COLUMBIA FINANCIAL, INC., 10-K filed on 3/6/2026
Annual Report
v3.25.4
Cover Page - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Feb. 02, 2026
Jun. 30, 2025
Cover [Abstract]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2025    
Current Fiscal Year End Date --12-31    
Document Transition Report false    
Entity File Number 001-38456    
Entity Registrant Name COLUMBIA FINANCIAL, INC.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 22-3504946    
Entity Address, Address Line One 19-01 Route 208 North,    
Entity Address, City or Town Fair Lawn,    
Entity Address, State or Province NJ    
Entity Address, Postal Zip Code 07410    
City Area Code 800    
Local Phone Number 522-4167    
Title of 12(b) Security Common stock, par value $0.01 per share    
Trading Symbol CLBK    
Security Exchange Name NASDAQ    
Entity Well-known Seasoned Filer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category 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     $ 354.6
Entity Common Stock, Shares Outstanding (in shares)   104,118,378  
Documents Incorporated by Reference Portions of the Registrant’s Proxy Statement for the 2026 Annual Meeting of Stockholders, if filed within 120 days of the fiscal year ended December 31, 2025, are incorporated by reference into Part III of this Form 10-K    
Entity Central Index Key 0001723596    
Document Fiscal Year Focus 2025    
Document Fiscal Period (Q1,Q2,Q3,FY) FY    
Amendment Flag false    
v3.25.4
Audit Information
12 Months Ended
Dec. 31, 2025
Audit Information [Abstract]  
Auditor Firm ID 185
Auditor Name KPMG LLP
Auditor Location New York, New York
v3.25.4
Consolidated Statements of Financial Condition - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Assets    
Cash and due from banks $ 340,695 $ 289,113
Short-term investments 111 110
Total cash and cash equivalents 340,806 289,223
Debt securities available for sale, at fair value 1,122,017 1,025,946
Debt securities held to maturity, at amortized cost (fair value of $367,289 and $350,153 at December 31, 2025 and 2024, respectively) 396,233 392,840
Equity securities, at fair value 6,802 6,673
Federal Home Loan Bank stock 64,604 60,387
Loans receivable 8,292,010 7,916,928
Less: allowance for credit losses 67,201 59,958
Loans receivable, net 8,224,809 7,856,970
Accrued interest receivable 41,490 40,383
Office properties and equipment, net 82,985 81,772
Bank-owned life insurance ("BOLI") 283,094 274,908
Goodwill and intangible assets 120,302 121,008
Other real estate owned 0 1,334
Other assets 335,651 324,049
Total assets 11,018,793 10,475,493
Liabilities:    
Deposits 8,444,079 8,096,149
Borrowings 1,183,472 1,080,600
Advance payments by borrowers for taxes and insurance 45,792 45,453
Accrued expenses and other liabilities 184,722 172,915
Total liabilities 9,858,065 9,395,117
Stockholders' equity:    
Preferred stock, $0.01 par value. 10,000,000 shares authorized; none issued and outstanding at December 31, 2025 and 2024 0 0
Common stock, $0.01 par value. 500,000,000 shares authorized; 131,624,028 shares issued and 103,984,649 shares outstanding at December 31, 2025, and 131,414,591 shares issued and 104,759,185 shares outstanding at December 31, 2024 1,316 1,314
Additional paid-in capital 806,581 799,482
Retained earnings 933,717 881,951
Accumulated other comprehensive loss (75,972) (110,368)
Treasury stock, at cost; 27,639,379 shares at December 31, 2025 and 26,655,406 shares at December 31, 2024 (476,133) (460,980)
Common stock held by the Employee Stock Ownership Plan (27,935) (30,207)
Stock held by Rabbi Trust (3,479) (3,255)
Deferred compensation obligations 2,633 2,439
Total stockholders' equity 1,160,728 1,080,376
Total liabilities and stockholders' equity $ 11,018,793 $ 10,475,493
v3.25.4
Consolidated Statements of Financial Condition (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Statement of Financial Position [Abstract]    
Debt securities held to maturity $ 367,289 $ 350,153
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 500,000,000 500,000,000
Common stock, shares issued (in shares) 131,624,028 131,414,591
Common stock, shares outstanding (in shares) 103,984,649 104,759,185
Treasury stock, shares (in shares) 27,639,379 26,655,406
v3.25.4
Consolidated Statements of Income (Loss) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Interest income:      
Loans receivable $ 403,173 $ 382,266 $ 343,770
Debt securities available for sale and equity securities 39,866 36,411 28,120
Debt securities held to maturity 11,438 9,966 9,708
Federal funds and interest-earning deposits 11,125 15,181 8,188
Federal Home Loan Bank stock dividends 5,349 7,602 5,192
Total interest income 470,951 451,426 394,978
Interest expense:      
Deposits 197,374 202,383 125,162
Borrowings 51,943 71,061 63,940
Total interest expense 249,317 273,444 189,102
Net interest income 221,634 177,982 205,876
Provision for credit losses 9,822 14,451 4,787
Net interest income after provision for credit losses 211,812 163,531 201,089
Non-interest income:      
Bank-owned life insurance 8,186 7,319 10,126
Loan fees and service charges 5,866 4,483 4,510
Gain (loss) on securities transactions 290 (35,851) (10,847)
Change in fair value of equity securities 873 2,594 695
Gain on sale of loans 928 906 1,214
Gain on sale of real estate owned 281 0 0
Other non-interest income 9,557 13,431 14,136
Total non-interest income 37,069 1,894 27,379
Non-interest expense:      
Compensation and employee benefits 119,152 109,489 120,846
Occupancy 24,475 23,482 22,927
Federal deposit insurance premiums 6,800 7,581 8,639
Advertising 2,416 2,510 2,805
Professional fees 10,755 14,164 9,824
Data processing and software expenses 17,128 15,578 15,039
Merger-related expenses 214 1,665 606
Loss on extinguishment of debt 0 3,447 300
Other non-interest expense (48) 3,419 1,431
Total non-interest expense 180,892 181,335 182,417
Income (loss) before income tax expense (benefit) 67,989 (15,910) 46,051
Income tax expense (benefit) 16,223 (4,257) 9,965
Net income (loss) $ 51,766 $ (11,653) $ 36,086
Earnings (loss) per share - basic (in dollars per share) $ 0.51 $ (0.11) $ 0.35
Earnings (loss) per share - diluted (in dollars per share) $ 0.51 $ (0.11) $ 0.35
Weighted average shares outstanding - basic (in shares) 101,810,752 101,676,758 102,656,388
Weighted average shares outstanding - diluted (in shares) 101,810,752 101,839,507 102,894,969
Demand deposit account fees      
Non-interest income:      
Revenue $ 8,054 $ 6,507 $ 5,145
Title insurance fees      
Non-interest income:      
Revenue $ 3,034 $ 2,505 $ 2,400
v3.25.4
Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Cash flows from operating activities:      
Net income (loss) $ 51,766 $ (11,653) $ 36,086
Adjustments to reconcile net income to net cash provided by operating activities:      
Amortization of deferred loan costs, fees and purchased premiums and discounts 6,347 4,437 5,606
Net amortization of premiums and discounts on securities (3,745) (819) 1,440
Net amortization of mortgage servicing rights 214 241 239
Amortization of intangible assets 2,171 2,191 2,350
Depreciation and amortization of office properties and equipment 8,602 8,221 7,767
Amortization of operating lease right-of-use assets 4,045 3,904 3,916
Loss on extinguishment of debt 0 3,447 300
Provision for credit losses 9,822 14,451 4,787
(Gain) loss on securities transactions (290) 35,851 10,847
Change in fair value of equity securities (873) (2,594) (695)
Gain on securitizations (129) 0 0
Gain on sale of loans, net (799) (906) (1,214)
Gain on sale of other real estate owned (281) 0 0
Loss on write-down of other real estate owned 0 640 0
Loss (gain) on disposal of office properties and equipment, net 21 (188) 168
Deferred tax expense (benefit) 14,151 (5,986) 3,375
Increase in accrued interest receivable (1,107) (1,038) (5,447)
Increase in other assets (29,432) (12,440) (33,992)
Increase (decrease) in accrued expenses and other liabilities 7,980 (7,298) 3,282
Income on bank-owned life insurance (8,186) (7,319) (10,126)
Employee stock ownership plan expense 3,414 3,808 4,095
Stock based compensation 4,736 6,497 7,979
Increase in deferred compensation obligations under Rabbi Trust (30) (126) (47)
Net cash provided by operating activities 68,397 33,321 40,716
Cash flows from investing activities:      
Proceeds from sales of debt securities available for sale 15,656 321,233 277,022
Proceeds from sales of equity securities 698 0 0
Proceeds from paydown/maturities/calls of debt securities available for sale 214,062 157,531 100,855
Proceeds from paydown/maturities/calls of debt securities held to maturity 31,466 50,112 20,221
Purchases of debt securities available for sale (272,138) (404,743) (124,618)
Purchases of debt securities held to maturity (33,369) (41,502) 0
Proceeds from sales of loans held-for-sale 35,375 18,895 121,372
Purchases of loans receivable (150,882) (78,719) (14,729)
Net (increase) decrease in loans receivable (281,192) 2,249 (311,299)
Proceeds from bank-owned life insurance death benefits 0 5 1,364
Proceeds from redemptions of Federal Home Loan Bank stock 35,320 57,720 91,132
Purchases of Federal Home Loan Bank stock (39,537) (37,085) (114,040)
Proceeds from sales of office properties and equipment 0 1,218 0
Additions to office properties and equipment (9,836) (7,446) (7,635)
Proceeds from sales of other real estate owned 1,615 0 0
Purchase of insurance agency book of business (1,400) 0 0
Net cash (used in) provided by investing activities (454,162) 39,468 39,645
Cash flows from financing activities:      
Net increase (decrease) in deposits 347,930 249,593 (154,603)
Proceeds from long-term borrowings 175,333 271,205 536,113
Payments on long-term borrowings (104,418) (484,922) (11,300)
Net increase (decrease) in short-term borrowings 31,957 (237,825) (93,165)
Repayment of term note 0 0 (30,300)
Increase (decrease) in advance payments by borrowers for taxes and insurance 339 1,944 (1,951)
Issuance of common stock for restricted stock awards 0 0 10
Purchase of treasury stock (13,351) (5,894) (80,497)
Exercise of stock options (1) (99) (24)
Repurchase of shares for taxes (441) (817) (623)
Net cash provided by (used in) financing activities 437,348 (206,815) 163,660
Net increase (decrease) in cash and cash equivalents 51,583 (134,026) 244,021
Cash and cash equivalents at beginning of year 289,223 423,249 179,228
Cash and cash equivalents at end of year 340,806 289,223 423,249
Cash paid during the period for:      
Interest on deposits and borrowings 249,917 274,376 183,568
Income tax payments, net of refunds 2 940 9,253
Non-cash investing and financing activities:      
Transfer of loans receivable to other real estate owned 0 1,974 0
Transfer of loans receivable to loans held-for-sale 34,727 18,079 120,955
Securitization of loans 13,340 0 0
Excise tax on net stock repurchases $ 137 $ 42 $ 800
v3.25.4
Consolidated Statements of Comprehensive Income - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Statement of Comprehensive Income [Abstract]      
Net income (loss) $ 51,766 $ (11,653) $ 36,086
Other comprehensive income, net of tax:      
Unrealized gain on debt securities available for sale 26,504 55,994 29,637
Accretion of unrealized gain (loss) on debt securities reclassified as held to maturity 2 3 (10)
Reclassification adjustment for gain (loss) included in net income 209 (25,871) (7,794)
Total other comprehensive (loss) income, available-for-sale securities and held-to-maturity adjustments, net of tax 26,715 30,126 21,833
Derivatives, net of tax:      
Unrealized (loss) gain on swap contracts accounted for as cash flow hedges (3,273) 1,779 (918)
Total derivative, net of tax (3,273) 1,779 (918)
Employee benefit plans, net of tax:      
Amortization of prior service cost included in net income (102) (71) (40)
Reclassification adjustment of actuarial net gain (loss) included in net income 66 (963) (558)
Change in funded status of retirement obligations 10,990 17,496 244
Total employee benefit plans, net of tax 10,954 16,462 (354)
Total other comprehensive income 34,396 48,367 20,561
Total comprehensive income, net of tax $ 86,162 $ 36,714 $ 56,647
v3.25.4
Consolidated Statements of Changes in Stockholders' Equity - USD ($)
$ in Thousands
Total
Restricted Stock
Common Stock
Common Stock
Restricted Stock
Additional Paid-in-Capital
Additional Paid-in-Capital
Restricted Stock
Retained Earnings
Accumulated Other Comprehensive (Loss)
Treasury Stock
Common Stock Held by the Employee Stock Ownership Plan
Stock Held by Rabbi Trust
Deferred Compensation Obligations
Balance at beginning of period at Dec. 31, 2022 $ 1,053,595   $ 1,309   $ 781,165   $ 857,518 $ (179,296) $ (371,708) $ (34,750) $ (3,149) $ 2,506
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Net income 36,086           36,086          
Other comprehensive income 20,561             20,561        
Issuance of common stock   $ 10   $ 3   $ 7            
Stock based compensation 7,979       7,979              
Purchase of treasury stock shares (80,497)               (80,497)      
Exercise of stock options (24)       (24)              
Restricted stock forfeitures 0       500       (500)      
Repurchase shares for taxes (623)               (623)      
Excise Tax on net stock repurchases (800)               (800)      
Employee Stock Ownership Plan shares committed to be released 4,095       1,823         2,272    
Funding of deferred compensation obligations (47)                   194 (241)
Balance at end of year at Dec. 31, 2023 1,040,335   1,312   791,450   893,604 (158,735) (454,128) (32,478) (2,955) 2,265
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Net income (11,653)           (11,653)          
Other comprehensive income 48,367             48,367        
Issuance of common stock   0   2   (2)            
Stock based compensation 6,497       6,497              
Purchase of treasury stock shares (5,894)               (5,894)      
Exercise of stock options (99)       (99)              
Restricted stock forfeitures 0       99       (99)      
Repurchase shares for taxes (817)               (817)      
Excise Tax on net stock repurchases (42)               (42)      
Employee Stock Ownership Plan shares committed to be released 3,808       1,537         2,271    
Funding of deferred compensation obligations (126)                   (300) 174
Balance at end of year at Dec. 31, 2024 1,080,376   1,314   799,482   881,951 (110,368) (460,980) (30,207) (3,255) 2,439
Increase (Decrease) in Stockholders' Equity [Roll Forward]                        
Net income 51,766           51,766          
Other comprehensive income 34,396             34,396        
Issuance of common stock   $ 0   $ 2   $ (2)            
Stock based compensation 4,736       4,736              
Purchase of treasury stock shares (13,351)               (13,351)      
Exercise of stock options (1)       (1)              
Restricted stock forfeitures 0       1,224       (1,224)      
Repurchase shares for taxes (441)               (441)      
Excise Tax on net stock repurchases (137)               (137)      
Employee Stock Ownership Plan shares committed to be released 3,414       1,142         2,272    
Funding of deferred compensation obligations (30)                   (224) 194
Balance at end of year at Dec. 31, 2025 $ 1,160,728   $ 1,316   $ 806,581   $ 933,717 $ (75,972) $ (476,133) $ (27,935) $ (3,479) $ 2,633
v3.25.4
Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) - shares
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Treasury stock, shares purchased (in shares) 873,304 365,116 4,242,693
Exercise of stock options (in shares) 5,837 86,920 44,117
Restricted stock, shares forfeited (in shares) 83,287 5,930 29,806
Repurchased shares for taxes (in shares) 27,382 47,997 33,667
Restricted Stock      
Issuance of common stock (in shares) 209,256 250,830 247,646
v3.25.4
Business
12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Business BusinessOn December 1, 2021, the Company completed its acquisition of Freehold Bancorp, MHC, Freehold Bancorp, Inc. and Freehold Bank (collectively, the "Freehold Entities" or "Freehold"). Pursuant to the terms of the Merger Agreement, Freehold Bancorp, MHC merged with and into the MHC, with the MHC as the surviving entity; and Freehold Bancorp, Inc. merged with and into Columbia Financial, with Columbia Financial as the surviving entity. In connection with the merger, Freehold Bank converted to a federal savings bank and operated as a wholly-owned subsidiary of Columbia Financial, Inc. until October 5, 2024, when the Company merged Freehold Bank into Columbia Bank. Under the terms of the Merger Agreement, upon the merger of the two banks, depositors of Freehold Bank became depositors of Columbia Bank and have the same rights and privileges in the MHC as if their accounts had been established at Columbia Bank on the date established at Freehold Bank. The Company issued 2,591,007 shares of its common stock to the MHC, representing an amount equal to the fair value of the Freehold Entities as determined by an independent appraiser, at the effective time of the holding company mergers.
v3.25.4
Summary of Significant Accounting Policies
12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Summary of Significant Accounting Policies Summary of Significant Accounting Policies
Principles of Consolidation

The accompanying consolidated financial statements include the accounts of Columbia Financial, Inc., its wholly-owned subsidiaries, Columbia Bank ("Columbia") (including the accounts of Freehold Bank, which merged with an into Columbia effective as of October 5, 2024), and Columbia's wholly-owned subsidiaries, Columbia Investment Services, Inc., 1901 Residential Management Co. LLC, First Jersey Title Services, Inc., 1901 Commercial Management Co. LLC, Stewardship Realty LLC, Columbia Insurance Services, Inc., and 19-01 Community Development Corporation, (collectively, the “Company”). In May 2024, Columbia dissolved its wholly-owned subsidiary 2500 Broadway Corp. and CSB Realty Corp, a wholly-owned subsidiary of 2500 Broadway Corp. The accounts of the MHC are not consolidated in the consolidated financial statements of the Company. In consolidation, all intercompany accounts and transactions are eliminated. Certain reclassifications have been made in the consolidated financial statements to conform to current year classifications.

The Company also owns 100% of the common stock of Stewardship Statutory Trust I (the "Trust"), a statutory business trust incorporated in Delaware which was acquired in the Company's merger with Stewardship Financial in November 2019. In accordance with ASC Topic 810, Consolidation, the Trust was classified as a variable interest entity and did not satisfy the conditions for consolidation. Accordingly, the Trust, which owns $7.0 million of trust preferred securities, which represents 100% of the Trust's assets, is treated as an unconsolidated subsidiary.

Basis of Financial Statement Presentation

The consolidated financial statements of the Company have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”), including the elimination of all significant intercompany accounts and transactions during consolidation. In preparing the consolidated financial statements, management is required to make estimates, significant judgments and assumptions that affect the reported amounts of assets and liabilities as of the dates of the Consolidated Statements of Financial Condition and Consolidated Statements of Income for the periods presented. Actual results could differ from these judgments and estimates under different conditions, resulting in a change that could have a material impact on the carrying values of our assets and liabilities and our results of operations. Material estimates that involve significant judgements and assumptions that are particularly susceptible to change are the determination of the adequacy of the allowance for credit losses, evaluation of the need for valuation allowances on deferred tax assets, evaluation of goodwill for impairment, evaluation of other-than-temporary impairment on securities, and determination of liabilities related to retirement and other post-retirement benefits. These estimates, significant judgements and assumptions are evaluated on an ongoing basis and are adjusted when facts and circumstances dictate. Illiquid credit markets, volatile securities markets, and declines in the housing market and the economy generally have combined to increase the uncertainty inherent in such estimates and assumptions. Changes in estimates resulting from continuing changes in the economic environment will be reflected in the consolidated financial statements in future periods.

Cash and Cash Equivalents

Cash and cash equivalents include cash on hand, amounts due from banks, interest-bearing deposits at other financial institutions and short-term investments.
(2)    Summary of Significant Accounting Policies (continued)    

Securities

Securities are classified as available for sale and held to maturity. Management determines the appropriate classification of securities at the time of purchase. Securities that management has the positive intent and ability to hold to maturity are classified as held to maturity and reported at amortized cost. Securities not classified as held to maturity are classified as available for sale and carried at estimated fair value, with unrealized holding gains or losses, net of taxes, reported as a separate component of accumulated other comprehensive income or loss ("OCI") included in stockholders' equity.

In accordance with ASC Topic 326, Financial Instruments Credit Losses, for available for sale securities, the Company first assesses whether a loss is from credit or other factors and considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and adverse conditions 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 is less than the amortized cost, a credit loss would be recorded through an allowance for credit losses, limited by the amount that the fair value is less than the amortized cost basis.

The fair values of these securities are based on market quotations or matrix pricing as discussed in note 17. The Company evaluates securities for other-than-temporary impairment at each reporting period and more frequently when economic or market conditions warrant such evaluation. In this evaluation, if such declines were deemed other-than-temporary, management would measure the total credit-related component of the unrealized loss and recognize that portion of the loss as a charge to current period earnings. The remaining portion of the unrealized loss would be recognized as an adjustment to OCI. The fair value of the securities portfolio is significantly affected by changes in interest rates. In general, as interest rates rise, the fair value of fixed-rate securities decreases and as interest rates fall, the fair value of fixed-rate securities increases. The Company determines if it has the intent to sell securities or if its more likely than not that the Company would be required to sell the securities before the anticipated recovery. If either exists, the decline in value is considered other-than-temporary and would be recognized in current period earnings.
    
Premiums and discounts on securities are generally amortized and accreted to income over the contractual lives of the securities using the level-yield method. Premiums on callable securities are amortized to the earliest call date. Dividend and interest income are recognized when earned. Realized gains and losses are recognized when securities are sold or called based on the specific identification method.

In the ordinary course of business, securities are pledged as collateral in conjunction with the Company’s borrowings, lines of credit, and public funds on deposit.

Federal Home Loan Bank Stock

The Bank, as a member of the Federal Home Loan Bank of New York (the "FHLB"), is required to hold shares of capital stock of the FHLB based on its activities, primarily its outstanding borrowings. The investment is carried at cost, or par value, which approximates fair value. Cash dividends are reported as income.

Loans Held-for-Sale

Loans held-for-sale consists of loans intended for sale in the secondary market. These loans are carried at the lower of cost or estimated fair value, less costs to sell, as determined on an individual loan basis. Net unrealized losses, if any, are recognized in a valuation allowance through a charge to earnings. Origination fees and costs on loans held-for-sale are deferred and recognized on settlement dates as a component of the gain or loss on sale. Loans held-for-sale are generally sold with loan servicing rights retained by the Bank.

Loans Receivable

Loans receivable are carried at unpaid principal balances adjusted by unamortized premiums and unearned discounts, net deferred origination fees and costs, purchase accounting fair value adjustments and the allowance for credit losses. The Company defers loan origination fees and certain direct loan origination costs and accretes such amounts as an adjustment to the yield over the expected lives of the related loans using the level-yield method. Interest income on loans is accrued on unpaid principal balances and credited to income as earned. Premiums and discounts on loans purchased are amortized or accreted as an adjustment to yield over the contractual lives of the related loans using methodologies which approximate the level-yield method.
(2)    Summary of Significant Accounting Policies (continued)

Loans Receivable (continued)

A loan is considered delinquent when payment has not been received within 30 days of its contractual due date, or when the Company does not expect to receive all principal and interest payments owned substantially in accordance with the terms of the loan agreement, regardless of the past due status. Generally, a loan is designated as a non-accrual loan when the payment is 90 days or more in arrears of its contractual due date, or if the following criteria are met: i) the current debt-service coverage ratio is equal to or is in excess of 1.0x; ii) the guarantor does not demonstrate the capacity to support the annual debt service requirement; and iii) the loan-to-value percentage is greater than 90%. Non-accruing loans are returned to accrual status after there has been a sustained period of repayment performance and both principal and interest are deemed collectible.

When a loan is placed on non-accrual status, any interest accrued but not received is reversed against interest income. Payments received on a non-accrual loan are either applied to the outstanding principal balance or recorded as interest income, depending on an assessment of the ability to collect the loan. The Company identifies loans that may need to be charged-off as a loss by reviewing all delinquent loans, classified loans, and other loans for which management may have concerns about collectability.

The Company may evaluate individual loans for which it is probable, based on current information, that the Company will not collect all amounts due under the contractual terms of the loan agreement. The Company considers the population of loans in its analysis to include loans not accruing interest and loan modifications. Other loans may be included in the population of loans to be evaluated if management has specific information of a collateral shortfall. Loans individually analyzed are measured based on the fair value of collateral if the loan is collateral dependent, or cash flows discounted at the loan-level effective interest rate. Payments received on individually analyzed loans are recognized on a cash basis.

Purchased Credit-Deteriorated ("PCD") Loans

Loans acquired in a business combination that have experienced more than insignificant deterioration in credit quality since origination are considered purchased credit deterioration (“PCD”) loans. The Company evaluated acquired loans for deterioration in credit quality based on any of, but not limited to, the following: (1) non-accrual status; (2) loan modification; (3) risk ratings of special mention, substandard or doubtful; and (4) delinquency status. At the acquisition date, an estimate of expected credit losses is made for groups of PCD loans with similar risk characteristics and individual PCD loans without similar risk characteristics. This initial allowance for credit losses is allocated to individual PCD loans and added to the purchase price or acquisition date fair values to establish the initial amortized cost basis of the PCD loans. As the initial allowance for credit losses is added to the purchase price, there is no credit loss expense recognized upon acquisition of a PCD loan. Any difference between the unpaid principal balance of PCD loans and the amortized cost basis is considered to relate to noncredit factors and results in a discount or premium.

Discounts and premiums are recognized through interest income on a level-yield method over the life of the loans. For acquired loans not deemed PCD at acquisition, the differences between the initial fair value and the unpaid principal balance are recognized as interest income on a level-yield basis over the lives of the related loans. At the acquisition date, an initial allowance for expected credit losses is estimated and recorded as credit loss expense.

Other Real Estate Owned ("OREO")

OREO is comprised of properties acquired in partial or total satisfaction of problem loans. The properties are recorded at fair value less estimated costs to sell on the date acquired or on the date that the Company acquires effective control over the property. Gains or losses arising at the time of acquisition of such properties are charged against the allowance for credit losses. During the holding period, OREO continues to be measured at the lower of cost or fair value less estimated costs to sell. Subsequent declines in value are expensed as incurred. Gains and losses realized from the sale of OREO, as well as valuation adjustments and expenses of operation, are included in non-interest expense.

Allowance for Credit Losses on Loans Receivable

The determination of the allowance for credit losses (“ACL”) on loans is considered a critical accounting estimate by management because of the high degree of judgment involved in determining qualitative loss factors, the subjectivity of the assumptions used, and the potential for changes in the forecasted economic environment. The ACL is maintained at a level management considers adequate to provide for estimated losses and impairment based upon an evaluation of known and inherent risk in the loan portfolio. The ACL consists of two elements: (1) identification of loans that must be individually analyzed for impairment and (2) establishment of an ACL for loans collectively analyzed.
(2)    Summary of Significant Accounting Policies (continued)

Allowance for Credit Losses on Loans Receivable (continued)

Portfolio segments are defined at the level which an entity develops and documents a systematic methodology to determine its allowance for credit losses. Management developed segments for estimating losses based on the type of borrower and collateral which is generally based upon federal call report segmentation. The segments have been combined, or sub-segments have been added as needed to ensure loans of similar risk profiles are appropriately pooled.

We maintain a loan review system that provides a periodic review of the loan portfolio and the identification of individually analyzed loans. The ACL for individually analyzed loans is based on the fair value of collateral or cash flows. While management uses current information available to make such evaluations, future adjustments to the allowance may be necessary if economic conditions differ substantially from the assumptions used in making the evaluations.

The ACL quantitative allowance for each segment is measured using a discounted cash flow methodology incorporating an econometric, probability of default ("PD") and loss given default ("LGD") with distinct segment-specific multi-variate regression models applied. Expected credit losses are estimated over the life of the loans by measuring the difference between the net present value of modeled cash flows and amortized cost basis. Contractual cash flows over the contractual life of the loans are the basis for the modeled cash flows, adjusted for model defaults and expected prepayments and discounted at the loan-level effective interest rate. The contractual term excludes expected extensions, renewals, and modifications.

Management estimates the ACL using relevant and reliable information from internal and external sources, related to past events, current conditions, and a reasonable and supportable forecast. Historical credit loss experience for both the Company and its segment-specific peers provides the basis for the estimate of expected credit losses. Credit losses over a defined period are converted to PD rate curves through the use of segment-specific LGD risk factors that convert default rates to loss severity based on industry-level, observed relationships between the two variables for each segment, primarily due to the nature of the underlying collateral. These risk factors were assessed for reasonableness against the Company’s own loss experience and adjusted in certain cases when the relationship between the Company’s historical default and loss severity deviate from that of the wider industry. The historical PD curves, together with corresponding economic conditions, establish a quantitative relationship between economic conditions and loan performance through an economic cycle.

Using the historical relationship between economic conditions and loan performance, management’s expectation of future loan performance is incorporated using a single economic forecast of macroeconomic variables (i.e., unemployment, gross domestic product, vacancy, and home price index). This forecast is applied over a period that management has determined to be reasonable and supportable. Beyond the period over which management can develop or source a reasonable and supportable forecast, the model reverts to long-term average historical loss rates using a straight-line, time-based methodology. The Company's current forecast period is six quarters, with a four-quarter reversion period to long-term average historical loss rates.

After quantitative considerations, management applies additional qualitative adjustments that consider the expected impact of certain factors not fully captured in the quantitative reserve. Qualitative adjustments include but are not limited to concentrations of large loan balances, delinquency trends, change in collateral values within segments, and other considerations.

The ACL is established through the provision for credit losses that are charged to income, which is based upon an evaluation of estimated losses in the current loan portfolio, including the evaluation of individually analyzed loans. Charge-offs against the ACL are taken on loans where management determines that the collection of loan principal and interest is unlikely. Recoveries made on loans that have been charged-off are credited to the ACL. Although we believe we have established and maintained the ACL on loans at appropriate levels, changes in reserves may be necessary if actual economic and other conditions differ substantially from the forecast used in estimating the ACL.

Our financial results are affected by the changes in and the level of the ACL. This process involves our analysis of internal and external variables, and it requires that we exercise judgment to estimate an appropriate ACL. As a result of the uncertainty associated with this subjectivity, we cannot assure the precision of the amount reserved, should we experience sizable loan losses in any particular period and/or significant changes in assumptions or economic condition. We believe the primary risks inherent in the portfolio are a general decline in the economy, a decline in real estate market values, rising unemployment, increasing vacancy rates, and increases in interest rates in the absence of economic improvement or any other such factors. Any one or a combination of these events may adversely affect a borrower's ability to repay its loan, resulting in increased delinquencies and loan losses. Accordingly, we have recorded loan credit losses at a level which is estimated to represent the current risk in its loan portfolio.
(2)    Summary of Significant Accounting Policies (continued)

Allowance for Credit Losses on Loans Receivable (continued)

For our non-performing loans, the allowance is determined on an individual basis using the present value of the expected cash flows, or for collateral dependent loans, the fair value less estimated costs to sell. We continue to assess the collateral of loans and update our appraisals on these loans on an annual basis. To the extent the property values decline, there could be additional losses on these non-performing assets, which may be material. Management considered these market conditions in deriving the estimated ACL. Should economic difficulties occur, the ultimate amount of loss could vary from our current estimate.

Allowance for Credit Losses on Unfunded Commitments

The Company is required to include unfunded commitments that are expected to be funded in the future within the allowance calculation, other than those that are unconditionally cancellable. To arrive at that reserve, the reserve percentage for each applicable segment is applied to the unused portion of the expected commitment balance and is multiplied by the expected funding rate. To determine the expected funding rate, the Company uses a historical utilization rate for each segment. The allowance for credit losses for off-balance-sheet exposures is reported in other liabilities in the Consolidated Statements of Financial Condition. The liability represents an estimate of expected credit losses arising from off-balance-sheet exposures such as unfunded commitments.

Loan Modifications

The Company assesses all loan modifications to determine whether one is granted to a borrower experiencing financial difficulty, regardless of whether the modified loans terms include a concession. Modifications made to borrowers experiencing financial difficulty may include principal or interest forgiveness, forbearance, interest rate reductions, term extensions, or a combination of these events intended to minimize economic loss and to avoid foreclosure or repossession of collateral.

The Company evaluates whether the modifications represent a new loan or a continuation of an existing loan. A modification or refinancing results in a new loan if the terms of the new loan are at least favorable to the Company and customers with similar collection risks who are not refinancing or restructuring their loan, and the modification to the terms of the loan is deemed to be more than minor. A modification is considered to be more than minor if the difference between the present value of the cash flows of the new obligation and the remaining cash flows of the original obligation, both discounted using the effective interest rate of the original debt, is 10% or greater.

If a modification does not meet the definition of a new loan, the modified loan will be treated as a continuation of the existing loan and all unamortized net fees and/or costs, and any prepayment penalties will be carried forward as part of the net new loan balance.

Modified loans that were accruing prior to their modification where income was reasonably assured subsequent to the modification, maintain their accrual status. Modified loans for which collectability was not reasonably assured, are placed on non-accrual status, interest accruals cease, and uncollected accrued interest is reversed and charged against current income. Non-accruing modified loans may be returned to accrual status when there is a sustained period of repayment performance (generally six consecutive months of payments), and both principal and interest are deemed collectible.

Loans Sold and Serviced

The Company periodically sells loans to investors and retains the servicing of these loans for a fee. Gains or losses on the sale of loans are recorded on trade date using the specific-identification method.

Office Properties and Equipment

Land is carried at cost. Office properties, land and building improvements, furniture and equipment, and leasehold improvements are carried at cost, less accumulated depreciation and amortization. Depreciation and amortization of office properties and equipment is computed on a straight-line basis over their estimated useful lives (generally 40 years for buildings, 10 years to 20 years for land and building improvements, 2 years to 10 years for furniture and equipment). Leasehold improvements, carried at cost, net of accumulated depreciation, are amortized over the terms of the related leases or the estimated useful lives of the assets, whichever is shorter. Major improvements are capitalized, while repairs and maintenance costs are charged to expense as incurred. Upon retirement or sale, any gain or loss is recognized as incurred.
(2)    Summary of Significant Accounting Policies (continued)

Bank-owned Life Insurance ("BOLI")

Bank-owned life insurance is accounted for using the cash surrender value method and is recorded at its net realizable value. The change in the net asset value is recorded as a component of non-interest income. A deferred liability has been recorded for the estimated cost of post-retirement life insurance benefits accruing to applicable employees and directors covered by an endorsement split-dollar life insurance arrangement.

Goodwill and Intangible Assets

Intangible assets of the Company consist of goodwill, core deposit intangibles, and mortgage servicing rights. Goodwill represents the excess of the purchase price over the fair value of net assets acquired in purchase acquisitions. In accordance with GAAP, goodwill with an indefinite useful life is not amortized, but is evaluated for impairment on an annual basis, or more frequently if events or changes in circumstances indicate potential impairment between annual measurement dates. As permitted by GAAP, the Company prepares a qualitative assessment in determining whether goodwill may be impaired. The factors considered in the assessment include macroeconomic conditions, industry and market conditions and overall financial performance of the Company, among others. The Company completed its annual goodwill impairment test as of December 31, 2025, based upon its qualitative assessment of goodwill and concluded that goodwill was not impaired and no further quantitative analysis was warranted.

Core deposit intangibles represent the intangible value of depositor relationships acquired by the Company through purchase acquisitions of Stewardship, Freehold and RSI. The premiums ascribed to these deposits are amortized over their estimated useful lives.

Mortgage servicing rights are recorded when purchased or when originated mortgage loans are sold, with servicing rights retained. Mortgage servicing rights are amortized on an accelerated method based upon the estimated lives of the related loans and generally adjusted for prepayments. Mortgage servicing rights are carried at the lower of amortized cost or fair value.

Leases

The Company determines if an arrangement is a lease at inception. The Company's leases primarily relate to real estate property for branches and office space. All the Company's leases are classified as operating leases and the related right-of-use asset ("ROU") and lease liability are included in other assets and other liabilities, respectively on the Consolidated Statements of Financial Condition.

ROU assets represent the Company’s right to use an underlying asset for the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease arrangements. The calculated amounts of the ROU asset and lease liabilities are impacted by the length of the lease term and the discount rate used to calculate the present value of minimum lease payments. As the Company's leases do not provide an implicit rate, the discount rate used in determining the lease liability for each individual lease is the Company's incremental borrowing rate. The present value of the lease liability may include the impact of options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options provided in the lease terms. Operating lease expense is recognized on a straight-line basis over the lease term, while variable lease payments are recognized as incurred. Lease agreements that include lease and non-lease components, such as common area maintenance charges, are accounted for separately.

Post-retirement Benefits

The Company provides certain health care and life insurance benefits to eligible retired employees under a Post-retirement Plan. The Company accrues the cost of retiree health care and other benefits during the employee's period of active service. Effective January 1, 2019, the Post-retirement Plan was closed to new hires.

Through the acquisition of the RSI Entities, the Company acquired a non-funded Post-retirement Plan. This defined benefit post-retirement healthcare plan covers substantially all retirees and employees. Effective January 1, 2024, the RSI Post-retirement Plan was merged into the Columbia Bank Post-retirement Plan.

Employee Benefit Plans

The Company maintains a single employer, tax-qualified defined benefit pension plan (the "Pension Plan") which covers full-time employees that satisfy the Pension Plan's eligibility requirements. The benefits are based on years of service and the employee's average compensation for the highest five consecutive years of employment. Effective October 1, 2018, newly hired employees are not eligible to participate in the Pension Plan as the Pension Plan was closed to new employees as of that date.
(2)    Summary of Significant Accounting Policies (continued)

Employee Benefit Plans (continued)

The policy is to fund at least the minimum contribution required by the Employee Retirement Income Security Act of 1974. GAAP requires an employer to: (a) recognize in its statement of financial position the over-funded or under-funded status of a defined benefit post-retirement plan measured as the difference between the fair value of plan assets and the benefit obligation; (b) measure a plan’s assets and its obligations that determine its funded status at the end of the employer’s fiscal year (with limited exceptions); and (c) recognize as a component of other comprehensive income (loss), net of tax, the actuarial gains and losses and the prior service costs and credits that arise during the period. The assets of the plan are primarily invested in fixed income and equity funds.

In connection with the acquisition of the RSI Entities, the Company acquired a funded pension plan. The benefits are based on years of service and the employee’s compensation, as defined. The Plan was amended effective March 31, 2011, to freeze the Plan so that no employee shall commence or recommence participation in the Plan, that there shall be no further benefit accruals under the Plan, and that compensation received after the effective date shall not be recognized for any purpose under the Plan. Effective September 30, 2023, the RSI Pension Plan was merged into the Columbia Bank Pension Plan.

The Company also maintains a Retirement Income Maintenance Plan (the "RIM Plan") which is a non-qualified defined benefit plan which provides benefits to all employees of the Company if their benefits under the Pension Plan are limited by Internal Revenue Code Sections 415 and 401(a)(17).    

Columbia Bank has a 401(k) plan covering substantially all employees. Columbia Bank may match a percentage of the first 3.00% to 4.50% contributed by participants. Columbia's matching contribution, if any, is determined by their Board of Directors in its sole discretion.

Columbia Bank has an Employee Stock Ownership Plan ("ESOP"). The funds borrowed by the ESOP from the Company to purchase the Company's common stock are being repaid from Columbia Bank's contributions over a period of 20 years. The Company's common stock not allocated to participants is recorded as a reduction of stockholders' equity at cost. Compensation expense for the ESOP is based on the average price of the Company's stock and the amount of shares committed to be allocated during each period.

Columbia Bank has a Supplemental Executive Retirement Plan ("SERP"). The SERP is a non-qualified plan which provides supplemental retirement benefits to eligible officers (those designated by the Board of Directors) of the Company who are prevented from receiving the full benefits contemplated by the ESOP's benefit formulas under tax law limits for tax-qualified plans. In addition, the Company maintains a stock based deferral plan (the "Stock Based Deferral Plan") for certain executives and directors. The Company records a deferred compensation equity account and corresponding contra-equity account for the cost of the shares held by the Stock Based Deferral Plan and SERP.

The Company also has a Supplemental Executive Retirement Plan for Certain Executives, as designated by the Board of Directors, to provide non-qualified retirement benefits to participants.

Columbia Bank also maintains a non-qualified savings income maintenance deferred compensation plan (the "SIM Plan") that provides supplemental benefits to certain executives who are prevented from receiving the full benefits contemplated by the 401(k) Plan under tax law limits for tax-qualified plans, and a Deferred Compensation Plan for directors.

Columbia Bank also sponsors a directors retirement plan, a director and executive deferred compensation plan, and a supplemental executive retirement plan for certain current and former directors and officers of the Bank.

Through the acquisition of the RSI Entities, the Company also acquired an executive incentive retirement plan, a director and executive deferred compensation plan, a supplemental executive retirement plan, a key life insurance plan and a split-dollar life insurance plan for certain current and former directors and officers of the Bank.
Through the acquisition of the Freehold Entities, the Company also acquired a supplemental executive retirement plan, a director and executive deferred retirement income plan, and a director deferred retirement plan for current and former directors and officers of the Bank.
(2)    Summary of Significant Accounting Policies (continued)    

Derivatives

The Company uses derivative financial instruments as components of its market risk management, principally to manage interest rate risk. Certain derivatives are entered into in connection with transactions with commercial customers. Derivatives are not used for speculative purposes. All derivatives are recognized as either assets or liabilities in the Consolidated Statements of Financial Condition, reported at fair value and presented on a gross basis. Until a derivative is settled, a favorable change in fair value results in an unrealized gain that is recognized as an asset, while an unfavorable change in fair value results in an unrealized loss that is recognized as a liability.

The Company generally applies hedge accounting to its derivatives used for market risk management purposes. Hedge accounting is permitted only if specific criteria are met, including a requirement that a highly effective relationship exists between the derivative instrument and the hedged item, both at inception of the hedge and on an ongoing basis. Changes in the fair value of effective fair value hedges are recognized in current earnings (with the change in fair value of the hedged asset or liability also recognized in earnings). Changes in the fair value of effective cash flow hedges are recognized in other comprehensive income (loss) until earnings are affected by the variability in cash flows of the designated hedged item. Ineffective portions of hedge results are recognized in current earnings. Changes in the fair value of derivatives for which hedge accounting is not applied are recognized in current earnings.

The Company formally documents at inception all relationships between the derivative instruments and the hedged items, as well as its risk management objectives and strategies for undertaking the hedge transactions. This process includes linking all derivatives that are designated as hedges to specific assets and liabilities, or to specific firm commitments. The Company also formally assesses, both at inception of the hedge and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in the fair values or cash flows of the hedged items. If it is determined that a derivative is not highly effective or has ceased to be a highly effective hedge, the Company would discontinue hedge accounting prospectively. Gains or losses resulting from the termination of a derivative accounted for as a cash flow hedge remain in other comprehensive income (loss) and is (accreted) amortized to earnings over the remaining period of the former hedging relationship.

Certain derivative financial instruments are offered to certain commercial banking customers to manage their risk of exposure and risk management strategies. These derivative instruments consist primarily of currency forward contracts and interest rate swap contracts. The risks associated with these transactions is mitigated by simultaneously entering into similar transactions having essentially offsetting terms with a third-party. In addition, the Company executes interest rate swaps with third parties in order to hedge the interest rate risk of short-term FHLB advances.

Income Taxes

The Company and its subsidiaries file consolidated federal income tax returns. Federal income taxes are allocated to each entity based on their respective contributions to taxable income of the consolidated income tax returns. Separate state income taxes are filed for the Company and its subsidiaries on either a consolidated or unconsolidated basis as required by each jurisdiction.

The Company records income taxes using the asset and liability method. Federal and state income taxes have been provided on the basis of the Company's income or loss as reported in accordance with GAAP. The amounts reflected on the Company's federal and state income tax returns differ from these provisions due principally to temporary differences in the reporting of certain items for consolidated financial statement reporting and income tax reporting purposes. Accordingly, deferred tax assets and liabilities: (i) are recognized for the estimated future tax consequences of events that have been recognized in the financial statements or tax returns; (ii) are attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases; and (iii) are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Where applicable, deferred tax assets are reduced by a valuation allowance for any portions determined not likely to be realized based on the nature and timing of these items. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income tax expense in the period that includes the enactment date. The valuation allowance is adjusted, by a charge or credit to income tax expense, as changes in facts and circumstances warrant.

The Company did not have any liabilities for uncertain tax positions or any known unrecognized tax benefits at December 31, 2025 and 2024. The Company policy is to recognize interest and penalties related to unrecognized tax benefits in income tax expense in the Consolidated Statements of Income. The Company did not recognize any interest and penalties during the years ended December 31, 2025, 2024 and 2023.
(2)    Summary of Significant Accounting Policies (continued)    

Income Taxes (continued)

On July 1, 2018, New Jersey enacted legislation which adds to the state’s 9.0% Corporation Business Tax rate (i) a 2.5% surtax for periods beginning in 2018 and 2019 and (ii) a 1.5% surtax for periods beginning in 2020 and 2021. Subsequently, on September 12, 2020, New Jersey enacted legislation that restored and extended the 2.5% Corporation Business Tax surcharge to apply retroactively from January 1, 2020 through December 31, 2023. These surtaxes applied to corporations with more than $1.0 million of net income allocated to New Jersey. On June 28, 2024, New Jersey enacted into law a new Corporate Transit Fee, which increases the New Jersey corporate tax rate from 9.0% to 11.5%. This fee was imposed on businesses that had New Jersey taxable income of $10.0 million or more for tax years beginning January 1, 2024, and will continue through December 31, 2028.

Comprehensive Income
Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes items recorded in equity, such as unrealized gains and losses on debt securities available for sale, the noncredit component of other than temporary impairment losses on debt securities, unrealized gains and losses on derivatives, and the unfunded status and reclassification of actuarial net (loss) gain associated with the Company's benefit plans. Comprehensive income is presented in a separate Consolidated Statement of Comprehensive Income.

