	(8,383)	17,465	17,094	16,606	48,414	42,782	68,937
Total non-interest expense	77,575	71,960	70,931	76,020	78,992	76,513	74,048	71,955	296,486	301,508	288,716
Income before income taxes	26,605	48,154	31,235	(26,479)	(5,954)	23,286	27,805	33,185	79,515	78,322	113,818
Income tax expense	$ 6,948	$ 10,645	$ 7,210	$ (6,291)	$ (4,509)	$ 3,741	$ 3,944	$ 5,548	18,512	8,724	21,285
Net income									$ 61,003	$ 69,598	$ 92,533

TAX EQUITY INVESTMENTS - Narrat

TAX EQUITY INVESTMENTS - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
Tax credits investments	$ 35,597	$ 16,644
Delayed equity contributions	18,743	0
Non-income tax related activity	0	8,000
Impairment loss	$ 0	$ 0
Investment Program, Proportional Amortization Method, Applied, Non-Income-Tax-Related Activity and Other Return, Statement of Cash Flows [Extensible Enumeration]	Other Noncash Income (Expense)	Other Noncash Income (Expense)
Investment Program, Proportional Amortization Method, Applied, Non-Income-Tax-Related Activity and Other Return, Statement of Income or Comprehensive Income [Extensible Enumeration]	Non-interest expense	Non-interest expense

TAX EQUITY INVESTMENTS - Delaye

TAX EQUITY INVESTMENTS - Delayed Equity Contributions Associated Were Estimated To Be Paid (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract]
2025	$ 11,680
2026	3,921
2027	2,887
2028	18
Thereafter	237
Total delayed equity contributions	$ 18,743	$ 0

TAX EQUITY INVESTMENTS - Income

TAX EQUITY INVESTMENTS - Income Tax Credits and Other Income Tax Benefits, Amortization Expense, Total Provision For Income Taxes (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($)
Equity Method Investments and Joint Ventures [Abstract]
Amortization of tax credit investments	$ (10,420)
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, after Amortization, Statement of Income or Comprehensive Income [Extensible Enumeration]	Income tax expense
Tax credit and other tax benefit/(expense)	$ 11,934
Investment Program, Proportional Amortization Method, Elected, Income Tax Credit and Other Income Tax Benefit, after Amortization, Statement of Cash Flows [Extensible Enumeration]	Income tax expense
Investment Program Proportional Amortization Method Elected Income Tax Credit And Other Income Tax Benefit After Amortization Statement Of Cash Flows Extensible Enumeration Not Disclosed Flag	Income tax expense
Total provision for income taxes	$ 1,514

REVENUE (Details)

REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Non-interest income (in-scope of Topic 606)									$ 43,222	$ 42,752	$ 40,874
Non-interest income (out-of-scope of Topic 606)									5,192	30	28,063
Total non-interest income	$ 23,325	$ 37,555	$ 20,133	$ (32,599)	$ (8,383)	$ 17,465	$ 17,094	$ 16,606	48,414	42,782	68,937
Service charges on deposit accounts
Disaggregation of Revenue [Line Items]
Non-interest income (in-scope of Topic 606)									24,084	24,160	22,396
Wealth management fees
Disaggregation of Revenue [Line Items]
Non-interest income (in-scope of Topic 606)									10,840	10,197	10,008
Interchange income
Disaggregation of Revenue [Line Items]
Non-interest income (in-scope of Topic 606)									$ 8,298	$ 8,395	$ 8,470

BRANCH SALE- Narrative (Details

BRANCH SALE- Narrative (Details) $ in Millions	3 Months Ended	12 Months Ended
	Sep. 30, 2024 branch transaction	Dec. 31, 2024 USD ($) buyer
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration]		Gain on sale of business operations and assets, net
Sold | Branch Sales
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of branches sold | branch	10
Number of branches buyers | buyer		3
Number of separate transactions | transaction	3
Deposit		$ 383
Loans sold		50
Pre tax gain		$ 16

PENDING MERGER - Narrative (Det

PENDING MERGER - Narrative (Details)	Dec. 31, 2024 $ / shares	Dec. 31, 2023 $ / shares
Business Acquisition [Line Items]
Common stock, par value (in USD per share)	$ 0.01	$ 0.01
Brookline Bancorp, Inc.
Business Acquisition [Line Items]
Business combination, conversion ratio	0.42
Brookline Common Stock
Business Acquisition [Line Items]
Common stock, par value (in USD per share)	$ 0.01