Segment Reporting

The Company’s operations are substantially in the financial services industry and include providing traditional banking and other financial services to its customers. Operating segments are components of a business about which separate financial information is available and evaluated regularly by the chief operating decision maker in deciding how to allocate resources and assessing performance. The Company operates primarily in New Jersey through a single reportable operating segment upon which management makes decisions regarding how to allocate resources and assess performance. While the Company’s chief operating decision maker has some limited financial information about the Company's various financial products and services, that information is not complete since it does not include a full allocation of revenue, costs, and capital from key corporate functions; therefore, the Company evaluates financial performance on the Company-wide basis. Management continues to evaluate these business units for separate reporting as facts and circumstances change.

Earnings Per Share ("EPS")

Basic EPS is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. For purposes of calculating basic EPS, weighted average common shares outstanding excludes treasury stock, unallocated employee stock ownership plan shares that have not been committed for release and deferred compensation obligations required to be settled in shares of Company stock.

Diluted EPS is computed using the same method as basic EPS and reflects the potential dilution which could occur if stock options and unvested shares were exercised and converted into common stock. The potentially diluted shares would then be included in the weighted average number of shares outstanding for the period using the treasury stock method. Shares issued and reacquired during any period are weighted for the portion of the period that they were outstanding.

Stock Compensation Plans

Compensation expense related to stock options and non-vested restricted stock awards is based on the fair value of the award on the measurement date with expense recognized on a straight line basis over the requisite performance or service period. The fair value of stock options is estimated utilizing the Black-Scholes option pricing model. The fair value of non-vested restricted stock awards is generally the closing market price of the Company's common stock on the date of grant. The Company accounts for forfeitures as they occur.

Accounting Pronouncements Adopted

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this ASU require improved annual income tax disclosures surrounding rate reconciliation, income taxes paid, and other disclosures. This update is effective for financial statements issued for fiscal years beginning after December 15, 2024, with early adoption in the interim period permitted. The Company adopted this ASU on January 1, 2025 on a retrospective basis. As it is only disclosure related, this ASU did not have an impact on the Company's consolidated financial statements. See note 15 for additional information.
(2)    Summary of Significant Accounting Policies (continued)    

Accounting Pronouncements Adopted (continued)

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. ASU 2023-07 enhances segment reporting under Topic 820 by expanding the breadth and frequency of segment disclosures. The ASU requires a public entity to disclose entity-wide and segment information in the notes to the financial statements. Disclosures include the measure of profit or loss that the chief operating decision maker uses to assess segment performance and decide how to allocate resources, as well as certain specified amounts included in that measure. This ASU was effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. The Company adopted this guidance as of December 31, 2024, on a retrospective basis. As it is only disclosure related, this ASU did not have an impact on the Company's consolidated financial statements. See note 22 for additional information.
v3.25.4
Acquisitions
12 Months Ended
Dec. 31, 2025
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]  
Acquisitions Acquisitions
Freehold Bank

On December 1, 2021, the Company completed its acquisition of Freehold Bancorp, MHC, Freehold Bancorp, Inc. and Freehold Bank (collectively, the "Freehold Entities" or "Freehold"). Pursuant to the terms of the Merger Agreement, Freehold Bancorp, MHC merged with and into the MHC, with the MHC as the surviving entity; and Freehold Bancorp, Inc. merged with and into Columbia Financial, with Columbia Financial as the surviving entity. In connection with the merger, Freehold Bank converted to a federal savings bank and operated as a wholly-owned subsidiary of Columbia Financial, Inc. until October 5, 2024, when the Company merged Freehold Bank into Columbia Bank. Under the terms of the Merger Agreement, upon the merger of the two banks, depositors of Freehold Bank become depositors of Columbia Bank and have the same rights and privileges in the MHC as if their accounts had been established at Columbia Bank on the date established at Freehold Bank. The Company issued 2,591,007 shares of its common stock to the MHC, representing an amount equal to the fair value of the Freehold Entities as determined by an independent appraiser, at the effective time of the holding company mergers.

Merger-related expenses are recorded in the Consolidated Statements of Income and are expensed as incurred. Direct acquisition and other charges incurred in connection with the acquisition of the Freehold Entities totaled $1.7 million, and $413,000 for the years ended December 31, 2024, and 2023, respectively. There were no expenses recorded for the year ended December 31, 2025.

RSI Bank

On May 1, 2022, the Company completed its acquisition of RSI Bancorp, M.H.C., RSI Bancorp, Inc. and RSI Bank (collectively, the “RSI Entities” or "RSI"). Pursuant to the terms of the Merger Agreement, RSI Bancorp, M.H.C. merged with and into the MHC, with the MHC as the surviving entity; RSI Bancorp, Inc. merged with and into Columbia Financial, with Columbia Financial as the surviving entity; and RSI Bank merged with and into Columbia Bank, with Columbia Bank as the surviving institution. Under the terms of the Merger Agreement, depositors of RSI Bank became depositors of Columbia Bank and have the same rights and privileges in the MHC as if their accounts had been established at Columbia Bank on the date established at RSI Bank. The Company issued 6,086,314 shares of its common stock to the MHC, representing an amount equal to the discounted fair value of the RSI Entities as determined by an independent appraiser, at the effective time of the merger.

Merger-related expenses are recorded in the Consolidated Statements of Income and are expensed as incurred. Direct acquisition and other charges incurred in connection with the acquisition of the RSI Entities totaled $193,000 for the year ended December 31, 2023. There were no expenses recorded for the years ended December 31, 2025 and 2024.
v3.25.4
Debt Securities Available for Sale
12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Debt Securities Available for Sale Debt Securities Available for Sale
    Debt securities available for sale at December 31, 2025 and 2024 are summarized as follows:
December 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Fair Value
(In thousands)
U.S. government and agency obligations$393,875 $4,595 $— $398,470 
Mortgage-backed securities and collateralized mortgage obligations732,393 1,646 (79,066)654,973 
Municipal obligations1,975 — (14)1,961 
Corporate debt securities71,976 314 (5,677)66,613 
$1,200,219 $6,555 $(84,757)$1,122,017 

December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Fair Value
(In thousands)
U.S. government and agency obligations$314,494 $810 $(602)$314,702 
Mortgage-backed securities and collateralized mortgage obligations729,488 173 (106,704)622,957 
Municipal obligations2,378 (22)2,359 
Corporate debt securities95,508 123 (9,703)85,928 
$1,141,868 $1,109 $(117,031)$1,025,946 

    The amortized cost and fair value of debt securities available for sale at December 31, 2025, by contractual final maturity, is shown below. Expected maturities may differ from contractual maturities due to prepayment or early call options exercised by the issuer.

December 31, 2025
Amortized CostFair Value
(In thousands)
One year or less$130,960 $131,384 
More than one year to five years251,648 255,013 
More than five years to ten years85,218 80,647 
$467,826 $467,044 
Mortgage-backed securities and collateralized mortgage obligations732,393 654,973 
$1,200,219 $1,122,017 
    

Mortgage-backed securities and collateralized mortgage obligations totaling $732.4 million at amortized cost, and $655.0 million at fair value, are not classified by maturity as their expected lives are likely to be shorter than the contractual maturity date due to principal prepayments.
(4)     Debt Securities Available for Sale (continued)

During the year ended December 31, 2025, proceeds from the sale of debt securities available for sale totaled $15.7 million, resulting in gross gains of $336,000 and no gross losses. There were four called debt securities available for sale totaling $4.0 million, and $77.5 million in maturities of debt securities available for sale during the year ended December 31, 2025.

During the year ended December 31, 2024, proceeds from the sale of debt securities available for sale totaled $321.2 million, resulting in no gross gains and $35.9 million of gross losses. There was one called debt security available for sale totaling $2.0 million and $15.0 million in maturities of debt securities available for sale during the year ended December 31, 2024.
    
During the year ended December 31, 2023, proceeds from the sale of debt securities available for sale totaled $277.0 million, resulting in no gross gains and $10.8 million of gross losses. There were no calls and $4,000 in maturities of debt securities available for sale during the year ended December 31, 2023.

Debt securities available for sale having a carrying value of $478.5 million and $343.4 million, at December 31, 2025 and 2024, respectively, were pledged as security for public funds on deposit at the Bank as required and permitted by law, pledged for outstanding borrowings at the Federal Home Loan Bank, and pledged for potential borrowings at the Federal Reserve Bank of New York.

The following tables summarize the fair value and gross unrealized losses of those securities that reported an unrealized loss at December 31, 2025 and 2024 and if the unrealized loss position was continuous for the twelve months prior to those respective dates:
December 31, 2025
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $— $— $— $— 
Mortgage-backed securities and collateralized mortgage obligations27,710 (57)456,562 (79,009)484,272 (79,066)
Municipal obligations1,536 (14)— — 1,536 (14)
Corporate debt securities3,996 (4)56,802 (5,673)60,798 (5,677)
$33,242 $(75)$513,364 $(84,682)$546,606 $(84,757)

December 31, 2024
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$126,197 $(602)$— $— $126,197 $(602)
Mortgage-backed securities and collateralized mortgage obligations93,763 (475)476,559 (106,229)570,322 (106,704)
Municipal obligations— — 1,346 (22)1,346 (22)
Corporate debt securities— — 80,805 (9,703)80,805 (9,703)
$219,960 $(1,077)$558,710 $(115,954)$778,670 $(117,031)
(4)     Debt Securities Available for Sale (continued)

The number of securities in an unrealized loss position at December 31, 2025 totaled 128, compared with 185 at December 31, 2024. All temporarily impaired securities were investment grade as of December 31, 2025 and 2024 except two corporate debt securities which were rated BB+, totaling $8.4 million at December 31, 2024.

For available for sale securities, the Company assesses whether a loss is from credit or other factors and considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and adverse conditions 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 is less than the amortized cost, a credit loss would be recorded through an allowance for credit losses, limited by the amount that the fair value is less than the amortized cost basis.

There was no activity in the allowance for credit losses on debt securities available for sale during the years ended December 31, 2025 and 2024.

The Company made an accounting policy election to exclude accrued interest receivable from the amortized cost basis of debt securities available for sale. Accrued interest receivable on debt securities available for sale is reported as a component of accrued interest receivable in the Consolidated Statements of Financial Condition, which totaled $5.2 million and $4.7 million at December 31, 2025 and 2024, respectively, and is excluded from the estimate of credit losses.
Debt Securities Held to Maturity
Debt securities held to maturity at December 31, 2025 and 2024 are summarized as follows:
December 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Allowance for Credit LossesFair Value
(In thousands)
U.S. government and agency obligations$44,872 $— $(3,321)$— $41,551 
Mortgage-backed securities and collateralized mortgage obligations351,361 699 (26,322)— 325,738 
$396,233 $699 $(29,643)$— $367,289 

December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Allowance for Credit LossesFair Value
(In thousands)
U.S. government and agency obligations$44,871 $— $(5,288)$— $39,583 
Mortgage-backed securities and collateralized mortgage obligations347,969 (37,407)— 310,570 
$392,840 $$(42,695)$— $350,153 
    
The amortized cost and fair value of debt securities held to maturity at December 31, 2025, by contractual final maturity, is shown below. Expected maturities may differ from contractual maturities due to prepayment or early call options exercised by the issuer.
December 31, 2025
Amortized CostFair Value
(In thousands)
One year or less$14,875 $14,807 
More than one year to five years10,000 9,376 
More than five years to ten years9,997 9,310 
More than ten years10,000 8,058 
44,872 41,551 
Mortgage-backed securities and collateralized mortgage obligations351,361 325,738 
$396,233 $367,289 

Mortgage-backed securities and collateralized mortgage obligations totaling $351.4 million at amortized cost, and $325.7 million at fair value at December 31, 2025, are not classified by maturity as their expected lives are likely to be shorter than the contractual maturity date due to principal prepayments.

During the year ended December 31, 2025, there were no sales, calls or maturities of debt securities held to maturity.

During the year ended December 31, 2024, there were no sales or maturities of debt securities held to maturity. There was one called debt security held to maturity totaling $5.0 million during the year ended December 31, 2024.

During the year ended December 31, 2023, there were no sales or calls of debt securities held to maturity. During the year ended December 31, 2023, proceeds from matured debt securities held to maturity totaled $4.3 million.
(5)     Debt Securities Held to Maturity (continued)
Debt securities held to maturity having a carrying value of $242.2 million and $247.6 million, at December 31, 2025 and 2024, respectively, were pledged as security for public funds on deposit at the Bank as required and permitted by law, pledged for outstanding borrowings at the Federal Home Loan Bank, and pledged for potential borrowings at the Federal Reserve Bank of New York.

The following tables summarize the fair value and gross unrealized losses of those securities that reported an unrealized loss at December 31, 2025 and 2024 and if the unrealized loss position was continuous for the twelve months prior to those respective dates:

December 31, 2025
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $41,552 $(3,321)$41,552 $(3,321)
Mortgage-backed securities and collateralized mortgage obligations1,659 (1)290,237 (26,321)291,896 (26,322)
$1,659 $(1)$331,789 $(29,642)$333,448 $(29,643)

December 31, 2024
Less than 12 months12 months or longerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $39,583 $(5,288)$39,583 $(5,288)
Mortgage-backed securities and collateralized mortgage obligations41,030 (605)267,756 (36,802)308,786 (37,407)
$41,030 $(605)$307,339 $(42,090)$348,369 $(42,695)

The number of securities in an unrealized loss position at December 31, 2025 totaled 101, compared with 105 at December 31, 2024. All temporarily impaired securities were investment grade as of December 31, 2025 and 2024.

For held to maturity securities, management measures expected credit losses on a collective basis by major security type. All
of the mortgage-backed securities are issued by U.S. government agencies and are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies and have a long history of no credit losses and, therefore, the expectation of non-payment is zero and the Company is not required to estimate an allowance for credit losses on these securities under the CECL standard. All these securities reflect a credit quality rating of AAA by Moody's Investors Service.

The Company made an accounting policy election to exclude accrued interest receivable from the amortized cost basis of debt securities held to maturity. Accrued interest receivable on debt securities held to maturity is reported as a component of accrued interest receivable in the Consolidated Statements of Financial Condition, which totaled $948,000 and $898,000 at December 31, 2025 and 2024, respectively, and is excluded from the estimate of credit losses.
Equity Securities at Fair Value
The Company has an equity securities portfolio which consists of stock in other financial institutions, a payment technology company, a community bank correspondent services company, preferred stock in U.S. Government agencies, and a Community Reinvestment Act qualifying bond fund which are reported at fair value on the Company's Consolidated Statements of Financial Condition. The fair value of the equities portfolio at December 31, 2025 and 2024 was $6.8 million and $6.7 million, respectively.

The Company recorded a net increase in the fair value of equity securities of $873,000 and $2.6 million during the years ended December 31, 2025 and 2024, respectively, as a component of non-interest income.
During the year ended December 31, 2025 proceeds from the sale of equity securities totaled $698,000, resulting in no gross gains and $46,000 of gross losses. During the years ended December 31, 2024 and 2023, there were no sales of equity securities.
v3.25.4
Debt Securities Held to Maturity
12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Debt Securities Held to Maturity Debt Securities Available for Sale
    Debt securities available for sale at December 31, 2025 and 2024 are summarized as follows:
December 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Fair Value
(In thousands)
U.S. government and agency obligations$393,875 $4,595 $— $398,470 
Mortgage-backed securities and collateralized mortgage obligations732,393 1,646 (79,066)654,973 
Municipal obligations1,975 — (14)1,961 
Corporate debt securities71,976 314 (5,677)66,613 
$1,200,219 $6,555 $(84,757)$1,122,017 

December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Fair Value
(In thousands)
U.S. government and agency obligations$314,494 $810 $(602)$314,702 
Mortgage-backed securities and collateralized mortgage obligations729,488 173 (106,704)622,957 
Municipal obligations2,378 (22)2,359 
Corporate debt securities95,508 123 (9,703)85,928 
$1,141,868 $1,109 $(117,031)$1,025,946 

    The amortized cost and fair value of debt securities available for sale at December 31, 2025, by contractual final maturity, is shown below. Expected maturities may differ from contractual maturities due to prepayment or early call options exercised by the issuer.

December 31, 2025
Amortized CostFair Value
(In thousands)
One year or less$130,960 $131,384 
More than one year to five years251,648 255,013 
More than five years to ten years85,218 80,647 
$467,826 $467,044 
Mortgage-backed securities and collateralized mortgage obligations732,393 654,973 
$1,200,219 $1,122,017 
    

Mortgage-backed securities and collateralized mortgage obligations totaling $732.4 million at amortized cost, and $655.0 million at fair value, are not classified by maturity as their expected lives are likely to be shorter than the contractual maturity date due to principal prepayments.
(4)     Debt Securities Available for Sale (continued)

During the year ended December 31, 2025, proceeds from the sale of debt securities available for sale totaled $15.7 million, resulting in gross gains of $336,000 and no gross losses. There were four called debt securities available for sale totaling $4.0 million, and $77.5 million in maturities of debt securities available for sale during the year ended December 31, 2025.

During the year ended December 31, 2024, proceeds from the sale of debt securities available for sale totaled $321.2 million, resulting in no gross gains and $35.9 million of gross losses. There was one called debt security available for sale totaling $2.0 million and $15.0 million in maturities of debt securities available for sale during the year ended December 31, 2024.
    
During the year ended December 31, 2023, proceeds from the sale of debt securities available for sale totaled $277.0 million, resulting in no gross gains and $10.8 million of gross losses. There were no calls and $4,000 in maturities of debt securities available for sale during the year ended December 31, 2023.

Debt securities available for sale having a carrying value of $478.5 million and $343.4 million, at December 31, 2025 and 2024, respectively, were pledged as security for public funds on deposit at the Bank as required and permitted by law, pledged for outstanding borrowings at the Federal Home Loan Bank, and pledged for potential borrowings at the Federal Reserve Bank of New York.

The following tables summarize the fair value and gross unrealized losses of those securities that reported an unrealized loss at December 31, 2025 and 2024 and if the unrealized loss position was continuous for the twelve months prior to those respective dates:
December 31, 2025
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $— $— $— $— 
Mortgage-backed securities and collateralized mortgage obligations27,710 (57)456,562 (79,009)484,272 (79,066)
Municipal obligations1,536 (14)— — 1,536 (14)
Corporate debt securities3,996 (4)56,802 (5,673)60,798 (5,677)
$33,242 $(75)$513,364 $(84,682)$546,606 $(84,757)

December 31, 2024
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$126,197 $(602)$— $— $126,197 $(602)
Mortgage-backed securities and collateralized mortgage obligations93,763 (475)476,559 (106,229)570,322 (106,704)
Municipal obligations— — 1,346 (22)1,346 (22)
Corporate debt securities— — 80,805 (9,703)80,805 (9,703)
$219,960 $(1,077)$558,710 $(115,954)$778,670 $(117,031)
(4)     Debt Securities Available for Sale (continued)

The number of securities in an unrealized loss position at December 31, 2025 totaled 128, compared with 185 at December 31, 2024. All temporarily impaired securities were investment grade as of December 31, 2025 and 2024 except two corporate debt securities which were rated BB+, totaling $8.4 million at December 31, 2024.

For available for sale securities, the Company assesses whether a loss is from credit or other factors and considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and adverse conditions 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 is less than the amortized cost, a credit loss would be recorded through an allowance for credit losses, limited by the amount that the fair value is less than the amortized cost basis.

There was no activity in the allowance for credit losses on debt securities available for sale during the years ended December 31, 2025 and 2024.

The Company made an accounting policy election to exclude accrued interest receivable from the amortized cost basis of debt securities available for sale. Accrued interest receivable on debt securities available for sale is reported as a component of accrued interest receivable in the Consolidated Statements of Financial Condition, which totaled $5.2 million and $4.7 million at December 31, 2025 and 2024, respectively, and is excluded from the estimate of credit losses.
Debt Securities Held to Maturity
Debt securities held to maturity at December 31, 2025 and 2024 are summarized as follows:
December 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Allowance for Credit LossesFair Value
(In thousands)
U.S. government and agency obligations$44,872 $— $(3,321)$— $41,551 
Mortgage-backed securities and collateralized mortgage obligations351,361 699 (26,322)— 325,738 
$396,233 $699 $(29,643)$— $367,289 

December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Allowance for Credit LossesFair Value
(In thousands)
U.S. government and agency obligations$44,871 $— $(5,288)$— $39,583 
Mortgage-backed securities and collateralized mortgage obligations347,969 (37,407)— 310,570 
$392,840 $$(42,695)$— $350,153 
    
The amortized cost and fair value of debt securities held to maturity at December 31, 2025, by contractual final maturity, is shown below. Expected maturities may differ from contractual maturities due to prepayment or early call options exercised by the issuer.
December 31, 2025
Amortized CostFair Value
(In thousands)
One year or less$14,875 $14,807 
More than one year to five years10,000 9,376 
More than five years to ten years9,997 9,310 
More than ten years10,000 8,058 
44,872 41,551 
Mortgage-backed securities and collateralized mortgage obligations351,361 325,738 
$396,233 $367,289 

Mortgage-backed securities and collateralized mortgage obligations totaling $351.4 million at amortized cost, and $325.7 million at fair value at December 31, 2025, are not classified by maturity as their expected lives are likely to be shorter than the contractual maturity date due to principal prepayments.

During the year ended December 31, 2025, there were no sales, calls or maturities of debt securities held to maturity.

During the year ended December 31, 2024, there were no sales or maturities of debt securities held to maturity. There was one called debt security held to maturity totaling $5.0 million during the year ended December 31, 2024.

During the year ended December 31, 2023, there were no sales or calls of debt securities held to maturity. During the year ended December 31, 2023, proceeds from matured debt securities held to maturity totaled $4.3 million.
(5)     Debt Securities Held to Maturity (continued)
Debt securities held to maturity having a carrying value of $242.2 million and $247.6 million, at December 31, 2025 and 2024, respectively, were pledged as security for public funds on deposit at the Bank as required and permitted by law, pledged for outstanding borrowings at the Federal Home Loan Bank, and pledged for potential borrowings at the Federal Reserve Bank of New York.

The following tables summarize the fair value and gross unrealized losses of those securities that reported an unrealized loss at December 31, 2025 and 2024 and if the unrealized loss position was continuous for the twelve months prior to those respective dates:

December 31, 2025
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $41,552 $(3,321)$41,552 $(3,321)
Mortgage-backed securities and collateralized mortgage obligations1,659 (1)290,237 (26,321)291,896 (26,322)
$1,659 $(1)$331,789 $(29,642)$333,448 $(29,643)

December 31, 2024
Less than 12 months12 months or longerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $39,583 $(5,288)$39,583 $(5,288)
Mortgage-backed securities and collateralized mortgage obligations41,030 (605)267,756 (36,802)308,786 (37,407)
$41,030 $(605)$307,339 $(42,090)$348,369 $(42,695)

The number of securities in an unrealized loss position at December 31, 2025 totaled 101, compared with 105 at December 31, 2024. All temporarily impaired securities were investment grade as of December 31, 2025 and 2024.

For held to maturity securities, management measures expected credit losses on a collective basis by major security type. All
of the mortgage-backed securities are issued by U.S. government agencies and are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies and have a long history of no credit losses and, therefore, the expectation of non-payment is zero and the Company is not required to estimate an allowance for credit losses on these securities under the CECL standard. All these securities reflect a credit quality rating of AAA by Moody's Investors Service.

The Company made an accounting policy election to exclude accrued interest receivable from the amortized cost basis of debt securities held to maturity. Accrued interest receivable on debt securities held to maturity is reported as a component of accrued interest receivable in the Consolidated Statements of Financial Condition, which totaled $948,000 and $898,000 at December 31, 2025 and 2024, respectively, and is excluded from the estimate of credit losses.
Equity Securities at Fair Value
The Company has an equity securities portfolio which consists of stock in other financial institutions, a payment technology company, a community bank correspondent services company, preferred stock in U.S. Government agencies, and a Community Reinvestment Act qualifying bond fund which are reported at fair value on the Company's Consolidated Statements of Financial Condition. The fair value of the equities portfolio at December 31, 2025 and 2024 was $6.8 million and $6.7 million, respectively.

The Company recorded a net increase in the fair value of equity securities of $873,000 and $2.6 million during the years ended December 31, 2025 and 2024, respectively, as a component of non-interest income.
During the year ended December 31, 2025 proceeds from the sale of equity securities totaled $698,000, resulting in no gross gains and $46,000 of gross losses. During the years ended December 31, 2024 and 2023, there were no sales of equity securities.
v3.25.4
Equity Securities at Fair Value
12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Equity Securities at Fair Value Debt Securities Available for Sale
    Debt securities available for sale at December 31, 2025 and 2024 are summarized as follows:
December 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Fair Value
(In thousands)
U.S. government and agency obligations$393,875 $4,595 $— $398,470 
Mortgage-backed securities and collateralized mortgage obligations732,393 1,646 (79,066)654,973 
Municipal obligations1,975 — (14)1,961 
Corporate debt securities71,976 314 (5,677)66,613 
$1,200,219 $6,555 $(84,757)$1,122,017 

December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Fair Value
(In thousands)
U.S. government and agency obligations$314,494 $810 $(602)$314,702 
Mortgage-backed securities and collateralized mortgage obligations729,488 173 (106,704)622,957 
Municipal obligations2,378 (22)2,359 
Corporate debt securities95,508 123 (9,703)85,928 
$1,141,868 $1,109 $(117,031)$1,025,946 

    The amortized cost and fair value of debt securities available for sale at December 31, 2025, by contractual final maturity, is shown below. Expected maturities may differ from contractual maturities due to prepayment or early call options exercised by the issuer.

December 31, 2025
Amortized CostFair Value
(In thousands)
One year or less$130,960 $131,384 
More than one year to five years251,648 255,013 
More than five years to ten years85,218 80,647 
$467,826 $467,044 
Mortgage-backed securities and collateralized mortgage obligations732,393 654,973 
$1,200,219 $1,122,017 
    

Mortgage-backed securities and collateralized mortgage obligations totaling $732.4 million at amortized cost, and $655.0 million at fair value, are not classified by maturity as their expected lives are likely to be shorter than the contractual maturity date due to principal prepayments.
(4)     Debt Securities Available for Sale (continued)

During the year ended December 31, 2025, proceeds from the sale of debt securities available for sale totaled $15.7 million, resulting in gross gains of $336,000 and no gross losses. There were four called debt securities available for sale totaling $4.0 million, and $77.5 million in maturities of debt securities available for sale during the year ended December 31, 2025.

During the year ended December 31, 2024, proceeds from the sale of debt securities available for sale totaled $321.2 million, resulting in no gross gains and $35.9 million of gross losses. There was one called debt security available for sale totaling $2.0 million and $15.0 million in maturities of debt securities available for sale during the year ended December 31, 2024.
    
During the year ended December 31, 2023, proceeds from the sale of debt securities available for sale totaled $277.0 million, resulting in no gross gains and $10.8 million of gross losses. There were no calls and $4,000 in maturities of debt securities available for sale during the year ended December 31, 2023.

Debt securities available for sale having a carrying value of $478.5 million and $343.4 million, at December 31, 2025 and 2024, respectively, were pledged as security for public funds on deposit at the Bank as required and permitted by law, pledged for outstanding borrowings at the Federal Home Loan Bank, and pledged for potential borrowings at the Federal Reserve Bank of New York.

The following tables summarize the fair value and gross unrealized losses of those securities that reported an unrealized loss at December 31, 2025 and 2024 and if the unrealized loss position was continuous for the twelve months prior to those respective dates:
December 31, 2025
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $— $— $— $— 
Mortgage-backed securities and collateralized mortgage obligations27,710 (57)456,562 (79,009)484,272 (79,066)
Municipal obligations1,536 (14)— — 1,536 (14)
Corporate debt securities3,996 (4)56,802 (5,673)60,798 (5,677)
$33,242 $(75)$513,364 $(84,682)$546,606 $(84,757)

December 31, 2024
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$126,197 $(602)$— $— $126,197 $(602)
Mortgage-backed securities and collateralized mortgage obligations93,763 (475)476,559 (106,229)570,322 (106,704)
Municipal obligations— — 1,346 (22)1,346 (22)
Corporate debt securities— — 80,805 (9,703)80,805 (9,703)
$219,960 $(1,077)$558,710 $(115,954)$778,670 $(117,031)
(4)     Debt Securities Available for Sale (continued)

The number of securities in an unrealized loss position at December 31, 2025 totaled 128, compared with 185 at December 31, 2024. All temporarily impaired securities were investment grade as of December 31, 2025 and 2024 except two corporate debt securities which were rated BB+, totaling $8.4 million at December 31, 2024.

For available for sale securities, the Company assesses whether a loss is from credit or other factors and considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and adverse conditions 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 is less than the amortized cost, a credit loss would be recorded through an allowance for credit losses, limited by the amount that the fair value is less than the amortized cost basis.

There was no activity in the allowance for credit losses on debt securities available for sale during the years ended December 31, 2025 and 2024.

The Company made an accounting policy election to exclude accrued interest receivable from the amortized cost basis of debt securities available for sale. Accrued interest receivable on debt securities available for sale is reported as a component of accrued interest receivable in the Consolidated Statements of Financial Condition, which totaled $5.2 million and $4.7 million at December 31, 2025 and 2024, respectively, and is excluded from the estimate of credit losses.
Debt Securities Held to Maturity
Debt securities held to maturity at December 31, 2025 and 2024 are summarized as follows:
December 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Allowance for Credit LossesFair Value
(In thousands)
U.S. government and agency obligations$44,872 $— $(3,321)$— $41,551 
Mortgage-backed securities and collateralized mortgage obligations351,361 699 (26,322)— 325,738 
$396,233 $699 $(29,643)$— $367,289 

December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Allowance for Credit LossesFair Value
(In thousands)
U.S. government and agency obligations$44,871 $— $(5,288)$— $39,583 
Mortgage-backed securities and collateralized mortgage obligations347,969 (37,407)— 310,570 
$392,840 $$(42,695)$— $350,153 
    
The amortized cost and fair value of debt securities held to maturity at December 31, 2025, by contractual final maturity, is shown below. Expected maturities may differ from contractual maturities due to prepayment or early call options exercised by the issuer.
December 31, 2025
Amortized CostFair Value
(In thousands)
One year or less$14,875 $14,807 
More than one year to five years10,000 9,376 
More than five years to ten years9,997 9,310 
More than ten years10,000 8,058 
44,872 41,551 
Mortgage-backed securities and collateralized mortgage obligations351,361 325,738 
$396,233 $367,289 

Mortgage-backed securities and collateralized mortgage obligations totaling $351.4 million at amortized cost, and $325.7 million at fair value at December 31, 2025, are not classified by maturity as their expected lives are likely to be shorter than the contractual maturity date due to principal prepayments.

During the year ended December 31, 2025, there were no sales, calls or maturities of debt securities held to maturity.

During the year ended December 31, 2024, there were no sales or maturities of debt securities held to maturity. There was one called debt security held to maturity totaling $5.0 million during the year ended December 31, 2024.

During the year ended December 31, 2023, there were no sales or calls of debt securities held to maturity. During the year ended December 31, 2023, proceeds from matured debt securities held to maturity totaled $4.3 million.
(5)     Debt Securities Held to Maturity (continued)
Debt securities held to maturity having a carrying value of $242.2 million and $247.6 million, at December 31, 2025 and 2024, respectively, were pledged as security for public funds on deposit at the Bank as required and permitted by law, pledged for outstanding borrowings at the Federal Home Loan Bank, and pledged for potential borrowings at the Federal Reserve Bank of New York.

The following tables summarize the fair value and gross unrealized losses of those securities that reported an unrealized loss at December 31, 2025 and 2024 and if the unrealized loss position was continuous for the twelve months prior to those respective dates:

December 31, 2025
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $41,552 $(3,321)$41,552 $(3,321)
Mortgage-backed securities and collateralized mortgage obligations1,659 (1)290,237 (26,321)291,896 (26,322)
$1,659 $(1)$331,789 $(29,642)$333,448 $(29,643)

December 31, 2024
Less than 12 months12 months or longerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $39,583 $(5,288)$39,583 $(5,288)
Mortgage-backed securities and collateralized mortgage obligations41,030 (605)267,756 (36,802)308,786 (37,407)
$41,030 $(605)$307,339 $(42,090)$348,369 $(42,695)

The number of securities in an unrealized loss position at December 31, 2025 totaled 101, compared with 105 at December 31, 2024. All temporarily impaired securities were investment grade as of December 31, 2025 and 2024.

For held to maturity securities, management measures expected credit losses on a collective basis by major security type. All
of the mortgage-backed securities are issued by U.S. government agencies and are either explicitly or implicitly guaranteed by the U.S. government, are highly rated by major rating agencies and have a long history of no credit losses and, therefore, the expectation of non-payment is zero and the Company is not required to estimate an allowance for credit losses on these securities under the CECL standard. All these securities reflect a credit quality rating of AAA by Moody's Investors Service.

The Company made an accounting policy election to exclude accrued interest receivable from the amortized cost basis of debt securities held to maturity. Accrued interest receivable on debt securities held to maturity is reported as a component of accrued interest receivable in the Consolidated Statements of Financial Condition, which totaled $948,000 and $898,000 at December 31, 2025 and 2024, respectively, and is excluded from the estimate of credit losses.
Equity Securities at Fair Value
The Company has an equity securities portfolio which consists of stock in other financial institutions, a payment technology company, a community bank correspondent services company, preferred stock in U.S. Government agencies, and a Community Reinvestment Act qualifying bond fund which are reported at fair value on the Company's Consolidated Statements of Financial Condition. The fair value of the equities portfolio at December 31, 2025 and 2024 was $6.8 million and $6.7 million, respectively.

The Company recorded a net increase in the fair value of equity securities of $873,000 and $2.6 million during the years ended December 31, 2025 and 2024, respectively, as a component of non-interest income.
During the year ended December 31, 2025 proceeds from the sale of equity securities totaled $698,000, resulting in no gross gains and $46,000 of gross losses. During the years ended December 31, 2024 and 2023, there were no sales of equity securities.
v3.25.4
Loans Receivable and Allowance for Credit Losses
12 Months Ended
Dec. 31, 2025
Receivables [Abstract]  
Loans Receivable and Allowance for Credit Losses Loans Receivable and Allowance for Credit Losses
Loans receivable at December 31, 2025 and 2024 are summarized as follows:
December 31,
20252024
(In thousands)
Real estate loans:
One-to-four family$2,558,252 $2,710,937 
Multifamily1,677,613 1,460,641 
Commercial real estate2,513,260 2,339,883 
Construction469,438 473,573 
Commercial business loans 766,792 622,000 
Consumer loans:
Home equity loans and advances255,126 259,009 
Other consumer loans2,895 3,404 
Total gross loans8,243,376 7,869,447 
PCD loans10,442 11,686 
Net deferred loan costs, fees and purchased premiums and discounts 38,192 35,795 
Loans receivable$8,292,010 $7,916,928 

The Company had no loans held-for-sale at December 31, 2025 and 2024. During the year ended December 31, 2025, the Company sold $16.1 million, $10.9 million, and $8.6 million of one-to-four family real estate loans, construction loans, and SBA loans included in commercial business loans held-for sale, respectively, resulting in gross gains of $899,000 and gross losses of $100,000. During the year ended December 31, 2024, the Company sold $8.9 million, $3.3 million, and $6.8 million of one-to-four family real estate loans, construction loans, and SBA loans included in commercial business loans held-for sale, respectively, resulting in gross gains of $906,000 and no gross losses. During the year ended December 31, 2023, the Company sold $73.4 million, $21.4 million, $8.1 million, and $18.4 million of one-to-four family real estate loans and home equity loans, commercial real estate loans, construction loans, and SBA loans included in commercial business loans held-for-sale, respectively, resulting in gross gains of $2.3 million and gross losses of $1.0 million.

During the year ended December 31, 2025, the Company purchased $130.9 million in equipment finance loans, included in commercial business loans, and $20.0 million in construction loan participations from a third-party. During the year ended December 31, 2024, the Company purchased $78.7 million of commercial real estate and participation loans from a third party financial institution. During the year ended December 31, 2023, the Company purchased a $14.7 million commercial real estate participation loan from a third party.

The Company has entered into guarantor swaps with Freddie Mac which results in improved liquidity. During the year ended December 31, 2025, the Company exchanged $13.3 million of loans for Freddie Mac mortgage participation certificates, resulting in gross gains of $129,000, and no gross losses. During the years ended December 31, 2024 and 2023, no loans were exchanged for Freddie Mac mortgage participation certificates. The Company retained the servicing of these loans.

At December 31, 2025 and 2024, the carrying value of loans serviced by the Company for investors was $494.8 million and $503.9 million, respectively. These loans are not included in the Consolidated Statements of Financial Condition. Servicing income totaled $1.4 million for each of the years ended December 31, 2025, 2024 and 2023, respectively.
(7)     Loans Receivable and Allowance for Credit Losses (continued)

The Company has granted loans to certain officers and directors of the Company and its subsidiaries and to their associates. At December 31, 2025 and 2024, such loans totaled approximately $2.2 million and $2.6 million, respectively. During the years ended December 31, 2025 and 2024, no new loans were granted to related parties. During the year ended December 31, 2023, one new loan was granted to a related party totaling $100,000. These loans are performing in accordance with their original terms.

The following tables summarize the aging of loans receivable by portfolio segment, including non-accrual loans and excluding PCD loans, at December 31, 2025 and 2024:
December 31, 2025
30-59 Days60-89 Days90 Days or MoreTotal Past DueNon-accrualCurrentTotal
(In thousands)
Real estate loans:
One-to-four family$13,886 $5,652 $4,545 $24,083 $9,787 $2,534,169 $2,558,252 
Multifamily2,083 10,595 300 12,978 — 1,664,635 1,677,613 
Commercial real estate8,072 320 4,827 13,219 5,766 2,500,041 2,513,260 
Construction— — 5,923 5,923 5,923 463,515 469,438 
Commercial business loans11,990 1,408 11,005 24,403 15,281 742,389 766,792 
Consumer loans:
Home equity loans and advances566 175 1,018 1,759 1,243 253,367 255,126 
Other consumer loans— — 2,891 2,895 
Total loans$36,598 $18,153 $27,618 $82,369 $38,000 $8,161,007 $8,243,376 

December 31, 2024
30-59 Days60-89 Days90 Days or MoreTotal Past DueNon-accrualCurrentTotal
(In thousands)
Real estate loans:
One-to-four family$11,685 $6,250 $3,729 $21,664 $8,750 $2,689,273 $2,710,937 
Multifamily13,626 — — 13,626 — 1,447,015 1,460,641 
Commercial real estate4,394 632 — 5,026 2,920 2,334,857 2,339,883 
Construction6,205 — — 6,205 — 467,368 473,573 
Commercial business loans3,713 2,643 2,365 8,721 9,785 613,279 622,000 
Consumer loans:
Home equity loans and advances1,026 372 126 1,524 246 257,485 259,009 
Other consumer loans— — — 3,401 3,404 
Total loans$40,649 $9,900 $6,220 56,769 $21,701 $7,812,678 $7,869,447 

The Company considers a loan to be delinquent when we have not received a payment within 30 days of its contractual due date, or when the Company does not expect to receive all principal and interest payments owed substantially in accordance with the terms of the loan agreement, regardless of the past due status. Non-accruing loans are returned to accrual status after there has been a sustained period of repayment performance and both principal and interest are deemed collectible. The Company identifies loans that may need to be charged-off as a loss by reviewing all delinquent loans, classified loans and other loans for which management may have concerns about collectability.

At December 31, 2025 and 2024, non-accrual loans totaled $38.0 million and $21.7 million, respectively. Included in non-accrual loans at December 31, 2025 and 2024, are 38 and 31 loans totaling $10.4 million and $15.5 million which are less than 90 days in arrears.
(7)     Loans Receivable and Allowance for Credit Losses (continued)

If non-accrual loans had performed in accordance with their original terms, interest income would have increased by $3.3 million, $1.5 million, and $909,000 for the years ended December 31, 2025, 2024 and 2023, respectively. The amount of cash basis interest income that was recognized on these loans during the years ended December 31, 2025, 2024 and 2023, was $1.0 million, $821,000, and $358,000, respectively.

At December 31, 2025 and 2024, there were no loans past due 90 days or more still accruing interest.

PCD loans were loans acquired at a discount primarily due to deteriorated credit quality. These loans were initially recorded at fair value at acquisition, based upon the present value of expected future cash flows, with no related allowance for credit losses. Loans acquired in a business combination are recorded in accordance with ASC Topic 326, which requires loans as of the acquisition date, which have experienced a more than insignificant deterioration in credit quality since origination, to be classified as PCD loans.

At December 31, 2025 and 2024, PCD loans acquired in the Stewardship Financial Corporation acquisition totaled $1.1 million and $1.2 million, respectively, PCD loans acquired in the Freehold Bank acquisition totaled $44,000 and $241,000, respectively, and PCD loans acquired in the RSI Bank acquisition totaled $8.3 million and $10.3 million, respectively. PCD loans acquired in 2025 in conjunction with the purchase of equipment finance loans totaled $1.0 million at December 31, 2025, and charge-offs related to these purchased loans totaled $3.2 million during the year ended December 31, 2025.

We may obtain physical possession of real estate collateralizing a residential mortgage loan via foreclosure. At December 31, 2025, the Company held no real estate owned. At December 31, 2024, the Company held one commercial property with a carrying value of $1.3 million in other real estate owned, which was sold in June 2025. At December 31, 2025, we had nine residential mortgage loans with carrying values totaling $2.5 million and four home equity loans with carrying value totaling $585,000, collateralized by residential real estate, which were in the process of foreclosure. At December 31, 2024, we had four residential mortgage loans with carrying values totaling $1.1 million collateralized by residential real estate which were in the process of foreclosure.

The balance of the allowance for credit losses is based on expected loss methodology, referred to as the "CECL" methodology. The loan portfolio segmentation includes seven portfolio segments taking into consideration common loan attributes and risk characteristics, as well as historical reporting metrics and data availability. Accrued interest receivable on loans receivable is reported as a component of accrued interest receivable in the Consolidated Statements of Financial Condition, which totaled $34.7 million and $33.5 million at December 31, 2025 and 2024, respectively, and is excluded from the estimate of credit losses.

The Allowance for Credit Losses ("ACL") is established through the provision for credit losses that are charged to income, which is based upon an evaluation of estimated losses in the current loan portfolio, including the evaluation of individually analyzed loans. Charge-offs against the ACL are taken on loans where management determines that the collection of loan principal and interest is unlikely. Recoveries made on loans that have been charged-off are credited to the ACL. Although we believe we have established and maintained the ACL on loans at appropriate levels, changes in reserves may be necessary if actual economic and other conditions differ substantially from the forecast used in estimating the ACL.
(7)     Loans Receivable and Allowance for Credit Losses (continued)

The following tables summarize loans receivable (including PCD loans) and allowance for credit losses by portfolio segment and impairment method at December 31, 2025 and 2024:
December 31, 2025
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial Business Home Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Allowance for credit losses:
Individually analyzed loans$— $— $— $— $— $— $— $— 
Collectively analyzed loans13,280 10,647 18,563 6,617 16,753 1,289 67,155 
Loans acquired with deteriorated credit quality — 29 — 14 — — 46 
Total$13,283 $10,647 $18,592 $6,617 $16,767 $1,289 $$67,201 
Total loans:
Individually analyzed loans$10,988 $300 $5,492 $5,923 $13,658 $1,262 $— $37,623 
Collectively analyzed loans2,547,264 1,677,313 2,507,768 463,515 753,134 253,864 2,895 8,205,753 
Loans acquired with deteriorated credit quality 1,267 — 7,891 — 1,284 — — 10,442 
Total loans$2,559,519 $1,677,613 $2,521,151 $469,438 $768,076 $255,126 $2,895 $8,253,818 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

December 31, 2024
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial Business Home Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Allowance for credit losses:
Individually analyzed loans$— $— $— $— $— $— $— $— 
Collectively analyzed loans13,169 9,542 15,940 6,703 13,112 1,452 59,925 
Loans acquired with deteriorated credit quality— 29 — — — — 33 
Total$13,173 $9,542 $15,969 $6,703 $13,112 $1,452 $$59,958 
Total loans:
Individually analyzed loans$9,167 $5,743 $7,517 $— $15,184 $331 $— $37,942 
Collectively analyzed loans2,701,770 1,454,898 2,332,366 473,573 606,816 258,678 3,404 7,831,505 
Loans acquired with deteriorated credit quality1,815 — 9,425 — 300 146 — 11,686 
Total loans$2,712,752 $1,460,641 $2,349,308 $473,573 $622,300 $259,155 $3,404 $7,881,133 

Modifications made to borrowers experiencing financial difficulty may include principal or interest forgiveness, forbearance, interest rate reductions, term extensions, or a combination of these events intended to minimize economic loss and to avoid foreclosure or repossession of collateral.

The following tables presents the modifications of loans to borrowers experiencing financial difficulty that were modified during the years ended December 31, 2025, 2024, and 2023:

 For the Year Ended December 31, 2025
Amortized CostInterest Rate ReductionTerm ExtensionCombination of
Term Extension
and Interest
Rate Reduction
% of Total Class of Loans Receivable
(Dollars in thousands)
Commercial real estate$12,385 $— $9,395 $2,990 0.49 %
Commercial business11,771 673 7,000 4,098 1.54 
Total loans$24,156 $673 $16,395 $7,088 0.29 %
(7)     Loans Receivable and Allowance for Credit Losses (continued)

 For the Year Ended December 31, 2024
Amortized CostInterest Rate ReductionTerm Extension% of Total Class of Loans Receivable
(Dollars in thousands)
Commercial real estate$1,536 $1,536 $— 0.07 %
Commercial business5,630 — 5,630 0.91 
Total loans$7,166 $1,536 $5,630 0.09 %
 For the Year Ended December 31, 2023
Amortized CostTerm ExtensionCombination of Term Extension, Interest Rate Reduction and Principal Forgiveness% of Total Class of Loans Receivable
(Dollars in thousands)
Commercial real estate$1,038 $1,038 $— — %
Construction2,317 2,317 — 0.50 
Commercial business5,240 240 5,000 1.00 
Total loans$8,595 $3,595 $5,000 0.10 %

The following table describes the types of modifications of loans to borrowers experiencing financial difficulty during the years ended December 31, 2025, 2024, and 2023:
                                                                        For the Year Ended December 31, 2025
Type of Modifications
Commercial real estate
Term extensions ranging between 15 and 17 months
Commercial business
Interest rate reduction and/or term extensions ranging between 12 and 60 months
                                                                        For the Year Ended December 31, 2024
Type of Modifications
Commercial real estateInterest rate reduction
Commercial business
Term extensions ranging between 15 and 60 months
                                                                        For the Year Ended December 31, 2023
Type of Modifications
Commercial real estate
12 month term extension
Construction
12 month term extension
Commercial business
12 month term extension, interest rate reduction, and/or principal forgiveness
(7)     Loans Receivable and Allowance for Credit Losses (continued)

The Company closely monitors the performance of modifications of loans to borrowers experiencing financial difficulty to understand the effectiveness of these modification efforts. During 2025, the Company extended an additional $1.0 million of credit to provide additional working capital to supplement reduced federal funding support, to a commercial business customer whose loan had been previously modified. The Company did not extend any commitments to lend additional funds to borrowers experiencing financial difficulty whose loans had been modified during the years ended December 31, 2024 and 2023.

The following tables presents the aging analysis of modifications of loans to borrowers experiencing financial difficulty at December 31, 2025, 2024, and 2023:

December 31, 2025
Current30-59 Days60-89 Days90 Days or MoreNon-accrualTotal
(In thousands)
Commercial real estate$12,328 $— $— $— $— $12,328 
Commercial business10,488 — — — 1,308 11,796 
Total loans$22,816 $— $— $— $1,308 $24,124 
December 31, 2024
Current30-59 Days60-89 Days90 Days or MoreNon-accrualTotal
(In thousands)
Commercial real estate$1,520 $— $— $— $1,029 $2,549 
Commercial business1,759 39 — — 2,050 3,848 
Total loans$3,279 $39 $— $— $3,079 $6,397 
December 31, 2023
Current30-59 Days60-89 Days90 Days or MoreNon-accrualTotal
(In thousands)
Commercial real estate$1,035 $— $— $— $— $1,035 
Construction 2,317 — — — — 2,317 
Commercial business— — 4,917 — 237 5,154 
Total loans$3,352 $— $4,917 $— $237 $8,506 

The activity in the allowance for credit losses on loans for the years ended December 31, 2025, 2024 and 2023 are as follows:

Years Ended December 31,
202520242023
(In thousands)
Balance at beginning of period$59,958 $55,096 $52,803 
Initial allowance related to PCD loans3,202 — — 
Provision for credit losses9,822 14,451 4,787 
Recoveries1,443 609 1,000 
Charge-offs(7,224)(10,198)(3,494)
Balance at end of period$67,201 $59,958 $55,096 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

The activity in the allowance for credit losses by portfolio segment for the years ended December 31, 2025, 2024, and 2023, are as follows:
For the Year Ended December 31, 2025
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial BusinessHome Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Balance at beginning of period$13,173 $9,542 $15,969 $6,703 $13,112 $1,452 $$59,958 
Initial allowance related to PCD loans— — — — 3,202 — — 3,202 
Provision for (reversal of) credit losses37 1,105 2,741 (36)6,071 (253)157 9,822 
Recoveries73 — 1,269 90 1,443 
Charge-offs— — (119)(53)(6,887)— (165)(7,224)
Balance at end of period$13,283 $10,647 $18,592 $6,617 $16,767 $1,289 $$67,201 

For the Year Ended December 31, 2024
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial BusinessHome Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Balance at beginning of period$13,017 $8,742 $15,757 $7,758 $7,923 $1,892 $$55,096 
Provision for (reversal of) credit losses147 800 296 (1,059)14,467 (459)259 14,451 
Recoveries11 — 36 536 19 609 
Charge-offs(2)— (120)— (9,814)— (262)(10,198)
Balance at end of period$13,173 $9,542 $15,969 $6,703 $13,112 $1,452 $$59,958 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

For the Year Ended December 31, 2023
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial BusinessHome Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Balance at beginning of period$11,802 $7,877 $18,111 $6,425 $6,897 $1,681 $10 $52,803 
Provision for (reversal of) credit losses1,783 865 (2,225)1,333 2,765 160 106 4,787 
Recoveries17 — 21 — 879 77 1,000 
Charge-offs(585)— (150)— (2,618)(26)(115)(3,494)
Balance at end of period$13,017 $8,742 $15,757 $7,758 $7,923 $1,892 $$55,096 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

The following tables present individually analyzed loans by segment, excluding PCD loans, at December 31, 2025 and 2024:
At December 31, 2025
Recorded InvestmentUnpaid Principal BalanceSpecific Allowance
(In thousands)
With no allowance recorded:
Real estate loans:
One-to-four family$10,988 $10,992 $— 
Multifamily300 300 — 
Commercial real estate5,492 5,618 — 
Construction5,923 5,975 — 
Commercial business loans13,658 21,112 — 
Consumer loans:
Home equity loans and advances1,262 1,262 — 
37,623 45,259 — 
With a specific allowance recorded:
— — — 
Total:
Real estate loans:
One-to-four family10,988 10,992 — 
Multifamily300 300 — 
Commercial real estate5,492 5,618 — 
Construction5,923 5,975 — 
Commercial business loans13,658 21,112 — 
Consumer loans:
Home equity loans and advances1,262 1,262 — 
Total loans$37,623 $45,259 $— 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

At December 31, 2024
Recorded InvestmentUnpaid Principal BalanceSpecific Allowance
(In thousands)
With no allowance recorded:
Real estate loans:
One-to-four family$9,167 $9,216 $— 
Multifamily5,743 5,743 — 
Commercial real estate7,517 8,089 — 
Commercial business loans15,184 19,553 — 
Consumer loans:
Home equity loans and advances331 331 — 
37,942 42,932 — 
With a specific allowance recorded:
— — — 
Total:
Real estate loans:
One-to-four family9,167 9,216 — 
Multifamily5,743 5,743 — 
Commercial real estate7,517 8,089 — 
Commercial business loans15,184 19,553 — 
Consumer loans:
Home equity loans and advances331 331 — 
Total loans$37,942 $42,932 $— 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

The following table presents interest income recognized for individually analyzed loans by loan segment, excluding PCD loans, for the years ended December 31, 2025, 2024 and 2023:
For the Years Ended December 31,
202520242023
Average Recorded InvestmentInterest Income RecognizedAverage Recorded InvestmentInterest Income RecognizedAverage Recorded InvestmentInterest Income Recognized
                                           (In thousands)
Real estate loans:
One-to-four family$10,439 $$4,515 $16 $4,328 $196 
Multifamily2,024 — 2,383 420 19 
Commercial real estate6,445 57 9,818 204 16,234 694 
Construction4,734 — — — — — 
Commercial business loans10,924 36 11,761 100 6,134 331 
Consumer loans:
Home equity loans and advances735 245 646 42 
Totals$35,301 $101 $28,722 $324 $27,762 $1,282 

Management prepares an analysis each quarter that categorizes the entire loan portfolio by certain risk characteristics such as loan type (residential mortgage, commercial mortgage, construction, commercial business, etc.) and loan risk rating. The categorization of loans into risk categories is based upon relevant information about the borrower's ability to service their debt.

The Company utilizes a risk rating system to summarize its loan portfolio into categories with similar risk characteristics. Loans deemed to be “acceptable quality” are rated 1 through 4w, with a rating established for loans with minimal risk. Loans rated 4w are watch loans, which may have a potential concern that warrants increased oversight and tracking by management. We enhanced our level of scrutiny and focus regarding documentation related to credit risk rating benchmark guidelines that pertain to debt-service coverage ratios, LTV ratios, borrower strength, asset quality, and funded cash reserves. Other factors such as guarantees, market strength and remaining loan term and borrower equity are also reviewed and are factored into determining the credit risk rating assigned to each loan. Loans that are deemed to be of “questionable quality” are rated 5 (Special Mention) or 6 (Substandard). Loans with adverse classifications are rated 7 (Doubtful) or 8 (Loss). The risk ratings are also confirmed through periodic loan review examinations which are currently performed by both an independent third-party and the Company's credit risk review department. Results from examinations are presented to the Audit Committee of the Board of Directors.
(7)     Loans Receivable and Allowance for Credit Losses (continued)

The following table summarizes the Company's loans by year of origination and internally assigned credit risk rating, excluding PCD loans, at December 31, 2025 and 2024:
Loans by Year of Origination at December 31, 2025
20252024202320222021PriorRevolving LoansRevolving Loans to Term LoansTotal
(In thousands)
One-to-Four Family
Pass$93,590 $104,411 $148,597 $705,476 $687,522 $807,680 $— $— $2,547,276 
Special mention— — — — — — — — — 
Substandard— 1,099 1,841 3,024 805 4,207 — — 10,976 
Total One-to-Four Family93,590 105,510 150,438 708,500 688,327 811,887 — — 2,558,252 
Gross charge-offs— — — — — — — — — 
Multifamily
Pass233,695 32,267 135,839 345,763 316,250 562,566 — — 1,626,380 
Special mention— — — — 40,638 — — — 40,638 
Substandard— — — 10,595 — — — — 10,595 
Total Multifamily233,695 32,267 135,839 356,358 356,888 562,566 — — 1,677,613 
Gross charge-offs— — — — — — — — — 
Commercial Real Estate
Pass410,896 113,417 173,838 459,278 357,327 923,667 — — 2,438,423 
Special mention— — — 7,007 — 9,222 — — 16,229 
Substandard3,692 — 350 12,258 1,486 40,822 — — 58,608 
Total Commercial Real Estate414,588 113,417 174,188 478,543 358,813 973,711 — — 2,513,260 
Gross charge-offs— — — 77 42 — — — 119 
Construction
Pass128,667 118,823 146,996 67,146 — — — — 461,632 
Special mention— — — — — — — — — 
Substandard— — 1,883 5,923 — — — — 7,806 
Total Construction128,667 118,823 148,879 73,069 — — — — 469,438 
Gross charge-offs$— $— $— $53 $— $— $— $— $53 
(7)     Loans Receivable and Allowance for Credit Losses (continued)


Loans by Year of Origination at December 31, 2025
20252024202320222021PriorRevolving LoansRevolving Loans to Term LoansTotal
(In thousands)
Commercial Business
Pass$111,377 $142,106 $86,839 $58,117 $24,846 $41,814 $266,563 $— $731,662 
Special mention— — — — — 44 100 — 144 
Substandard1,512 1,662 1,263 2,106 582 7,130 20,731 — 34,986 
Doubtful— — — — — — — — — 
Total Commercial Business112,889 143,768 88,102 60,223 25,428 48,988 287,394 — 766,792 
Gross charge-offs295 634 926 2,097 753 2,182 — — 6,887 
Home Equity Loans and Advances
Pass19,850 13,049 11,818 15,368 13,334 71,446 37,417 71,582 253,864 
Special mention— — — — — — — — — 
Substandard— — 49 248 — 597 368 — 1,262 
Total Home Equity Loans and Advances19,850 13,049 11,867 15,616 13,334 72,043 37,785 71,582 255,126 
Gross charge-offs— — — — — — — — — 
Other Consumer Loans
Pass2,381 37 49 24 — 50 354 — 2,895 
Special mention— — — — — — — — — 
Substandard— — — — — — — — — 
Total Other Consumer Loans2,381 37 49 24 — 50 354 — 2,895 
Gross charge-offs13 58 40 43 10 — — 165 
Total Loans1,005,660 526,871 709,362 1,692,333 1,442,790 2,469,245 325,533 71,582 8,243,376 
Total gross charge-offs$296 $647 $984 $2,267 $838 $2,192 $— $— $7,224 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

Loans by Year of Origination at December 31, 2024
20242023202220212020PriorRevolving LoansRevolving Loans to Term LoansTotal
(In thousands)
One-to-Four Family
Pass$112,748 $154,862 $755,791 $745,505 $250,819 $681,085 $— $— $2,700,810 
Special mention— — — — — — — — — 
Substandard— 1,399 2,115 1,623 598 4,392 — — 10,127 
Total One-to-Four family112,748 156,261 757,906 747,128 251,417 685,477 — — 2,710,937 
Gross charge-offs— — — — — — — 
Multifamily
Pass35,835 131,728 320,011 338,781 169,959 446,956 — — 1,443,270 
Special mention— — — — — — — — — 
Substandard— — 5,743 9,272 — 2,356 — — 17,371 
Total Multifamily35,835 131,728 325,754 348,053 169,959 449,312 — — 1,460,641 
Gross charge-offs— — — — — — — — — 
Commercial Real Estate
Pass122,219 189,692 454,357 370,684 153,058 920,255 — — 2,210,265 
Special mention— — 994 — 2,776 33,737 — — 37,507 
Substandard— — 14,938 993 3,696 72,484 — — 92,111 
Total Commercial Real Estate122,219 189,692 470,289 371,677 159,530 1,026,476 — — 2,339,883 
Gross charge-offs— — — — — 120 — — 120 
Construction
Pass64,631 163,466 198,938 35,443 — — — — 462,478 
Special mention— — — — — — — — — 
Substandard— — 11,095 — — — — — 11,095 
Total Construction64,631 163,466 210,033 35,443 — — — — 473,573 
Gross charge-offs$— $— $— $— $— $— $— $— $— 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

Loans by Year of Origination at December 31, 2024
20242023202220212020PriorRevolving LoansRevolving Loans to Term LoansTotal
(In thousands)
Commercial Business
Pass$105,272 $57,038 $50,164 $28,995 $22,253 $38,997 $281,289 $— $584,008 
Special mention— — 108 — 294 106 2,371 — 2,879 
Substandard— 183 1,366 486 1,100 6,319 25,659 — 35,113 
Total Commercial Business105,272 57,221 51,638 29,481 23,647 45,422 309,319 — 622,000 
Gross charge-offs— — 167 195 — 3,760 5,692 — 9,814 
Home Equity Loans and Advances
Pass14,999 15,169 17,655 15,674 8,974 76,210 41,098 68,899 258,678 
Special mention— — — — — — — — — 
Substandard— 50 — — — 219 62 — 331 
Total Home Equity Loans and Advances14,999 15,219 17,655 15,674 8,974 76,429 41,160 68,899 259,009 
Gross charge-offs— — — — — — — — — 
Other Consumer Loans
Pass2,859 85 85 — 63 304 — 3,404 
Special mention— — — — — — — — — 
Substandard— — — — — — — — — 
Total Other Consumer Loans2,859 85 85 — 63 304 — 3,404 
Gross charge-offs— 74 121 65 — — — 262 
Total Loans458,563 713,672 1,833,360 1,547,464 613,527 2,283,179 350,783 68,899 7,869,447 
Total gross charge-offs$— $74 $288 $260 $— $3,884 $5,692 $— $10,198 
v3.25.4
Office Properties and Equipment, net
12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Office Properties and Equipment, net Office Properties and Equipment, net
Office properties and equipment less accumulated depreciation at December 31, 2025 and 2024 are summarized as follows:
December 31,
20252024
(In thousands)
Land$14,290 $14,623 
Buildings30,209 29,910 
Land and building improvements53,795 49,737 
Leasehold improvements30,284 28,258 
Furniture and equipment40,666 37,787 
169,244 160,315 
Less accumulated depreciation and amortization(86,259)(78,543)
Total office properties and equipment, net$82,985 $81,772 
    
Land and building improvements at December 31, 2025 and 2024 included $1.7 million and $1.0 million, respectively, in construction in progress for the renovation of various office facilities. During the year ended December 31, 2025, the Bank classified a facility totaling $1.2 million as held-for-sale.
Depreciation and amortization expense for the years ended December 31, 2025, 2024 and 2023, amounted to $8.6 million, $8.2 million, $7.8 million, respectively.
v3.25.4
Leases
12 Months Ended
Dec. 31, 2025
Leases [Abstract]  
Leases Leases
The Company leases real estate property for branches and office space. At December 31, 2025 and 2024, all of the Company's leases are classified as operating leases.

The Company determines if an arrangement is a lease at inception. Topic 842 requires lessees to recognize a right-of-use asset and a lease liability, measured at the present value of the future minimum lease payments, at the lease commencement date. The calculated amount of the right-of-use asset and lease liabilities are impacted by the length of the lease term and the discount rate used to calculate the present value of minimum lease payments. At December 31, 2025 and 2024, the weighted average remaining lease term for operating leases was 5.5 years and 5.7 years, respectively, and the weighted average discount rate used in the measurement of operating lease liabilities was 3.39% and 3.30%, respectively.

The Company elected to account for the lease and non-lease components separately since such amounts are readily determinable under the Company's lease contracts. Operating lease expense is recognized on a straight-line basis over the lease term, while variable lease payments are recognized as incurred. Variable lease payments include common area maintenance charges, real estate taxes, repairs and maintenance costs and utilities. Operating and variable lease expenses are recorded in occupancy expense in the Consolidated Statements of Income. During the years ended December 31, 2025 and 2024, operating and variable lease expenses totaled approximately $3.2 million and $2.8 million, respectively.

There were no sale and leaseback transactions, leveraged leases or lease transactions with related parties during the years ended December 31, 2025 and 2024. At December 31, 2025, the Company had no leases which had not yet commenced.

The following table summarizes lease payment obligations for each of the next five years and thereafter as follows:

Lease Payment Obligations at December 31,
20252024
(In thousands)
One year or less$4,658 $4,666 
After one year to two years3,850 4,232 
After two years to three years3,283 3,272 
After three years to four years2,296 2,809 
After four years to five years1,149 1,899 
Thereafter2,953 2,742 
Total undiscounted cash flows18,189 19,620 
Discount on cash flows(1,666)(1,796)
Total lease liability$16,523 $17,824 
v3.25.4
Goodwill and Intangible Assets
12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Intangible Assets Goodwill and Intangible Assets
Intangible assets at December 31, 2025 and 2024 are summarized as follows:
December 31,
20252024
(In thousands)
Goodwill$110,715 $110,715 
Core deposit intangibles6,946 8,964 
Other intangible assets1,248 — 
Mortgage servicing rights1,393 1,329 
$120,302 $121,008 

Mortgage servicing rights' amortization expense for the years ended December 31, 2025, 2024, and 2023 amounted to $214,000, $241,000, and $239,000, respectively. Core deposit intangible amortization expense for the years ended December 31, 2025, 2024, and 2023 totaled $2.0 million, $2.2 million, and $2.4 million, respectively. Other intangible assets expense for the year ended December 31, 2025 totaled $152,000. During the years ended December 31, 2024 and 2023, there was no other intangible assets expense.

Scheduled amortization of core deposit intangibles for each of the next five years and thereafter is as follows:
Year Ended December 31,Core Deposit Intangible Amortization
(In thousands)
2026$1,829 
20271,615 
20281,361 
2029994 
2030657 
Thereafter490 
Total$6,946 
v3.25.4
Deposits
12 Months Ended
Dec. 31, 2025
Deposits [Abstract]  
Deposits Deposits
Deposits at December 31, 2025 and 2024 are summarized as follows:
December 31,
20252024
BalanceWeighted Average RateBalanceWeighted Average Rate
(Dollars in thousands)
Non-interest-bearing demand$1,517,399 — %$1,438,030 — %
Interest-bearing demand1,985,871 1.99 2,021,312 2.19 
Money market accounts1,465,028 2.59 1,241,691 2.82 
Savings and club deposits623,444 0.47 652,501 0.75 
Certificates of deposit2,852,337 3.80 2,742,615 4.24 
          Total deposits$8,444,079 2.23 %$8,096,149 2.47 %

The aggregate amount of certificates of deposit that meet or exceed $250,000 totaled approximately $723.3 million and $677.3 million at December 31, 2025 and 2024, respectively.

Within total deposits, brokered deposits totaled $46.2 million and $50.1 million at December 31, 2025 and 2024, respectively. The Company also offers its customers reciprocal deposit arrangements, which provide FDIC deposit insurance for accounts that would otherwise exceed deposit insurance limits, which totaled $262.1 million and $186.1 million as of December 31, 2025 and 2024, respectively.

Scheduled maturities of certificates of deposit accounts at December 31, 2025 and 2024 are summarized as follows:
December 31,
20252024
(In thousands)
One year or less$2,468,641 $2,422,249 
After one year to two years263,211 281,961 
After two years to three years86,017 21,909 
After three years to four years14,037 8,193 
After four years20,431 8,303 
$2,852,337 $2,742,615 

Interest expense on deposits for the years ended December 31, 2025, 2024, and 2023 are summarized as follows:
Years Ended December 31,
202520242023
(In thousands)
Demand (including money market accounts)$81,803 $88,337 $62,070 
Savings and club deposits4,015 5,130 2,231 
Certificates of deposit111,556 108,916 60,861 
$197,374 $202,383 $125,162 
v3.25.4
Borrowings
12 Months Ended
Dec. 31, 2025
Debt Disclosure [Abstract]  
Borrowings Borrowings
Borrowings at December 31, 2025 and 2024 are summarized as follows:
December 31,
2025202420252024
BalanceWeighted Average Interest Rate
(In thousands)
FHLB advances$1,176,415 $1,073,564 4.17 %4.42 %
Junior subordinated debentures7,057 7,036 6.92 7.56 
$1,183,472 $1,080,600 4.19 %4.44 %

At December 31, 2025 and 2024, the Company had no outstanding overnight lines of credit with the FHLB. Interest expense on overnight advances for the years ended December 31, 2025, 2024, and 2023, were $45,000, $18,000, and $923,000, respectively.

At December 31, 2025, the Bank could borrow funds from the FHLB under an overnight advance program up to the Bank's maximum borrowing capacity based on the ability to collateralize such borrowings. Members in good standing can borrow up to 50% of their asset size as long as they have qualifying collateral to support the advance and purchase of FHLB capital. Additionally, at both December 31, 2025 and 2024, the Bank had unused correspondent bank lines of credit with an aggregate overnight borrowing capacity of $150.0 million.

At December 31, 2025, FHLB advances were at fixed rates with maturities between January 2026 and November 2030 and at December 31, 2024, FHLB advances were at fixed rates with maturities between January 2025 and October 2029. At December 31, 2025 and 2024, FHLB advances were collateralized by FHLB capital stock owned by the Bank, and loans with carrying values totaling $3.2 billion and $3.6 billion, respectively. Loans securing advances consists of one-to-four family, multifamily and commercial and home equity real estate loans. At December 31, 2025 and 2024, FHLB advances were also collateralized by securities with carrying values totaling $16.2 million and $15.4 million, respectively. Interest expense on fixed rate FHLB advances for the years ended December 31, 2025, 2024, and 2023, were $51.3 million, $70.4 million, and $61.5 million, respectively.

At December 31, 2025 and 2024, short-term FHLB advances totaling $393.7 million and $378.7 million, respectively, were designated as hedged items as part of a cash flow hedging program. See note 21 for information regarding these transactions.

Scheduled maturities of FHLB advances are summarized as follows:
Year Ended December 31, 2025
(In thousands)
One year or less$525,726 
After one year to two years225,139 
After two years to three years180,550 
After three years to four years225,000 
After four years20,000 
Total FHLB advances$1,176,415 
(12)    Borrowings (continued)

During 2021, the Company entered into a $30.0 million unsecured term note with a third party at a fixed interest rate of 3.35% and a maturity date of December 21, 2024. During the fourth quarter of 2023, this note was paid in full. Interest expense on the term note, for the years ended December 31, 2025, 2024, and 2023 was $0, $0, and $823,000, respectively.

During 2021, the Company also established a $30.0 million unsecured revolving credit facility with a third party at a variable rate indexed to the prime rate as published by the Wall Street Journal. During 2023, the Company utilized $1.5 million of the credit line and repaid it in full as of December 31, 2023. During the fourth quarter of 2023, this credit facility was terminated. Interest expense on the revolving credit facility for the years ended December 31, 2025, 2024 and 2023 was $0, $0, and $95,000, respectively.
At December 31, 2025 and 2024, the carrying value of junior subordinated debt balances was $7.1 million and $7.0 million, respectively. The balance outstanding at December 31, 2025 and 2024 represents debentures issued in 2003 by Stewardship Statutory Trust (the "Trust"), a statutory business trust that was acquired in the Stewardship merger. These floating rate debentures mature on September 17, 2033 and adjust quarterly at a rate of three-month SOFR plus 2.95%. At December 31, 2025 and 2024 the rate of interest was 6.92% and 7.56%, respectively. Interest expense for the years ended December 31, 2025, 2024, and 2023 was $562,000, $640,000, and $624,000, respectively.
v3.25.4
Stockholders' Equity
12 Months Ended
Dec. 31, 2025
Equity [Abstract]  
Stockholders' Equity Stockholders' Equity
Regulatory Capital

The Company and the Bank are subject to various regulatory capital requirements administered by the federal banking regulators, including a risk-based capital measure. The Federal Reserve establishes capital requirements, including well capitalized standards, for the consolidated financial holding company, and the Office of the Comptroller of the Currency (the "OCC") has similar requirements for the Bank. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company's Consolidated Statements of Financial Condition.

Federal regulators require federally insured depository institutions to meet several minimum capital standards: (1) total capital to risk-weighted assets of 8.0%; (2) tier 1 capital to risk-weighted assets of 6.0%; (3) common equity tier 1 capital to risk-weighted assets of 4.5%; and (4) tier 1 capital to adjusted total assets of 4.0%. In addition to establishing the minimum regulatory capital requirements, the regulations limit capital distributions and certain discretionary bonus payments to management if the institution does not hold a "capital conservation buffer" consisting of 2.5% of common equity tier 1 capital to risk-weighted assets above the amount necessary to meet its minimum risk-based capital requirements. The regulators established a framework for the classification of savings institutions into five categories: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized. Generally, an institution is considered well capitalized if it has: a total capital to risk-weighted assets ratio of at least 10.0%, a tier 1 capital to risk-weighted assets ratio of at least 8.0%, a common tier 1 capital to risk-weighted assets ratio of at least 6.5%, and a tier 1 capital to adjusted total assets ratio of at least 5.0%. As of December 31, 2025 and 2024, each of the Company and Columbia Bank exceeded all capital adequacy requirements to which it is subject.
    
Based upon most recent notification from federal banking regulators, the Bank was categorized as well capitalized under the regulatory framework for prompt corrective action. There are no conditions existing or events which have occurred since notification that management believes have changed the Bank's category.

The following tables presents the Company's and the Columbia Bank's actual capital amounts and ratios at December 31, 2025 and 2024 compared to the Federal Reserve Bank minimum capital adequacy requirements and the Federal Reserve Bank requirements for classification as a well-capitalized institution:
(13)    Stockholders' Equity (continued)

Regulatory Capital (continued)
ActualMinimum Capital Adequacy RequirementsMinimum Capital Adequacy Requirements With Capital Conservation BufferTo Be Well Capitalized Under Prompt Corrective Action Provisions
AmountRatioAmountRatioAmountRatioAmountRatio
Company(In thousands, except ratio data)
At December 31, 2025:
Total capital (to risk-weighted assets)$1,196,057 14.92 %$641,506 8.00 %$841,976 10.50 %N/AN/A
Tier 1 capital (to risk-weighted assets)1,125,002 14.03 481,129 6.00 681,600 8.50 N/AN/A
Common equity tier 1 capital (to risk-weighted assets)1,117,785 13.94 360,847 4.50 561,317 7.00 N/AN/A
Tier 1 capital (to adjusted total assets)1,125,002 10.27 438,061 4.00 438,061 4.00 N/AN/A
At December 31, 2024:
Total capital (to risk-weighted assets)$1,131,159 14.20 %$637,077 8.00 %$836,164 10.50 %N/AN/A
Tier 1 capital (to risk-weighted assets)1,067,445 13.40 477,808 6.00 676,895 8.50 N/AN/A
Common equity tier 1 capital (to risk-weighted assets)1,060,228 13.31 358,356 4.50 557,443 7.00 N/AN/A
Tier 1 capital (to adjusted total assets)1,067,445 10.02 426,319 4.00 426,319 4.00 N/AN/A
 Columbia Bank
At December 31, 2025:
Total capital (to risk-weighted assets)$1,129,574 14.09 %$641,534 8.00 %$842,014 10.50 %$801,918 10.00 %
Tier 1 capital (to risk-weighted assets)1,058,519 13.20 481,151 6.00 681,630 8.50 641,534 8.00 
Common equity tier 1 capital (to risk-weighted assets)1,058,519 13.20 360,863 4.50 561,342 7.00 521,247 6.50 
Tier 1 capital (to adjusted total assets)1,058,519 9.67 438,029 4.00 438,029 4.00 547,536 5.00 
At December 31, 2024:
Total capital (to risk-weighted assets)$1,090,717 14.41 %$605,734 8.00 %$795,025 10.50 %$757,167 10.00 %
Tier 1 capital (to risk-weighted assets)1,027,003 13.56 454,300 6.00 643,592 8.50 605,734 8.00 
Common equity tier 1 capital (to risk-weighted assets)1,027,003 13.56 340,725 4.50 530,017 7.00 492,159 6.50 
Tier 1 capital (to adjusted total assets)1,027,003 9.64 425,935 4.00 425,935 4.00 532,419 5.00 
(13)    Stockholders' Equity (continued)

Stock Repurchase Program    

On September 5, 2025, the Company announced that its Board of Directors authorized the Company's seventh stock repurchase program to acquire up to 1,800,000 shares, or approximately 1.7% of the Company's then issued and outstanding common stock. As of December 31, 2025, there were 926,696 shares authorized and remaining to be purchased under this program.

On May 25, 2023, the Company announced that its Board of Directors authorized the Company's sixth stock repurchase program to acquire up to 2,000,000 shares, or approximately 1.9% of the Company's then issued and outstanding common stock. This program expired in 2024 prior to its completion.
During the years ended December 31, 2025, 2024, and 2023 the Company repurchased 873,304 shares at a cost of approximately $13.4 million, or 15.29 per share, 365,116 shares at a cost of approximately $5.9 million, or $16.14 per share, and 4,242,693 shares at a cost of approximately $80.5 million, or $18.97 per share, respectively under these programs. Repurchased shares are held as treasury stock and are available for general corporate purposes.
v3.25.4
Employee Benefit Plans
12 Months Ended
Dec. 31, 2025
Retirement Benefits [Abstract]  
Employee Benefit Plans Employee Benefit Plans
Pension Plan, Retirement Income Maintenance Plan (the "RIM Plan"), Post-retirement Plan, and Split-Dollar Life Insurance Plans

The Company maintains a single employer, tax-qualified defined benefit pension plan (the "Pension Plan") which covers full-time employees hired prior to October 1, 2018, that satisfied the Pension Plan's eligibility requirements. The benefits are based on years of service and the employee's average compensation for the highest five consecutive years of employment.

The Company's policy is to fund at least the minimum contribution required by the Employee Retirement Income Security Act of 1974. GAAP requires an employer to: (a) recognize in its statement of financial position the over-funded or under-funded status of a defined benefit post-retirement plan measured as the difference between the fair value of plan assets and the benefit obligation; (b) measure a plan’s assets and its obligations that determine its funded status at the end of the employer’s fiscal year (with limited exceptions); and (c) recognize as a component of other comprehensive income (loss), net of tax, the actuarial gains and losses and the prior service costs and credits that arise during the period. The assets of the plan are primarily invested in fixed income and equity funds.
    
The Company also maintains a Retirement Income Maintenance Plan (the "RIM" Plan), which is a non-qualified defined benefit plan which provides benefits to all employees of the Company if their benefits under the Pension Plan are limited by Internal Revenue Code 415 and 401(a)(17).    

In addition, the Company provides certain health care and life insurance benefits to eligible retired employees under a Post-retirement Plan. The Company accrues the cost of retiree health care and other benefits during the employees’ period of active service. Effective January 1, 2019, the Post-retirement Plan was closed to new hires.

The Company also provides life insurance benefits to eligible employees under an endorsement split-dollar life insurance program. The Company recognizes a liability for future benefits applicable to endorsement split-dollar life insurance arrangements that provide death benefits post-retirement. Through its mergers, the Company recognized additional liability for future benefits applicable to endorsement split-dollar life insurance arrangements that provide death benefits post-retirement under the benefit programs of certain other previously acquired banks.
(14)    Employee Benefit Plans (continued)

Pension Plan, Retirement Income Maintenance Plan (the "RIM Plan") Post-retirement Plan, and Split-Dollar Life Insurance Plans (cont'd)

The following table sets forth information regarding the Pension Plan, RIM, Post-retirement Plan and Split-Dollar Life Insurance Plans at December 31, 2025 and 2024:

At December 31,
20252024202520242025202420252024
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
(In thousands)
Change in benefit obligation:
Benefit obligation at beginning of year$246,890 $255,868 $12,812 $13,550 $22,271 $21,148 $15,791 $16,957 
Service cost3,786 4,504 209 245 206 269 229 229 
Interest cost13,092 12,784 675 649 1,148 1,118 864 834 
Actuarial loss (gain) 7,396 (15,168)293 (1,287)(369)(2,150)1,203 (2,102)
Benefits paid(16,225)(11,098)(455)(345)(1,071)(617)— (127)
Impact of plan merger (1)
— — — — — 2,503 — — 
Benefit obligation at end of year254,939 246,890 13,534 12,812 22,185 22,271 18,087 15,791 
Change in plan assets:
Fair value of plan assets at beginning of year477,763 453,559 — — — — — — 
Actuarial return gain on plan assets59,150 35,302 — — — — — — 
Employer contributions— — 455 345 1,071 617 — 127 
Benefits paid(16,225)(11,098)(455)(345)(1,071)(617)— (127)
Impact of plan merger (1)
— — — — — — — — 
Fair value of plan assets at end of year520,688 477,763 — — — — — — 
Funded status at end of year$265,749 $230,873 $(13,534)$(12,812)$(22,185)$(22,271)$(18,087)$(15,791)
(1) During 2024, the RSI Post-retirement Plan was merged into the Columbia Bank Post-retirement Plan.

At December 31, 2025 and 2024, the unfunded liability for the RIM Plan and Post-retirement Plan of $13.5 million and $12.8 million, and $22.2 million and $22.3 million, respectively, was included in other liabilities in the Consolidated Statements of Financial Condition, and the over-funded pension benefits associated with the Pension Plan totaling $265.7 million and $230.9 million, respectively, were included in other assets in the Consolidated Statements of Financial Condition.

The actuarial gains/losses related to the change in benefit obligations for the year ended December 31, 2025 resulted from a decrease in the discount rates and the update of census data. The actuarial gains related to the change in the benefit obligations for the year ended December 31, 2024 resulted from an increase in the discount rates and the update of census data.
(14)    Employee Benefit Plans (continued)

Pension Plan, Retirement Income Maintenance Plan (the "RIM Plan") Post-retirement Plan, and Split-Dollar Life Insurance Plans (cont'd)

The components of accumulated other comprehensive income related to the Pension Plan, RIM Plan, and Post-retirement Plan and Split-Dollar Life Insurance Plan on a pre-tax basis, at December 31, 2025, 2024, and 2023, are summarized in the following table:
At December 31,
20252024
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life InsurancePension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
(In thousands)
Unrecognized prior service costs$— $— $— $133 $— $— $— $183 
Unrecognized net actuarial loss (income)23,672 998 (2,207)(794)40,412 704 (1,835)(2,086)
Total accumulated other comprehensive loss (income)$23,672 $998 $(2,207)$(661)$40,412 $704 $(1,835)$(1,903)

At December 31, 2023
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
(In thousands)
Unrecognized prior service costs$— $— $— $238 
Unrecognized net actuarial loss59,463 2,102 787 16 
Total accumulated other comprehensive loss$59,463 $2,102 $787 $254 

Net periodic (income) benefit cost for the Pension Plan, RIM Plan, Post-retirement Plan and Split-Dollar Life Insurance plan benefits for the years ended December 31, 2025 and 2024, and 2023, includes the following components:

For the Year Ended December 31, 2025
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance Affected Line Item in the Consolidated Statements of Income
(In thousands)
Service cost$3,786 $209 $206 $229 Compensation and employee benefits
Interest cost13,092 675 1,148 864 Other non-interest expense
Expected return on plan assets(35,014)— — — Other non-interest expense
Amortization:
Prior service cost— — — 50 Other non-interest expense
Net (income)— — — (89)Other non-interest expense
Net periodic (income) benefit cost $(18,136)$884 $1,354 $1,054 
(14)    Employee Benefit Plans (continued)

Pension Plan, Retirement Income Maintenance Plan (the "RIM Plan") Post-retirement Plan, and Split-Dollar Life Insurance Plans (cont'd)
For the Year Ended December 31, 2024
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance Affected Line Item in the Consolidated Statements of Income
(In thousands)
Service cost$4,504 $245 $269 $229 Compensation and employee benefits
Interest cost12,784 649 1,118 834 Other non-interest expense
Expected return on plan assets(32,701)— — — Other non-interest expense
Amortization:
Prior service cost— — — 56 Other non-interest expense
Net loss (income)1,283 110 (22)— Other non-interest expense
Net periodic (income) benefit cost $(14,130)$1,004 $1,365 $1,119 

For the Year Ended December 31, 2023
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance Affected Line Item in the Consolidated Statements of Income
(In thousands)
Service cost$4,679 $277 $215 $277 Compensation and employee benefits
Interest cost11,637 632 970 818 Other non-interest expense
Expected return on plan assets(30,771)— — — Other non-interest expense
Amortization:
Prior service cost— — — 56 Other non-interest expense
Net loss796 57 — — Other non-interest expense
Net periodic (income) benefit cost $(13,659)$966 $1,185 $1,151 

There were no contributions made to the Pension Plan during the year ended December 31, 2025.
(14)    Employee Benefit Plans (continued)

Pension Plan, Retirement Income Maintenance Plan (the "RIM Plan") Post-retirement Plan, and Split-Dollar Life Insurance Plans (cont'd)

The weighted average actuarial assumptions used in the plan determinations at and for the years ended December 31, 2025, 2024, and 2023 were as follows:
At and For the Year Ended December 31, 2025
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
Weighted average assumptions used to determine benefit obligation:
Discount rate5.65 %5.45 %5.49 %5.74 %
Rate of compensation increase 4.50 4.50 N/A4.50 
Weighted average assumptions used to determine net periodic benefit cost:
Discount Rates:
Benefit obligation5.76 %5.67 %5.66 %5.81 %
Remeasurement rate5.66 N/AN/AN/A
Service cost5.89 5.77 5.88 5.96 
Remeasurement rate5.89 N/AN/AN/A
Interest cost5.47 5.40 5.36 5.56 
Remeasurement rate5.21 N/AN/AN/A
Expected rate of return on plan assets7.30 N/AN/AN/A
Remeasurement rateN/AN/AN/AN/A
Rate of compensation increase 4.50 4.50 N/A4.50 
At and For the Year Ended December 31, 2024
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
Weighted average assumptions used to determine benefit obligation:
Discount rate5.76 %5.67 %5.66 %5.81 %
Rate of compensation increase 4.50 4.50 N/A4.50 
Weighted average assumptions used to determine net periodic benefit cost:
Discount Rates:
Benefit obligation5.07 %5.01 %4.96 %5.11 %
Remeasurement rate5.51 N/AN/AN/A
Service cost5.16 5.09 5.79 5.23 
Remeasurement rate5.60 N/AN/AN/A
Interest cost4.96 4.89 4.87 4.99 
Remeasurement rate5.37 N/AN/AN/A
Expected rate of return on plan assets7.25 N/AN/AN/A
Remeasurement rateN/AN/AN/AN/A
Rate of compensation increase 4.50 4.50 N/A4.50 
(14)    Employee Benefit Plans (continued)

Pension Plan, Retirement Income Maintenance Plan (the "RIM Plan") Post-retirement Plan, and Split-Dollar Life Insurance Plans (cont'd)

At and For the Year Ended December 31, 2023
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
Weighted average assumptions used to determine benefit obligation:
Discount rate5.07 %5.01 %4.96 %5.11 %
Rate of compensation increase 4.50 4.50 N/A4.50 
Weighted average assumptions used to determine net periodic benefit cost:
Discount Rates:
Benefit obligation5.26 %5.21 %5.18 %5.31 %
Remeasurement rate5.19 N/AN/AN/A
Service cost5.36 5.28 5.30 5.41 
Remeasurement rate5.26 N/AN/AN/A
Interest cost5.14 5.10 5.07 5.19 
Remeasurement rate5.16 N/AN/AN/A
Expected rate of return on plan assets7.50 N/AN/AN/A
Remeasurement rate7.50 N/AN/AN/A
Rate of compensation increase 4.50 3.75 N/A3.75 

For measurement purposes in the Post-retirement Plan, the fiscal year 2025 weighted average health care cost trend rate assumption was 7.85% for pre-65-year olds and 10.15% for post-65 year olds, decreasing ratably to 4.50% through 2036, and the net periodic benefit cost was 8.30% for pre-65-year olds and 10.75% for post-65 year olds in 2024, decreasing ratably to 4.50% through 2035.

The Company provides its actuaries with certain rate assumptions used in measuring the respective benefit obligations. The most significant of these is the discount rate used to calculate the period-end present value of the benefit obligations, and the expense to be included in the following year's consolidated financial statements. A lower discount rate will result in a higher benefit obligation and expense, while a higher discount rate will result in a lower benefit obligation and expense. The discount rate assumption was determined based on a cash flow-yield curve model specific to the Company's pension and post-retirement plans.

The Company compares this rate to certain market indices, such as long-term treasury bonds, or pension liability indices, for reasonableness. The Company's expected return on plan assets assumption is based on historical investment return rate experience, evaluation of input from the trustee managing the pension plan's assets and Columbia Bank's Retirement and Savings and Investment Committee which has responsibility for managing these assets. The expected return on pension plan assets is also impacted by the target allocation of assets, which is based on the Company's goal of earning the highest rate of return while maintaining risk at acceptable levels.
(14)    Employee Benefit Plans (continued)

Pension Plan, Retirement Income Maintenance Plan (the "RIM Plan") Post-retirement Plan, and Split-Dollar Life Insurance Plans (cont'd)

Estimated future benefit payments, which reflect expected future service, as appropriate for the next five years and thereafter are as follows:
For the Year Ended December 31,Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
(In thousands)
2026$13,772 $727 $1,670 $656 
202714,731 872 1,771 731 
202815,619 945 1,803 807 
202916,373 992 1,808 881 
203017,022 1,021 1,738 953 
2031 - 203590,351 5,266 8,190 5,784 

The weighted average asset allocation of pension assets at December 31, 2025 and 2024 were as follows:
December 31,
20252024
Domestic equities34.4 %33.5 %
Foreign equities11.2 9.9 
Fixed income53.7 54.9 
Cash0.7 1.7 
Total100.0 %100.0 %

Management, under the direction of Columbia Bank's Pension Committee, strives to have pension assets sufficiently diversified so that adverse or unexpected results from one security class will not have a significant detrimental impact on the entire portfolio. The 2025 target allocation of assets and acceptable ranges around the targets are as follows:
Allowable Range
Equities
30 - 60%
Fixed income
40 - 70%
Cash
0 - 10%

Columbia Bank's Retirement and Savings and Investment Committee engages an investment management advisory firm to regularly monitor the performance of the asset managers and ensure they are within compliance with policy. The maximum and minimum of the range for each class is based on the fair value of the assets in the fund. If changes in fair value should lead to allocations outside these boundaries, management shall adjust exposure back to the established guidelines within 90 days or reevaluate the guidelines.
(14)    Employee Benefit Plans (continued)

Pension Plan, Retirement Income Maintenance Plan (the "RIM Plan") Post-retirement Plan, and Split-Dollar Life Insurance Plans (cont'd)

The following tables present the assets that are measured at fair value on a recurring basis by level within the U.S. GAAP fair value hierarchy as reported on the Statements of Net Assets Available for Plan Benefits at December 31, 2025 and 2024, respectively. A financial instrument's level within the fair value hierarchy's is based on the lowest level of input that is significant to the fair value measurement.

December 31, 2025
Fair Value Measurements
Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Money market mutual funds$3,585 $3,585 $— $— 
Mutual funds - value stock fund11,290 11,290 — — 
Mutual funds - fixed income279,384 279,384 — — 
Mutual funds - international stock58,293 58,293 — — 
Mutual funds - institutional stock index168,136 168,136 — — 
$520,688 $520,688 $— $— 

December 31, 2024
Fair Value Measurements
Fair valueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Money market mutual funds$8,229 $8,229 $— $— 
Mutual funds - value stock fund10,447 10,447 — — 
Mutual funds - fixed income262,148 262,148 — — 
Mutual funds - international stock47,314 47,314 — — 
Mutual funds - institutional stock index149,625 149,625 — — 
$477,763 $477,763 $— $— 

Money market and other mutual funds are reported at fair value in the tables above utilizing exchange quoted prices in active markets for identical instruments (Level 1 inputs).
(14)    Employee Benefit Plans (continued)

Pension Plan and Post-retirement Plan Acquired-RSI

Through the acquisition of RSI Bank on May 1, 2022, the Company acquired a funded pension plan and a non-funded post-retirement plan (the "RSI Pension Plan"). Effective September 30, 2023, the RSI Pension Plan was merged, and all liabilities were transferred into the Columbia Bank Pension Plan. Effective January 1, 2024, the RSI Post-retirement Plan was merged, and all assets were transferred into the Columbia Bank Post-retirement Plan.

There were no unfunded liabilities at December 31, 2025, and no net periodic (income) expense for these plans for the years ended December 31, 2025 and 2024, due to the merger of the RSI plans into the Columbia Bank Plans.

Net periodic (income) benefit cost for the RSI Pension Plan and RSI Post-retirement Plan for the year ended December 31, 2023 includes the following components:

For the Year Ended
December 31, 2023
Pension PlanPost-retirement PlanAffected Line Item in the Consolidated Statements of Income
(In thousands)
Service cost$— $67 Compensation and employee benefits
Interest cost305 107 Other non-interest expense
Expected return on plan assets(487)— Other non-interest expense
Amortization:
Net loss— (61)Other non-interest expense
Net periodic (income) benefit cost$(182)$113 


The weighted average actuarial assumptions used in the assumed determinations at and for the year ended 2023 were as follows:
At or For the Year Ended December 31, 2023
Pension Plan
Post-retirement Plan
Weighted average assumptions used to determine benefit obligation:
Discount rate— %5.16 %
Rate of compensation increase N/AN/A
Weighted average assumptions used to determine net periodic benefit cost:
Discount Rates:
Benefit obligation5.24 %5.16 %
Expected rate of return on plan assets7.00 %N/A
(14)    Employee Benefit Plans (continued)
    
Bank-owned life insurance ("BOLI")

The Company has BOLI, which is a tax-advantaged transaction that is used to partially fund obligations associated with employee compensation and benefit programs. Policies are purchased insuring officers of the Company using a single premium method of payment. BOLI is accounted for using the cash surrender value and the increase in cash surrender value is included in non-interest income in the Consolidated Statements of Income. At December 31, 2025 and 2024, the Company had $283.1 million and $274.9 million, respectively, in BOLI. BOLI income for the years ended December 31, 2025, 2024, and 2023 was $8.2 million, $7.3 million, and $10.1 million, respectively. In 2024, the Company initiated a BOLI 1035 Exchange, which was completed in 2025, and resulted in enhanced returns on this product.

Savings Income Maintenance Deferred Compensation Plan (the "SIM Plan")

Columbia Bank also maintains a non-qualified defined contribution plan that provides supplemental benefits to certain executives who are prevented from receiving the full benefits contemplated by the 401(k) Plan under tax law limits for tax-qualified plans. The contribution expense for the years ended December 31, 2025, 2024, and 2023, was approximately $1,000, $12,000, and $40,000, respectively.    

401(k) Plans

Columbia Bank has a 401(k) plan covering substantially all employees of the Bank. Columbia Bank may match a percentage of the first 3.00% to 4.50% contributed by participants. The Bank's matching contribution, if any, is determined by the Board of Directors in its sole discretion. The Company expense for the years ended December 31, 2025, 2024, and 2023, was approximately $2.9 million, $2.1 million, and $3.0 million respectively.


Employee Stock Ownership Plan ("ESOP")

Effective upon the consummation of the Company's reorganization in April 2018, an ESOP was established for all eligible employees. The ESOP used $45.4 million in proceeds from a 20-year term loan obtained from the Company to purchase 4,542,855 shares of Company common stock. The term loan principal is payable in installments through April 2038. Interest on the term loan is fixed at a rate of 4.75%.

Each year, Columbia Bank makes discretionary contributions to the ESOP, which are equal to principal and interest payments required on the term loan. Shares purchased with the loan proceeds were initially pledged as collateral for the term loan and is held in a suspense account for future allocation among participants. Contributions to the ESOP and shares released from the suspense account are allocated among the participants on the basis of compensation, as described by the ESOP in the year of allocation.

The ESOP shares pledged as collateral are reported as unearned ESOP shares in the Consolidated Statements of Financial Condition. As shares are committed to be released from collateral, the Company reports compensation expense equal to the average market price of the shares during the year, and the shares become outstanding for basic net income per common share computations. ESOP compensation expense for the years ended December 31, 2025, 2024, and 2023 was $3.4 million, $3.8 million and $4.1 million, respectively.

The ESOP shares were as follows:
At December 31,
20252024
(In thousands)
Allocated shares1,511 1,324 
Unearned shares2,793 3,021 
Total ESOP shares4,304 4,345 
Fair value of unearned ESOP shares$43,412 $47,757 
(14)    Employee Benefit Plans (continued)

SERP Plans

Columbia Bank has a SERP, which is a non-qualified plan which provides supplemental retirement benefits to eligible officers (those designated by the Board of Directors) of the Company who are prevented from receiving the full benefits contemplated by the ESOP's benefit formulas under tax law limits for tax-qualified plans. SERP compensation (benefit) expense for the years ended December 31, 2025, 2024, and 2023, was $40,000, $46,000, and $(32,000), respectively.

The Company also has a Supplemental Executive Retirement Plan for certain executives as designated by the Board of Directors to provide non-qualified retirement benefits to participants. For the years ended December 31, 2025 and 2024, the Company recorded an expense of $194,000 and $96,000, respectively, in connection with this Plan. There was no expense recorded in connection with this plan for the year ended December 31, 2023.

Through the acquisition of Roselle Bank, the Company acquired a non-contributory defined benefit supplemental executive retirement plan with the only participant being the former president of Roselle Bank. For the years ended December 31, 2025, 2024, and 2023, the Company recorded a net periodic benefit cost of $18,000, $19,000, and $20,000, respectively, in connection with this plan.

Through the acquisition of Freehold Bank, the Company acquired a non-contributory defined benefit supplemental executive plan with the only participant being the former president of Freehold Bank. For the years ended December 31, 2025, 2024, and 2023 the Company recorded a net periodic benefit cost of $14,000, $4,000, and $2,000 respectively, in connection with this plan. At December 31, 2025, this plan was merged into the Roselle Bank supplemental executive retirement plan for financial reporting purposes.

Director Retirement Income Plan

Through the acquisition of Freehold Bank, the Company acquired a Director Retirement Income Plan, which provides former retired directors a benefit equal to $12,000 per annum, payable in equal installments over 120 months when the director reaches emeritus age, as defined by the plan. At December 31, 2024, the Company had an accrued liability of $354,000 related to this plan. For the years ended December 31, 2025, 2024, and 2023 the net periodic benefit cost (income) recorded in connection with this plan was $15,000, $(1,000) and $(24,000), respectively. At December 31, 2025, the Company had no accrued liability related to this plan as it was merged into the Roselle Bank supplemental executive retirement plan for financial statement purposes.

Executive Incentive Retirement Plan

Through the acquisition of RSI Bank, the Company acquired an executive incentive retirement plan. At December 31, 2025 and 2024, the Company had an accrued liability of $269,000 and $255,000, respectively, related to this plan. For the years ended December 31, 2025, 2024, and 2023, the expense recorded in connection with this plan was $20,000, $2,000 and $11,000, respectively.

Board of Directors and Executive Deferred Compensation Plan and Key Life Insurance Plan

Through the acquisition of RSI Bank, the Company acquired a deferred compensation plan for the former Board of Directors and executives. Under the terms of the plan, for directors who elected not to receive directors' fees for a period of five years, their fees were used to purchase key insurance on the life of each director in the amount calculated to meet the Company's obligations under the plan. Benefits payable under the plan, which accrue in accordance with a ten year schedule, consist of monthly payments commencing at age 65 or five years from the date the plan was implemented for those participants who already reached age 65. At December 31, 2025 and 2024, the Company had an accrued liability of $161,000 and $227,000, respectively, related to this plan. For the years ended December 31, 2025, 2024 and 2023, the expense recorded in connection with this plan was $7,000, $9,000 and $11,000, respectively.
(14)    Employee Benefit Plans (continued)

Stock Based Deferral Plan and Directors Deferred Compensation Plan
    
In addition, Columbia Bank maintains a stock based deferral plan for certain executives and directors, and a cash based deferred compensation plan for directors. The Company records a deferred compensation equity account and corresponding contra-equity account for the cost of the shares held by the Stock Based Deferral Plan. Periodic adjustments to market are not required as participants do not have the option to take the distribution in cash. The Company records a liability for the amount deferred under the Directors Deferred Compensation Plan. There were no expenses recorded under these plans.

Stock Based Compensation

    At the Company's annual meeting of stockholders held on June 6, 2019, stockholders approved the Columbia Financial, Inc. 2019 Equity Incentive Plan ("2019 Plan") which provides for the issuance of up to 7,949,996 shares (2,271,427 restricted stock awards and 5,678,569 stock options) of common stock.

On March 6, 2024, 185,279 shares of restricted stock were awarded, with a grant date fair value of $16.49 per share. To fund the grant of restricted common stock, the Company issued shares from authorized but unissued shares.

On March 7, 2024, 27,162 shares of restricted stock were awarded, with a grant date fair value of $16.57 per share. To fund the grant of restricted common stock, the Company issued shares from authorized but unissued shares.

On December 13, 2024, 38,389 shares of restricted stock were awarded, with a grant date fair value of $16.93 per share. To fund the grant of restricted common stock, the Company issued shares from authorized but unissued shares.

On March 3, 2025, 177,186 shares of restricted stock were awarded, with a grant date fair value of $16.23 per share. To fund the grant of restricted common stock, the Company issued shares from authorized but unissued shares.

On March 11, 2025, 32,070 shares of restricted stock were awarded, with a grant date fair value of $15.01 per share. To fund the grant of restricted common stock, the Company issued shares from authorized but unissued shares.

At December 31, 2025, there were 207,594 shares remaining available for future restricted stock awards, and 1,171,755 shares remaining available for future stock option grants under the plan.

    Restricted shares granted under the 2019 Plan generally vest in equal installments, over the performance or service periods ranging from one year to five years, beginning one year from the date of grant. A portion of restricted shares awarded are performance awards, which vest upon the satisfactory attainment of certain corporate financial targets. Management recognizes compensation expense for the fair value of restricted shares on a straight-line basis over the requisite performance or service period. During the years ended December 31, 2025, 2024, and 2023, approximately $2.7 million, $3.5 million, and $4.1 million, respectively, in expense was recognized in regard to these awards. The expected future compensation expense related to the 438,894 non-vested restricted shares outstanding at December 31, 2025 is approximately $3.1 million over a weighted average period of 1.2 years.
(14)    Employee Benefit Plans (continued)

Stock Based Compensation (continued)

The following is a summary of the Company's restricted stock activity during the years ended December 31, 2025 and 2024:
Number of Restricted SharesWeighted Average Grant Date Fair Value
Non-vested at January 1, 2024
435,541 $16.77 
Grants250,830 16.57 
Vested(237,882)16.88 
Forfeited(5,930)17.23 
Non-vested at December 31, 2024
442,559 $16.59 
Grants209,256 16.04 
Vested(129,634)17.44 
Forfeited(83,287)16.27 
Non-vested at December 31, 2025
438,894 $16.14 
On March 6, 2024, options to purchase 286,265 shares of Company common stock were awarded with a grant date fair value of $6.13 per option. Stock options granted under the 2019 Plan generally vest in equal installments over the service period of three years beginning one year from the date of grant. These stock options were granted at an exercise price of $16.49, which represents the fair value of the Company's common stock price on the grant date based on the closing market price and have an expiration period of approximately 10 years. The fair value of stock options granted was estimated utilizing the Black-Scholes option pricing model using the following assumptions: expected life of 6 years, risk-free rate of return of 4.12%, volatility of 29.13%, and a dividend yield of 0.00%.

On December 13, 2024, options to purchase 18,810 shares of Company common stock were awarded with a grant date fair value of $6.19 per option. Stock options granted under the 2019 Plan generally vest in equal installments over the service period of three years beginning one year from the date of grant. These stock options were granted at an exercise price of $16.93, which represents the fair value of the Company's common stock price on the grant date based on the closing market price and have an expiration period of approximately 10 years. The fair value of stock options granted was estimated utilizing the Black-Scholes option pricing model using the following assumptions: expected life of 5 years risk-free rate of return of 4.25%, volatility of 32.89%, and a dividend yield of 0.00%.

On March 3, 2025 options to purchase 454,327 shares of Company common stock were awarded with a grant date fair value of $6.24 per option. Stock options granted under the 2019 Plan generally vest in equal installments over the service period of three years beginning one year from the date of grant. These stock options were granted at an exercise price of $16.23, which represents the fair value of the Company's common stock price on the grant date based on the closing market price and have an expiration period of approximately 10 years. The fair value of stock options granted was estimated utilizing the Black-Scholes option pricing model using the following assumptions: expected life of six years, risk-free rate of return of 4.02%, volatility of 31.10%, and a dividend yield of 0.00%.

The expected life of the options represents the period of time that stock options are expected to be outstanding and is estimated using the simplified approach, which assumes that all outstanding options will be exercised at the midpoint of the vesting date and full contractual term. The risk-free rate of return is based on the rates on the grant date of a U.S. Treasury Note with a term equal to the expected option life. Since the Company recently converted to a public company and does not have sufficient historical price data, the expected volatility is based on the historical daily stock prices of Company stock plus a peer group of similar entities based on factors such as industry, stage of life cycle, size and financial leverage. The Company has not paid any cash dividends on its common stock.

Management recognizes expense for the fair value of these awards on a straight-line basis over the requisite service period. During the years ended December 31, 2025, 2024, and 2023, approximately $2.1 million, $3.0 million, and $3.9 million, respectively, in expense was recognized in regard to these awards. The expected future compensation expense related to the 659,453 non-vested options outstanding at December 31, 2025 is $2.6 million over a weighted average period of 2.0 years.
(14)    Employee Benefit Plans (continued)

Stock Based Compensation (continued)

The following is a summary of the Company's option activity during the years ended December 31, 2025 and 2024:
Number of Stock Options Weighted Average Exercise PriceWeighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value
Outstanding, January 1, 2024
3,584,069 $16.20 6.1$11,602,267 
Granted305,075 16.52 — — 
Exercised(86,920)15.87 — — 
Expired(16,788)16.94 — — 
    Forfeited (28,404)16.90 — — 
Outstanding, December 31, 2024
3,757,032 $16.22 5.4$574,569 
Granted454,327 16.23 — — 
Exercised(5,837)16.10 — — 
Expired(108,731)16.17 — — 
Forfeited(71,076)16.36 — — 
Outstanding, December 31, 2025
4,025,715 $16.22 4.8— 
Options exercisable at December 31, 2025
3,366,262 $16.22 4.0$— 

The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value, the difference between the Company's closing stock price on the last trading day of the period and the exercise price, multiplied by the number of in-the-money options.
During the years ended December 31, 2025, 2024 and 2023, the aggregate intrinsic value of options exercised was approximately $4,000, $261,000, and $154,000, respectively.
v3.25.4
Income Taxes
12 Months Ended
Dec. 31, 2025
Income Tax Disclosure [Abstract]  
Income Taxes Income Taxes
The components of income tax expense (benefit) for the years ended December 31, 2025, 2024, and 2023 are as follows:

Years Ended December 31,
202520242023
(In thousands)
Current:
Federal$1,922 $967 $3,488 
State150 762 3,102 
Total current 2,072 1,729 6,590 
Deferred:
Federal9,188 (3,426)6,615 
State4,963 (2,560)(3,240)
Total deferred 14,151 (5,986)3,375 
Total income tax expense (benefit) $16,223 $(4,257)$9,965 

The Company reported deferred tax (benefit) of $(10.9) million, $(21.6) million, and $(11.5) million for the years ended December 31, 2025, 2024, and 2023, respectively, related to the net unrealized gains (losses) on securities available for sale, which is reported in accumulated other comprehensive income, net of tax. Additionally, the Company recorded a deferred tax (benefit) expense of $(26,000), $378,000, and $218,000, respectively, related to the reclassification adjustment of actuarial net (loss) gain on employee benefit obligations, which is reported in accumulated other comprehensive income, net of tax.

A reconciliation between the amount of reported total income tax expense and the amount computed by multiplying the applicable statutory federal income tax rate of 21% is as follows:
Years Ended December 31,
202520242023
(Dollars in thousands)
AmountRateAmountRateAmountRate
U.S. federal tax at statutory tax rate$14,278 21.00 %$(3,341)21.00 %$9,670 21.00 %
State and local income taxes, net of federal income tax effect (1)
4,039 5.94 (1,420)8.93 (103)(0.22)
Low-income housing tax credit, net of amortization (2)
(155)(0.23)152 (0.96)148 0.32 
Nontaxable or nondeductible items
ESOP fair market value adjustment240 0.35 323 (2.03)383 0.83 
162(m)39 0.06 505 (3.17)549 1.19 
Income from bank-owned life insurance(1,719)(2.53)(1,265)7.95 (1,865)(4.05)
Other, net (3)
(499)(0.73)789 (4.96)1,183 2.57 
Total income tax expense (benefit)$16,223 23.86 %$(4,257)26.76 %$9,965 21.64 %
(1) State income taxes in New Jersey and New York make up the majority (greater than 50%) of the tax effect in this category.
(2) Low-income housing tax credits are presented net of the related proportional amortization.
(3) The non-taxable or non-deductible items represents non-taxable interest income, non-deductible FDIC premiums, and other non-deductible expenses. None of these items individually or in the aggregate exceed the 5% quantitative threshold for separate disaggregation in the current year.
(15)    Income Taxes (continued)

The net deferred tax asset/liability is included in other assets/liabilities in the Consolidated Statements of Financial Condition. The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2025 and 2024 are as follows:
At December 31,
20252024
(In thousands)
Deferred tax assets:
Allowance for credit losses$18,650 $16,684 
Post-retirement benefits7,527 6,294 
Deferred compensation1,465 1,755 
Retirement Income Maintenance plan3,479 3,369 
ESOP1,315 1,240 
Stock-based compensation1,719 3,098 
Net unrealized losses on debt securities and defined benefit plans29,117 42,715 
Federal and State NOLs12,748 24,129 
Alternative minimum assessment carryforwards2,156 2,156 
Lease liability4,585 4,960 
Other items5,809 5,066 
Gross deferred tax assets88,570 111,466 
Valuation allowance— — 
88,570 111,466 
Deferred tax liabilities:
Pension expense80,321 75,489 
Depreciation1,931 2,448 
Deferred loan costs14,262 13,490 
Intangible assets1,586 1,590 
Lease right-of-use asset4,354 4,700 
Other items1,434 1,318 
Total gross deferred tax liabilities103,888 99,035 
Net deferred tax (liability) asset$(15,318)$12,431 

Retained earnings at both December 31, 2025 and 2024 includes approximately $21.5 million, respectively, for which no provision for income tax has been made. This amount represents an allocation of income to bad debt deductions for tax purposes only. Events that would result in taxation of these reserves include the failure to qualify as a bank for tax purposes, distributions in complete or partial liquidation, stock redemptions and excess distributions to stockholders.
(15)    Income Taxes (continued)

The following table presents income taxes paid:

Years Ended December 31,
202520242023
(In thousands)
Federal taxes $— $(44)$8,400 
State taxes :
New Jersey(115)821 436 
New York 103 119 117 
New York City12 43 300 
Other(1)
— 
Total$$940 $9,253 
(1) The amount of income taxes paid during these years does not meet the 5% disaggregation threshold.

Management believes, based on current facts, that it is more likely than not that there will be sufficient taxable income in future years to realize federal deferred tax assets. At both December 31, 2025 and 2024, the Company's had no valuation allowance recorded.

The Company had federal net operating losses of approximately $1.9 million and $42.7 million at December 31, 2025 and 2024, respectively. Net operating losses have an indefinite carryover subject to an 80% taxable income utilization and are subject to an annual limitation under Code Section 382.

The Company had New Jersey net operating loss carryforwards of $173.2 million and $236.3 million, respectively, at December 31, 2025 and 2024. If not utilized, these carryforwards will expire periodically through 2044. At both December 31, 2025 and 2024, the Company had approximately $2.2 million of New Jersey AMA Tax Credits. These credits do not expire. At December 31, 2025, and 2024 the Company also had New York net operating loss carryforwards of $556,000 and $1.5 million, respectively, which are subject to a 20 year carryforward. At both December 31, 2025, and 2024 the Company also had Florida net operating loss carryforwards of $18,000 which do not expire.
The Company files income tax returns in the United States federal jurisdiction and in the states of New Jersey and New York and various other states. At December 31, 2025, the Company is no longer subject to federal income tax examination for the years prior to 2022. Columbia Bank MHC and subsidiaries' New York State returns were audited for tax years ended December 31, 2021, 2022 and 2023, and closed with no changes during the year ended December 31, 2025. The Company's state income tax returns are subject to examination by the respective state taxing authorities with open years varying by jurisdiction but generally including 2022 and later.
v3.25.4
Financial Transactions with Off-Balance-Sheet Risk and Concentrations of Credit Risk
12 Months Ended
Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
Financial Transactions with Off-Balance-Sheet Risk and Concentrations of Credit Risk Financial Transactions with Off-Balance-Sheet Risk and Concentrations of Credit Risk
The Company is a party to financial instruments with off-balance-sheet risk in the normal course of business in order to meet the financing needs of its customers. These financial instruments consist of commitments to extend credit and involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the Consolidated Statements of Financial Condition.

At December 31, 2025 and 2024, the following commitments existed which are not reflected in the Consolidated Statements of Financial Condition:
December 31,
20252024
(In thousands)
Loan commitments:
Residential real estate$18,069 $9,790 
Multifamily real estate31,554 17,712 
Commercial real estate68,188 30,681 
Construction101,138 26,973 
Commercial business41,059 33,027 
Consumer including home equity loans and advances4,241 6,862 
Total loan commitments$264,249 $125,045 

Unused lines of credit consisting of home equity lines, and undisbursed business and construction lines totaled approximately $1.1 billion and $1.2 billion as of December 31, 2025 and 2024, respectively. Amounts drawn on unused lines of credit are predominantly assessed interest at rates that fluctuate with the base rate.

The Company uses the same credit policies and collateral requirements in making commitments and conditional obligations as it does for on-balance-sheet loans. Commitments to extend credit are agreements to lend to customers 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. Since the commitments may expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer's creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management's credit evaluation of the borrower.

The Company principally grants residential real estate loans, multifamily real estate loans, commercial real estate loans, construction loans, commercial business loans, home equity loans and advances and other consumer loans to borrowers primarily throughout New Jersey, New York and Pennsylvania, and to a much lesser extent in a few other east coast states. Its borrowers' abilities to repay their obligations are dependent upon various factors, including the borrowers' income and net worth, cash flows generated by the underlying collateral, if any, or from business operations, value of the underlying collateral and priority of the Company's lien on the property. These factors are dependent on various economic conditions and circumstances beyond the Company's control, and as a result, the Company is subject to the risk of loss. The Company believes that its lending policies and procedures adequately minimize the potential exposure to such risks and adequate provisions for loan losses are provided for all probable and estimable losses. In the normal course of business, the Company sells residential real estate loans to third parties. These loan sales are subject to customary representations and warranties. In the event that the Company is found to be in breach of these representations and warranties, it may be obligated to repurchase certain of these loans.

The Company has entered into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company's derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company's known or expected cash receipts and its known or expected cash payments principally related to the Company's borrowings. These derivatives were used to hedge the variability in cash flows associated with certain short-term funding transactions. The fair value of the derivatives as of December 31, 2025 and 2024 was a net liability of $3.0 million and $1.1 million, respectively, net of accrued interest and variation margin posted in accordance with the Chicago Mercantile Exchange.

In connection with its mortgage banking activities, at December 31, 2025 and 2024 the Company had no commitments to sell loans, and no commitments classified as held-for-sale.
(16)    Financial Transactions with Off-Balance-Sheet Risk and Concentrations of Credit Risk (continued)

The Company is also a party to standby letters of credit, which are conditional commitments issued to guarantee the performance of a customer to a third party. These guarantees generally extend for a term of up to one year and may be secured or unsecured. The balance of standby letters of credit totaled $22.9 million and $28.3 million at December 31, 2025 and 2024, respectively.

The FHLB has issued irrevocable standby letters of credits totaling $175.0 million and $350.6 million at December 31, 2025 and 2024, respectively, for purposes of collateralizing New Jersey public funds on deposit. These letters are renewable on an annual basis and are securitized by loans and securities.

The Company and its subsidiaries are also party to litigation which arises primarily in the ordinary course of business. In the opinion of management, these legal actions and claims are not expected to have a material adverse impact on the consolidated financial position of the Company.

The Company is required to include unfunded commitments that are expected to be funded in the future within the allowance calculation, other than those that are unconditionally cancellable. To arrive at that reserve, the reserve percentage for each applicable segment is applied to the unused portion of the expected commitment balance and is multiplied by the expected funding rate. To determine the expected funding rate, the Company uses a historical utilization rate for each segment. The allowance for credit losses on off-balance-sheet exposures is reported in other liabilities in the Consolidated Statements of Financial Condition. The liability represents an estimate of expected credit losses arising from off-balance-sheet exposures such as unfunded commitments. At December 31, 2025 and 2024, the balance of the allowance for credit losses on unfunded commitments, included in other liabilities, totaled $3.9 million and $3.8 million, respectively. The Company recorded a provision for (reversal of) credit losses on unfunded commitments, included in other non-interest expense in the Consolidated Statements of Income, of $125,000 and $(1.7) million for the years ended December 31, 2025 and 2024, respectively.

The following table presents the activity in the allowance for credit losses on off-balance-sheet exposures for years ended December 31, 2025 and 2024:

December 31,
20252024
(In thousands)
Allowance for Credit Losses:
Beginning balance$3,821 $5,484 
Provision for (reversal of) credit losses125 (1,663)
 Balance at end of period$3,946 $3,821 
v3.25.4
Fair Value Measurements
12 Months Ended
Dec. 31, 2025
Fair Value Disclosures [Abstract]  
Fair Value Measurements Fair Value Measurements
The Company utilizes fair value measurements to record fair value adjustments to certain assets and liabilities and to determine fair value disclosures. The determination of fair values of financial instruments often requires the use of estimates. Where quoted market values in an active market are not readily available, the Company utilizes various valuation techniques to estimate fair value.

Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. There are three levels of inputs that may be used to measure the fair values:

Level 1: Unadjusted quoted prices for identical assets or liabilities in active markets that the Company has the ability to access on the measurement date.

Level 2: Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar instruments in markets that are active or not active, or inputs that are observable or can be corroborated by observable market data for substantially the full term of the asset or liability.

Level 3: Prices or valuation techniques that require unobservable inputs that are both significant to the fair value measurement and unobservable (i.e., supported by minimal or no market activity). Valuation techniques include the use of option pricing models, discounted cash flow models and similar techniques.

A financial instrument’s level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement.

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The methods described below were used to measure fair value of financial instruments as reflected in the tables below on a recurring basis as of December 31, 2025 and 2024.

Debt Securities Available for Sale, at Fair Value

For debt securities available for sale, fair value was estimated using a market approach. The majority of these securities are fixed income instruments that are not quoted on an exchange but are traded in active markets. Prices for these instruments are obtained through third-party data service providers or dealer market participants with which the Company has historically transacted both purchases and sales of securities. Prices obtained from these sources include market quotations, matrix pricing and discounted cash flow pricing. Matrix pricing, a Level 2 input, is a mathematical technique used principally to value certain securities to a benchmark or to comparable securities. The Company evaluates the quality of Level 2 matrix pricing through comparison to similar assets with greater liquidity and evaluation of projected cash flows. Discounted cash flows, a Level 3 input, is estimated by discounting the expected future cash flows using the current rates for securities with similar credit ratings and similar remaining maturities. As the Company is responsible for the determination of fair value, it performs quarterly analysis on the prices received from the pricing service to determine whether the prices are reasonable estimates of fair value. Specifically, the Company compares the prices received from the pricing service to a secondary pricing source. Additionally, the Company compares changes in the reported market values and returns to relevant market indices to assess the reasonableness of the reported prices. The Company’s internal price verification procedures and review of fair value methodology documentation provided by independent pricing services has not historically resulted in an adjustment in the prices obtained from the pricing service. The Company may hold debt instruments issued by the U.S. government and U.S. government-sponsored agencies that are traded in active markets with readily accessible quoted market prices that are considered Level 1 inputs. The Company classifies the estimated fair value of its loan portfolio as Level 3.

Equity Securities, at Fair Value

The Company holds equity securities that are traded in active markets with readily accessible quoted market prices that are considered Level 1 inputs. A trust preferred security that is not traded in an active market and Federal Home Loan Mortgage Corporation ("FHLMC") and Federal National Mortgage Association ("FNMA") preferred stock, are considered Level 2 instruments. In addition, Level 2 instruments include Atlantic Community Bankers Bank ("ACBB") stock, which is based on redemption at par value and can only be sold to the issuing ACBB or another institution that holds ACBB stock.
(17)    Fair Value Measurements (continued)

Derivatives

The Company records all derivatives included in other assets and liabilities in the Consolidated Statements of Financial Condition at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting, and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. See note 21 for disclosures related to the accounting treatment for derivatives.

The fair value of the Company's derivatives is determined using discounted cash flow analysis using observable market-based inputs, which are considered Level 2 inputs.

The following tables present the assets and liabilities reported in the Consolidated Statements of Financial Condition at their fair values as of December 31, 2025 and 2024, by level within the fair value hierarchy:

December 31, 2025
Fair Value Measurements
Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Debt securities available for sale:
       U.S. government and agency obligations$398,470 $398,470 $— $— 
Mortgage-backed securities and collateralized mortgage obligations654,973 — 654,973 — 
       Municipal obligations1,961 — 425 1,536 
       Corporate debt securities66,613 — 56,511 10,102 
            Total debt securities available for sale1,122,017 398,470 711,909 11,638 
Equity securities6,802 6,471 331 — 
Derivative assets10,525 — 10,525 — 
$1,139,344 $404,941 722,765 $11,638 
Derivative liabilities$13,503 $— $13,503 $— 
(17)    Fair Value Measurements (continued)

December 31, 2024
Fair Value Measurements
Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Debt securities available for sale:
       U.S. government and agency obligations$314,702 $314,702 $— $— 
Mortgage-backed securities and collateralized mortgage obligations622,957 — 622,957 — 
       Municipal obligations2,359 — 426 1,933 
       Corporate debt securities85,928 — 77,360 8,568 
            Total debt securities available for sale1,025,946 314,702 700,743 10,501 
Equity securities6,673 6,350 323 — 
Derivative assets18,895 — 18,895 — 
$1,051,514 $321,052 $719,961 $10,501 
Derivative liabilities$20,025 $— $20,025 $— 
    
The table below provides activity of assets reported as Level 3 for the years ended December 31, 2025 and 2024:

Significant Unobservable Inputs (Level 3)
(In thousands)
Debt securities available for sale:
Balance of recurring Level 3 assets - January 1, 2024$9,737 
Purchase of Level 3 assets1,010 
Maturity of Level 3 asset(927)
Change in fair value of Level 3 assets681 
Balance of recurring Level 3 assets - December 31, 2024
$10,501 
Purchase of Level 3 asset1,549 
Maturity of Level 3 asset(1,944)
Change in fair value of Level 3 assets1,532 
Balance of recurring Level 3 assets - December 31, 2025
$11,638 

The fair value of investments placed in Level 3 is estimated by discounting the expected future cash flows using reasonably available current rates for comparable new issue securities with similar structure, including original maturity, call date, and assumptions about risk. Discounted cash flow estimated valuations are subsequently validated against comparable structures as an approximation of value.
(17)    Fair Value Measurements (continued)

Expected cash flows were projected based on contractual cash flows. There was one purchase of a Level 3 asset during each of the years ended December 31, 2025 and 2024, and no transfers to Level 3 assets during the years ended December 31, 2025 and 2024. At December 31, 2025, two private placement corporate debt securities classified as available for sale, and one private placement municipal obligation classified as available for sale were include in Level 3 assets. At December 31, 2024 two private placement corporate debt securities classified as available for sale, and two private placement municipal obligations classified as available for sale were include in Level 3 assets.

At December 31, 2025, private placement debt security cash flows were discounted to a market yield and weighted average of 9.25%, and the cash flows for private placement municipal obligations was discounted to a market yield and weighted average of 4.60%.

The period end valuations were supported by an analysis prepared by an independent third party market participant and approved by management.

Assets Measured at Fair Value on a Non-Recurring Basis

The valuation techniques described below were used to estimate fair value of financial instruments measured on a non-recurring basis as of December 31, 2025 and 2024.

Individually Analyzed Collateral Dependent Loans/Impaired Loans

The fair value of collateral dependent loans that are individually analyzed or were previously deemed impaired is measured based on the present value of expected future cash flows discounted at the loan's effective interest rate or, as a practical expedient, at the loan's observable market price or the fair value of the collateral if the loan is collateral dependent. For individually analyzed loans measured for impairment based on the fair value of the underlying collateral, fair value was estimated using a market approach. The Company measures the fair value of collateral underlying impaired loans primarily through obtaining independent appraisals that rely upon quoted market prices for similar assets in active markets. These appraisals include adjustments, on an individual case-by-case basis, to comparable assets based on the appraisers’ market knowledge and experience, as well as adjustments for estimated costs to sell between 6% and 8%. For non-collateral dependent loans, management estimates fair value using discounted cash flows based on inputs that are largely unobservable. The Company classifies these loans as Level 3 within the fair value hierarchy.

Other Real Estate Owned
    
    Other real estate owned is initially recorded at the lower of the recorded investment in the loan at the time of foreclosure or at fair value, less estimated costs to sell, when acquired. Fair value is generally based on an independent appraisal which includes adjustments to comparable assets based on the appraisers' market knowledge and experience. Subsequent write-downs in the value of other real estate owned is recorded though expense as incurred. Other real estate owned is considered Level 3 within the fair value hierarchy.

Mortgage Servicing Rights, Net ("MSR"s")

Mortgage servicing rights are carried at the lower of cost or estimated fair value. The estimated fair value of MSRs is obtained through an analysis of future cash flows, incorporating assumptions that market participants would use in determining fair value including market discount rates, prepayments speeds, servicing income, servicing costs, default rates and other market driven data, including the market's perception of future interest rate movements. The prepayment speed and the discount rate are considered two of the most significant inputs in the model. A significant degree of judgment is involved in valuing the mortgage servicing rights using Level 3 inputs. The use of different assumptions could have a significant effect on this fair value estimate.
    
The following tables present the assets and liabilities reported in the Consolidated Statements of Financial Condition at their fair values on a non-recurring basis at December 31, 2025 and 2024, by level within the fair value hierarchy:
(17)    Fair Value Measurements (continued)

December 31, 2025
Fair Value Measurements
Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Impaired loans$14,799 $— $— $14,799 
Mortgage servicing rights2,384 — — 2,384 
$17,183 $— $— $17,183 


December 31, 2024
Fair Value Measurements
Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Impaired loans$3,199 $— $— $3,199 
Real estate owned1,334 — — 1,334 
Mortgage servicing rights2,443 — — 2,443 
$6,976 $— $— $6,976 
    
The following table presents information for Level 3 assets measured at fair value on a non-recurring basis at December 31, 2025 and 2024:
December 31, 2025
Fair ValueValuation MethodologyUnobservable InputsRange of InputsWeighted Average
(Dollars in thousands)
Impaired loans$14,799 Appraisal / Other
Discount for cost to sell (2)
6.0% (3)
6.0% (3)
Mortgage servicing rights$2,384 Discounted cash flow
Prepayment speeds and discount rates (4)
5.3% - 28.5%
13.0 %
(17)    Fair Value Measurements (continued)

December 31, 2024
Fair ValueValuation MethodologyUnobservable InputsRange of InputsWeighted Average
(Dollars in thousands)
Impaired loans$3,199 OtherA/R aging schedule— %— %
Other real estate owned$1,334 
Contract sales price(1)
Discount for costs to sell (2)
8.0%8.0 %
Mortgage servicing rights$2,443 Discounted cash flow
Prepayment speeds and discount rates (5)
4.5% - 34.3%
11.7 %
(1) Value based on sales contract.
(2) Value based on management's estimate of selling costs including real estate brokerage commissions, title transfer and other fees. Other includes accounts receivable aging or other collateral value.
(3) For real estate secured loans.
(4) Value of SBA servicing rights based on a discount rate of 13.75%.
(5) Value of SBA servicing rights based on a discount rate of 14.50%.

Other Fair Value Disclosures

The Company is required to disclose estimated fair value of financial instruments, both assets and liabilities on and off the balance sheet, for which it is practicable to estimate fair value. A description of the valuation methodologies used for those assets and liabilities not recorded at fair value on a recurring or non-recurring basis are set forth below.

Cash and Cash Equivalents

For cash and due from banks, federal funds sold and short-term investments, the carrying amount approximates fair value due to their nature and short-term maturities.

Debt Securities Held to Maturity

For debt securities held to maturity, fair value was estimated using a market approach. The majority of the Company’s securities are fixed income instruments that are not quoted on an exchange but are traded in active markets. Prices for these instruments are obtained through third-party data service providers or dealer market participants with which the Company has historically transacted both purchases and sales of securities. Prices obtained from these sources include market quotations and matrix pricing. Matrix pricing, a Level 2 input, is a mathematical technique used principally to value certain securities to benchmark or to compare securities. The Company evaluates the quality of Level 2 matrix pricing through comparison to similar assets with greater liquidity and evaluation of projected cash flows. As the Company is responsible for the determination of fair value, it performs quarterly analysis on the prices received from the pricing service to determine whether the prices are reasonable estimates of fair value. Specifically, the Company compares the prices received from the pricing service to a secondary pricing source. Additionally, the Company compares changes in the reported market values and returns to relevant market indices to assess the reasonableness of the reported prices. The Company’s internal price verification procedures and review of fair value methodology documentation provided by independent pricing services has not historically resulted in an adjustment in the prices obtained from the pricing service. The Company also holds debt instruments issued by the U.S. government and U.S. government sponsored agencies that are traded in active markets with readily accessible quoted market prices that are considered Level 1 inputs within the fair value hierarchy.
(17)    Fair Value Measurements (continued)

Federal Home Loan Bank Stock ("FHLB")

The fair value of FHLB stock is based on redemption at par value and can only be sold to the issuing FHLB, to other FHLBs, or to other member banks. As such, the Company's FHLB stock is recorded at cost, or par value, and is evaluated for impairment each reporting period by considering the ultimate recoverability of the investment rather than temporary declines in value. The Company classifies the estimated fair value as Level 2 within the fair value hierarchy.

Loans Receivable

Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial mortgage, residential mortgage, commercial, construction, consumer, and other. Each loan category is further segmented into fixed and adjustable rate interest terms and into performing and non-performing categories.

The fair value of performing loans was estimated using a combination of techniques, including a discounted cash flow model that utilizes a discount rate that reflects the Company's current pricing for loans with similar characteristics and remaining maturity, adjusted by an amount for estimated credit losses inherent in the portfolio at the balance sheet date. The rates take into account the expected yield curve, as well as an adjustment for prepayment risk, when applicable. The Company classifies the estimated fair value of its loan portfolio as Level 3.

The fair value for significant non-performing loans was based on recent external appraisals of collateral securing such loans, adjusted for the timing of anticipated cash flows. The Company classifies the estimated fair value of its non-performing loan portfolio as Level 3.

Deposits

The fair value of deposits with no stated maturity, such as demand, money market, and savings and club deposits are payable on demand at each reporting date and classified as Level 2. The estimated fair value of certificates of deposit was based on the discounted value of contractual cash flows. The discount rate was estimated using the Company’s current rates offered for deposits with similar remaining maturities. The Company classifies the estimated fair value of its certificates of deposit portfolio as Level 2.

Borrowings

The fair value of borrowings was estimated by discounting future cash flows using rates available for debt with similar terms and maturities and is classified by the Company as Level 2 within the fair value hierarchy.

Commitments to Extend Credit and Letters of Credit

The fair value of commitments to extend credit and letters of credit was estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counter-parties. For fixed rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value estimates of commitments to extend credit and letters of credit are deemed immaterial.

The following tables present the assets and liabilities reported in the Consolidated Statements of Financial Condition at their fair values as of December 31, 2025 and 2024:
(17)    Fair Value Measurements (continued)

December 31, 2025
Fair Value Measurements
Carrying ValueTotal Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Financial assets:
Cash and cash equivalents$340,806 $340,806 $340,806 $— $— 
Debt securities available for sale1,122,017 1,122,017 398,470 711,909 11,638 
Debt securities held to maturity396,233 367,289 — 367,289 — 
Equity securities6,802 6,802 6,471 331 
Federal Home Loan Bank stock64,604 64,604 — 64,604 — 
Loans receivable, net8,224,809 8,015,243 — — 8,015,243 
Derivative assets10,525 10,525 — 10,525 — 
Financial liabilities:
Deposits$8,444,079 $8,444,260 $— $8,444,260 $— 
Borrowings1,183,472 1,192,416 — 1,192,416 — 
Derivative liabilities13,503 13,503 — 13,503 — 

December 31, 2024
Fair Value Measurements
Carrying ValueTotal Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Financial assets:
Cash and cash equivalents$289,223 $289,223 $289,223 $— $— 
Debt securities available for sale1,025,946 1,025,946 314,702 700,743 10,501 
Debt securities held to maturity392,840 350,153 — 350,153 — 
Equity securities6,673 6,673 6,350 323 — 
Federal Home Loan Bank stock60,387 60,387 — 60,387 — 
Loans receivable, net7,856,970 7,393,058 — — 7,393,058 
Derivative assets18,895 18,895 — 18,895 — 
Financial liabilities:
Deposits$8,096,149 $8,088,842 $— $8,088,842 $— 
Borrowings1,080,600 1,077,466 — 1,077,466 — 
Derivative liabilities20,025 20,025 — 20,025 — 
(17)    Fair Value Measurements (continued)

Limitations

Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Because limited markets exist for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates.
Fair value estimates are based on existing on and off-balance-sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Other significant assets and liabilities that are not considered financial assets or liabilities include goodwill and intangible assets, deferred tax assets and liabilities, office properties and equipment, and bank-owned life insurance.
v3.25.4
Earnings per Share
12 Months Ended
Dec. 31, 2025
Earnings Per Share [Abstract]  
Earnings per Share Earnings per Share
Basic earnings per share ("EPS") is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. For purposes of calculating basic EPS, weighted average common shares outstanding excludes treasury stock, unallocated employee stock ownership plan shares that have not been committed for release and deferred compensation obligations required to be settled in shares of Company stock.

Diluted EPS is computed using the same method as basic EPS and reflects the potential dilution which could occur if stock options and unvested shares were exercised and converted into common stock. The potentially diluted shares would then be included in the weighted average number of shares outstanding for the period using the treasury stock method.

The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share calculations for the years ended December 31, 2025, 2024, and 2023:
December 31,
202520242023
(In thousands, except per share data)
Net income (loss)$51,766 $(11,653)$36,086 
Shares:
Weighted average shares outstanding - basic101,810,752 101,676,758 102,656,388 
Weighted average diluted shares outstanding— 162,749 238,581 
Weighted average shares outstanding - diluted101,810,752 101,839,507 102,894,969 
Earnings (loss) per share:
Basic$0.51 $(0.11)$0.35 
Diluted$0.51 $(0.11)$0.35 

During the years ended December 31, 2025, 2024, and 2023, the average number of stock options which could potentially dilute basic earnings per share in the future that were not included in the computation of diluted earnings per share because to do so would have been anti-dilutive totaled 4,044,460, 988,161, and 704,526 respectively.
v3.25.4
Parent-only Financial Information
12 Months Ended
Dec. 31, 2025
Condensed Financial Information Disclosure [Abstract]  
Parent-only Financial Information Parent-only Financial Information
The condensed financial statements of Columbia Financial, Inc. (parent company) are presented below:
Statements of Financial Condition
December 31,
20252024
(In thousands)
Assets
Cash and due from banks$31,494 $6,459 
Short-term investments111 110 
Total cash and cash equivalents31,605 6,569 
Equity securities, at fair value201 193 
Investment in subsidiaries1,102,653 1,045,203 
Loan receivable from Columbia Bank32,674 34,599 
Other assets3,411 3,106 
Total assets$1,170,544 $1,089,670 
                                                  Liabilities and Stockholders' Equity
Liabilities:
Borrowings$7,057 $7,036 
Accrued expenses and other liabilities2,759 2,471 
Total liabilities9,816 9,507 
Stockholders' equity1,160,728 1,080,163 
Total liabilities and stockholders' equity$1,170,544 $1,089,670 
(19)    Parent-only Financial Information (continued)

Statements of Income and Comprehensive Income
Years Ended December 31,
202520242023
(In thousands)
Dividends from subsidiary$35,000 $— $45,000 
Interest income:
Loans receivable1,643 1,735 1,814 
Debt securities available for sale and equity securities16 20 18 
Interest-earning deposits
Total interest income36,661 1,756 46,840 
Interest expense on borrowings408 474 1,339 
Net interest income 36,253 1,282 45,501 
Equity earnings income (loss) in subsidiaries16,605 (10,677)(8,432)
Non-interest income:
Change in fair value of equity securities(10)
Other non-interest income— — 
Total non-interest income (10)
Non-interest expense:
Merger-related expenses214 755 41 
Loss on extinguishment of debt— — 300 
Other non-interest expense1,598 1,618 1,502 
Total non-interest expense1,812 2,373 1,843 
Income (loss) before income tax (benefit)51,055 (11,766)35,216 
Income tax (benefit)(711)(113)(870)
Net income (loss)51,766 (11,653)36,086 
Other comprehensive income34,396 48,367 20,561 
Comprehensive income $86,162 $36,714 $56,647 
(19)    Parent-only Financial Information (continued)

Statements of Cash Flows
Years Ended December 31,
202520242023
(In thousands)
Cash flows from operating activities:
Net income (loss)$51,766 $(11,653)$36,086 
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Amortization of intangible assets21 74 74 
Change in fair value of equity securities(8)(2)10 
Loss on extinguishment of debt— — 300 
Deferred tax expense (425)2,856 2,019 
(Increase) decrease in other assets202 (2,653)8,894 
(Decrease) in accrued expenses and other liabilities(180)(658)(890)
Equity in undistributed (earnings) loss of subsidiaries(16,605)10,677 8,432 
Net cash provided by (used in) operating activities$34,771 $(1,359)$54,925 
Cash flows from investing activities:
Repayment of loan receivable from Columbia Bank1,925 1,833 1,755 
Net cash provided by investing activities$1,925 $1,833 $1,755 
Cash flows from financing activities:
Repayment of term note $— $— $(30,300)
Purchase of treasury stock(13,351)(5,894)(80,497)
Exercise of options— — 42 
Issuance of common stock allocated to restricted stock award grants3,355 4,153 4,066 
Restricted stock forfeitures(1,224)(99)(501)
Repurchase of shares for taxes(441)(817)(623)
Net cash (used in) financing activities$(11,661)$(2,657)$(107,813)
Net increase (decrease) in cash and cash equivalents$25,035 $(2,183)$(51,133)
Cash and cash equivalents at beginning of year6,569 8,752 59,885 
Cash and cash equivalents at end of period$31,604 $6,569 $8,752 
Non-cash investing and financing activities:
Excise tax on net stock repurchases$137 $42 $800 
v3.25.4
Other Comprehensive Income (Loss)
12 Months Ended
Dec. 31, 2025
Equity [Abstract]  
Other Comprehensive Income (Loss) Other Comprehensive Income (Loss)
The following tables present the components of other comprehensive income (loss), both gross and net of tax, for the years ended December 31, 2025, 2024, and 2023:
For the Years Ended December 31,
20252024
Before TaxTax EffectAfter TaxBefore TaxTax EffectAfter Tax
(In thousands)
Components of other comprehensive income:
Unrealized gain on debt securities available for sale:$37,429 $(10,925)$26,504 $77,585 $(21,591)$55,994 
Accretion of unrealized gain on debt securities reclassified as held to maturity(3)(1)
Reclassification adjustment for gain (loss) included in net income290 (81)209 (35,851)9,980 (25,871)
37,724 (11,009)26,715 41,738 (11,612)30,126 
Derivatives:
Unrealized (loss) gain on swap contracts accounted for as cash flow hedges(4,537)1,264 (3,273)2,467 (688)1,779 
Employee benefit plans:
Amortization of prior service cost included in net income(141)39 (102)(98)27 (71)
Reclassification adjustment of actuarial net gain (loss) included in net income92 (26)66 (1,341)378 (963)
Change in funded status of retirement obligations15,451 (4,461)10,990 24,248 (6,752)17,496 
15,402 (4,448)10,954 22,809 (6,347)16,462 
Total other comprehensive income$48,589 $(14,193)$34,396 $67,014 $(18,647)$48,367 

    
(20)    Other Comprehensive Income (Loss) (continued)

For the Year Ended December 31,
2023
Before TaxTax EffectAfter Tax
(In thousands)
Components of other comprehensive income:
Unrealized gain on debt securities available for sale:$41,181 $(11,544)$29,637 
Accretion of unrealized (loss) on debt securities reclassified as held to maturity(14)(10)
Reclassification adjustment for (loss) included in net income(10,847)3,053 (7,794)
30,320 (8,487)21,833 
Derivatives:
Unrealized (loss)on swap contracts accounted for as cash flow hedges(1,274)356 (918)
Employee benefit plans:
Amortization of prior service cost included in net income(56)16 (40)
Reclassification adjustment of actuarial net (loss) included in net income(776)218 (558)
Change in funded status of retirement obligations340 (96)244 
(492)138 (354)
Total other comprehensive income $28,554 $(7,993)$20,561 

    
(20)    Other Comprehensive Income (Loss) (continued)

    The following tables present the changes in the components of accumulated other comprehensive income (loss), net of tax, for the years ended December 31, 2025, 2024, and 2023:
For the Years Ended December 31,
20252024
Unrealized (Losses) on Debt Securities Available for SaleUnrealized Gains (Losses) on SwapsEmployee Benefit PlansAccumulated Other Comprehensive (Loss)Unrealized (Losses) on Debt Securities Available for SaleUnrealized Gains (Losses) on SwapsEmployee Benefit PlansAccumulated Other Comprehensive (Loss)
(In thousands)
Balance at beginning of period$(83,523)$1,365 $(28,210)$(110,368)$(113,649)$(414)$(44,672)$(158,735)
Current period changes in other comprehensive income (loss)26,715 (3,273)10,954 34,396 30,126 1,779 16,462 48,367 
Total other comprehensive income (loss) $(56,808)$(1,908)$(17,256)$(75,972)$(83,523)$1,365 $(28,210)$(110,368)

For the Year Ended December 31,
2023
Unrealized Gains (Losses) on Debt Securities Available for SaleUnrealizedGains (Losses) on SwapsEmployee Benefit PlansAccumulated Other Comprehensive (Loss)
(In thousands)
Balance at beginning of period$(135,482)$504 $(44,318)$(179,296)
Current period changes in other comprehensive income (loss)21,833 (918)(354)20,561 
Total other comprehensive income (loss)$(113,649)$(414)$(44,672)$(158,735)
(20)    Other Comprehensive Income (Loss) (continued)

    The following tables reflect amounts reclassified from accumulated other comprehensive income (loss) in the Consolidated Statements of Income and the affected line item in the statement where net income is presented for the years ended December 31, 2025, 2024, and 2023:
Accumulated Other Comprehensive Income (Loss) Components
For the Years Ended December 31,Affected Line Items in the Consolidated Statements of Income
202520242023
(In thousands)
Reclassification adjustment for gain (loss) included in net income$290 $(35,851)$(10,847)Gain (loss) on securities transactions
Reclassification adjustment of actuarial net gain (loss) included in net income92 (1,341)(776)Other non-interest expense
      Total before tax 382 (37,192)(11,623)
      Income tax (expense) benefit(107)10,358 3,271 
      Net of tax$275 $(26,834)$(8,352)
v3.25.4
Derivatives and Hedging Activities
12 Months Ended
Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Derivatives and Hedging Activities Derivatives and Hedging Activities
The Company uses derivative financial instruments as components of its market risk management, principally to manage interest rate risk. Certain derivatives are entered into in connection with transactions with commercial customers. Derivatives are not used for speculative purposes. All derivatives are recognized as either assets or liabilities in the Consolidated Statements of Financial Condition, reported at fair value and presented on a gross basis. Until a derivative is settled, a favorable change in fair value results in an unrealized gain that is recognized as an asset, while an unfavorable change in fair value results in an unrealized loss that is recognized as a liability.

The Company generally applies hedge accounting to its derivatives used for market risk management purposes. Hedge accounting is permitted only if specific criteria are met, including a requirement that a highly effective relationship exists between the derivative instrument and the hedged item, both at inception of the hedge and on an ongoing basis. Changes in the fair value of effective fair value hedges are recognized in current earnings (with the change in fair value of the hedged asset or liability also recognized in earnings). Changes in the fair value of effective cash flow hedges are recognized in other comprehensive income (loss) until earnings are affected by the variability in cash flows of the designated hedged item. Ineffective portions of hedge results are recognized in current earnings. Changes in the fair value of derivatives for which hedge accounting is not applied are recognized in current earnings.

The Company formally documents at inception all relationships between the derivative instruments and the hedged items, as well as its risk management objectives and strategies for undertaking the hedge transactions. This process includes linking all derivatives that are designated as hedges to specific assets and liabilities, or to specific firm commitments. The Company also formally assesses, both at inception of the hedge and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in the fair values or cash flows of the hedged items. If it is determined that a derivative is not highly effective or has ceased to be a highly effective hedge, the Company would discontinue hedge accounting prospectively. Gains or losses resulting from the termination of a derivative accounted for as a cash flow hedge remain in other comprehensive income (loss) and is (accreted) amortized to earnings over the remaining period of the former hedging relationship.

Certain derivative financial instruments are offered to certain commercial banking customers to manage their risk of exposure and risk management strategies. These derivative instruments consist primarily of currency forward contracts and interest rate swap contracts. The risks associated with these transactions is mitigated by simultaneously entering into similar transactions having essentially offsetting terms with a third party. In addition, the Company executes interest rate swaps with third parties in order to hedge the interest rate risk of short-term FHLB advances.

Interest Rate Swaps. At December 31, 2025 and December 31, 2024, the Company had 92 and 84 interest rate swaps in place with commercial banking customers executed by offsetting interest rate swaps with third parties, with aggregated notional amounts of $387.2 million and $298.8 million, respectively. These derivatives are not designated as hedges and are not speculative. These interest rate swaps do not meet hedge accounting requirements.

At December 31, 2025 and 2024, the Company had 33 and 31 interest rate swaps with notional amounts of $393.7 million and $378.7 million, respectively, hedging certain FHLB advances. These interest rate swaps meet the cash flow hedge accounting requirements. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counter-party in exchange for the Company making fixed-rate payments over the life of the agreements without the exchanges of the underlying notional amount.

At December 31, 2025 the Company did not any interest rate fair value swaps. At December 31, 2024 the Company had ten interest rate fair value swaps with notional amounts totaling $850.0 million. The Company is exposed to changes in the fair value of certain of its fixed-rate pools of assets due to changes in benchmark interest rates. The Company uses interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in the designated benchmark interest rate, SOFR.

Interest rate swaps designated as fair value hedges involve the payment of fixed-rate amounts to a counterparty in exchange for the Company receiving variable-rate payments over the life of the agreements without the exchange of the underlying notional amount.

For the year ended December 31, 2025, there was no hedge ineffectiveness associated with these contracts. For the years ended December 31, 2024 and 2023, the Company recorded hedge ineffectiveness associated with these contracts totaling approximately $31,000, and $47,000, respectively.
(21)    Derivatives and Hedging Activities (continued)

The tables below present the fair value of the Company’s derivative financial instruments as well as their classification in the Consolidated Statements of Financial Condition at December 31, 2025 and 2024:
December 31, 2025
Asset DerivativeLiability Derivative
Consolidated Statements of Financial ConditionFair ValueConsolidated Statements of Financial ConditionFair Value
(In thousands)
Derivatives:
Interest rate products - designated hedgesOther Assets$276 Other Liabilities$3,213 
Interest rate products - non-designated hedgesOther Assets10,249 Other Liabilities10,290 
Total derivative instruments$10,525 $13,503 
December 31, 2024
Asset DerivativeLiability Derivative
Consolidated Statements of Financial ConditionFair ValueConsolidated Statements of Financial ConditionFair Value
(In thousands)
Derivatives:
Interest rate products - designated hedgesOther Assets$3,619 Other Liabilities$4,847 
Interest rate products - non-designated hedgesOther Assets15,276 Other Liabilities15,178 
Total derivative instruments$18,895 $20,025 

For the years ended December 31, 2025, 2024, and 2023, net (losses) gains of $(139,000), $89,000, and $(302,000), respectively, were recorded for changes in fair value of interest rate swaps with third parties.

At December 31, 2025 and 2024, accrued interest was $13,000 and $639,000. respectively.

The Company has agreements with counterparties that contain a provision that if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default of its derivative obligations.

At December 31, 2025, the termination value of derivatives in a net liability position, which includes accrued interest, was $3.0 million. The Company has collateral posting thresholds with certain of its derivative counterparties, and as of December 31, 2025 has required posted collateral of $2.1 million against its obligations under these agreements.
(21)    Derivatives and Hedging Activities (continued)

Fair Value Hedges of Interest Rate Risk. The Company is exposed to changes in the fair value of certain of its fixed-rate pools of assets due to changes in benchmark interest rates. The Company uses interest rate swaps to manage its exposure to changes in fair value on these instruments attributable to changes in the designated benchmark interest rate, SOFR. Interest rate swaps designated as fair value hedges involve the payment of fixed-rate amounts to a counterparty in exchange for the Company receiving variable-rate payments over the life of the agreements without the exchange of the underlying notional amount.

For derivatives designated and that qualify as fair value hedges, the gain or loss on the derivative as well as the offsetting gain or loss on the hedged item attributable to the hedged risk are recognized in interest income.

At December 31, 2024 the following amounts were recorded on the Consolidated Statements of Financial Condition related to cumulative basis adjustment for fair value hedges:
v3.25.4
Segment Reporting
12 Months Ended
Dec. 31, 2025
Segment Reporting [Abstract]  
Segment Reporting Segment Reporting
The Company's reportable segment is determined by the President, Chief Executive Officer ("CEO"), who is designated the chief operating decision maker ("CODM"), based upon information provided about the Company's products and services offered, which primarily consists of banking products. The segment is also distinguished by the level of information provided by the CODM, who uses such information to review the performance of various components of the business, which are then aggregated if operating performance, products and services, and customers are similar. The CODM evaluates the financial performance of the Company's business components including revenue streams, significant expenses and budget to actual results in assessing the Company's segments, 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 utilizes consolidated net income to benchmark the Company against its competitors. The benchmarking analysis coupled with the monitoring of budget to actual results are used in assessing performance and in establishing compensation. Loans, investments, and deposits provide the revenue in banking operations. Interest expense, provision for credit losses, and payroll provide the significant expenses in banking operations. All operations are domestic.
Accounting policies for segments are the same as those described in Note 2. Our segment assets represent our total assets as presented on the Consolidated Statements of Financial Position. Our segment revenues and expenses are presented on the Consolidated Statements of Income (Loss).
v3.25.4
Revenue Recognition
12 Months Ended
Dec. 31, 2025
Revenue from Contract with Customer [Abstract]  
Revenue Recognition Revenue Recognition
The Company's revenue includes net interest income on financial instruments and non-interest income. Most of the Company's revenue is not within the scope of Accounting Standards Codification ASC Topic 606 which does not apply to revenue associated with financial instruments, including interest income on loans and securities, which comprise the majority of the Company's revenue. Revenue-generating activities that are within the scope of this guidance are components of non-interest income. These revenue streams can generally be classified as demand deposit account fees, title insurance fees, insurance agency income and other fees.
The following table presents non-interest income, segregated by revenue streams in-scope and out-of-scope of ASC Topic 606, for the years ended December 31, 2025, 2024, and 2023.
For the Years Ended December 31,
202520242023
(In thousands)
Non-interest income
In-scope of Topic 606:
Demand deposit account fees$8,054 $6,507 $5,145 
Title insurance fees3,034 2,505 2,400 
Insurance agency income580 269 188 
Other non-interest income6,409 5,962 7,991 
Total in-scope non-interest income18,077 15,243 15,724 
Total out-of-scope non-interest income18,992 (13,349)11,655 
Total non-interest income$37,069 $1,894 $27,379 

Demand deposit account fees include monthly maintenance fees and service charges. These fees are generally derived as a result of either transaction-based or serviced-based services. The Company's performance obligation for these services is generally satisfied, and revenue recognized, at the time the transaction is completed, or the service rendered. Fees for these services are generally received from the customer either at the time of the transaction or monthly.

Title insurance fees are generally recognized at the time the transaction closes or when the service is rendered.

Columbia Insurance Services Inc. performs the function of an insurance intermediary, by introducing the policyholder and insurer for life and health, and property and casualty insurance, and is compensated by a commission fee for placement of an insurance policy. Commission and fees are generally recognized as of the effective date of the insurance policy. Commission revenues related to installment billings are recognized on the invoice date. Subsequent commission adjustments are recognized upon the receipt of notification from insurance companies concerning matters necessitating such adjustments.

Other non-interest income includes check printing fees, gift card fees, branch service fees, overdraft fees, account analysis fees, other deposit related fees, wealth management related fee income which includes annuity fees, brokerage commissions, and asset management fees. Wealth management related fee income represents fees earned from customers as consideration for asset management and investment advisory services provided by a third party. The Company's performance obligation is generally satisfied monthly, and the resulting fees are recognized monthly based upon the month-end market value of the assets under management and the applicable fee rate. The Company does not earn performance-based incentives. The Company's performance obligation for these transaction-based services are generally satisfied, and related revenue recognized, at the time the transaction closes or when the service is rendered or a point in time when the service is completed.

Also included in other fees are debit card and ATM fees which are transaction-based. Debit card revenue is primarily comprised of interchange fees earned when a customer's Company card is processed through a card payment network. ATM fees are largely generated when a Company cardholder uses a non-Company ATM, or a non-Company cardholder uses a Company ATM. The Company's performance obligation for these services is satisfied when the service is rendered. Payment is generally received at time of transaction or monthly.

Out-of-scope non-interest income primarily consists of income from bank-owned life insurance, loan prepayment and servicing fees, net fees on loan level swaps, gains and losses on the sale of loans and securities, credit card interchange income, changes in the fair value of equity securities. None of these revenue streams are subject to the requirements of ASC Topic 606.
v3.25.4
Subsequent Events
12 Months Ended
Dec. 31, 2025
Subsequent Events [Abstract]  
Subsequent Events Subsequent Events
The Company has evaluated events subsequent to December 31, 2025 and through the financial statement issuance date of March 6, 2026 and concluded that no material events occurred that would require disclosure except as noted below.

On January 31, 2026, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Columbia Financial, Inc., a newly-formed Maryland corporation (the “Holding Company”), the MHC and Northfield Bancorp, Inc., a Delaware corporation (“Northfield”). The Merger Agreement was unanimously approved by the Board of Directors of each of the parties.

Concurrently with the adoption of the Merger Agreement, the Boards of Directors of the Company, the Holding Company, the MHC and Columbia Bank adopted a Plan of Conversion and Reorganization (the “Plan of Conversion”), pursuant to which Columbia Bank will convert from the mutual holding company form of organization to the fully-public stock holding company form of organization (the “Conversion”).

Plan of Conversion and Reorganization

The Plan of Conversion provides for the sale of shares of common stock of the Holding Company, par value $0.01 per share (the “Holding Company Common Stock”), to depositors (and certain eligible borrowers) of Columbia Bank and other members of the public, and for the exchange of shares of the Company, par value $0.01 per share (the “Company Common Stock”), held by persons other than the MHC for shares of Holding Company Common Stock, based on the appraised pro forma market value of the Holding Company, after giving effect to the merger with Northfield, as determined by an independent appraiser (such appraisal, the “Independent Valuation”). Upon the completion of the Conversion, the Holding Company will succeed to the rights and obligations of the MHC and the Company, both of which will be merged out of existence in connection with the Conversion, and become the parent holding company for Columbia Bank.

The Plan of Conversion establishes December 31, 2024 as the eligibility record date for determining the eligible account holders of Columbia Bank entitled to receive first priority non-transferable subscription rights to subscribe for shares of Holding Company Common Stock in a subscription offering to be undertaken in connection with the Conversion. The Plan of Conversion is subject to regulatory approval as well as approval by the members of the MHC (i.e., the depositors of Columbia Bank) and by the stockholders of the Company (including approval by the holders of a majority of the outstanding shares of the Company common stock owned by persons other than the MHC). The MHC currently owns approximately 73.1% of the outstanding shares of Company Common Stock.

Agreement and Plan of Merger

Pursuant to the terms of the Merger Agreement and subject to the conditions set forth therein, immediately following the completion of the Conversion, Northfield will merge with and into the Holding Company (the “Merger”), with the Holding Company continuing as the surviving corporation. Immediately following the completion of the Merger, the Holding Company will cause Northfield’s wholly-owned banking subsidiary, Northfield Bank, to merge with and into Columbia Bank, with Columbia Bank continuing as the surviving institution (the “Bank Merger”).

Upon the terms and subject to the conditions set forth in the Merger Agreement, at the effective time of the Merger (the “Effective Time”), each share of Northfield’s common stock, par value $0.01 per share (the “Northfield Common Stock”), issued and outstanding immediately prior to the Effective Time, other than certain shares held by the Company, the Holding Company, the MHC or Northfield, will be converted, at the election of the holder, into the right to receive either shares of Holding Company Common Stock (the “Stock Consideration”) or cash (the “Cash Consideration,” and together with the Stock Consideration, the “Merger Consideration”), as follows: (i) if the final Independent Valuation, immediately prior to the completion of the Conversion (the “Final Independent Appraisal”) is less than $2.3 billion, 1.425 shares of Holding Company Common Stock (the “Merger Exchange Ratio”) or $14.25 in cash (the “Per Share Cash Consideration”); (ii) if the Final Independent Valuation is equal to or greater than $2.3 billion and less than $2.6 billion, the Merger Exchange Ratio will be increased to 1.450 shares of Holding Company Common Stock and the Per Share Cash Consideration will be increased to $14.50; or (iii) if the Final Independent Valuation is greater than $2.6 billion, the Merger Exchange Ratio will be increased to 1.465 shares of Holding Company Common Stock and the Per Share Cash Consideration will be increased to $14.65. No more than 30% of the shares of Northfield Common Stock issued and outstanding as of the Effective Time (excluding shares of Northfield Common Stock to be canceled as provided the Merger Agreement) will be converted into the aggregate Cash Consideration.

The completion of the Merger is subject to certain closing conditions including, among other things, (i) approval of the Merger Agreement by the Company’s and Northfield’s stockholders, (ii) the receipt all governmental consents and regulatory approvals required for the Merger and the Bank Merger, including from the Board of Governors of the Federal Reserve System and the Office of the Comptroller of the Currency and (iii) the consummation of the Conversion. Each party’s obligation to complete the Merger is also subject to certain additional customary conditions, including (i) subject to certain exceptions, the accuracy of the representations and warranties of the other party, (ii) performance in all material respects by the other party of its obligations under the
(24)    Subsequent Events (continued)

Merger Agreement and (iii) receipt by such party of an opinion from counsel to the effect that the Merger, will qualify as a “reorganization” within the meaning of Section 368(a) of the Internal Revenue Code of 1986, as amended.
v3.25.4
Insider Trading Arrangements
3 Months Ended
Dec. 31, 2025
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
v3.25.4
Insider Trading Policies and Procedures
12 Months Ended
Dec. 31, 2025
Insider Trading Policies and Procedures [Line Items]  
Insider Trading Policies and Procedures Adopted true
v3.25.4
Cybersecurity Risk Management and Strategy Disclosure
12 Months Ended
Dec. 31, 2025
Cybersecurity Risk Management, Strategy, and Governance [Line Items]  
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]
The Company’s information security program is managed through an effective enterprise-wide cybersecurity strategy, policies, standards, architecture, and processes. The Company is committed to compliance with the International Organization for Standardization's recognized cyber incident and cyber risk management frameworks.

The Company recognizes the increasing threats posed by cyber incidents and is dedicated to implementing robust cybersecurity practices. We have a comprehensive cybersecurity program designed to protect sensitive information, ensure the integrity of financial records and transactions, and maintain the confidentiality of our customers' data.

We have established procedures for timely reporting of significant cybersecurity incidents; our commitment involves promptly notifying regulatory authorities, customers, and other stakeholders in the event of any material cyber incidents that may impact our operations or the security of sensitive information. In particular, we have enhanced disclosure controls and procedures to meet the requirement to report material cybersecurity incidents on Form 8-K within four business days after we determine that an incident is material.

Additionally, we maintain a proactive cyber risk management framework to identify, assess, and mitigate potential risks. Our cybersecurity policies and practices are regularly reviewed and updated to address emerging threats. We work closely with industry experts and third-party vendors and leverage advanced technologies to enhance our effort to continually provide adequate cyber defenses.
The Company uses a multiple lines of defense management approach to managing cybersecurity. The Company's cybersecurity function is headed by the Senior Vice President Chief Information Security Officer ("CISO") who is responsible for managing information, cyber security as well all technology risks by developing and implementing information and cyber security programs, policies, strategies, architecture, standards, and procedures and acts as the first line of defense. The CISO leads a team of security professionals in safeguarding the Company's critical data, systems, and assets against threats, breaches, and attacks. The CISO is responsible for ensuring the confidentiality, integrity, and availability of information assets.
Cybersecurity Risk Management Processes Integrated [Flag] true
Cybersecurity Risk Management Processes Integrated [Text Block]
The Company’s information security program is managed through an effective enterprise-wide cybersecurity strategy, policies, standards, architecture, and processes. The Company is committed to compliance with the International Organization for Standardization's recognized cyber incident and cyber risk management frameworks.

The Company recognizes the increasing threats posed by cyber incidents and is dedicated to implementing robust cybersecurity practices. We have a comprehensive cybersecurity program designed to protect sensitive information, ensure the integrity of financial records and transactions, and maintain the confidentiality of our customers' data.
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] Concerning governance, oversight, and compliance, the Board of Directors plays an active role in overseeing the Bank’s cybersecurity program. Regular briefings on cyber risk management and incident response activities are conducted, ensuring a high level of governance and accountability in addressing cybersecurity concerns. Management provides periodic reports to our Technology Committee and our Board of Directors, as well as to our senior management team as appropriate. These reports include updates on the Company’s cyber risks and threats, the status of projects to strengthen our information security systems, assessments of the information security program, and the emerging threat landscape.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block] The Company's cybersecurity function is headed by the Senior Vice President Chief Information Security Officer ("CISO") who is responsible for managing information, cyber security as well all technology risks by developing and implementing information and cyber security programs, policies, strategies, architecture, standards, and procedures and acts as the first line of defense. The CISO leads a team of security professionals in safeguarding the Company's critical data, systems, and assets against threats, breaches, and attacks. The CISO is responsible for ensuring the confidentiality, integrity, and availability of information assets.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]
The Company uses a multiple lines of defense management approach to managing cybersecurity. The Company's cybersecurity function is headed by the Senior Vice President Chief Information Security Officer ("CISO") who is responsible for managing information, cyber security as well all technology risks by developing and implementing information and cyber security programs, policies, strategies, architecture, standards, and procedures and acts as the first line of defense. The CISO leads a team of security professionals in safeguarding the Company's critical data, systems, and assets against threats, breaches, and attacks. The CISO is responsible for ensuring the confidentiality, integrity, and availability of information assets.

The Company's enterprise-wide technology risk management (ETRM) function acts as the second line of defense and provides independent risk oversight for the Company's technology operating infrastructure and operations. The ETRM function manages testing of technology controls, technology risk assessments, risk reporting, information security third-party due diligence, monitoring the implementation of risk mitigation actions, and tracking their effectiveness over time.

The Company's internal audit department acts as the third line of defense, providing the independent assurance function.
Concerning governance, oversight, and compliance, the Board of Directors plays an active role in overseeing the Bank’s cybersecurity program. Regular briefings on cyber risk management and incident response activities are conducted, ensuring a high level of governance and accountability in addressing cybersecurity concerns. Management provides periodic reports to our Technology Committee and our Board of Directors, as well as to our senior management team as appropriate. These reports include updates on the Company’s cyber risks and threats, the status of projects to strengthen our information security systems, assessments of the information security program, and the emerging threat landscape.
Cybersecurity Risk Role of Management [Text Block]
The Company uses a multiple lines of defense management approach to managing cybersecurity. The Company's cybersecurity function is headed by the Senior Vice President Chief Information Security Officer ("CISO") who is responsible for managing information, cyber security as well all technology risks by developing and implementing information and cyber security programs, policies, strategies, architecture, standards, and procedures and acts as the first line of defense. The CISO leads a team of security professionals in safeguarding the Company's critical data, systems, and assets against threats, breaches, and attacks. The CISO is responsible for ensuring the confidentiality, integrity, and availability of information assets.

The Company's enterprise-wide technology risk management (ETRM) function acts as the second line of defense and provides independent risk oversight for the Company's technology operating infrastructure and operations. The ETRM function manages testing of technology controls, technology risk assessments, risk reporting, information security third-party due diligence, monitoring the implementation of risk mitigation actions, and tracking their effectiveness over time.

The Company's internal audit department acts as the third line of defense, providing the independent assurance function.
Concerning governance, oversight, and compliance, the Board of Directors plays an active role in overseeing the Bank’s cybersecurity program. Regular briefings on cyber risk management and incident response activities are conducted, ensuring a high level of governance and accountability in addressing cybersecurity concerns. Management provides periodic reports to our Technology Committee and our Board of Directors, as well as to our senior management team as appropriate. These reports include updates on the Company’s cyber risks and threats, the status of projects to strengthen our information security systems, assessments of the information security program, and the emerging threat landscape.
Cybersecurity Risk Management Positions or Committees Responsible [Flag] true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block] The Company's cybersecurity function is headed by the Senior Vice President Chief Information Security Officer ("CISO") who is responsible for managing information, cyber security as well all technology risks by developing and implementing information and cyber security programs, policies, strategies, architecture, standards, and procedures and acts as the first line of defense. The CISO leads a team of security professionals in safeguarding the Company's critical data, systems, and assets against threats, breaches, and attacks. The CISO is responsible for ensuring the confidentiality, integrity, and availability of information assets.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block] Senior Vice President Chief Information Security Officer ("CISO")
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]
The Company uses a multiple lines of defense management approach to managing cybersecurity. The Company's cybersecurity function is headed by the Senior Vice President Chief Information Security Officer ("CISO") who is responsible for managing information, cyber security as well all technology risks by developing and implementing information and cyber security programs, policies, strategies, architecture, standards, and procedures and acts as the first line of defense. The CISO leads a team of security professionals in safeguarding the Company's critical data, systems, and assets against threats, breaches, and attacks. The CISO is responsible for ensuring the confidentiality, integrity, and availability of information assets.

The Company's enterprise-wide technology risk management (ETRM) function acts as the second line of defense and provides independent risk oversight for the Company's technology operating infrastructure and operations. The ETRM function manages testing of technology controls, technology risk assessments, risk reporting, information security third-party due diligence, monitoring the implementation of risk mitigation actions, and tracking their effectiveness over time.

The Company's internal audit department acts as the third line of defense, providing the independent assurance function.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag] true
v3.25.4
Summary of Significant Accounting Policies (Policies)
12 Months Ended
Dec. 31, 2025
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Principles of Consolidation
Principles of Consolidation

The accompanying consolidated financial statements include the accounts of Columbia Financial, Inc., its wholly-owned subsidiaries, Columbia Bank ("Columbia") (including the accounts of Freehold Bank, which merged with an into Columbia effective as of October 5, 2024), and Columbia's wholly-owned subsidiaries, Columbia Investment Services, Inc., 1901 Residential Management Co. LLC, First Jersey Title Services, Inc., 1901 Commercial Management Co. LLC, Stewardship Realty LLC, Columbia Insurance Services, Inc., and 19-01 Community Development Corporation, (collectively, the “Company”). In May 2024, Columbia dissolved its wholly-owned subsidiary 2500 Broadway Corp. and CSB Realty Corp, a wholly-owned subsidiary of 2500 Broadway Corp. The accounts of the MHC are not consolidated in the consolidated financial statements of the Company. In consolidation, all intercompany accounts and transactions are eliminated. Certain reclassifications have been made in the consolidated financial statements to conform to current year classifications.
The Company also owns 100% of the common stock of Stewardship Statutory Trust I (the "Trust"), a statutory business trust incorporated in Delaware which was acquired in the Company's merger with Stewardship Financial in November 2019. In accordance with ASC Topic 810, Consolidation, the Trust was classified as a variable interest entity and did not satisfy the conditions for consolidation. Accordingly, the Trust, which owns $7.0 million of trust preferred securities, which represents 100% of the Trust's assets, is treated as an unconsolidated subsidiary.
Basis of Financial Statement Presentation
Basis of Financial Statement Presentation

The consolidated financial statements of the Company have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”), including the elimination of all significant intercompany accounts and transactions during consolidation. In preparing the consolidated financial statements, management is required to make estimates, significant judgments and assumptions that affect the reported amounts of assets and liabilities as of the dates of the Consolidated Statements of Financial Condition and Consolidated Statements of Income for the periods presented. Actual results could differ from these judgments and estimates under different conditions, resulting in a change that could have a material impact on the carrying values of our assets and liabilities and our results of operations. Material estimates that involve significant judgements and assumptions that are particularly susceptible to change are the determination of the adequacy of the allowance for credit losses, evaluation of the need for valuation allowances on deferred tax assets, evaluation of goodwill for impairment, evaluation of other-than-temporary impairment on securities, and determination of liabilities related to retirement and other post-retirement benefits. These estimates, significant judgements and assumptions are evaluated on an ongoing basis and are adjusted when facts and circumstances dictate. Illiquid credit markets, volatile securities markets, and declines in the housing market and the economy generally have combined to increase the uncertainty inherent in such estimates and assumptions. Changes in estimates resulting from continuing changes in the economic environment will be reflected in the consolidated financial statements in future periods.
Cash and Cash Equivalents
Cash and Cash Equivalents

Cash and cash equivalents include cash on hand, amounts due from banks, interest-bearing deposits at other financial institutions and short-term investments.
Securities
Securities

Securities are classified as available for sale and held to maturity. Management determines the appropriate classification of securities at the time of purchase. Securities that management has the positive intent and ability to hold to maturity are classified as held to maturity and reported at amortized cost. Securities not classified as held to maturity are classified as available for sale and carried at estimated fair value, with unrealized holding gains or losses, net of taxes, reported as a separate component of accumulated other comprehensive income or loss ("OCI") included in stockholders' equity.

In accordance with ASC Topic 326, Financial Instruments Credit Losses, for available for sale securities, the Company first assesses whether a loss is from credit or other factors and considers the extent to which fair value is less than amortized cost, any changes to the rating of the security by a rating agency and adverse conditions 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 is less than the amortized cost, a credit loss would be recorded through an allowance for credit losses, limited by the amount that the fair value is less than the amortized cost basis.

The fair values of these securities are based on market quotations or matrix pricing as discussed in note 17. The Company evaluates securities for other-than-temporary impairment at each reporting period and more frequently when economic or market conditions warrant such evaluation. In this evaluation, if such declines were deemed other-than-temporary, management would measure the total credit-related component of the unrealized loss and recognize that portion of the loss as a charge to current period earnings. The remaining portion of the unrealized loss would be recognized as an adjustment to OCI. The fair value of the securities portfolio is significantly affected by changes in interest rates. In general, as interest rates rise, the fair value of fixed-rate securities decreases and as interest rates fall, the fair value of fixed-rate securities increases. The Company determines if it has the intent to sell securities or if its more likely than not that the Company would be required to sell the securities before the anticipated recovery. If either exists, the decline in value is considered other-than-temporary and would be recognized in current period earnings.
    
Premiums and discounts on securities are generally amortized and accreted to income over the contractual lives of the securities using the level-yield method. Premiums on callable securities are amortized to the earliest call date. Dividend and interest income are recognized when earned. Realized gains and losses are recognized when securities are sold or called based on the specific identification method.

In the ordinary course of business, securities are pledged as collateral in conjunction with the Company’s borrowings, lines of credit, and public funds on deposit.
Federal Home Loan Bank Stock
Federal Home Loan Bank Stock

The Bank, as a member of the Federal Home Loan Bank of New York (the "FHLB"), is required to hold shares of capital stock of the FHLB based on its activities, primarily its outstanding borrowings. The investment is carried at cost, or par value, which approximates fair value. Cash dividends are reported as income.
Loans Held-for-Sale
Loans Held-for-Sale
Loans held-for-sale consists of loans intended for sale in the secondary market. These loans are carried at the lower of cost or estimated fair value, less costs to sell, as determined on an individual loan basis. Net unrealized losses, if any, are recognized in a valuation allowance through a charge to earnings. Origination fees and costs on loans held-for-sale are deferred and recognized on settlement dates as a component of the gain or loss on sale. Loans held-for-sale are generally sold with loan servicing rights retained by the Bank.
Loans Receivable, Purchased Credit-Deteriorated ("PCD") Loans and Other Real Estate Owned ("OREO")
Loans Receivable

Loans receivable are carried at unpaid principal balances adjusted by unamortized premiums and unearned discounts, net deferred origination fees and costs, purchase accounting fair value adjustments and the allowance for credit losses. The Company defers loan origination fees and certain direct loan origination costs and accretes such amounts as an adjustment to the yield over the expected lives of the related loans using the level-yield method. Interest income on loans is accrued on unpaid principal balances and credited to income as earned. Premiums and discounts on loans purchased are amortized or accreted as an adjustment to yield over the contractual lives of the related loans using methodologies which approximate the level-yield method.
(2)    Summary of Significant Accounting Policies (continued)

Loans Receivable (continued)

A loan is considered delinquent when payment has not been received within 30 days of its contractual due date, or when the Company does not expect to receive all principal and interest payments owned substantially in accordance with the terms of the loan agreement, regardless of the past due status. Generally, a loan is designated as a non-accrual loan when the payment is 90 days or more in arrears of its contractual due date, or if the following criteria are met: i) the current debt-service coverage ratio is equal to or is in excess of 1.0x; ii) the guarantor does not demonstrate the capacity to support the annual debt service requirement; and iii) the loan-to-value percentage is greater than 90%. Non-accruing loans are returned to accrual status after there has been a sustained period of repayment performance and both principal and interest are deemed collectible.

When a loan is placed on non-accrual status, any interest accrued but not received is reversed against interest income. Payments received on a non-accrual loan are either applied to the outstanding principal balance or recorded as interest income, depending on an assessment of the ability to collect the loan. The Company identifies loans that may need to be charged-off as a loss by reviewing all delinquent loans, classified loans, and other loans for which management may have concerns about collectability.

The Company may evaluate individual loans for which it is probable, based on current information, that the Company will not collect all amounts due under the contractual terms of the loan agreement. The Company considers the population of loans in its analysis to include loans not accruing interest and loan modifications. Other loans may be included in the population of loans to be evaluated if management has specific information of a collateral shortfall. Loans individually analyzed are measured based on the fair value of collateral if the loan is collateral dependent, or cash flows discounted at the loan-level effective interest rate. Payments received on individually analyzed loans are recognized on a cash basis.

Purchased Credit-Deteriorated ("PCD") Loans

Loans acquired in a business combination that have experienced more than insignificant deterioration in credit quality since origination are considered purchased credit deterioration (“PCD”) loans. The Company evaluated acquired loans for deterioration in credit quality based on any of, but not limited to, the following: (1) non-accrual status; (2) loan modification; (3) risk ratings of special mention, substandard or doubtful; and (4) delinquency status. At the acquisition date, an estimate of expected credit losses is made for groups of PCD loans with similar risk characteristics and individual PCD loans without similar risk characteristics. This initial allowance for credit losses is allocated to individual PCD loans and added to the purchase price or acquisition date fair values to establish the initial amortized cost basis of the PCD loans. As the initial allowance for credit losses is added to the purchase price, there is no credit loss expense recognized upon acquisition of a PCD loan. Any difference between the unpaid principal balance of PCD loans and the amortized cost basis is considered to relate to noncredit factors and results in a discount or premium.

Discounts and premiums are recognized through interest income on a level-yield method over the life of the loans. For acquired loans not deemed PCD at acquisition, the differences between the initial fair value and the unpaid principal balance are recognized as interest income on a level-yield basis over the lives of the related loans. At the acquisition date, an initial allowance for expected credit losses is estimated and recorded as credit loss expense.

Other Real Estate Owned ("OREO")

OREO is comprised of properties acquired in partial or total satisfaction of problem loans. The properties are recorded at fair value less estimated costs to sell on the date acquired or on the date that the Company acquires effective control over the property. Gains or losses arising at the time of acquisition of such properties are charged against the allowance for credit losses. During the holding period, OREO continues to be measured at the lower of cost or fair value less estimated costs to sell. Subsequent declines in value are expensed as incurred. Gains and losses realized from the sale of OREO, as well as valuation adjustments and expenses of operation, are included in non-interest expense.
The balance of the allowance for credit losses is based on expected loss methodology, referred to as the "CECL" methodology. The loan portfolio segmentation includes seven portfolio segments taking into consideration common loan attributes and risk characteristics, as well as historical reporting metrics and data availability. Accrued interest receivable on loans receivable is reported as a component of accrued interest receivable in the Consolidated Statements of Financial Condition, which totaled $34.7 million and $33.5 million at December 31, 2025 and 2024, respectively, and is excluded from the estimate of credit losses.
The Allowance for Credit Losses ("ACL") is established through the provision for credit losses that are charged to income, which is based upon an evaluation of estimated losses in the current loan portfolio, including the evaluation of individually analyzed loans. Charge-offs against the ACL are taken on loans where management determines that the collection of loan principal and interest is unlikely. Recoveries made on loans that have been charged-off are credited to the ACL. Although we believe we have established and maintained the ACL on loans at appropriate levels, changes in reserves may be necessary if actual economic and other conditions differ substantially from the forecast used in estimating the ACL.
Allowance for Credit Losses on Loans Receivable, Unfunded Commitments and Loan Modifications
Allowance for Credit Losses on Loans Receivable

The determination of the allowance for credit losses (“ACL”) on loans is considered a critical accounting estimate by management because of the high degree of judgment involved in determining qualitative loss factors, the subjectivity of the assumptions used, and the potential for changes in the forecasted economic environment. The ACL is maintained at a level management considers adequate to provide for estimated losses and impairment based upon an evaluation of known and inherent risk in the loan portfolio. The ACL consists of two elements: (1) identification of loans that must be individually analyzed for impairment and (2) establishment of an ACL for loans collectively analyzed.
(2)    Summary of Significant Accounting Policies (continued)

Allowance for Credit Losses on Loans Receivable (continued)

Portfolio segments are defined at the level which an entity develops and documents a systematic methodology to determine its allowance for credit losses. Management developed segments for estimating losses based on the type of borrower and collateral which is generally based upon federal call report segmentation. The segments have been combined, or sub-segments have been added as needed to ensure loans of similar risk profiles are appropriately pooled.

We maintain a loan review system that provides a periodic review of the loan portfolio and the identification of individually analyzed loans. The ACL for individually analyzed loans is based on the fair value of collateral or cash flows. While management uses current information available to make such evaluations, future adjustments to the allowance may be necessary if economic conditions differ substantially from the assumptions used in making the evaluations.

The ACL quantitative allowance for each segment is measured using a discounted cash flow methodology incorporating an econometric, probability of default ("PD") and loss given default ("LGD") with distinct segment-specific multi-variate regression models applied. Expected credit losses are estimated over the life of the loans by measuring the difference between the net present value of modeled cash flows and amortized cost basis. Contractual cash flows over the contractual life of the loans are the basis for the modeled cash flows, adjusted for model defaults and expected prepayments and discounted at the loan-level effective interest rate. The contractual term excludes expected extensions, renewals, and modifications.

Management estimates the ACL using relevant and reliable information from internal and external sources, related to past events, current conditions, and a reasonable and supportable forecast. Historical credit loss experience for both the Company and its segment-specific peers provides the basis for the estimate of expected credit losses. Credit losses over a defined period are converted to PD rate curves through the use of segment-specific LGD risk factors that convert default rates to loss severity based on industry-level, observed relationships between the two variables for each segment, primarily due to the nature of the underlying collateral. These risk factors were assessed for reasonableness against the Company’s own loss experience and adjusted in certain cases when the relationship between the Company’s historical default and loss severity deviate from that of the wider industry. The historical PD curves, together with corresponding economic conditions, establish a quantitative relationship between economic conditions and loan performance through an economic cycle.

Using the historical relationship between economic conditions and loan performance, management’s expectation of future loan performance is incorporated using a single economic forecast of macroeconomic variables (i.e., unemployment, gross domestic product, vacancy, and home price index). This forecast is applied over a period that management has determined to be reasonable and supportable. Beyond the period over which management can develop or source a reasonable and supportable forecast, the model reverts to long-term average historical loss rates using a straight-line, time-based methodology. The Company's current forecast period is six quarters, with a four-quarter reversion period to long-term average historical loss rates.

After quantitative considerations, management applies additional qualitative adjustments that consider the expected impact of certain factors not fully captured in the quantitative reserve. Qualitative adjustments include but are not limited to concentrations of large loan balances, delinquency trends, change in collateral values within segments, and other considerations.

The ACL is established through the provision for credit losses that are charged to income, which is based upon an evaluation of estimated losses in the current loan portfolio, including the evaluation of individually analyzed loans. Charge-offs against the ACL are taken on loans where management determines that the collection of loan principal and interest is unlikely. Recoveries made on loans that have been charged-off are credited to the ACL. Although we believe we have established and maintained the ACL on loans at appropriate levels, changes in reserves may be necessary if actual economic and other conditions differ substantially from the forecast used in estimating the ACL.

Our financial results are affected by the changes in and the level of the ACL. This process involves our analysis of internal and external variables, and it requires that we exercise judgment to estimate an appropriate ACL. As a result of the uncertainty associated with this subjectivity, we cannot assure the precision of the amount reserved, should we experience sizable loan losses in any particular period and/or significant changes in assumptions or economic condition. We believe the primary risks inherent in the portfolio are a general decline in the economy, a decline in real estate market values, rising unemployment, increasing vacancy rates, and increases in interest rates in the absence of economic improvement or any other such factors. Any one or a combination of these events may adversely affect a borrower's ability to repay its loan, resulting in increased delinquencies and loan losses. Accordingly, we have recorded loan credit losses at a level which is estimated to represent the current risk in its loan portfolio.
(2)    Summary of Significant Accounting Policies (continued)

Allowance for Credit Losses on Loans Receivable (continued)

For our non-performing loans, the allowance is determined on an individual basis using the present value of the expected cash flows, or for collateral dependent loans, the fair value less estimated costs to sell. We continue to assess the collateral of loans and update our appraisals on these loans on an annual basis. To the extent the property values decline, there could be additional losses on these non-performing assets, which may be material. Management considered these market conditions in deriving the estimated ACL. Should economic difficulties occur, the ultimate amount of loss could vary from our current estimate.

Allowance for Credit Losses on Unfunded Commitments

The Company is required to include unfunded commitments that are expected to be funded in the future within the allowance calculation, other than those that are unconditionally cancellable. To arrive at that reserve, the reserve percentage for each applicable segment is applied to the unused portion of the expected commitment balance and is multiplied by the expected funding rate. To determine the expected funding rate, the Company uses a historical utilization rate for each segment. The allowance for credit losses for off-balance-sheet exposures is reported in other liabilities in the Consolidated Statements of Financial Condition. The liability represents an estimate of expected credit losses arising from off-balance-sheet exposures such as unfunded commitments.

Loan Modifications

The Company assesses all loan modifications to determine whether one is granted to a borrower experiencing financial difficulty, regardless of whether the modified loans terms include a concession. Modifications made to borrowers experiencing financial difficulty may include principal or interest forgiveness, forbearance, interest rate reductions, term extensions, or a combination of these events intended to minimize economic loss and to avoid foreclosure or repossession of collateral.

The Company evaluates whether the modifications represent a new loan or a continuation of an existing loan. A modification or refinancing results in a new loan if the terms of the new loan are at least favorable to the Company and customers with similar collection risks who are not refinancing or restructuring their loan, and the modification to the terms of the loan is deemed to be more than minor. A modification is considered to be more than minor if the difference between the present value of the cash flows of the new obligation and the remaining cash flows of the original obligation, both discounted using the effective interest rate of the original debt, is 10% or greater.

If a modification does not meet the definition of a new loan, the modified loan will be treated as a continuation of the existing loan and all unamortized net fees and/or costs, and any prepayment penalties will be carried forward as part of the net new loan balance.

Modified loans that were accruing prior to their modification where income was reasonably assured subsequent to the modification, maintain their accrual status. Modified loans for which collectability was not reasonably assured, are placed on non-accrual status, interest accruals cease, and uncollected accrued interest is reversed and charged against current income. Non-accruing modified loans may be returned to accrual status when there is a sustained period of repayment performance (generally six consecutive months of payments), and both principal and interest are deemed collectible.
Loans Sold and Serviced
Loans Sold and Serviced

The Company periodically sells loans to investors and retains the servicing of these loans for a fee. Gains or losses on the sale of loans are recorded on trade date using the specific-identification method.
Office Properties and Equipment
Office Properties and Equipment
Land is carried at cost. Office properties, land and building improvements, furniture and equipment, and leasehold improvements are carried at cost, less accumulated depreciation and amortization. Depreciation and amortization of office properties and equipment is computed on a straight-line basis over their estimated useful lives (generally 40 years for buildings, 10 years to 20 years for land and building improvements, 2 years to 10 years for furniture and equipment). Leasehold improvements, carried at cost, net of accumulated depreciation, are amortized over the terms of the related leases or the estimated useful lives of the assets, whichever is shorter. Major improvements are capitalized, while repairs and maintenance costs are charged to expense as incurred. Upon retirement or sale, any gain or loss is recognized as incurred.
Bank-owned Life Insurance ("BOLI")
Bank-owned Life Insurance ("BOLI")
Bank-owned life insurance is accounted for using the cash surrender value method and is recorded at its net realizable value. The change in the net asset value is recorded as a component of non-interest income. A deferred liability has been recorded for the estimated cost of post-retirement life insurance benefits accruing to applicable employees and directors covered by an endorsement split-dollar life insurance arrangement.
Goodwill and Intangible Assets
Goodwill and Intangible Assets

Intangible assets of the Company consist of goodwill, core deposit intangibles, and mortgage servicing rights. Goodwill represents the excess of the purchase price over the fair value of net assets acquired in purchase acquisitions. In accordance with GAAP, goodwill with an indefinite useful life is not amortized, but is evaluated for impairment on an annual basis, or more frequently if events or changes in circumstances indicate potential impairment between annual measurement dates. As permitted by GAAP, the Company prepares a qualitative assessment in determining whether goodwill may be impaired. The factors considered in the assessment include macroeconomic conditions, industry and market conditions and overall financial performance of the Company, among others. The Company completed its annual goodwill impairment test as of December 31, 2025, based upon its qualitative assessment of goodwill and concluded that goodwill was not impaired and no further quantitative analysis was warranted.

Core deposit intangibles represent the intangible value of depositor relationships acquired by the Company through purchase acquisitions of Stewardship, Freehold and RSI. The premiums ascribed to these deposits are amortized over their estimated useful lives.

Mortgage servicing rights are recorded when purchased or when originated mortgage loans are sold, with servicing rights retained. Mortgage servicing rights are amortized on an accelerated method based upon the estimated lives of the related loans and generally adjusted for prepayments. Mortgage servicing rights are carried at the lower of amortized cost or fair value.
Leases
Leases

The Company determines if an arrangement is a lease at inception. The Company's leases primarily relate to real estate property for branches and office space. All the Company's leases are classified as operating leases and the related right-of-use asset ("ROU") and lease liability are included in other assets and other liabilities, respectively on the Consolidated Statements of Financial Condition.

ROU assets represent the Company’s right to use an underlying asset for the lease term, and lease liabilities represent the Company’s obligation to make lease payments arising from the lease arrangements. The calculated amounts of the ROU asset and lease liabilities are impacted by the length of the lease term and the discount rate used to calculate the present value of minimum lease payments. As the Company's leases do not provide an implicit rate, the discount rate used in determining the lease liability for each individual lease is the Company's incremental borrowing rate. The present value of the lease liability may include the impact of options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options provided in the lease terms. Operating lease expense is recognized on a straight-line basis over the lease term, while variable lease payments are recognized as incurred. Lease agreements that include lease and non-lease components, such as common area maintenance charges, are accounted for separately.
Post-retirement Benefits
Post-retirement Benefits

The Company provides certain health care and life insurance benefits to eligible retired employees under a Post-retirement Plan. The Company accrues the cost of retiree health care and other benefits during the employee's period of active service. Effective January 1, 2019, the Post-retirement Plan was closed to new hires.

Through the acquisition of the RSI Entities, the Company acquired a non-funded Post-retirement Plan. This defined benefit post-retirement healthcare plan covers substantially all retirees and employees. Effective January 1, 2024, the RSI Post-retirement Plan was merged into the Columbia Bank Post-retirement Plan.
Employee Benefits Plans
Employee Benefit Plans

The Company maintains a single employer, tax-qualified defined benefit pension plan (the "Pension Plan") which covers full-time employees that satisfy the Pension Plan's eligibility requirements. The benefits are based on years of service and the employee's average compensation for the highest five consecutive years of employment. Effective October 1, 2018, newly hired employees are not eligible to participate in the Pension Plan as the Pension Plan was closed to new employees as of that date.
(2)    Summary of Significant Accounting Policies (continued)

Employee Benefit Plans (continued)

The policy is to fund at least the minimum contribution required by the Employee Retirement Income Security Act of 1974. GAAP requires an employer to: (a) recognize in its statement of financial position the over-funded or under-funded status of a defined benefit post-retirement plan measured as the difference between the fair value of plan assets and the benefit obligation; (b) measure a plan’s assets and its obligations that determine its funded status at the end of the employer’s fiscal year (with limited exceptions); and (c) recognize as a component of other comprehensive income (loss), net of tax, the actuarial gains and losses and the prior service costs and credits that arise during the period. The assets of the plan are primarily invested in fixed income and equity funds.

In connection with the acquisition of the RSI Entities, the Company acquired a funded pension plan. The benefits are based on years of service and the employee’s compensation, as defined. The Plan was amended effective March 31, 2011, to freeze the Plan so that no employee shall commence or recommence participation in the Plan, that there shall be no further benefit accruals under the Plan, and that compensation received after the effective date shall not be recognized for any purpose under the Plan. Effective September 30, 2023, the RSI Pension Plan was merged into the Columbia Bank Pension Plan.

The Company also maintains a Retirement Income Maintenance Plan (the "RIM Plan") which is a non-qualified defined benefit plan which provides benefits to all employees of the Company if their benefits under the Pension Plan are limited by Internal Revenue Code Sections 415 and 401(a)(17).    

Columbia Bank has a 401(k) plan covering substantially all employees. Columbia Bank may match a percentage of the first 3.00% to 4.50% contributed by participants. Columbia's matching contribution, if any, is determined by their Board of Directors in its sole discretion.

Columbia Bank has an Employee Stock Ownership Plan ("ESOP"). The funds borrowed by the ESOP from the Company to purchase the Company's common stock are being repaid from Columbia Bank's contributions over a period of 20 years. The Company's common stock not allocated to participants is recorded as a reduction of stockholders' equity at cost. Compensation expense for the ESOP is based on the average price of the Company's stock and the amount of shares committed to be allocated during each period.

Columbia Bank has a Supplemental Executive Retirement Plan ("SERP"). The SERP is a non-qualified plan which provides supplemental retirement benefits to eligible officers (those designated by the Board of Directors) of the Company who are prevented from receiving the full benefits contemplated by the ESOP's benefit formulas under tax law limits for tax-qualified plans. In addition, the Company maintains a stock based deferral plan (the "Stock Based Deferral Plan") for certain executives and directors. The Company records a deferred compensation equity account and corresponding contra-equity account for the cost of the shares held by the Stock Based Deferral Plan and SERP.

The Company also has a Supplemental Executive Retirement Plan for Certain Executives, as designated by the Board of Directors, to provide non-qualified retirement benefits to participants.

Columbia Bank also maintains a non-qualified savings income maintenance deferred compensation plan (the "SIM Plan") that provides supplemental benefits to certain executives who are prevented from receiving the full benefits contemplated by the 401(k) Plan under tax law limits for tax-qualified plans, and a Deferred Compensation Plan for directors.

Columbia Bank also sponsors a directors retirement plan, a director and executive deferred compensation plan, and a supplemental executive retirement plan for certain current and former directors and officers of the Bank.

Through the acquisition of the RSI Entities, the Company also acquired an executive incentive retirement plan, a director and executive deferred compensation plan, a supplemental executive retirement plan, a key life insurance plan and a split-dollar life insurance plan for certain current and former directors and officers of the Bank.
Through the acquisition of the Freehold Entities, the Company also acquired a supplemental executive retirement plan, a director and executive deferred retirement income plan, and a director deferred retirement plan for current and former directors and officers of the Bank.
Derivatives
Derivatives

The Company uses derivative financial instruments as components of its market risk management, principally to manage interest rate risk. Certain derivatives are entered into in connection with transactions with commercial customers. Derivatives are not used for speculative purposes. All derivatives are recognized as either assets or liabilities in the Consolidated Statements of Financial Condition, reported at fair value and presented on a gross basis. Until a derivative is settled, a favorable change in fair value results in an unrealized gain that is recognized as an asset, while an unfavorable change in fair value results in an unrealized loss that is recognized as a liability.

The Company generally applies hedge accounting to its derivatives used for market risk management purposes. Hedge accounting is permitted only if specific criteria are met, including a requirement that a highly effective relationship exists between the derivative instrument and the hedged item, both at inception of the hedge and on an ongoing basis. Changes in the fair value of effective fair value hedges are recognized in current earnings (with the change in fair value of the hedged asset or liability also recognized in earnings). Changes in the fair value of effective cash flow hedges are recognized in other comprehensive income (loss) until earnings are affected by the variability in cash flows of the designated hedged item. Ineffective portions of hedge results are recognized in current earnings. Changes in the fair value of derivatives for which hedge accounting is not applied are recognized in current earnings.

The Company formally documents at inception all relationships between the derivative instruments and the hedged items, as well as its risk management objectives and strategies for undertaking the hedge transactions. This process includes linking all derivatives that are designated as hedges to specific assets and liabilities, or to specific firm commitments. The Company also formally assesses, both at inception of the hedge and on an ongoing basis, whether the derivatives that are used in hedging transactions are highly effective in offsetting changes in the fair values or cash flows of the hedged items. If it is determined that a derivative is not highly effective or has ceased to be a highly effective hedge, the Company would discontinue hedge accounting prospectively. Gains or losses resulting from the termination of a derivative accounted for as a cash flow hedge remain in other comprehensive income (loss) and is (accreted) amortized to earnings over the remaining period of the former hedging relationship.

Certain derivative financial instruments are offered to certain commercial banking customers to manage their risk of exposure and risk management strategies. These derivative instruments consist primarily of currency forward contracts and interest rate swap contracts. The risks associated with these transactions is mitigated by simultaneously entering into similar transactions having essentially offsetting terms with a third-party. In addition, the Company executes interest rate swaps with third parties in order to hedge the interest rate risk of short-term FHLB advances.
Income Taxes
Income Taxes

The Company and its subsidiaries file consolidated federal income tax returns. Federal income taxes are allocated to each entity based on their respective contributions to taxable income of the consolidated income tax returns. Separate state income taxes are filed for the Company and its subsidiaries on either a consolidated or unconsolidated basis as required by each jurisdiction.
The Company records income taxes using the asset and liability method. Federal and state income taxes have been provided on the basis of the Company's income or loss as reported in accordance with GAAP. The amounts reflected on the Company's federal and state income tax returns differ from these provisions due principally to temporary differences in the reporting of certain items for consolidated financial statement reporting and income tax reporting purposes. Accordingly, deferred tax assets and liabilities: (i) are recognized for the estimated future tax consequences of events that have been recognized in the financial statements or tax returns; (ii) are attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases; and (iii) are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. Where applicable, deferred tax assets are reduced by a valuation allowance for any portions determined not likely to be realized based on the nature and timing of these items. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in income tax expense in the period that includes the enactment date. The valuation allowance is adjusted, by a charge or credit to income tax expense, as changes in facts and circumstances warrant.
Comprehensive Income
Comprehensive Income
Comprehensive income consists of net income and other comprehensive income (loss). Other comprehensive income (loss) includes items recorded in equity, such as unrealized gains and losses on debt securities available for sale, the noncredit component of other than temporary impairment losses on debt securities, unrealized gains and losses on derivatives, and the unfunded status and reclassification of actuarial net (loss) gain associated with the Company's benefit plans. Comprehensive income is presented in a separate Consolidated Statement of Comprehensive Income.
Segment Reporting
Segment Reporting

The Company’s operations are substantially in the financial services industry and include providing traditional banking and other financial services to its customers. Operating segments are components of a business about which separate financial information is available and evaluated regularly by the chief operating decision maker in deciding how to allocate resources and assessing performance. The Company operates primarily in New Jersey through a single reportable operating segment upon which management makes decisions regarding how to allocate resources and assess performance. While the Company’s chief operating decision maker has some limited financial information about the Company's various financial products and services, that information is not complete since it does not include a full allocation of revenue, costs, and capital from key corporate functions; therefore, the Company evaluates financial performance on the Company-wide basis. Management continues to evaluate these business units for separate reporting as facts and circumstances change.
Earnings Per Share ("EPS")
Earnings Per Share ("EPS")

Basic EPS is computed by dividing net income available to common shareholders by the weighted average number of common shares outstanding during the period. For purposes of calculating basic EPS, weighted average common shares outstanding excludes treasury stock, unallocated employee stock ownership plan shares that have not been committed for release and deferred compensation obligations required to be settled in shares of Company stock.
Diluted EPS is computed using the same method as basic EPS and reflects the potential dilution which could occur if stock options and unvested shares were exercised and converted into common stock. The potentially diluted shares would then be included in the weighted average number of shares outstanding for the period using the treasury stock method. Shares issued and reacquired during any period are weighted for the portion of the period that they were outstanding.
Stock Compensation Plans
Stock Compensation Plans

Compensation expense related to stock options and non-vested restricted stock awards is based on the fair value of the award on the measurement date with expense recognized on a straight line basis over the requisite performance or service period. The fair value of stock options is estimated utilizing the Black-Scholes option pricing model. The fair value of non-vested restricted stock awards is generally the closing market price of the Company's common stock on the date of grant. The Company accounts for forfeitures as they occur.
Accounting Pronouncements Adopted
Accounting Pronouncements Adopted

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this ASU require improved annual income tax disclosures surrounding rate reconciliation, income taxes paid, and other disclosures. This update is effective for financial statements issued for fiscal years beginning after December 15, 2024, with early adoption in the interim period permitted. The Company adopted this ASU on January 1, 2025 on a retrospective basis. As it is only disclosure related, this ASU did not have an impact on the Company's consolidated financial statements. See note 15 for additional information.
(2)    Summary of Significant Accounting Policies (continued)    

Accounting Pronouncements Adopted (continued)

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. ASU 2023-07 enhances segment reporting under Topic 820 by expanding the breadth and frequency of segment disclosures. The ASU requires a public entity to disclose entity-wide and segment information in the notes to the financial statements. Disclosures include the measure of profit or loss that the chief operating decision maker uses to assess segment performance and decide how to allocate resources, as well as certain specified amounts included in that measure. This ASU was effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. The Company adopted this guidance as of December 31, 2024, on a retrospective basis. As it is only disclosure related, this ASU did not have an impact on the Company's consolidated financial statements. See note 22 for additional information.
Fair Value Measurements Debt Securities Available for Sale, at Fair Value
For debt securities available for sale, fair value was estimated using a market approach. The majority of these securities are fixed income instruments that are not quoted on an exchange but are traded in active markets. Prices for these instruments are obtained through third-party data service providers or dealer market participants with which the Company has historically transacted both purchases and sales of securities. Prices obtained from these sources include market quotations, matrix pricing and discounted cash flow pricing. Matrix pricing, a Level 2 input, is a mathematical technique used principally to value certain securities to a benchmark or to comparable securities. The Company evaluates the quality of Level 2 matrix pricing through comparison to similar assets with greater liquidity and evaluation of projected cash flows. Discounted cash flows, a Level 3 input, is estimated by discounting the expected future cash flows using the current rates for securities with similar credit ratings and similar remaining maturities. As the Company is responsible for the determination of fair value, it performs quarterly analysis on the prices received from the pricing service to determine whether the prices are reasonable estimates of fair value. Specifically, the Company compares the prices received from the pricing service to a secondary pricing source. Additionally, the Company compares changes in the reported market values and returns to relevant market indices to assess the reasonableness of the reported prices. The Company’s internal price verification procedures and review of fair value methodology documentation provided by independent pricing services has not historically resulted in an adjustment in the prices obtained from the pricing service. The Company may hold debt instruments issued by the U.S. government and U.S. government-sponsored agencies that are traded in active markets with readily accessible quoted market prices that are considered Level 1 inputs. The Company classifies the estimated fair value of its loan portfolio as Level 3.

Equity Securities, at Fair Value

The Company holds equity securities that are traded in active markets with readily accessible quoted market prices that are considered Level 1 inputs. A trust preferred security that is not traded in an active market and Federal Home Loan Mortgage Corporation ("FHLMC") and Federal National Mortgage Association ("FNMA") preferred stock, are considered Level 2 instruments. In addition, Level 2 instruments include Atlantic Community Bankers Bank ("ACBB") stock, which is based on redemption at par value and can only be sold to the issuing ACBB or another institution that holds ACBB stock.
(17)    Fair Value Measurements (continued)

Derivatives

The Company records all derivatives included in other assets and liabilities in the Consolidated Statements of Financial Condition at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting, and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. See note 21 for disclosures related to the accounting treatment for derivatives.

The fair value of the Company's derivatives is determined using discounted cash flow analysis using observable market-based inputs, which are considered Level 2 inputs.
Individually Analyzed Collateral Dependent Loans/Impaired Loans

The fair value of collateral dependent loans that are individually analyzed or were previously deemed impaired is measured based on the present value of expected future cash flows discounted at the loan's effective interest rate or, as a practical expedient, at the loan's observable market price or the fair value of the collateral if the loan is collateral dependent. For individually analyzed loans measured for impairment based on the fair value of the underlying collateral, fair value was estimated using a market approach. The Company measures the fair value of collateral underlying impaired loans primarily through obtaining independent appraisals that rely upon quoted market prices for similar assets in active markets. These appraisals include adjustments, on an individual case-by-case basis, to comparable assets based on the appraisers’ market knowledge and experience, as well as adjustments for estimated costs to sell between 6% and 8%. For non-collateral dependent loans, management estimates fair value using discounted cash flows based on inputs that are largely unobservable. The Company classifies these loans as Level 3 within the fair value hierarchy.

Other Real Estate Owned
    
    Other real estate owned is initially recorded at the lower of the recorded investment in the loan at the time of foreclosure or at fair value, less estimated costs to sell, when acquired. Fair value is generally based on an independent appraisal which includes adjustments to comparable assets based on the appraisers' market knowledge and experience. Subsequent write-downs in the value of other real estate owned is recorded though expense as incurred. Other real estate owned is considered Level 3 within the fair value hierarchy.

Mortgage Servicing Rights, Net ("MSR"s")

Mortgage servicing rights are carried at the lower of cost or estimated fair value. The estimated fair value of MSRs is obtained through an analysis of future cash flows, incorporating assumptions that market participants would use in determining fair value including market discount rates, prepayments speeds, servicing income, servicing costs, default rates and other market driven data, including the market's perception of future interest rate movements. The prepayment speed and the discount rate are considered two of the most significant inputs in the model. A significant degree of judgment is involved in valuing the mortgage servicing rights using Level 3 inputs. The use of different assumptions could have a significant effect on this fair value estimate.
Other Fair Value Disclosures

The Company is required to disclose estimated fair value of financial instruments, both assets and liabilities on and off the balance sheet, for which it is practicable to estimate fair value. A description of the valuation methodologies used for those assets and liabilities not recorded at fair value on a recurring or non-recurring basis are set forth below.

Cash and Cash Equivalents

For cash and due from banks, federal funds sold and short-term investments, the carrying amount approximates fair value due to their nature and short-term maturities.

Debt Securities Held to Maturity

For debt securities held to maturity, fair value was estimated using a market approach. The majority of the Company’s securities are fixed income instruments that are not quoted on an exchange but are traded in active markets. Prices for these instruments are obtained through third-party data service providers or dealer market participants with which the Company has historically transacted both purchases and sales of securities. Prices obtained from these sources include market quotations and matrix pricing. Matrix pricing, a Level 2 input, is a mathematical technique used principally to value certain securities to benchmark or to compare securities. The Company evaluates the quality of Level 2 matrix pricing through comparison to similar assets with greater liquidity and evaluation of projected cash flows. As the Company is responsible for the determination of fair value, it performs quarterly analysis on the prices received from the pricing service to determine whether the prices are reasonable estimates of fair value. Specifically, the Company compares the prices received from the pricing service to a secondary pricing source. Additionally, the Company compares changes in the reported market values and returns to relevant market indices to assess the reasonableness of the reported prices. The Company’s internal price verification procedures and review of fair value methodology documentation provided by independent pricing services has not historically resulted in an adjustment in the prices obtained from the pricing service. The Company also holds debt instruments issued by the U.S. government and U.S. government sponsored agencies that are traded in active markets with readily accessible quoted market prices that are considered Level 1 inputs within the fair value hierarchy.
(17)    Fair Value Measurements (continued)

Federal Home Loan Bank Stock ("FHLB")

The fair value of FHLB stock is based on redemption at par value and can only be sold to the issuing FHLB, to other FHLBs, or to other member banks. As such, the Company's FHLB stock is recorded at cost, or par value, and is evaluated for impairment each reporting period by considering the ultimate recoverability of the investment rather than temporary declines in value. The Company classifies the estimated fair value as Level 2 within the fair value hierarchy.

Loans Receivable

Fair values are estimated for portfolios of loans with similar financial characteristics. Loans are segregated by type such as commercial mortgage, residential mortgage, commercial, construction, consumer, and other. Each loan category is further segmented into fixed and adjustable rate interest terms and into performing and non-performing categories.

The fair value of performing loans was estimated using a combination of techniques, including a discounted cash flow model that utilizes a discount rate that reflects the Company's current pricing for loans with similar characteristics and remaining maturity, adjusted by an amount for estimated credit losses inherent in the portfolio at the balance sheet date. The rates take into account the expected yield curve, as well as an adjustment for prepayment risk, when applicable. The Company classifies the estimated fair value of its loan portfolio as Level 3.

The fair value for significant non-performing loans was based on recent external appraisals of collateral securing such loans, adjusted for the timing of anticipated cash flows. The Company classifies the estimated fair value of its non-performing loan portfolio as Level 3.

Deposits

The fair value of deposits with no stated maturity, such as demand, money market, and savings and club deposits are payable on demand at each reporting date and classified as Level 2. The estimated fair value of certificates of deposit was based on the discounted value of contractual cash flows. The discount rate was estimated using the Company’s current rates offered for deposits with similar remaining maturities. The Company classifies the estimated fair value of its certificates of deposit portfolio as Level 2.

Borrowings

The fair value of borrowings was estimated by discounting future cash flows using rates available for debt with similar terms and maturities and is classified by the Company as Level 2 within the fair value hierarchy.

Commitments to Extend Credit and Letters of Credit

The fair value of commitments to extend credit and letters of credit was estimated using the fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the present creditworthiness of the counter-parties. For fixed rate loan commitments, fair value also considers the difference between current levels of interest rates and the committed rates. The fair value estimates of commitments to extend credit and letters of credit are deemed immaterial.
Limitations

Fair value estimates are made at a specific point in time, based on relevant market information and information about the financial instrument. These estimates do not reflect any premium or discount that could result from offering for sale at one time the Company’s entire holdings of a particular financial instrument. Because limited markets exist for a significant portion of the Company’s financial instruments, fair value estimates are based on judgments regarding future expected loss experience, current economic conditions, risk characteristics of various financial instruments, and other factors. These estimates are subjective in nature and involve uncertainties and matters of significant judgment and, therefore, cannot be determined with precision. Changes in assumptions could significantly affect the estimates.
Fair value estimates are based on existing on and off-balance-sheet financial instruments without attempting to estimate the value of anticipated future business and the value of assets and liabilities that are not considered financial instruments. Other significant assets and liabilities that are not considered financial assets or liabilities include goodwill and intangible assets, deferred tax assets and liabilities, office properties and equipment, and bank-owned life insurance.
v3.25.4
Debt Securities Available for Sale (Tables)
12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Debt Securities, Available-for-Sale Debt securities available for sale at December 31, 2025 and 2024 are summarized as follows:
December 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Fair Value
(In thousands)
U.S. government and agency obligations$393,875 $4,595 $— $398,470 
Mortgage-backed securities and collateralized mortgage obligations732,393 1,646 (79,066)654,973 
Municipal obligations1,975 — (14)1,961 
Corporate debt securities71,976 314 (5,677)66,613 
$1,200,219 $6,555 $(84,757)$1,122,017 

December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Fair Value
(In thousands)
U.S. government and agency obligations$314,494 $810 $(602)$314,702 
Mortgage-backed securities and collateralized mortgage obligations729,488 173 (106,704)622,957 
Municipal obligations2,378 (22)2,359 
Corporate debt securities95,508 123 (9,703)85,928 
$1,141,868 $1,109 $(117,031)$1,025,946 
Investments Classified by Contractual Maturity Date The amortized cost and fair value of debt securities available for sale at December 31, 2025, by contractual final maturity, is shown below. Expected maturities may differ from contractual maturities due to prepayment or early call options exercised by the issuer.
December 31, 2025
Amortized CostFair Value
(In thousands)
One year or less$130,960 $131,384 
More than one year to five years251,648 255,013 
More than five years to ten years85,218 80,647 
$467,826 $467,044 
Mortgage-backed securities and collateralized mortgage obligations732,393 654,973 
$1,200,219 $1,122,017 
The amortized cost and fair value of debt securities held to maturity at December 31, 2025, by contractual final maturity, is shown below. Expected maturities may differ from contractual maturities due to prepayment or early call options exercised by the issuer.
December 31, 2025
Amortized CostFair Value
(In thousands)
One year or less$14,875 $14,807 
More than one year to five years10,000 9,376 
More than five years to ten years9,997 9,310 
More than ten years10,000 8,058 
44,872 41,551 
Mortgage-backed securities and collateralized mortgage obligations351,361 325,738 
$396,233 $367,289 
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value
The following tables summarize the fair value and gross unrealized losses of those securities that reported an unrealized loss at December 31, 2025 and 2024 and if the unrealized loss position was continuous for the twelve months prior to those respective dates:
December 31, 2025
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $— $— $— $— 
Mortgage-backed securities and collateralized mortgage obligations27,710 (57)456,562 (79,009)484,272 (79,066)
Municipal obligations1,536 (14)— — 1,536 (14)
Corporate debt securities3,996 (4)56,802 (5,673)60,798 (5,677)
$33,242 $(75)$513,364 $(84,682)$546,606 $(84,757)

December 31, 2024
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$126,197 $(602)$— $— $126,197 $(602)
Mortgage-backed securities and collateralized mortgage obligations93,763 (475)476,559 (106,229)570,322 (106,704)
Municipal obligations— — 1,346 (22)1,346 (22)
Corporate debt securities— — 80,805 (9,703)80,805 (9,703)
$219,960 $(1,077)$558,710 $(115,954)$778,670 $(117,031)
v3.25.4
Debt Securities Held to Maturity (Tables)
12 Months Ended
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]  
Debt Securities, Held-to-Maturity
Debt securities held to maturity at December 31, 2025 and 2024 are summarized as follows:
December 31, 2025
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Allowance for Credit LossesFair Value
(In thousands)
U.S. government and agency obligations$44,872 $— $(3,321)$— $41,551 
Mortgage-backed securities and collateralized mortgage obligations351,361 699 (26,322)— 325,738 
$396,233 $699 $(29,643)$— $367,289 

December 31, 2024
Amortized CostGross Unrealized GainsGross Unrealized (Losses)Allowance for Credit LossesFair Value
(In thousands)
U.S. government and agency obligations$44,871 $— $(5,288)$— $39,583 
Mortgage-backed securities and collateralized mortgage obligations347,969 (37,407)— 310,570 
$392,840 $$(42,695)$— $350,153 
Investments Classified by Contractual Maturity Date The amortized cost and fair value of debt securities available for sale at December 31, 2025, by contractual final maturity, is shown below. Expected maturities may differ from contractual maturities due to prepayment or early call options exercised by the issuer.
December 31, 2025
Amortized CostFair Value
(In thousands)
One year or less$130,960 $131,384 
More than one year to five years251,648 255,013 
More than five years to ten years85,218 80,647 
$467,826 $467,044 
Mortgage-backed securities and collateralized mortgage obligations732,393 654,973 
$1,200,219 $1,122,017 
The amortized cost and fair value of debt securities held to maturity at December 31, 2025, by contractual final maturity, is shown below. Expected maturities may differ from contractual maturities due to prepayment or early call options exercised by the issuer.
December 31, 2025
Amortized CostFair Value
(In thousands)
One year or less$14,875 $14,807 
More than one year to five years10,000 9,376 
More than five years to ten years9,997 9,310 
More than ten years10,000 8,058 
44,872 41,551 
Mortgage-backed securities and collateralized mortgage obligations351,361 325,738 
$396,233 $367,289 
Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value
The following tables summarize the fair value and gross unrealized losses of those securities that reported an unrealized loss at December 31, 2025 and 2024 and if the unrealized loss position was continuous for the twelve months prior to those respective dates:

December 31, 2025
Less Than 12 Months12 Months or LongerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $41,552 $(3,321)$41,552 $(3,321)
Mortgage-backed securities and collateralized mortgage obligations1,659 (1)290,237 (26,321)291,896 (26,322)
$1,659 $(1)$331,789 $(29,642)$333,448 $(29,643)

December 31, 2024
Less than 12 months12 months or longerTotal
Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)Fair ValueGross Unrealized (Losses)
(In thousands)
U.S. government and agency obligations$— $— $39,583 $(5,288)$39,583 $(5,288)
Mortgage-backed securities and collateralized mortgage obligations41,030 (605)267,756 (36,802)308,786 (37,407)
$41,030 $(605)$307,339 $(42,090)$348,369 $(42,695)
v3.25.4
Loans Receivable and Allowance for Credit Losses (Tables)
12 Months Ended
Dec. 31, 2025
Receivables [Abstract]  
Schedule of Loans Receivable
Loans receivable at December 31, 2025 and 2024 are summarized as follows:
December 31,
20252024
(In thousands)
Real estate loans:
One-to-four family$2,558,252 $2,710,937 
Multifamily1,677,613 1,460,641 
Commercial real estate2,513,260 2,339,883 
Construction469,438 473,573 
Commercial business loans 766,792 622,000 
Consumer loans:
Home equity loans and advances255,126 259,009 
Other consumer loans2,895 3,404 
Total gross loans8,243,376 7,869,447 
PCD loans10,442 11,686 
Net deferred loan costs, fees and purchased premiums and discounts 38,192 35,795 
Loans receivable$8,292,010 $7,916,928 
Schedule of Aging of Loans Receivable by Portfolio Segment
The following tables summarize the aging of loans receivable by portfolio segment, including non-accrual loans and excluding PCD loans, at December 31, 2025 and 2024:
December 31, 2025
30-59 Days60-89 Days90 Days or MoreTotal Past DueNon-accrualCurrentTotal
(In thousands)
Real estate loans:
One-to-four family$13,886 $5,652 $4,545 $24,083 $9,787 $2,534,169 $2,558,252 
Multifamily2,083 10,595 300 12,978 — 1,664,635 1,677,613 
Commercial real estate8,072 320 4,827 13,219 5,766 2,500,041 2,513,260 
Construction— — 5,923 5,923 5,923 463,515 469,438 
Commercial business loans11,990 1,408 11,005 24,403 15,281 742,389 766,792 
Consumer loans:
Home equity loans and advances566 175 1,018 1,759 1,243 253,367 255,126 
Other consumer loans— — 2,891 2,895 
Total loans$36,598 $18,153 $27,618 $82,369 $38,000 $8,161,007 $8,243,376 

December 31, 2024
30-59 Days60-89 Days90 Days or MoreTotal Past DueNon-accrualCurrentTotal
(In thousands)
Real estate loans:
One-to-four family$11,685 $6,250 $3,729 $21,664 $8,750 $2,689,273 $2,710,937 
Multifamily13,626 — — 13,626 — 1,447,015 1,460,641 
Commercial real estate4,394 632 — 5,026 2,920 2,334,857 2,339,883 
Construction6,205 — — 6,205 — 467,368 473,573 
Commercial business loans3,713 2,643 2,365 8,721 9,785 613,279 622,000 
Consumer loans:
Home equity loans and advances1,026 372 126 1,524 246 257,485 259,009 
Other consumer loans— — — 3,401 3,404 
Total loans$40,649 $9,900 $6,220 56,769 $21,701 $7,812,678 $7,869,447 
Schedule of Loans Receivable by Portfolio Segment and Impairment Method
The following tables summarize loans receivable (including PCD loans) and allowance for credit losses by portfolio segment and impairment method at December 31, 2025 and 2024:
December 31, 2025
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial Business Home Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Allowance for credit losses:
Individually analyzed loans$— $— $— $— $— $— $— $— 
Collectively analyzed loans13,280 10,647 18,563 6,617 16,753 1,289 67,155 
Loans acquired with deteriorated credit quality — 29 — 14 — — 46 
Total$13,283 $10,647 $18,592 $6,617 $16,767 $1,289 $$67,201 
Total loans:
Individually analyzed loans$10,988 $300 $5,492 $5,923 $13,658 $1,262 $— $37,623 
Collectively analyzed loans2,547,264 1,677,313 2,507,768 463,515 753,134 253,864 2,895 8,205,753 
Loans acquired with deteriorated credit quality 1,267 — 7,891 — 1,284 — — 10,442 
Total loans$2,559,519 $1,677,613 $2,521,151 $469,438 $768,076 $255,126 $2,895 $8,253,818 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

December 31, 2024
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial Business Home Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Allowance for credit losses:
Individually analyzed loans$— $— $— $— $— $— $— $— 
Collectively analyzed loans13,169 9,542 15,940 6,703 13,112 1,452 59,925 
Loans acquired with deteriorated credit quality— 29 — — — — 33 
Total$13,173 $9,542 $15,969 $6,703 $13,112 $1,452 $$59,958 
Total loans:
Individually analyzed loans$9,167 $5,743 $7,517 $— $15,184 $331 $— $37,942 
Collectively analyzed loans2,701,770 1,454,898 2,332,366 473,573 606,816 258,678 3,404 7,831,505 
Loans acquired with deteriorated credit quality1,815 — 9,425 — 300 146 — 11,686 
Total loans$2,712,752 $1,460,641 $2,349,308 $473,573 $622,300 $259,155 $3,404 $7,881,133 
The activity in the allowance for credit losses on loans for the years ended December 31, 2025, 2024 and 2023 are as follows:

Years Ended December 31,
202520242023
(In thousands)
Balance at beginning of period$59,958 $55,096 $52,803 
Initial allowance related to PCD loans3,202 — — 
Provision for credit losses9,822 14,451 4,787 
Recoveries1,443 609 1,000 
Charge-offs(7,224)(10,198)(3,494)
Balance at end of period$67,201 $59,958 $55,096 
The activity in the allowance for credit losses by portfolio segment for the years ended December 31, 2025, 2024, and 2023, are as follows:
For the Year Ended December 31, 2025
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial BusinessHome Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Balance at beginning of period$13,173 $9,542 $15,969 $6,703 $13,112 $1,452 $$59,958 
Initial allowance related to PCD loans— — — — 3,202 — — 3,202 
Provision for (reversal of) credit losses37 1,105 2,741 (36)6,071 (253)157 9,822 
Recoveries73 — 1,269 90 1,443 
Charge-offs— — (119)(53)(6,887)— (165)(7,224)
Balance at end of period$13,283 $10,647 $18,592 $6,617 $16,767 $1,289 $$67,201 

For the Year Ended December 31, 2024
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial BusinessHome Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Balance at beginning of period$13,017 $8,742 $15,757 $7,758 $7,923 $1,892 $$55,096 
Provision for (reversal of) credit losses147 800 296 (1,059)14,467 (459)259 14,451 
Recoveries11 — 36 536 19 609 
Charge-offs(2)— (120)— (9,814)— (262)(10,198)
Balance at end of period$13,173 $9,542 $15,969 $6,703 $13,112 $1,452 $$59,958 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

For the Year Ended December 31, 2023
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial BusinessHome Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Balance at beginning of period$11,802 $7,877 $18,111 $6,425 $6,897 $1,681 $10 $52,803 
Provision for (reversal of) credit losses1,783 865 (2,225)1,333 2,765 160 106 4,787 
Recoveries17 — 21 — 879 77 1,000 
Charge-offs(585)— (150)— (2,618)(26)(115)(3,494)
Balance at end of period$13,017 $8,742 $15,757 $7,758 $7,923 $1,892 $$55,096 
The following tables present individually analyzed loans by segment, excluding PCD loans, at December 31, 2025 and 2024:
At December 31, 2025
Recorded InvestmentUnpaid Principal BalanceSpecific Allowance
(In thousands)
With no allowance recorded:
Real estate loans:
One-to-four family$10,988 $10,992 $— 
Multifamily300 300 — 
Commercial real estate5,492 5,618 — 
Construction5,923 5,975 — 
Commercial business loans13,658 21,112 — 
Consumer loans:
Home equity loans and advances1,262 1,262 — 
37,623 45,259 — 
With a specific allowance recorded:
— — — 
Total:
Real estate loans:
One-to-four family10,988 10,992 — 
Multifamily300 300 — 
Commercial real estate5,492 5,618 — 
Construction5,923 5,975 — 
Commercial business loans13,658 21,112 — 
Consumer loans:
Home equity loans and advances1,262 1,262 — 
Total loans$37,623 $45,259 $— 
At December 31, 2024
Recorded InvestmentUnpaid Principal BalanceSpecific Allowance
(In thousands)
With no allowance recorded:
Real estate loans:
One-to-four family$9,167 $9,216 $— 
Multifamily5,743 5,743 — 
Commercial real estate7,517 8,089 — 
Commercial business loans15,184 19,553 — 
Consumer loans:
Home equity loans and advances331 331 — 
37,942 42,932 — 
With a specific allowance recorded:
— — — 
Total:
Real estate loans:
One-to-four family9,167 9,216 — 
Multifamily5,743 5,743 — 
Commercial real estate7,517 8,089 — 
Commercial business loans15,184 19,553 — 
Consumer loans:
Home equity loans and advances331 331 — 
Total loans$37,942 $42,932 $— 
The following table presents interest income recognized for individually analyzed loans by loan segment, excluding PCD loans, for the years ended December 31, 2025, 2024 and 2023:
For the Years Ended December 31,
202520242023
Average Recorded InvestmentInterest Income RecognizedAverage Recorded InvestmentInterest Income RecognizedAverage Recorded InvestmentInterest Income Recognized
                                           (In thousands)
Real estate loans:
One-to-four family$10,439 $$4,515 $16 $4,328 $196 
Multifamily2,024 — 2,383 420 19 
Commercial real estate6,445 57 9,818 204 16,234 694 
Construction4,734 — — — — — 
Commercial business loans10,924 36 11,761 100 6,134 331 
Consumer loans:
Home equity loans and advances735 245 646 42 
Totals$35,301 $101 $28,722 $324 $27,762 $1,282 
Schedule of Loan Modifications
The following tables presents the modifications of loans to borrowers experiencing financial difficulty that were modified during the years ended December 31, 2025, 2024, and 2023:

 For the Year Ended December 31, 2025
Amortized CostInterest Rate ReductionTerm ExtensionCombination of
Term Extension
and Interest
Rate Reduction
% of Total Class of Loans Receivable
(Dollars in thousands)
Commercial real estate$12,385 $— $9,395 $2,990 0.49 %
Commercial business11,771 673 7,000 4,098 1.54 
Total loans$24,156 $673 $16,395 $7,088 0.29 %
(7)     Loans Receivable and Allowance for Credit Losses (continued)

 For the Year Ended December 31, 2024
Amortized CostInterest Rate ReductionTerm Extension% of Total Class of Loans Receivable
(Dollars in thousands)
Commercial real estate$1,536 $1,536 $— 0.07 %
Commercial business5,630 — 5,630 0.91 
Total loans$7,166 $1,536 $5,630 0.09 %
 For the Year Ended December 31, 2023
Amortized CostTerm ExtensionCombination of Term Extension, Interest Rate Reduction and Principal Forgiveness% of Total Class of Loans Receivable
(Dollars in thousands)
Commercial real estate$1,038 $1,038 $— — %
Construction2,317 2,317 — 0.50 
Commercial business5,240 240 5,000 1.00 
Total loans$8,595 $3,595 $5,000 0.10 %

The following table describes the types of modifications of loans to borrowers experiencing financial difficulty during the years ended December 31, 2025, 2024, and 2023:
                                                                        For the Year Ended December 31, 2025
Type of Modifications
Commercial real estate
Term extensions ranging between 15 and 17 months
Commercial business
Interest rate reduction and/or term extensions ranging between 12 and 60 months
                                                                        For the Year Ended December 31, 2024
Type of Modifications
Commercial real estateInterest rate reduction
Commercial business
Term extensions ranging between 15 and 60 months
                                                                        For the Year Ended December 31, 2023
Type of Modifications
Commercial real estate
12 month term extension
Construction
12 month term extension
Commercial business
12 month term extension, interest rate reduction, and/or principal forgiveness
The following tables presents the aging analysis of modifications of loans to borrowers experiencing financial difficulty at December 31, 2025, 2024, and 2023:

December 31, 2025
Current30-59 Days60-89 Days90 Days or MoreNon-accrualTotal
(In thousands)
Commercial real estate$12,328 $— $— $— $— $12,328 
Commercial business10,488 — — — 1,308 11,796 
Total loans$22,816 $— $— $— $1,308 $24,124 
December 31, 2024
Current30-59 Days60-89 Days90 Days or MoreNon-accrualTotal
(In thousands)
Commercial real estate$1,520 $— $— $— $1,029 $2,549 
Commercial business1,759 39 — — 2,050 3,848 
Total loans$3,279 $39 $— $— $3,079 $6,397 
December 31, 2023
Current30-59 Days60-89 Days90 Days or MoreNon-accrualTotal
(In thousands)
Commercial real estate$1,035 $— $— $— $— $1,035 
Construction 2,317 — — — — 2,317 
Commercial business— — 4,917 — 237 5,154 
Total loans$3,352 $— $4,917 $— $237 $8,506 
Schedule of Loans Individually Evaluated for Impairment
The following tables summarize loans receivable (including PCD loans) and allowance for credit losses by portfolio segment and impairment method at December 31, 2025 and 2024:
December 31, 2025
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial Business Home Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Allowance for credit losses:
Individually analyzed loans$— $— $— $— $— $— $— $— 
Collectively analyzed loans13,280 10,647 18,563 6,617 16,753 1,289 67,155 
Loans acquired with deteriorated credit quality — 29 — 14 — — 46 
Total$13,283 $10,647 $18,592 $6,617 $16,767 $1,289 $$67,201 
Total loans:
Individually analyzed loans$10,988 $300 $5,492 $5,923 $13,658 $1,262 $— $37,623 
Collectively analyzed loans2,547,264 1,677,313 2,507,768 463,515 753,134 253,864 2,895 8,205,753 
Loans acquired with deteriorated credit quality 1,267 — 7,891 — 1,284 — — 10,442 
Total loans$2,559,519 $1,677,613 $2,521,151 $469,438 $768,076 $255,126 $2,895 $8,253,818 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

December 31, 2024
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial Business Home Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Allowance for credit losses:
Individually analyzed loans$— $— $— $— $— $— $— $— 
Collectively analyzed loans13,169 9,542 15,940 6,703 13,112 1,452 59,925 
Loans acquired with deteriorated credit quality— 29 — — — — 33 
Total$13,173 $9,542 $15,969 $6,703 $13,112 $1,452 $$59,958 
Total loans:
Individually analyzed loans$9,167 $5,743 $7,517 $— $15,184 $331 $— $37,942 
Collectively analyzed loans2,701,770 1,454,898 2,332,366 473,573 606,816 258,678 3,404 7,831,505 
Loans acquired with deteriorated credit quality1,815 — 9,425 — 300 146 — 11,686 
Total loans$2,712,752 $1,460,641 $2,349,308 $473,573 $622,300 $259,155 $3,404 $7,881,133 
The activity in the allowance for credit losses on loans for the years ended December 31, 2025, 2024 and 2023 are as follows:

Years Ended December 31,
202520242023
(In thousands)
Balance at beginning of period$59,958 $55,096 $52,803 
Initial allowance related to PCD loans3,202 — — 
Provision for credit losses9,822 14,451 4,787 
Recoveries1,443 609 1,000 
Charge-offs(7,224)(10,198)(3,494)
Balance at end of period$67,201 $59,958 $55,096 
The activity in the allowance for credit losses by portfolio segment for the years ended December 31, 2025, 2024, and 2023, are as follows:
For the Year Ended December 31, 2025
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial BusinessHome Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Balance at beginning of period$13,173 $9,542 $15,969 $6,703 $13,112 $1,452 $$59,958 
Initial allowance related to PCD loans— — — — 3,202 — — 3,202 
Provision for (reversal of) credit losses37 1,105 2,741 (36)6,071 (253)157 9,822 
Recoveries73 — 1,269 90 1,443 
Charge-offs— — (119)(53)(6,887)— (165)(7,224)
Balance at end of period$13,283 $10,647 $18,592 $6,617 $16,767 $1,289 $$67,201 

For the Year Ended December 31, 2024
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial BusinessHome Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Balance at beginning of period$13,017 $8,742 $15,757 $7,758 $7,923 $1,892 $$55,096 
Provision for (reversal of) credit losses147 800 296 (1,059)14,467 (459)259 14,451 
Recoveries11 — 36 536 19 609 
Charge-offs(2)— (120)— (9,814)— (262)(10,198)
Balance at end of period$13,173 $9,542 $15,969 $6,703 $13,112 $1,452 $$59,958 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

For the Year Ended December 31, 2023
One-to-Four FamilyMultifamilyCommercial Real EstateConstructionCommercial BusinessHome Equity Loans and AdvancesOther Consumer LoansTotal
(In thousands)
Balance at beginning of period$11,802 $7,877 $18,111 $6,425 $6,897 $1,681 $10 $52,803 
Provision for (reversal of) credit losses1,783 865 (2,225)1,333 2,765 160 106 4,787 
Recoveries17 — 21 — 879 77 1,000 
Charge-offs(585)— (150)— (2,618)(26)(115)(3,494)
Balance at end of period$13,017 $8,742 $15,757 $7,758 $7,923 $1,892 $$55,096 
The following tables present individually analyzed loans by segment, excluding PCD loans, at December 31, 2025 and 2024:
At December 31, 2025
Recorded InvestmentUnpaid Principal BalanceSpecific Allowance
(In thousands)
With no allowance recorded:
Real estate loans:
One-to-four family$10,988 $10,992 $— 
Multifamily300 300 — 
Commercial real estate5,492 5,618 — 
Construction5,923 5,975 — 
Commercial business loans13,658 21,112 — 
Consumer loans:
Home equity loans and advances1,262 1,262 — 
37,623 45,259 — 
With a specific allowance recorded:
— — — 
Total:
Real estate loans:
One-to-four family10,988 10,992 — 
Multifamily300 300 — 
Commercial real estate5,492 5,618 — 
Construction5,923 5,975 — 
Commercial business loans13,658 21,112 — 
Consumer loans:
Home equity loans and advances1,262 1,262 — 
Total loans$37,623 $45,259 $— 
At December 31, 2024
Recorded InvestmentUnpaid Principal BalanceSpecific Allowance
(In thousands)
With no allowance recorded:
Real estate loans:
One-to-four family$9,167 $9,216 $— 
Multifamily5,743 5,743 — 
Commercial real estate7,517 8,089 — 
Commercial business loans15,184 19,553 — 
Consumer loans:
Home equity loans and advances331 331 — 
37,942 42,932 — 
With a specific allowance recorded:
— — — 
Total:
Real estate loans:
One-to-four family9,167 9,216 — 
Multifamily5,743 5,743 — 
Commercial real estate7,517 8,089 — 
Commercial business loans15,184 19,553 — 
Consumer loans:
Home equity loans and advances331 331 — 
Total loans$37,942 $42,932 $— 
The following table presents interest income recognized for individually analyzed loans by loan segment, excluding PCD loans, for the years ended December 31, 2025, 2024 and 2023:
For the Years Ended December 31,
202520242023
Average Recorded InvestmentInterest Income RecognizedAverage Recorded InvestmentInterest Income RecognizedAverage Recorded InvestmentInterest Income Recognized
                                           (In thousands)
Real estate loans:
One-to-four family$10,439 $$4,515 $16 $4,328 $196 
Multifamily2,024 — 2,383 420 19 
Commercial real estate6,445 57 9,818 204 16,234 694 
Construction4,734 — — — — — 
Commercial business loans10,924 36 11,761 100 6,134 331 
Consumer loans:
Home equity loans and advances735 245 646 42 
Totals$35,301 $101 $28,722 $324 $27,762 $1,282 
Schedule of Loans Receivable by Credit Quality Risk
The following table summarizes the Company's loans by year of origination and internally assigned credit risk rating, excluding PCD loans, at December 31, 2025 and 2024:
Loans by Year of Origination at December 31, 2025
20252024202320222021PriorRevolving LoansRevolving Loans to Term LoansTotal
(In thousands)
One-to-Four Family
Pass$93,590 $104,411 $148,597 $705,476 $687,522 $807,680 $— $— $2,547,276 
Special mention— — — — — — — — — 
Substandard— 1,099 1,841 3,024 805 4,207 — — 10,976 
Total One-to-Four Family93,590 105,510 150,438 708,500 688,327 811,887 — — 2,558,252 
Gross charge-offs— — — — — — — — — 
Multifamily
Pass233,695 32,267 135,839 345,763 316,250 562,566 — — 1,626,380 
Special mention— — — — 40,638 — — — 40,638 
Substandard— — — 10,595 — — — — 10,595 
Total Multifamily233,695 32,267 135,839 356,358 356,888 562,566 — — 1,677,613 
Gross charge-offs— — — — — — — — — 
Commercial Real Estate
Pass410,896 113,417 173,838 459,278 357,327 923,667 — — 2,438,423 
Special mention— — — 7,007 — 9,222 — — 16,229 
Substandard3,692 — 350 12,258 1,486 40,822 — — 58,608 
Total Commercial Real Estate414,588 113,417 174,188 478,543 358,813 973,711 — — 2,513,260 
Gross charge-offs— — — 77 42 — — — 119 
Construction
Pass128,667 118,823 146,996 67,146 — — — — 461,632 
Special mention— — — — — — — — — 
Substandard— — 1,883 5,923 — — — — 7,806 
Total Construction128,667 118,823 148,879 73,069 — — — — 469,438 
Gross charge-offs$— $— $— $53 $— $— $— $— $53 
(7)     Loans Receivable and Allowance for Credit Losses (continued)


Loans by Year of Origination at December 31, 2025
20252024202320222021PriorRevolving LoansRevolving Loans to Term LoansTotal
(In thousands)
Commercial Business
Pass$111,377 $142,106 $86,839 $58,117 $24,846 $41,814 $266,563 $— $731,662 
Special mention— — — — — 44 100 — 144 
Substandard1,512 1,662 1,263 2,106 582 7,130 20,731 — 34,986 
Doubtful— — — — — — — — — 
Total Commercial Business112,889 143,768 88,102 60,223 25,428 48,988 287,394 — 766,792 
Gross charge-offs295 634 926 2,097 753 2,182 — — 6,887 
Home Equity Loans and Advances
Pass19,850 13,049 11,818 15,368 13,334 71,446 37,417 71,582 253,864 
Special mention— — — — — — — — — 
Substandard— — 49 248 — 597 368 — 1,262 
Total Home Equity Loans and Advances19,850 13,049 11,867 15,616 13,334 72,043 37,785 71,582 255,126 
Gross charge-offs— — — — — — — — — 
Other Consumer Loans
Pass2,381 37 49 24 — 50 354 — 2,895 
Special mention— — — — — — — — — 
Substandard— — — — — — — — — 
Total Other Consumer Loans2,381 37 49 24 — 50 354 — 2,895 
Gross charge-offs13 58 40 43 10 — — 165 
Total Loans1,005,660 526,871 709,362 1,692,333 1,442,790 2,469,245 325,533 71,582 8,243,376 
Total gross charge-offs$296 $647 $984 $2,267 $838 $2,192 $— $— $7,224 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

Loans by Year of Origination at December 31, 2024
20242023202220212020PriorRevolving LoansRevolving Loans to Term LoansTotal
(In thousands)
One-to-Four Family
Pass$112,748 $154,862 $755,791 $745,505 $250,819 $681,085 $— $— $2,700,810 
Special mention— — — — — — — — — 
Substandard— 1,399 2,115 1,623 598 4,392 — — 10,127 
Total One-to-Four family112,748 156,261 757,906 747,128 251,417 685,477 — — 2,710,937 
Gross charge-offs— — — — — — — 
Multifamily
Pass35,835 131,728 320,011 338,781 169,959 446,956 — — 1,443,270 
Special mention— — — — — — — — — 
Substandard— — 5,743 9,272 — 2,356 — — 17,371 
Total Multifamily35,835 131,728 325,754 348,053 169,959 449,312 — — 1,460,641 
Gross charge-offs— — — — — — — — — 
Commercial Real Estate
Pass122,219 189,692 454,357 370,684 153,058 920,255 — — 2,210,265 
Special mention— — 994 — 2,776 33,737 — — 37,507 
Substandard— — 14,938 993 3,696 72,484 — — 92,111 
Total Commercial Real Estate122,219 189,692 470,289 371,677 159,530 1,026,476 — — 2,339,883 
Gross charge-offs— — — — — 120 — — 120 
Construction
Pass64,631 163,466 198,938 35,443 — — — — 462,478 
Special mention— — — — — — — — — 
Substandard— — 11,095 — — — — — 11,095 
Total Construction64,631 163,466 210,033 35,443 — — — — 473,573 
Gross charge-offs$— $— $— $— $— $— $— $— $— 
(7)     Loans Receivable and Allowance for Credit Losses (continued)

Loans by Year of Origination at December 31, 2024
20242023202220212020PriorRevolving LoansRevolving Loans to Term LoansTotal
(In thousands)
Commercial Business
Pass$105,272 $57,038 $50,164 $28,995 $22,253 $38,997 $281,289 $— $584,008 
Special mention— — 108 — 294 106 2,371 — 2,879 
Substandard— 183 1,366 486 1,100 6,319 25,659 — 35,113 
Total Commercial Business105,272 57,221 51,638 29,481 23,647 45,422 309,319 — 622,000 
Gross charge-offs— — 167 195 — 3,760 5,692 — 9,814 
Home Equity Loans and Advances
Pass14,999 15,169 17,655 15,674 8,974 76,210 41,098 68,899 258,678 
Special mention— — — — — — — — — 
Substandard— 50 — — — 219 62 — 331 
Total Home Equity Loans and Advances14,999 15,219 17,655 15,674 8,974 76,429 41,160 68,899 259,009 
Gross charge-offs— — — — — — — — — 
Other Consumer Loans
Pass2,859 85 85 — 63 304 — 3,404 
Special mention— — — — — — — — — 
Substandard— — — — — — — — — 
Total Other Consumer Loans2,859 85 85 — 63 304 — 3,404 
Gross charge-offs— 74 121 65 — — — 262 
Total Loans458,563 713,672 1,833,360 1,547,464 613,527 2,283,179 350,783 68,899 7,869,447 
Total gross charge-offs$— $74 $288 $260 $— $3,884 $5,692 $— $10,198 
v3.25.4
Office Properties and Equipment, net (Tables)
12 Months Ended
Dec. 31, 2025
Property, Plant and Equipment [Abstract]  
Schedule of Office Properties and Equipment
Office properties and equipment less accumulated depreciation at December 31, 2025 and 2024 are summarized as follows:
December 31,
20252024
(In thousands)
Land$14,290 $14,623 
Buildings30,209 29,910 
Land and building improvements53,795 49,737 
Leasehold improvements30,284 28,258 
Furniture and equipment40,666 37,787 
169,244 160,315 
Less accumulated depreciation and amortization(86,259)(78,543)
Total office properties and equipment, net$82,985 $81,772 
v3.25.4
Leases (Tables)
12 Months Ended
Dec. 31, 2025
Leases [Abstract]  
Lessee, Operating Lease, Liability, Maturity
The following table summarizes lease payment obligations for each of the next five years and thereafter as follows:

Lease Payment Obligations at December 31,
20252024
(In thousands)
One year or less$4,658 $4,666 
After one year to two years3,850 4,232 
After two years to three years3,283 3,272 
After three years to four years2,296 2,809 
After four years to five years1,149 1,899 
Thereafter2,953 2,742 
Total undiscounted cash flows18,189 19,620 
Discount on cash flows(1,666)(1,796)
Total lease liability$16,523 $17,824 
v3.25.4
Goodwill and Intangible Assets (Tables)
12 Months Ended
Dec. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill and Intangible Assets
Intangible assets at December 31, 2025 and 2024 are summarized as follows:
December 31,
20252024
(In thousands)
Goodwill$110,715 $110,715 
Core deposit intangibles6,946 8,964 
Other intangible assets1,248 — 
Mortgage servicing rights1,393 1,329 
$120,302 $121,008 
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
Scheduled amortization of core deposit intangibles for each of the next five years and thereafter is as follows:
Year Ended December 31,Core Deposit Intangible Amortization
(In thousands)
2026$1,829 
20271,615 
20281,361 
2029994 
2030657 
Thereafter490 
Total$6,946 
v3.25.4
Deposits (Tables)
12 Months Ended
Dec. 31, 2025
Deposits [Abstract]  
Schedule of Deposits
Deposits at December 31, 2025 and 2024 are summarized as follows:
December 31,
20252024
BalanceWeighted Average RateBalanceWeighted Average Rate
(Dollars in thousands)
Non-interest-bearing demand$1,517,399 — %$1,438,030 — %
Interest-bearing demand1,985,871 1.99 2,021,312 2.19 
Money market accounts1,465,028 2.59 1,241,691 2.82 
Savings and club deposits623,444 0.47 652,501 0.75 
Certificates of deposit2,852,337 3.80 2,742,615 4.24 
          Total deposits$8,444,079 2.23 %$8,096,149 2.47 %
Schedule of Certificate Accounts by Maturity
Scheduled maturities of certificates of deposit accounts at December 31, 2025 and 2024 are summarized as follows:
December 31,
20252024
(In thousands)
One year or less$2,468,641 $2,422,249 
After one year to two years263,211 281,961 
After two years to three years86,017 21,909 
After three years to four years14,037 8,193 
After four years20,431 8,303 
$2,852,337 $2,742,615 

Interest expense on deposits for the years ended December 31, 2025, 2024, and 2023 are summarized as follows:
Years Ended December 31,
202520242023
(In thousands)
Demand (including money market accounts)$81,803 $88,337 $62,070 
Savings and club deposits4,015 5,130 2,231 
Certificates of deposit111,556 108,916 60,861 
$197,374 $202,383 $125,162 
v3.25.4
Borrowings (Tables)
12 Months Ended
Dec. 31, 2025
Debt Disclosure [Abstract]  
Schedule of Borrowed Funds
Borrowings at December 31, 2025 and 2024 are summarized as follows:
December 31,
2025202420252024
BalanceWeighted Average Interest Rate
(In thousands)
FHLB advances$1,176,415 $1,073,564 4.17 %4.42 %
Junior subordinated debentures7,057 7,036 6.92 7.56 
$1,183,472 $1,080,600 4.19 %4.44 %
Schedule of Borrowed Funds Contractual Maturity
Scheduled maturities of FHLB advances are summarized as follows:
Year Ended December 31, 2025
(In thousands)
One year or less$525,726 
After one year to two years225,139 
After two years to three years180,550 
After three years to four years225,000 
After four years20,000 
Total FHLB advances$1,176,415 
v3.25.4
Stockholders' Equity (Tables)
12 Months Ended
Dec. 31, 2025
Equity [Abstract]  
Public Utilities General Disclosures
The following tables presents the Company's and the Columbia Bank's actual capital amounts and ratios at December 31, 2025 and 2024 compared to the Federal Reserve Bank minimum capital adequacy requirements and the Federal Reserve Bank requirements for classification as a well-capitalized institution:
(13)    Stockholders' Equity (continued)

Regulatory Capital (continued)
ActualMinimum Capital Adequacy RequirementsMinimum Capital Adequacy Requirements With Capital Conservation BufferTo Be Well Capitalized Under Prompt Corrective Action Provisions
AmountRatioAmountRatioAmountRatioAmountRatio
Company(In thousands, except ratio data)
At December 31, 2025:
Total capital (to risk-weighted assets)$1,196,057 14.92 %$641,506 8.00 %$841,976 10.50 %N/AN/A
Tier 1 capital (to risk-weighted assets)1,125,002 14.03 481,129 6.00 681,600 8.50 N/AN/A
Common equity tier 1 capital (to risk-weighted assets)1,117,785 13.94 360,847 4.50 561,317 7.00 N/AN/A
Tier 1 capital (to adjusted total assets)1,125,002 10.27 438,061 4.00 438,061 4.00 N/AN/A
At December 31, 2024:
Total capital (to risk-weighted assets)$1,131,159 14.20 %$637,077 8.00 %$836,164 10.50 %N/AN/A
Tier 1 capital (to risk-weighted assets)1,067,445 13.40 477,808 6.00 676,895 8.50 N/AN/A
Common equity tier 1 capital (to risk-weighted assets)1,060,228 13.31 358,356 4.50 557,443 7.00 N/AN/A
Tier 1 capital (to adjusted total assets)1,067,445 10.02 426,319 4.00 426,319 4.00 N/AN/A
 Columbia Bank
At December 31, 2025:
Total capital (to risk-weighted assets)$1,129,574 14.09 %$641,534 8.00 %$842,014 10.50 %$801,918 10.00 %
Tier 1 capital (to risk-weighted assets)1,058,519 13.20 481,151 6.00 681,630 8.50 641,534 8.00 
Common equity tier 1 capital (to risk-weighted assets)1,058,519 13.20 360,863 4.50 561,342 7.00 521,247 6.50 
Tier 1 capital (to adjusted total assets)1,058,519 9.67 438,029 4.00 438,029 4.00 547,536 5.00 
At December 31, 2024:
Total capital (to risk-weighted assets)$1,090,717 14.41 %$605,734 8.00 %$795,025 10.50 %$757,167 10.00 %
Tier 1 capital (to risk-weighted assets)1,027,003 13.56 454,300 6.00 643,592 8.50 605,734 8.00 
Common equity tier 1 capital (to risk-weighted assets)1,027,003 13.56 340,725 4.50 530,017 7.00 492,159 6.50 
Tier 1 capital (to adjusted total assets)1,027,003 9.64 425,935 4.00 425,935 4.00 532,419 5.00 
v3.25.4
Employee Benefit Plans (Tables)
12 Months Ended
Dec. 31, 2025
Retirement Benefits [Abstract]  
Changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status of Plan
The following table sets forth information regarding the Pension Plan, RIM, Post-retirement Plan and Split-Dollar Life Insurance Plans at December 31, 2025 and 2024:

At December 31,
20252024202520242025202420252024
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
(In thousands)
Change in benefit obligation:
Benefit obligation at beginning of year$246,890 $255,868 $12,812 $13,550 $22,271 $21,148 $15,791 $16,957 
Service cost3,786 4,504 209 245 206 269 229 229 
Interest cost13,092 12,784 675 649 1,148 1,118 864 834 
Actuarial loss (gain) 7,396 (15,168)293 (1,287)(369)(2,150)1,203 (2,102)
Benefits paid(16,225)(11,098)(455)(345)(1,071)(617)— (127)
Impact of plan merger (1)
— — — — — 2,503 — — 
Benefit obligation at end of year254,939 246,890 13,534 12,812 22,185 22,271 18,087 15,791 
Change in plan assets:
Fair value of plan assets at beginning of year477,763 453,559 — — — — — — 
Actuarial return gain on plan assets59,150 35,302 — — — — — — 
Employer contributions— — 455 345 1,071 617 — 127 
Benefits paid(16,225)(11,098)(455)(345)(1,071)(617)— (127)
Impact of plan merger (1)
— — — — — — — — 
Fair value of plan assets at end of year520,688 477,763 — — — — — — 
Funded status at end of year$265,749 $230,873 $(13,534)$(12,812)$(22,185)$(22,271)$(18,087)$(15,791)
(1) During 2024, the RSI Post-retirement Plan was merged into the Columbia Bank Post-retirement Plan.
Schedule of Amounts Recognized in Other Comprehensive Income (Loss)
The components of accumulated other comprehensive income related to the Pension Plan, RIM Plan, and Post-retirement Plan and Split-Dollar Life Insurance Plan on a pre-tax basis, at December 31, 2025, 2024, and 2023, are summarized in the following table:
At December 31,
20252024
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life InsurancePension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
(In thousands)
Unrecognized prior service costs$— $— $— $133 $— $— $— $183 
Unrecognized net actuarial loss (income)23,672 998 (2,207)(794)40,412 704 (1,835)(2,086)
Total accumulated other comprehensive loss (income)$23,672 $998 $(2,207)$(661)$40,412 $704 $(1,835)$(1,903)

At December 31, 2023
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
(In thousands)
Unrecognized prior service costs$— $— $— $238 
Unrecognized net actuarial loss59,463 2,102 787 16 
Total accumulated other comprehensive loss$59,463 $2,102 $787 $254 
The weighted average actuarial assumptions used in the plan determinations at and for the years ended December 31, 2025, 2024, and 2023 were as follows:
At and For the Year Ended December 31, 2025
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
Weighted average assumptions used to determine benefit obligation:
Discount rate5.65 %5.45 %5.49 %5.74 %
Rate of compensation increase 4.50 4.50 N/A4.50 
Weighted average assumptions used to determine net periodic benefit cost:
Discount Rates:
Benefit obligation5.76 %5.67 %5.66 %5.81 %
Remeasurement rate5.66 N/AN/AN/A
Service cost5.89 5.77 5.88 5.96 
Remeasurement rate5.89 N/AN/AN/A
Interest cost5.47 5.40 5.36 5.56 
Remeasurement rate5.21 N/AN/AN/A
Expected rate of return on plan assets7.30 N/AN/AN/A
Remeasurement rateN/AN/AN/AN/A
Rate of compensation increase 4.50 4.50 N/A4.50 
At and For the Year Ended December 31, 2024
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
Weighted average assumptions used to determine benefit obligation:
Discount rate5.76 %5.67 %5.66 %5.81 %
Rate of compensation increase 4.50 4.50 N/A4.50 
Weighted average assumptions used to determine net periodic benefit cost:
Discount Rates:
Benefit obligation5.07 %5.01 %4.96 %5.11 %
Remeasurement rate5.51 N/AN/AN/A
Service cost5.16 5.09 5.79 5.23 
Remeasurement rate5.60 N/AN/AN/A
Interest cost4.96 4.89 4.87 4.99 
Remeasurement rate5.37 N/AN/AN/A
Expected rate of return on plan assets7.25 N/AN/AN/A
Remeasurement rateN/AN/AN/AN/A
Rate of compensation increase 4.50 4.50 N/A4.50 
(14)    Employee Benefit Plans (continued)

Pension Plan, Retirement Income Maintenance Plan (the "RIM Plan") Post-retirement Plan, and Split-Dollar Life Insurance Plans (cont'd)

At and For the Year Ended December 31, 2023
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
Weighted average assumptions used to determine benefit obligation:
Discount rate5.07 %5.01 %4.96 %5.11 %
Rate of compensation increase 4.50 4.50 N/A4.50 
Weighted average assumptions used to determine net periodic benefit cost:
Discount Rates:
Benefit obligation5.26 %5.21 %5.18 %5.31 %
Remeasurement rate5.19 N/AN/AN/A
Service cost5.36 5.28 5.30 5.41 
Remeasurement rate5.26 N/AN/AN/A
Interest cost5.14 5.10 5.07 5.19 
Remeasurement rate5.16 N/AN/AN/A
Expected rate of return on plan assets7.50 N/AN/AN/A
Remeasurement rate7.50 N/AN/AN/A
Rate of compensation increase 4.50 3.75 N/A3.75 
The weighted average actuarial assumptions used in the assumed determinations at and for the year ended 2023 were as follows:
At or For the Year Ended December 31, 2023
Pension Plan
Post-retirement Plan
Weighted average assumptions used to determine benefit obligation:
Discount rate— %5.16 %
Rate of compensation increase N/AN/A
Weighted average assumptions used to determine net periodic benefit cost:
Discount Rates:
Benefit obligation5.24 %5.16 %
Expected rate of return on plan assets7.00 %N/A
Schedule of Net Benefit Costs
Net periodic (income) benefit cost for the Pension Plan, RIM Plan, Post-retirement Plan and Split-Dollar Life Insurance plan benefits for the years ended December 31, 2025 and 2024, and 2023, includes the following components:

For the Year Ended December 31, 2025
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance Affected Line Item in the Consolidated Statements of Income
(In thousands)
Service cost$3,786 $209 $206 $229 Compensation and employee benefits
Interest cost13,092 675 1,148 864 Other non-interest expense
Expected return on plan assets(35,014)— — — Other non-interest expense
Amortization:
Prior service cost— — — 50 Other non-interest expense
Net (income)— — — (89)Other non-interest expense
Net periodic (income) benefit cost $(18,136)$884 $1,354 $1,054 
(14)    Employee Benefit Plans (continued)

Pension Plan, Retirement Income Maintenance Plan (the "RIM Plan") Post-retirement Plan, and Split-Dollar Life Insurance Plans (cont'd)
For the Year Ended December 31, 2024
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance Affected Line Item in the Consolidated Statements of Income
(In thousands)
Service cost$4,504 $245 $269 $229 Compensation and employee benefits
Interest cost12,784 649 1,118 834 Other non-interest expense
Expected return on plan assets(32,701)— — — Other non-interest expense
Amortization:
Prior service cost— — — 56 Other non-interest expense
Net loss (income)1,283 110 (22)— Other non-interest expense
Net periodic (income) benefit cost $(14,130)$1,004 $1,365 $1,119 

For the Year Ended December 31, 2023
Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance Affected Line Item in the Consolidated Statements of Income
(In thousands)
Service cost$4,679 $277 $215 $277 Compensation and employee benefits
Interest cost11,637 632 970 818 Other non-interest expense
Expected return on plan assets(30,771)— — — Other non-interest expense
Amortization:
Prior service cost— — — 56 Other non-interest expense
Net loss796 57 — — Other non-interest expense
Net periodic (income) benefit cost $(13,659)$966 $1,185 $1,151 
Net periodic (income) benefit cost for the RSI Pension Plan and RSI Post-retirement Plan for the year ended December 31, 2023 includes the following components:

For the Year Ended
December 31, 2023
Pension PlanPost-retirement PlanAffected Line Item in the Consolidated Statements of Income
(In thousands)
Service cost$— $67 Compensation and employee benefits
Interest cost305 107 Other non-interest expense
Expected return on plan assets(487)— Other non-interest expense
Amortization:
Net loss— (61)Other non-interest expense
Net periodic (income) benefit cost$(182)$113 
Schedule of Expected Benefit Payments
Estimated future benefit payments, which reflect expected future service, as appropriate for the next five years and thereafter are as follows:
For the Year Ended December 31,Pension PlanRIM PlanPost-retirement PlanSplit-Dollar Life Insurance
(In thousands)
2026$13,772 $727 $1,670 $656 
202714,731 872 1,771 731 
202815,619 945 1,803 807 
202916,373 992 1,808 881 
203017,022 1,021 1,738 953 
2031 - 203590,351 5,266 8,190 5,784 
Schedule of Allocation of Plan Assets
The weighted average asset allocation of pension assets at December 31, 2025 and 2024 were as follows:
December 31,
20252024
Domestic equities34.4 %33.5 %
Foreign equities11.2 9.9 
Fixed income53.7 54.9 
Cash0.7 1.7 
Total100.0 %100.0 %
The 2025 target allocation of assets and acceptable ranges around the targets are as follows:
Allowable Range
Equities
30 - 60%
Fixed income
40 - 70%
Cash
0 - 10%
The following tables present the assets that are measured at fair value on a recurring basis by level within the U.S. GAAP fair value hierarchy as reported on the Statements of Net Assets Available for Plan Benefits at December 31, 2025 and 2024, respectively. A financial instrument's level within the fair value hierarchy's is based on the lowest level of input that is significant to the fair value measurement.

December 31, 2025
Fair Value Measurements
Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Money market mutual funds$3,585 $3,585 $— $— 
Mutual funds - value stock fund11,290 11,290 — — 
Mutual funds - fixed income279,384 279,384 — — 
Mutual funds - international stock58,293 58,293 — — 
Mutual funds - institutional stock index168,136 168,136 — — 
$520,688 $520,688 $— $— 

December 31, 2024
Fair Value Measurements
Fair valueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Money market mutual funds$8,229 $8,229 $— $— 
Mutual funds - value stock fund10,447 10,447 — — 
Mutual funds - fixed income262,148 262,148 — — 
Mutual funds - international stock47,314 47,314 — — 
Mutual funds - institutional stock index149,625 149,625 — — 
$477,763 $477,763 $— $— 
Employee Stock Ownership Plan (ESOP) Disclosures
The ESOP shares were as follows:
At December 31,
20252024
(In thousands)
Allocated shares1,511 1,324 
Unearned shares2,793 3,021 
Total ESOP shares4,304 4,345 
Fair value of unearned ESOP shares$43,412 $47,757 
Nonvested Restricted Stock Shares Activity
The following is a summary of the Company's restricted stock activity during the years ended December 31, 2025 and 2024:
Number of Restricted SharesWeighted Average Grant Date Fair Value
Non-vested at January 1, 2024
435,541 $16.77 
Grants250,830 16.57 
Vested(237,882)16.88 
Forfeited(5,930)17.23 
Non-vested at December 31, 2024
442,559 $16.59 
Grants209,256 16.04 
Vested(129,634)17.44 
Forfeited(83,287)16.27 
Non-vested at December 31, 2025
438,894 $16.14 
Share-based Payment Arrangement, Option, Activity
The following is a summary of the Company's option activity during the years ended December 31, 2025 and 2024:
Number of Stock Options Weighted Average Exercise PriceWeighted Average Remaining Contractual Term (in years) Aggregate Intrinsic Value
Outstanding, January 1, 2024
3,584,069 $16.20 6.1$11,602,267 
Granted305,075 16.52 — — 
Exercised(86,920)15.87 — — 
Expired(16,788)16.94 — — 
    Forfeited (28,404)16.90 — — 
Outstanding, December 31, 2024
3,757,032 $16.22 5.4$574,569 
Granted454,327 16.23 — — 
Exercised(5,837)16.10 — — 
Expired(108,731)16.17 — — 
Forfeited(71,076)16.36 — — 
Outstanding, December 31, 2025
4,025,715 $16.22 4.8— 
Options exercisable at December 31, 2025
3,366,262 $16.22 4.0$— 
v3.25.4
Income Taxes (Tables)
12 Months Ended
Dec. 31, 2025
Income Tax Disclosure [Abstract]  
Schedule of Components of Income Tax Expense (Benefit)
The components of income tax expense (benefit) for the years ended December 31, 2025, 2024, and 2023 are as follows:

Years Ended December 31,
202520242023
(In thousands)
Current:
Federal$1,922 $967 $3,488 
State150 762 3,102 
Total current 2,072 1,729 6,590 
Deferred:
Federal9,188 (3,426)6,615 
State4,963 (2,560)(3,240)
Total deferred 14,151 (5,986)3,375 
Total income tax expense (benefit) $16,223 $(4,257)$9,965 
Schedule of Effective Income Tax Rate Reconciliation
A reconciliation between the amount of reported total income tax expense and the amount computed by multiplying the applicable statutory federal income tax rate of 21% is as follows:
Years Ended December 31,
202520242023
(Dollars in thousands)
AmountRateAmountRateAmountRate
U.S. federal tax at statutory tax rate$14,278 21.00 %$(3,341)21.00 %$9,670 21.00 %
State and local income taxes, net of federal income tax effect (1)
4,039 5.94 (1,420)8.93 (103)(0.22)
Low-income housing tax credit, net of amortization (2)
(155)(0.23)152 (0.96)148 0.32 
Nontaxable or nondeductible items
ESOP fair market value adjustment240 0.35 323 (2.03)383 0.83 
162(m)39 0.06 505 (3.17)549 1.19 
Income from bank-owned life insurance(1,719)(2.53)(1,265)7.95 (1,865)(4.05)
Other, net (3)
(499)(0.73)789 (4.96)1,183 2.57 
Total income tax expense (benefit)$16,223 23.86 %$(4,257)26.76 %$9,965 21.64 %
(1) State income taxes in New Jersey and New York make up the majority (greater than 50%) of the tax effect in this category.
(2) Low-income housing tax credits are presented net of the related proportional amortization.
(3) The non-taxable or non-deductible items represents non-taxable interest income, non-deductible FDIC premiums, and other non-deductible expenses. None of these items individually or in the aggregate exceed the 5% quantitative threshold for separate disaggregation in the current year.
Schedule of Deferred Tax Assets and Liabilities The tax effects of temporary differences that give rise to significant portions of the deferred tax assets and deferred tax liabilities at December 31, 2025 and 2024 are as follows:
At December 31,
20252024
(In thousands)
Deferred tax assets:
Allowance for credit losses$18,650 $16,684 
Post-retirement benefits7,527 6,294 
Deferred compensation1,465 1,755 
Retirement Income Maintenance plan3,479 3,369 
ESOP1,315 1,240 
Stock-based compensation1,719 3,098 
Net unrealized losses on debt securities and defined benefit plans29,117 42,715 
Federal and State NOLs12,748 24,129 
Alternative minimum assessment carryforwards2,156 2,156 
Lease liability4,585 4,960 
Other items5,809 5,066 
Gross deferred tax assets88,570 111,466 
Valuation allowance— — 
88,570 111,466 
Deferred tax liabilities:
Pension expense80,321 75,489 
Depreciation1,931 2,448 
Deferred loan costs14,262 13,490 
Intangible assets1,586 1,590 
Lease right-of-use asset4,354 4,700 
Other items1,434 1,318 
Total gross deferred tax liabilities103,888 99,035 
Net deferred tax (liability) asset$(15,318)$12,431 
Schedule of Cash Flow, Supplemental Disclosures
The following table presents income taxes paid:

Years Ended December 31,
202520242023
(In thousands)
Federal taxes $— $(44)$8,400 
State taxes :
New Jersey(115)821 436 
New York 103 119 117 
New York City12 43 300 
Other(1)
— 
Total$$940 $9,253 
(1) The amount of income taxes paid during these years does not meet the 5% disaggregation threshold.
v3.25.4
Financial Transactions with Off-Balance-Sheet Risk and Concentrations of Credit Risk (Tables)
12 Months Ended
Dec. 31, 2025
Commitments and Contingencies Disclosure [Abstract]  
Schedules of Concentration of Risk, by Risk Factor
At December 31, 2025 and 2024, the following commitments existed which are not reflected in the Consolidated Statements of Financial Condition:
December 31,
20252024
(In thousands)
Loan commitments:
Residential real estate$18,069 $9,790 
Multifamily real estate31,554 17,712 
Commercial real estate68,188 30,681 
Construction101,138 26,973 
Commercial business41,059 33,027 
Consumer including home equity loans and advances4,241 6,862 
Total loan commitments$264,249 $125,045 
Schedule of Fair Value, off-Balance-Sheet Risks
The following table presents the activity in the allowance for credit losses on off-balance-sheet exposures for years ended December 31, 2025 and 2024:

December 31,
20252024
(In thousands)
Allowance for Credit Losses:
Beginning balance$3,821 $5,484 
Provision for (reversal of) credit losses125 (1,663)
 Balance at end of period$3,946 $3,821 
v3.25.4
Fair Value Measurements (Tables)
12 Months Ended
Dec. 31, 2025
Fair Value Disclosures [Abstract]  
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis
The following tables present the assets and liabilities reported in the Consolidated Statements of Financial Condition at their fair values as of December 31, 2025 and 2024, by level within the fair value hierarchy:

December 31, 2025
Fair Value Measurements
Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Debt securities available for sale:
       U.S. government and agency obligations$398,470 $398,470 $— $— 
Mortgage-backed securities and collateralized mortgage obligations654,973 — 654,973 — 
       Municipal obligations1,961 — 425 1,536 
       Corporate debt securities66,613 — 56,511 10,102 
            Total debt securities available for sale1,122,017 398,470 711,909 11,638 
Equity securities6,802 6,471 331 — 
Derivative assets10,525 — 10,525 — 
$1,139,344 $404,941 722,765 $11,638 
Derivative liabilities$13,503 $— $13,503 $— 
(17)    Fair Value Measurements (continued)

December 31, 2024
Fair Value Measurements
Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Debt securities available for sale:
       U.S. government and agency obligations$314,702 $314,702 $— $— 
Mortgage-backed securities and collateralized mortgage obligations622,957 — 622,957 — 
       Municipal obligations2,359 — 426 1,933 
       Corporate debt securities85,928 — 77,360 8,568 
            Total debt securities available for sale1,025,946 314,702 700,743 10,501 
Equity securities6,673 6,350 323 — 
Derivative assets18,895 — 18,895 — 
$1,051,514 $321,052 $719,961 $10,501 
Derivative liabilities$20,025 $— $20,025 $— 
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation
The table below provides activity of assets reported as Level 3 for the years ended December 31, 2025 and 2024:

Significant Unobservable Inputs (Level 3)
(In thousands)
Debt securities available for sale:
Balance of recurring Level 3 assets - January 1, 2024$9,737 
Purchase of Level 3 assets1,010 
Maturity of Level 3 asset(927)
Change in fair value of Level 3 assets681 
Balance of recurring Level 3 assets - December 31, 2024
$10,501 
Purchase of Level 3 asset1,549 
Maturity of Level 3 asset(1,944)
Change in fair value of Level 3 assets1,532 
Balance of recurring Level 3 assets - December 31, 2025
$11,638 
Fair Value Measurements, Nonrecurring
The following tables present the assets and liabilities reported in the Consolidated Statements of Financial Condition at their fair values on a non-recurring basis at December 31, 2025 and 2024, by level within the fair value hierarchy:
(17)    Fair Value Measurements (continued)

December 31, 2025
Fair Value Measurements
Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Impaired loans$14,799 $— $— $14,799 
Mortgage servicing rights2,384 — — 2,384 
$17,183 $— $— $17,183 


December 31, 2024
Fair Value Measurements
Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Impaired loans$3,199 $— $— $3,199 
Real estate owned1,334 — — 1,334 
Mortgage servicing rights2,443 — — 2,443 
$6,976 $— $— $6,976 
Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques
The following table presents information for Level 3 assets measured at fair value on a non-recurring basis at December 31, 2025 and 2024:
December 31, 2025
Fair ValueValuation MethodologyUnobservable InputsRange of InputsWeighted Average
(Dollars in thousands)
Impaired loans$14,799 Appraisal / Other
Discount for cost to sell (2)
6.0% (3)
6.0% (3)
Mortgage servicing rights$2,384 Discounted cash flow
Prepayment speeds and discount rates (4)
5.3% - 28.5%
13.0 %
(17)    Fair Value Measurements (continued)

December 31, 2024
Fair ValueValuation MethodologyUnobservable InputsRange of InputsWeighted Average
(Dollars in thousands)
Impaired loans$3,199 OtherA/R aging schedule— %— %
Other real estate owned$1,334 
Contract sales price(1)
Discount for costs to sell (2)
8.0%8.0 %
Mortgage servicing rights$2,443 Discounted cash flow
Prepayment speeds and discount rates (5)
4.5% - 34.3%
11.7 %
(1) Value based on sales contract.
(2) Value based on management's estimate of selling costs including real estate brokerage commissions, title transfer and other fees. Other includes accounts receivable aging or other collateral value.
(3) For real estate secured loans.
(4) Value of SBA servicing rights based on a discount rate of 13.75%.
(5) Value of SBA servicing rights based on a discount rate of 14.50%.
Fair Value, by Balance Sheet Grouping
The following tables present the assets and liabilities reported in the Consolidated Statements of Financial Condition at their fair values as of December 31, 2025 and 2024:
(17)    Fair Value Measurements (continued)

December 31, 2025
Fair Value Measurements
Carrying ValueTotal Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Financial assets:
Cash and cash equivalents$340,806 $340,806 $340,806 $— $— 
Debt securities available for sale1,122,017 1,122,017 398,470 711,909 11,638 
Debt securities held to maturity396,233 367,289 — 367,289 — 
Equity securities6,802 6,802 6,471 331 
Federal Home Loan Bank stock64,604 64,604 — 64,604 — 
Loans receivable, net8,224,809 8,015,243 — — 8,015,243 
Derivative assets10,525 10,525 — 10,525 — 
Financial liabilities:
Deposits$8,444,079 $8,444,260 $— $8,444,260 $— 
Borrowings1,183,472 1,192,416 — 1,192,416 — 
Derivative liabilities13,503 13,503 — 13,503 — 

December 31, 2024
Fair Value Measurements
Carrying ValueTotal Fair ValueQuoted Prices in Active Markets for Identical Assets (Level 1)Significant Other Observable Inputs (Level 2)Significant Unobservable Inputs (Level 3)
(In thousands)
Financial assets:
Cash and cash equivalents$289,223 $289,223 $289,223 $— $— 
Debt securities available for sale1,025,946 1,025,946 314,702 700,743 10,501 
Debt securities held to maturity392,840 350,153 — 350,153 — 
Equity securities6,673 6,673 6,350 323 — 
Federal Home Loan Bank stock60,387 60,387 — 60,387 — 
Loans receivable, net7,856,970 7,393,058 — — 7,393,058 
Derivative assets18,895 18,895 — 18,895 — 
Financial liabilities:
Deposits$8,096,149 $8,088,842 $— $8,088,842 $— 
Borrowings1,080,600 1,077,466 — 1,077,466 — 
Derivative liabilities20,025 20,025 — 20,025 — 
v3.25.4
Earnings per Share (Tables)
12 Months Ended
Dec. 31, 2025
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted
The following is a reconciliation of the numerators and denominators of the basic and diluted earnings per share calculations for the years ended December 31, 2025, 2024, and 2023:
December 31,
202520242023
(In thousands, except per share data)
Net income (loss)$51,766 $(11,653)$36,086 
Shares:
Weighted average shares outstanding - basic101,810,752 101,676,758 102,656,388 
Weighted average diluted shares outstanding— 162,749 238,581 
Weighted average shares outstanding - diluted101,810,752 101,839,507 102,894,969 
Earnings (loss) per share:
Basic$0.51 $(0.11)$0.35 
Diluted$0.51 $(0.11)$0.35 
v3.25.4
Parent-only Financial Information (Tables)
12 Months Ended
Dec. 31, 2025
Condensed Financial Information Disclosure [Abstract]  
Condensed Balance Sheet
The condensed financial statements of Columbia Financial, Inc. (parent company) are presented below:
Statements of Financial Condition
December 31,
20252024
(In thousands)
Assets
Cash and due from banks$31,494 $6,459 
Short-term investments111 110 
Total cash and cash equivalents31,605 6,569 
Equity securities, at fair value201 193 
Investment in subsidiaries1,102,653 1,045,203 
Loan receivable from Columbia Bank32,674 34,599 
Other assets3,411 3,106 
Total assets$1,170,544 $1,089,670 
                                                  Liabilities and Stockholders' Equity
Liabilities:
Borrowings$7,057 $7,036 
Accrued expenses and other liabilities2,759 2,471 
Total liabilities9,816 9,507 
Stockholders' equity1,160,728 1,080,163 
Total liabilities and stockholders' equity$1,170,544 $1,089,670 
Condensed Income Statement and Comprehensive Income Statement
Statements of Income and Comprehensive Income
Years Ended December 31,
202520242023
(In thousands)
Dividends from subsidiary$35,000 $— $45,000 
Interest income:
Loans receivable1,643 1,735 1,814 
Debt securities available for sale and equity securities16 20 18 
Interest-earning deposits
Total interest income36,661 1,756 46,840 
Interest expense on borrowings408 474 1,339 
Net interest income 36,253 1,282 45,501 
Equity earnings income (loss) in subsidiaries16,605 (10,677)(8,432)
Non-interest income:
Change in fair value of equity securities(10)
Other non-interest income— — 
Total non-interest income (10)
Non-interest expense:
Merger-related expenses214 755 41 
Loss on extinguishment of debt— — 300 
Other non-interest expense1,598 1,618 1,502 
Total non-interest expense1,812 2,373 1,843 
Income (loss) before income tax (benefit)51,055 (11,766)35,216 
Income tax (benefit)(711)(113)(870)
Net income (loss)51,766 (11,653)36,086 
Other comprehensive income34,396 48,367 20,561 
Comprehensive income $86,162 $36,714 $56,647 
Condensed Cash Flow Statement
Statements of Cash Flows
Years Ended December 31,
202520242023
(In thousands)
Cash flows from operating activities:
Net income (loss)$51,766 $(11,653)$36,086 
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Amortization of intangible assets21 74 74 
Change in fair value of equity securities(8)(2)10 
Loss on extinguishment of debt— — 300 
Deferred tax expense (425)2,856 2,019 
(Increase) decrease in other assets202 (2,653)8,894 
(Decrease) in accrued expenses and other liabilities(180)(658)(890)
Equity in undistributed (earnings) loss of subsidiaries(16,605)10,677 8,432 
Net cash provided by (used in) operating activities$34,771 $(1,359)$54,925 
Cash flows from investing activities:
Repayment of loan receivable from Columbia Bank1,925 1,833 1,755 
Net cash provided by investing activities$1,925 $1,833 $1,755 
Cash flows from financing activities:
Repayment of term note $— $— $(30,300)
Purchase of treasury stock(13,351)(5,894)(80,497)
Exercise of options— — 42 
Issuance of common stock allocated to restricted stock award grants3,355 4,153 4,066 
Restricted stock forfeitures(1,224)(99)(501)
Repurchase of shares for taxes(441)(817)(623)
Net cash (used in) financing activities$(11,661)$(2,657)$(107,813)
Net increase (decrease) in cash and cash equivalents$25,035 $(2,183)$(51,133)
Cash and cash equivalents at beginning of year6,569 8,752 59,885 
Cash and cash equivalents at end of period$31,604 $6,569 $8,752 
Non-cash investing and financing activities:
Excise tax on net stock repurchases$137 $42 $800 
v3.25.4
Other Comprehensive Income (Loss) (Tables)
12 Months Ended
Dec. 31, 2025
Equity [Abstract]  
Schedule of Other Comprehensive Income (Loss)
The following tables present the components of other comprehensive income (loss), both gross and net of tax, for the years ended December 31, 2025, 2024, and 2023:
For the Years Ended December 31,
20252024
Before TaxTax EffectAfter TaxBefore TaxTax EffectAfter Tax
(In thousands)
Components of other comprehensive income:
Unrealized gain on debt securities available for sale:$37,429 $(10,925)$26,504 $77,585 $(21,591)$55,994 
Accretion of unrealized gain on debt securities reclassified as held to maturity(3)(1)
Reclassification adjustment for gain (loss) included in net income290 (81)209 (35,851)9,980 (25,871)
37,724 (11,009)26,715 41,738 (11,612)30,126 
Derivatives:
Unrealized (loss) gain on swap contracts accounted for as cash flow hedges(4,537)1,264 (3,273)2,467 (688)1,779 
Employee benefit plans:
Amortization of prior service cost included in net income(141)39 (102)(98)27 (71)
Reclassification adjustment of actuarial net gain (loss) included in net income92 (26)66 (1,341)378 (963)
Change in funded status of retirement obligations15,451 (4,461)10,990 24,248 (6,752)17,496 
15,402 (4,448)10,954 22,809 (6,347)16,462 
Total other comprehensive income$48,589 $(14,193)$34,396 $67,014 $(18,647)$48,367 

    
(20)    Other Comprehensive Income (Loss) (continued)

For the Year Ended December 31,
2023
Before TaxTax EffectAfter Tax
(In thousands)
Components of other comprehensive income:
Unrealized gain on debt securities available for sale:$41,181 $(11,544)$29,637 
Accretion of unrealized (loss) on debt securities reclassified as held to maturity(14)(10)
Reclassification adjustment for (loss) included in net income(10,847)3,053 (7,794)
30,320 (8,487)21,833 
Derivatives:
Unrealized (loss)on swap contracts accounted for as cash flow hedges(1,274)356 (918)
Employee benefit plans:
Amortization of prior service cost included in net income(56)16 (40)
Reclassification adjustment of actuarial net (loss) included in net income(776)218 (558)
Change in funded status of retirement obligations340 (96)244 
(492)138 (354)
Total other comprehensive income $28,554 $(7,993)$20,561 
Components of Other Comprehensive Income (Loss) The following tables present the changes in the components of accumulated other comprehensive income (loss), net of tax, for the years ended December 31, 2025, 2024, and 2023:
For the Years Ended December 31,
20252024
Unrealized (Losses) on Debt Securities Available for SaleUnrealized Gains (Losses) on SwapsEmployee Benefit PlansAccumulated Other Comprehensive (Loss)Unrealized (Losses) on Debt Securities Available for SaleUnrealized Gains (Losses) on SwapsEmployee Benefit PlansAccumulated Other Comprehensive (Loss)
(In thousands)
Balance at beginning of period$(83,523)$1,365 $(28,210)$(110,368)$(113,649)$(414)$(44,672)$(158,735)
Current period changes in other comprehensive income (loss)26,715 (3,273)10,954 34,396 30,126 1,779 16,462 48,367 
Total other comprehensive income (loss) $(56,808)$(1,908)$(17,256)$(75,972)$(83,523)$1,365 $(28,210)$(110,368)

For the Year Ended December 31,
2023
Unrealized Gains (Losses) on Debt Securities Available for SaleUnrealizedGains (Losses) on SwapsEmployee Benefit PlansAccumulated Other Comprehensive (Loss)
(In thousands)
Balance at beginning of period$(135,482)$504 $(44,318)$(179,296)
Current period changes in other comprehensive income (loss)21,833 (918)(354)20,561 
Total other comprehensive income (loss)$(113,649)$(414)$(44,672)$(158,735)
Reclassification Out of AOCI The following tables reflect amounts reclassified from accumulated other comprehensive income (loss) in the Consolidated Statements of Income and the affected line item in the statement where net income is presented for the years ended December 31, 2025, 2024, and 2023:
Accumulated Other Comprehensive Income (Loss) Components
For the Years Ended December 31,Affected Line Items in the Consolidated Statements of Income
202520242023
(In thousands)
Reclassification adjustment for gain (loss) included in net income$290 $(35,851)$(10,847)Gain (loss) on securities transactions
Reclassification adjustment of actuarial net gain (loss) included in net income92 (1,341)(776)Other non-interest expense
      Total before tax 382 (37,192)(11,623)
      Income tax (expense) benefit(107)10,358 3,271 
      Net of tax$275 $(26,834)$(8,352)
v3.25.4
Derivatives and Hedging Activities (Tables)
12 Months Ended
Dec. 31, 2025
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Schedule of Derivative Financial Instruments on the Consolidated Balance Sheets
The tables below present the fair value of the Company’s derivative financial instruments as well as their classification in the Consolidated Statements of Financial Condition at December 31, 2025 and 2024:
December 31, 2025
Asset DerivativeLiability Derivative
Consolidated Statements of Financial ConditionFair ValueConsolidated Statements of Financial ConditionFair Value
(In thousands)
Derivatives:
Interest rate products - designated hedgesOther Assets$276 Other Liabilities$3,213 
Interest rate products - non-designated hedgesOther Assets10,249 Other Liabilities10,290 
Total derivative instruments$10,525 $13,503 
December 31, 2024
Asset DerivativeLiability Derivative
Consolidated Statements of Financial ConditionFair ValueConsolidated Statements of Financial ConditionFair Value
(In thousands)
Derivatives:
Interest rate products - designated hedgesOther Assets$3,619 Other Liabilities$4,847 
Interest rate products - non-designated hedgesOther Assets15,276 Other Liabilities15,178 
Total derivative instruments$18,895 $20,025 
Schedule of Derivative Instruments
At December 31, 2024 the following amounts were recorded on the Consolidated Statements of Financial Condition related to cumulative basis adjustment for fair value hedges:
Carrying Amount of Hedged Assets/(Liabilities)Cumulative Amount of Fair Value Hedging Adjustment included in the Carrying Amount of Hedged Assets/(Liabilities)
At December 31, 2024
(In thousands)
Fair value interest rate products$853,422 $3,422 
v3.25.4
Revenue Recognition (Tables)
12 Months Ended
Dec. 31, 2025
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue
The following table presents non-interest income, segregated by revenue streams in-scope and out-of-scope of ASC Topic 606, for the years ended December 31, 2025, 2024, and 2023.
For the Years Ended December 31,
202520242023
(In thousands)
Non-interest income
In-scope of Topic 606:
Demand deposit account fees$8,054 $6,507 $5,145 
Title insurance fees3,034 2,505 2,400 
Insurance agency income580 269 188 
Other non-interest income6,409 5,962 7,991 
Total in-scope non-interest income18,077 15,243 15,724 
Total out-of-scope non-interest income18,992 (13,349)11,655 
Total non-interest income$37,069 $1,894 $27,379 
v3.25.4
Business (Details) - shares
May 01, 2022
Dec. 01, 2021
Freehold Entities    
Subsidiary, Sale of Stock [Line Items]    
Business, acquisition, equity interest issued or issuable (in shares)   2,591,007
RSI Entities    
Subsidiary, Sale of Stock [Line Items]    
Business, acquisition, equity interest issued or issuable (in shares) 6,086,314  
v3.25.4
Summary of Significant Accounting Policies (Details) - USD ($)
1 Months Ended 12 Months Ended
Apr. 30, 2018
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Nov. 30, 2019
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Assets   $ 11,018,793,000 $ 10,475,493,000    
Operating Lease, Liability, Statement of Financial Position [Extensible List]   Other Liabilities Other Liabilities    
Years of employment benefits are based upon   5 years      
Unrecognized tax benefits   $ 0 $ 0    
Income tax penalties and interest expense   $ 0 $ 0 $ 0  
Columbia Bank Employee Stock Ownership Plan          
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Loan term 20 years 20 years      
Buildings          
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Property, plant and equipment, useful life   40 years      
Minimum          
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Defined contribution plan, employer matching contribution, percent of match   3.00%      
Minimum | Land and building improvements          
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Property, plant and equipment, useful life   10 years      
Minimum | Furniture and equipment          
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Property, plant and equipment, useful life   2 years      
Maximum          
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Defined contribution plan, employer matching contribution, percent of match   4.50%      
Maximum | Land and building improvements          
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Property, plant and equipment, useful life   20 years      
Maximum | Furniture and equipment          
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Property, plant and equipment, useful life   10 years      
Variable Interest Entity, Not Primary Beneficiary          
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Assets         $ 7,000,000.0
Stewardship Statutory Trust I          
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]          
Ownership percentage by parent         100.00%
v3.25.4
Acquisitions (Details) - USD ($)
$ in Thousands
12 Months Ended
May 01, 2022
Dec. 01, 2021
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Business Combination [Line Items]          
Merger-related expenses     $ 214 $ 1,665 $ 606
Freehold Entities          
Business Combination [Line Items]          
Business, acquisition, equity interest issued or issuable (in shares)   2,591,007      
Merger-related expenses     0 1,700 413
RSI Entities          
Business Combination [Line Items]          
Business, acquisition, equity interest issued or issuable (in shares) 6,086,314        
Merger-related expenses     $ 0 $ 0 $ 193
v3.25.4
Debt Securities Available for Sale - Securities Available-for-Sale (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost $ 1,200,219 $ 1,141,868
Gross Unrealized Gains 6,555 1,109
Gross Unrealized (Losses) (84,757) (117,031)
Fair Value 1,122,017 1,025,946
U.S. government and agency obligations    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 393,875 314,494
Gross Unrealized Gains 4,595 810
Gross Unrealized (Losses) 0 (602)
Fair Value 398,470 314,702
Mortgage-backed securities and collateralized mortgage obligations    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 732,393 729,488
Gross Unrealized Gains 1,646 173
Gross Unrealized (Losses) (79,066) (106,704)
Fair Value 654,973 622,957
Municipal obligations    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 1,975 2,378
Gross Unrealized Gains 0 3
Gross Unrealized (Losses) (14) (22)
Fair Value 1,961 2,359
Corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 71,976 95,508
Gross Unrealized Gains 314 123
Gross Unrealized (Losses) (5,677) (9,703)
Fair Value $ 66,613 $ 85,928
v3.25.4
Debt Securities Available for Sale - Expected Maturities of Available-for-Sale Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Amortized Cost    
One year or less $ 130,960  
More than one year to five years 251,648  
More than five years to ten years 85,218  
Available-for-sale debt securities, allocated and single maturity date, total 467,826  
Mortgage-backed securities and collateralized mortgage obligations 732,393  
Amortized Cost 1,200,219 $ 1,141,868
Fair Value    
One year or less 131,384  
More than one year to five years 255,013  
More than five years to ten years 80,647  
Available-for-sale debt securities, allocated and single maturity date, total 467,044  
Mortgage-backed securities and collateralized mortgage obligations 654,973  
Debt securities available for sale, at fair value $ 1,122,017 $ 1,025,946
v3.25.4
Debt Securities Available for Sale - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2025
USD ($)
security
Dec. 31, 2024
USD ($)
security
Dec. 31, 2023
USD ($)
security
Debt Securities, Available-for-sale [Line Items]      
Mortgage-backed securities and collateralized mortgage obligations, amortized cost $ 732,393    
Mortgage-backed securities and collateralized mortgage obligations, fair value 654,973    
Proceeds from sales of debt securities available for sale 15,656 $ 321,233 $ 277,022
Debt securities, available-for-sale securities, gross realized gains 336 0 0
Debt securities, available-for-sale, realized loss $ 0 $ 35,900 $ 10,800
Number of called debt securities available -for-sale | security 4 1 0
Proceeds from calls of debt securities available for sale $ 4,000 $ 2,000  
Proceeds from maturities of debt securities, available-for-sale 77,500 15,000 $ 4
Debt securities, available-for-sale, restricted $ 478,500 $ 343,400  
Number of unrealized loss positions | security 128 185  
Number of temporarily impaired securities | security   2  
Debt securities available for sale, at fair value $ 1,122,017 $ 1,025,946  
Debt securities, available-for-sale, excluding accrued interest, allowance for credit loss, period increase (decrease) $ 0 $ 0  
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable Accrued interest receivable  
Accrued interest receivable on debt securities available for sale $ 5,200 $ 4,700  
Corporate debt securities      
Debt Securities, Available-for-sale [Line Items]      
Debt securities available for sale, at fair value $ 66,613 85,928  
External Credit Rating, Noninvestment Grade | Corporate debt securities      
Debt Securities, Available-for-sale [Line Items]      
Debt securities available for sale, at fair value   $ 8,400  
v3.25.4
Debt Securities Available for Sale - Continuous Unrealized Loss Position of Available-for-Sale Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Less Than 12 Months    
Fair Value $ 33,242 $ 219,960
Gross Unrealized (Losses) (75) (1,077)
12 Months or Longer    
Fair Value 513,364 558,710
Gross Unrealized (Losses) (84,682) (115,954)
Total    
Fair Value 546,606 778,670
Gross Unrealized (Losses) (84,757) (117,031)
U.S. government and agency obligations    
Less Than 12 Months    
Fair Value 0 126,197
Gross Unrealized (Losses) 0 (602)
12 Months or Longer    
Fair Value 0 0
Gross Unrealized (Losses) 0 0
Total    
Fair Value 0 126,197
Gross Unrealized (Losses) 0 (602)
Mortgage-backed securities and collateralized mortgage obligations    
Less Than 12 Months    
Fair Value 27,710 93,763
Gross Unrealized (Losses) (57) (475)
12 Months or Longer    
Fair Value 456,562 476,559
Gross Unrealized (Losses) (79,009) (106,229)
Total    
Fair Value 484,272 570,322
Gross Unrealized (Losses) (79,066) (106,704)
Municipal obligations    
Less Than 12 Months    
Fair Value 1,536 0
Gross Unrealized (Losses) (14) 0
12 Months or Longer    
Fair Value 0 1,346
Gross Unrealized (Losses) 0 (22)
Total    
Fair Value 1,536 1,346
Gross Unrealized (Losses) (14) (22)
Corporate debt securities    
Less Than 12 Months    
Fair Value 3,996 0
Gross Unrealized (Losses) (4) 0
12 Months or Longer    
Fair Value 56,802 80,805
Gross Unrealized (Losses) (5,673) (9,703)
Total    
Fair Value 60,798 80,805
Gross Unrealized (Losses) $ (5,677) $ (9,703)
v3.25.4
Debt Securities Held-to-Maturity (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost $ 396,233 $ 392,840
Gross Unrealized Gains 699 8
Gross Unrealized (Losses) (29,643) (42,695)
Allowance for Credit Losses 0 0
Fair Value 367,289 350,153
U.S. government and agency obligations    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 44,872 44,871
Gross Unrealized Gains 0 0
Gross Unrealized (Losses) (3,321) (5,288)
Allowance for Credit Losses 0 0
Fair Value 41,551 39,583
Mortgage-backed securities and collateralized mortgage obligations    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 351,361 347,969
Gross Unrealized Gains 699 8
Gross Unrealized (Losses) (26,322) (37,407)
Allowance for Credit Losses 0 0
Fair Value $ 325,738 $ 310,570
v3.25.4
Debt Securities Held to Maturity - Expected Maturities of Held-to-Maturity Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Amortized Cost    
One year or less $ 14,875  
More than one year to five years 10,000  
More than five years to ten years 9,997  
More than ten years 10,000  
Held-to-maturity debt securities, allocated and single maturity date, amortized cost 44,872  
Mortgage-backed securities and collateralized mortgage obligations 351,361  
Amortized Cost 396,233 $ 392,840
Fair Value    
One year or less 14,807  
More than one year to five years 9,376  
More than five years to ten years 9,310  
More than ten years 8,058  
Held-to-maturity debt securities, allocated and single maturity date, fair value 41,551  
Mortgage-backed securities and collateralized mortgage obligations 325,738  
Fair Value $ 367,289 $ 350,153
v3.25.4
Debt Securities Held to Maturity - Narrative (Details)
12 Months Ended
Dec. 31, 2025
USD ($)
security
Dec. 31, 2024
USD ($)
security
Dec. 31, 2023
USD ($)
Schedule of Held-to-maturity Securities [Line Items]      
Amortized Cost $ 396,233,000 $ 392,840,000  
Debt securities held to maturity 367,289,000 350,153,000  
Proceeds from sale of held-to-maturity securities 0 $ 0 $ 0
Debt securities, held-to-maturity, number of called debt securities | security   1  
Proceeds from maturities, calls of held-to-maturity securities   $ 5,000,000.0 0
Proceeds from maturities of held-to-maturity securities     $ 4,300,000
Securities available-for-sale sold under agreements $ 242,200,000 $ 247,600,000  
Number of unrealized loss positions | security 101 105  
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable Accrued interest receivable  
Accrued interest receivable on debt securities held-to-maturity $ 948,000 $ 898,000  
Mortgage-backed securities and collateralized mortgage obligations      
Schedule of Held-to-maturity Securities [Line Items]      
Amortized Cost 351,361,000 347,969,000  
Debt securities held to maturity $ 325,738,000 $ 310,570,000  
v3.25.4
Debt Securities Held to Maturity - Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Less Than 12 Months    
Fair Value $ 1,659 $ 41,030
Gross Unrealized (Losses) (1) (605)
12 Months or Longer    
Fair Value 331,789 307,339
Gross Unrealized (Losses) (29,642) (42,090)
Total    
Fair Value 333,448 348,369
Gross Unrealized (Losses) (29,643) (42,695)
U.S. government and agency obligations    
Less Than 12 Months    
Fair Value 0 0
Gross Unrealized (Losses) 0 0
12 Months or Longer    
Fair Value 41,552 39,583
Gross Unrealized (Losses) (3,321) (5,288)
Total    
Fair Value 41,552 39,583
Gross Unrealized (Losses) (3,321) (5,288)
Mortgage-backed securities and collateralized mortgage obligations    
Less Than 12 Months    
Fair Value 1,659 41,030
Gross Unrealized (Losses) (1) (605)
12 Months or Longer    
Fair Value 290,237 267,756
Gross Unrealized (Losses) (26,321) (36,802)
Total    
Fair Value 291,896 308,786
Gross Unrealized (Losses) $ (26,322) $ (37,407)
v3.25.4
Equity Securities at Fair Value (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Investments, Debt and Equity Securities [Abstract]      
Equity securities, at fair value $ 6,802 $ 6,673  
Change in fair value of equity securities 873 2,594 $ 695
Proceeds from sales of equity securities 698 $ 0 $ 0
Equity securities, FV-NI, realized gain 0    
Equity securities, FV-NI, realized loss $ 46    
v3.25.4
Loans Receivable and Allowance for Credit Losses - Loans Receivable (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans $ 8,253,818 $ 7,881,133
Net deferred loan costs, fees and purchased premiums and discounts 38,192 35,795
Loans receivable 8,292,010 7,916,928
Real estate loans | One-to-four family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 2,559,519 2,712,752
Real estate loans | Multifamily    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 1,677,613 1,460,641
Real estate loans | Commercial real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 2,521,151 2,349,308
Real estate loans | Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 469,438 473,573
Commercial business loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 768,076 622,300
Home equity loans and advances | Home equity loans and advances    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 255,126 259,155
Home equity loans and advances | Other consumer loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 2,895 3,404
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 8,243,376 7,869,447
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 2,558,252 2,710,937
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 1,677,613 1,460,641
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 2,513,260 2,339,883
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 469,438 473,573
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 766,792 622,000
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 255,126 259,009
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 2,895 3,404
Financial Asset Acquired with Credit Deterioration    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 10,442 11,686
Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 1,267 1,815
Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 0 0
Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 7,891 9,425
Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 0 0
Financial Asset Acquired with Credit Deterioration | Commercial business loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 1,284 300
Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans 0 146
Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Total gross loans $ 0 $ 0
v3.25.4
Loans Receivable and Allowance for Credit Losses - Narrative (Details)
3 Months Ended 12 Months Ended
Dec. 31, 2025
USD ($)
loan
Dec. 31, 2025
USD ($)
loan
segment
Dec. 31, 2024
USD ($)
loan
real_estate
property
Dec. 31, 2023
USD ($)
loan
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans held-for-sale $ 0 $ 0 $ 0  
Gain on sale of loans held-for-sale   899,000 906,000 $ 2,300,000
Loss on sale of loans held-for-sale   100,000 0 1,000,000.0
Purchases and grants of loans receivable   150,882,000 78,719,000 14,729,000
Financing receivable, guarantor swap loan exchanged, amount 13,300,000   0  
Financing receivable, gain guarantor swap loan exchanged 129,000      
Financing receivable, loss guarantor swap loan exchanged 0      
Carrying value of servicing liability 494,800,000 494,800,000 503,900,000  
Servicing income   1,400,000 1,400,000 1,400,000
Loans receivable 8,292,010,000 $ 8,292,010,000 7,916,928,000  
Threshold period, past due status of financing receivables   30 days    
Non-accrual 38,000,000.0 $ 38,000,000.0 $ 21,700,000  
Threshold period, past due for nonperforming status of financing receivables   90 days 90 days  
Financing receivable, interest lost on nonaccrual loans   $ 3,300,000 $ 1,500,000 909,000
Financing receivable, interest income, cash basis method   1,000,000.0 821,000 358,000
Loans past due $ 0 0 0  
Total writeoff   $ 7,224,000 $ 10,198,000 3,494,000
Number of real estate owned | real_estate     0  
Number of commercial property | property     1  
Loans in process of foreclosure     $ 1,300,000  
Number of loan portfolio segments | segment   7    
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable Accrued interest receivable Accrued interest receivable  
Accrued interest receivable on loans receivable $ 34,700,000 $ 34,700,000 $ 33,500,000  
Unused commitments to extend credit 1,000,000.0 1,000,000.0 0 0
Financial Asset Acquired with Credit Deterioration        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total writeoff   3,200,000    
Stewardship Financial Corporation | Financial Asset Acquired with Credit Deterioration        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans receivable 1,100,000 1,100,000 1,200,000  
Freehold Entities | Financial Asset Acquired with Credit Deterioration        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans receivable 44,000 44,000 241,000  
RSI Entities | Financial Asset Acquired with Credit Deterioration        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans receivable 8,300,000 8,300,000 10,300,000  
Equipment Finance Loans | Financial Asset Acquired with Credit Deterioration        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans receivable 1,000,000.0 1,000,000.0    
Less Than 90 Days        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Non-accrual 10,400,000 $ 10,400,000 $ 15,500,000  
Number of loans in non-accrual status | loan   38 31  
Related Parties        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Purchases and grants of loans receivable       $ 100,000
Loans receivable 2,200,000 $ 2,200,000 $ 2,600,000  
Number of loans granted to related party | loan   0 0 1
Real estate loans | One-to-four family        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Proceeds from sales of loans held-for-sale   $ 16,100,000 $ 8,900,000 $ 73,400,000
Total writeoff   0 2,000 585,000
Real estate loans | Construction        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Proceeds from sales of loans held-for-sale   8,600,000 3,300,000 8,100,000
Purchases and grants of loans receivable   20,000,000.0    
Total writeoff   53,000 0 0
Real estate loans | Commercial real estate        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Proceeds from sales of loans held-for-sale       21,400,000
Purchases and grants of loans receivable   130,900,000 78,700,000 14,700,000
Total writeoff   119,000 120,000 150,000
Commercial business loans        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Proceeds from sales of loans held-for-sale   10,900,000 6,800,000 18,400,000
Total writeoff   6,887,000 9,814,000 2,618,000
Home equity loans and advances | Mortgages        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Loans in process of foreclosure $ 2,500,000 $ 2,500,000 $ 1,100,000  
Mortgage loans in process of foreclosure, number of loans | loan 9 9 4  
Home equity loans and advances | Home equity loans and advances        
Accounts, Notes, Loans and Financing Receivable [Line Items]        
Total writeoff   $ 0 $ 0 $ 26,000
Loans in process of foreclosure     $ 585,000  
Mortgage loans in process of foreclosure, number of loans | loan     4  
v3.25.4
Loans Receivable and Allowance for Credit Losses - Aging of Loans (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Financing Receivable, Past Due [Line Items]    
Non-accrual $ 38,000 $ 21,700
Total gross loans 8,253,818 7,881,133
Real estate loans | One-to-four family    
Financing Receivable, Past Due [Line Items]    
Total gross loans 2,559,519 2,712,752
Real estate loans | Multifamily    
Financing Receivable, Past Due [Line Items]    
Total gross loans 1,677,613 1,460,641
Real estate loans | Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Total gross loans 2,521,151 2,349,308
Real estate loans | Construction    
Financing Receivable, Past Due [Line Items]    
Total gross loans 469,438 473,573
Commercial business loans    
Financing Receivable, Past Due [Line Items]    
Total gross loans 768,076 622,300
Home equity loans and advances | Home equity loans and advances    
Financing Receivable, Past Due [Line Items]    
Total gross loans 255,126 259,155
Home equity loans and advances | Other consumer loans    
Financing Receivable, Past Due [Line Items]    
Total gross loans 2,895 3,404
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration    
Financing Receivable, Past Due [Line Items]    
Non-accrual 38,000 21,701
Total gross loans 8,243,376 7,869,447
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Total gross loans 82,369 56,769
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | 30-59 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 36,598 40,649
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | 60-89 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 18,153 9,900
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | 90 Days or More    
Financing Receivable, Past Due [Line Items]    
Total gross loans 27,618 6,220
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Current    
Financing Receivable, Past Due [Line Items]    
Total gross loans 8,161,007 7,812,678
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family    
Financing Receivable, Past Due [Line Items]    
Non-accrual 9,787 8,750
Total gross loans 2,558,252 2,710,937
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Total gross loans 24,083 21,664
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family | 30-59 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 13,886 11,685
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family | 60-89 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 5,652 6,250
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family | 90 Days or More    
Financing Receivable, Past Due [Line Items]    
Total gross loans 4,545 3,729
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family | Current    
Financing Receivable, Past Due [Line Items]    
Total gross loans 2,534,169 2,689,273
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily    
Financing Receivable, Past Due [Line Items]    
Non-accrual 0 0
Total gross loans 1,677,613 1,460,641
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Total gross loans 12,978 13,626
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily | 30-59 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 2,083 13,626
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily | 60-89 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 10,595 0
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily | 90 Days or More    
Financing Receivable, Past Due [Line Items]    
Total gross loans 300 0
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily | Current    
Financing Receivable, Past Due [Line Items]    
Total gross loans 1,664,635 1,447,015
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate    
Financing Receivable, Past Due [Line Items]    
Non-accrual 5,766 2,920
Total gross loans 2,513,260 2,339,883
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Total gross loans 13,219 5,026
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate | 30-59 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 8,072 4,394
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate | 60-89 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 320 632
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate | 90 Days or More    
Financing Receivable, Past Due [Line Items]    
Total gross loans 4,827 0
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate | Current    
Financing Receivable, Past Due [Line Items]    
Total gross loans 2,500,041 2,334,857
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction    
Financing Receivable, Past Due [Line Items]    
Non-accrual 5,923 0
Total gross loans 469,438 473,573
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Total gross loans 5,923 6,205
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction | 30-59 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 0 6,205
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction | 60-89 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 0 0
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction | 90 Days or More    
Financing Receivable, Past Due [Line Items]    
Total gross loans 5,923 0
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction | Current    
Financing Receivable, Past Due [Line Items]    
Total gross loans 463,515 467,368
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans    
Financing Receivable, Past Due [Line Items]    
Non-accrual 15,281 9,785
Total gross loans 766,792 622,000
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Total gross loans 24,403 8,721
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans | 30-59 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 11,990 3,713
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans | 60-89 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 1,408 2,643
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans | 90 Days or More    
Financing Receivable, Past Due [Line Items]    
Total gross loans 11,005 2,365
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans | Current    
Financing Receivable, Past Due [Line Items]    
Total gross loans 742,389 613,279
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances    
Financing Receivable, Past Due [Line Items]    
Non-accrual 1,243 246
Total gross loans 255,126 259,009
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Total gross loans 1,759 1,524
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances | 30-59 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 566 1,026
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances | 60-89 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 175 372
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances | 90 Days or More    
Financing Receivable, Past Due [Line Items]    
Total gross loans 1,018 126
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances | Current    
Financing Receivable, Past Due [Line Items]    
Total gross loans 253,367 257,485
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans    
Financing Receivable, Past Due [Line Items]    
Non-accrual 0 0
Total gross loans 2,895 3,404
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans | Financial Asset, Past Due    
Financing Receivable, Past Due [Line Items]    
Total gross loans 4 3
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans | 30-59 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 1 0
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans | 60-89 Days    
Financing Receivable, Past Due [Line Items]    
Total gross loans 3 3
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans | 90 Days or More    
Financing Receivable, Past Due [Line Items]    
Total gross loans 0 0
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans | Current    
Financing Receivable, Past Due [Line Items]    
Total gross loans $ 2,891 $ 3,401
v3.25.4
Loans Receivable and Allowance for Credit Losses - Allowance for Loan Losses (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Allowance for credit losses:        
Individually analyzed loans $ 0 $ 0    
Total 67,201 59,958 $ 55,096 $ 52,803
Total loans:        
Individually analyzed loans 37,623 37,942    
Total gross loans 8,253,818 7,881,133    
Real estate loans | One-to-four family        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Total 13,283 13,173 13,017 11,802
Total loans:        
Individually analyzed loans 10,988 9,167    
Total gross loans 2,559,519 2,712,752    
Real estate loans | Multifamily        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Total 10,647 9,542 8,742 7,877
Total loans:        
Individually analyzed loans 300 5,743    
Total gross loans 1,677,613 1,460,641    
Real estate loans | Commercial real estate        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Total 18,592 15,969 15,757 18,111
Total loans:        
Individually analyzed loans 5,492 7,517    
Total gross loans 2,521,151 2,349,308    
Real estate loans | Construction        
Allowance for credit losses:        
Individually analyzed loans 0      
Total 6,617 6,703 7,758 6,425
Total loans:        
Individually analyzed loans 5,923      
Total gross loans 469,438 473,573    
Commercial business loans        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Total 16,767 13,112 7,923 6,897
Total loans:        
Individually analyzed loans 13,658 15,184    
Total gross loans 768,076 622,300    
Home equity loans and advances | Home equity loans and advances        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Total 1,289 1,452 1,892 1,681
Total loans:        
Individually analyzed loans 1,262 331    
Total gross loans 255,126 259,155    
Home equity loans and advances | Other consumer loans        
Allowance for credit losses:        
Total 6 7 $ 7 $ 10
Total loans:        
Total gross loans 2,895 3,404    
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Collectively analyzed loans 67,155 59,925    
Total loans:        
Individually analyzed loans 37,623 37,942    
Collectively analyzed loans 8,205,753 7,831,505    
Total gross loans 8,243,376 7,869,447    
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Collectively analyzed loans 13,280 13,169    
Total loans:        
Individually analyzed loans 10,988 9,167    
Collectively analyzed loans 2,547,264 2,701,770    
Total gross loans 2,558,252 2,710,937    
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Collectively analyzed loans 10,647 9,542    
Total loans:        
Individually analyzed loans 300 5,743    
Collectively analyzed loans 1,677,313 1,454,898    
Total gross loans 1,677,613 1,460,641    
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Collectively analyzed loans 18,563 15,940    
Total loans:        
Individually analyzed loans 5,492 7,517    
Collectively analyzed loans 2,507,768 2,332,366    
Total gross loans 2,513,260 2,339,883    
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Collectively analyzed loans 6,617 6,703    
Total loans:        
Individually analyzed loans 5,923 0    
Collectively analyzed loans 463,515 473,573    
Total gross loans 469,438 473,573    
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Collectively analyzed loans 16,753 13,112    
Total loans:        
Individually analyzed loans 13,658 15,184    
Collectively analyzed loans 753,134 606,816    
Total gross loans 766,792 622,000    
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Collectively analyzed loans 1,289 1,452    
Total loans:        
Individually analyzed loans 1,262 331    
Collectively analyzed loans 253,864 258,678    
Total gross loans 255,126 259,009    
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans        
Allowance for credit losses:        
Individually analyzed loans 0 0    
Collectively analyzed loans 6 7    
Total loans:        
Individually analyzed loans 0 0    
Collectively analyzed loans 2,895 3,404    
Total gross loans 2,895 3,404    
Financial Asset Acquired with Credit Deterioration        
Allowance for credit losses:        
Total 46 33    
Total loans:        
Total gross loans 10,442 11,686    
Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family        
Allowance for credit losses:        
Total 3 4    
Total loans:        
Total gross loans 1,267 1,815    
Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily        
Allowance for credit losses:        
Total 0 0    
Total loans:        
Total gross loans 0 0    
Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate        
Allowance for credit losses:        
Total 29 29    
Total loans:        
Total gross loans 7,891 9,425    
Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction        
Allowance for credit losses:        
Total 0 0    
Total loans:        
Total gross loans 0 0    
Financial Asset Acquired with Credit Deterioration | Commercial business loans        
Allowance for credit losses:        
Total 14 0    
Total loans:        
Total gross loans 1,284 300    
Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances        
Allowance for credit losses:        
Total 0 0    
Total loans:        
Total gross loans 0 146    
Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans        
Allowance for credit losses:        
Total 0 0    
Total loans:        
Total gross loans $ 0 $ 0    
v3.25.4
Loans Receivable and Allowance for Credit Losses - Loans Modified (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount $ 24,156 $ 7,166 $ 8,595
% of Total Class of Loans Receivable 0.29% 0.09% 0.10%
Interest Rate Reduction      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount $ 673 $ 1,536  
Term Extension      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 16,395 5,630 $ 3,595
Combination of Term Extension and Interest Rate Reduction      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 7,088    
Combination of Term Extension, Interest Rate Reduction and Principal Forgiveness      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     5,000
Real estate loans | Commercial real estate      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount $ 12,385 $ 1,536 $ 1,038
% of Total Class of Loans Receivable 0.49% 0.07% 0.00%
Financing receivable, term extension     12 months
Real estate loans | Commercial real estate | Minimum      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable, term extension 15 months    
Real estate loans | Commercial real estate | Maximum      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable, term extension 17 months    
Real estate loans | Commercial real estate | Interest Rate Reduction      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount $ 0 $ 1,536  
Real estate loans | Commercial real estate | Term Extension      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 9,395 0 $ 1,038
Real estate loans | Commercial real estate | Combination of Term Extension and Interest Rate Reduction      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 2,990    
Real estate loans | Commercial real estate | Combination of Term Extension, Interest Rate Reduction and Principal Forgiveness      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     0
Real estate loans | Construction      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     $ 2,317
% of Total Class of Loans Receivable     0.50%
Financing receivable, term extension     12 months
Real estate loans | Construction | Term Extension      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     $ 2,317
Real estate loans | Construction | Combination of Term Extension, Interest Rate Reduction and Principal Forgiveness      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     0
Commercial business loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount $ 11,771 $ 5,630 $ 5,240
% of Total Class of Loans Receivable 1.54% 0.91% 1.00%
Financing receivable, term extension     12 months
Commercial business loans | Minimum      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable, term extension 12 months 15 months  
Commercial business loans | Maximum      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable, term extension 60 months 60 months  
Commercial business loans | Interest Rate Reduction      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount $ 673 $ 0  
Commercial business loans | Term Extension      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 7,000 $ 5,630 $ 240
Commercial business loans | Combination of Term Extension and Interest Rate Reduction      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount $ 4,098    
Commercial business loans | Combination of Term Extension, Interest Rate Reduction and Principal Forgiveness      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     $ 5,000
v3.25.4
Loans Receivable and Allowance for Credit Losses - Loans Modified, Aging Analysis (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount $ 24,124 $ 6,397 $ 8,506
Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 22,816 3,279 3,352
30-59 Days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 0 39 0
60-89 Days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 0 0 4,917
90 Days or More      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 0 0 0
Non-accrual      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 1,308 3,079 237
Real estate loans | Commercial real estate      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 12,328 2,549 1,035
Real estate loans | Commercial real estate | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 12,328 1,520 1,035
Real estate loans | Commercial real estate | 30-59 Days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 0 0 0
Real estate loans | Commercial real estate | 60-89 Days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 0 0 0
Real estate loans | Commercial real estate | 90 Days or More      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 0 0 0
Real estate loans | Commercial real estate | Non-accrual      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 0 1,029 0
Real estate loans | Construction      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     2,317
Real estate loans | Construction | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     2,317
Real estate loans | Construction | 30-59 Days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     0
Real estate loans | Construction | 60-89 Days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     0
Real estate loans | Construction | 90 Days or More      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     0
Real estate loans | Construction | Non-accrual      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount     0
Commercial business loans      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 11,796 3,848 5,154
Commercial business loans | Current      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 10,488 1,759 0
Commercial business loans | 30-59 Days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 0 39 0
Commercial business loans | 60-89 Days      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 0 0 4,917
Commercial business loans | 90 Days or More      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount 0 0 0
Commercial business loans | Non-accrual      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Financing receivable modified in period, amount $ 1,308 $ 2,050 $ 237
v3.25.4
Loans Receivable and Allowance for Credit Losses - Rollforward of Allowance for Loan Losses (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Allowance for loan losses:      
Balance at beginning of period $ 59,958 $ 55,096 $ 52,803
Initial allowance related to PCD loans 3,202 0 0
Provision for credit losses 9,822 14,451 4,787
Recoveries 1,443 609 1,000
Charge-offs (7,224) (10,198) (3,494)
Balance at end of period 67,201 59,958 55,096
Real estate loans | One-to-four family      
Allowance for loan losses:      
Balance at beginning of period 13,173 13,017 11,802
Initial allowance related to PCD loans 0    
Provision for credit losses 37 147 1,783
Recoveries 73 11 17
Charge-offs 0 (2) (585)
Balance at end of period 13,283 13,173 13,017
Real estate loans | Multifamily      
Allowance for loan losses:      
Balance at beginning of period 9,542 8,742 7,877
Initial allowance related to PCD loans 0    
Provision for credit losses 1,105 800 865
Recoveries 0 0 0
Charge-offs 0 0 0
Balance at end of period 10,647 9,542 8,742
Real estate loans | Commercial real estate      
Allowance for loan losses:      
Balance at beginning of period 15,969 15,757 18,111
Initial allowance related to PCD loans 0    
Provision for credit losses 2,741 296 (2,225)
Recoveries 1 36 21
Charge-offs (119) (120) (150)
Balance at end of period 18,592 15,969 15,757
Real estate loans | Construction      
Allowance for loan losses:      
Balance at beginning of period 6,703 7,758 6,425
Initial allowance related to PCD loans 0    
Provision for credit losses (36) (1,059) 1,333
Recoveries 3 4 0
Charge-offs (53) 0 0
Balance at end of period 6,617 6,703 7,758
Commercial business loans      
Allowance for loan losses:      
Balance at beginning of period 13,112 7,923 6,897
Initial allowance related to PCD loans 3,202    
Provision for credit losses 6,071 14,467 2,765
Recoveries 1,269 536 879
Charge-offs (6,887) (9,814) (2,618)
Balance at end of period 16,767 13,112 7,923
Home equity loans and advances | Home equity loans and advances      
Allowance for loan losses:      
Balance at beginning of period 1,452 1,892 1,681
Initial allowance related to PCD loans 0    
Provision for credit losses (253) (459) 160
Recoveries 90 19 77
Charge-offs 0 0 (26)
Balance at end of period 1,289 1,452 1,892
Home equity loans and advances | Other consumer loans      
Allowance for loan losses:      
Balance at beginning of period 7 7 10
Initial allowance related to PCD loans 0    
Provision for credit losses 157 259 106
Recoveries 7 3 6
Charge-offs (165) (262) (115)
Balance at end of period $ 6 $ 7 $ 7
v3.25.4
Loans Receivable and Allowance for Credit Losses - Loans Individually Evaluated for Impairment (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Recorded Investment    
With no allowance recorded $ 37,623 $ 37,942
With a specific allowance recorded 0 0
Total loans 37,623 37,942
Unpaid Principal Balance    
With no allowance recorded 45,259 42,932
With a specific allowance recorded 0 0
Unpaid principal balance 45,259 42,932
Specific Allowance    
With no allowance recorded 0 0
With a specific allowance recorded 0  
Specific allowance 0 0
Real estate loans | One-to-four family    
Recorded Investment    
With no allowance recorded 10,988 9,167
Total loans 10,988 9,167
Unpaid Principal Balance    
With no allowance recorded 10,992 9,216
Unpaid principal balance 10,992 9,216
Specific Allowance    
With no allowance recorded 0 0
Specific allowance 0 0
Real estate loans | Multifamily    
Recorded Investment    
With no allowance recorded 300 5,743
Total loans 300 5,743
Unpaid Principal Balance    
With no allowance recorded 300 5,743
Unpaid principal balance 300 5,743
Specific Allowance    
With no allowance recorded 0 0
Specific allowance 0 0
Real estate loans | Commercial real estate    
Recorded Investment    
With no allowance recorded 5,492 7,517
Total loans 5,492 7,517
Unpaid Principal Balance    
With no allowance recorded 5,618 8,089
Unpaid principal balance 5,618 8,089
Specific Allowance    
With no allowance recorded 0 0
Specific allowance 0 0
Real estate loans | Construction    
Recorded Investment    
With no allowance recorded 5,923  
Total loans 5,923  
Unpaid Principal Balance    
With no allowance recorded 5,975  
Unpaid principal balance 5,975  
Specific Allowance    
With no allowance recorded 0  
Specific allowance 0  
Commercial business loans    
Recorded Investment    
With no allowance recorded 13,658 15,184
Total loans 13,658 15,184
Unpaid Principal Balance    
With no allowance recorded 21,112 19,553
Unpaid principal balance 21,112 19,553
Specific Allowance    
With no allowance recorded 0 0
Specific allowance 0 0
Home equity loans and advances | Home equity loans and advances    
Recorded Investment    
With no allowance recorded 1,262 331
Total loans 1,262 331
Unpaid Principal Balance    
With no allowance recorded 1,262 331
Unpaid principal balance 1,262 331
Specific Allowance    
With no allowance recorded 0 0
Specific allowance $ 0 $ 0
v3.25.4
Loans Receivable and Allowance for Credit Losses - Interest Income on Impaired Loans (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Recorded Investment      
Average Recorded Investment $ 35,301 $ 28,722 $ 27,762
Interest Income Recognized 101 324 1,282
Real estate loans | One-to-four family      
Recorded Investment      
Average Recorded Investment 10,439 4,515 4,328
Interest Income Recognized 6 16 196
Real estate loans | Multifamily      
Recorded Investment      
Average Recorded Investment 2,024 2,383 420
Interest Income Recognized 0 1 19
Real estate loans | Commercial real estate      
Recorded Investment      
Average Recorded Investment 6,445 9,818 16,234
Interest Income Recognized 57 204 694
Real estate loans | Construction      
Recorded Investment      
Average Recorded Investment 4,734 0 0
Interest Income Recognized 0 0 0
Commercial business loans      
Recorded Investment      
Average Recorded Investment 10,924 11,761 6,134
Interest Income Recognized 36 100 331
Home equity loans and advances | Home equity loans and advances      
Recorded Investment      
Average Recorded Investment 735 245 646
Interest Income Recognized $ 2 $ 3 $ 42
v3.25.4
Loans Receivable and Allowance for Credit Losses - Credit Quality Indicators (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]      
Total Writeoff $ 7,224 $ 10,198 $ 3,494
Real estate loans | One-to-four family      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total Writeoff 0 2 585
Real estate loans | Multifamily      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total Writeoff 0 0 0
Real estate loans | Commercial real estate      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total Writeoff 119 120 150
Real estate loans | Construction      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total Writeoff 53 0 0
Commercial business loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total Writeoff 6,887 9,814 2,618
Home equity loans and advances | Home equity loans and advances      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total Writeoff 0 0 26
Home equity loans and advances | Other consumer loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total Writeoff 165 262 $ 115
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 1,005,660 458,563  
2025/2024, Writeoff 296 0  
2024/2023 526,871 713,672  
2024/2023, Writeoff 647 74  
2023/2022 709,362 1,833,360  
2023/2022, Writeoff 984 288  
2022/2021 1,692,333 1,547,464  
20220/2021, Writeoff 2,267 260  
2021/2020 1,442,790 613,527  
2021/2020, Writeoff 838 0  
Prior 2,469,245 2,283,179  
Prior, Writeoff 2,192 3,884  
Revolving Loans 325,533 350,783  
Revolving Loans, Writeoff 0 5,692  
Revolving Loans to Term Loans 71,582 68,899  
Revolving Loans to Term Loans, Writeoff 0 0  
Total 8,243,376 7,869,447  
Total Writeoff 7,224 10,198  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 93,590 112,748  
2025/2024, Writeoff 0 0  
2024/2023 105,510 156,261  
2024/2023, Writeoff 0 0  
2023/2022 150,438 757,906  
2023/2022, Writeoff 0 0  
2022/2021 708,500 747,128  
20220/2021, Writeoff 0 0  
2021/2020 688,327 251,417  
2021/2020, Writeoff 0 0  
Prior 811,887 685,477  
Prior, Writeoff 0 2  
Revolving Loans 0 0  
Revolving Loans, Writeoff 0 0  
Revolving Loans to Term Loans 0 0  
Revolving Loans to Term Loans, Writeoff 0 0  
Total 2,558,252 2,710,937  
Total Writeoff 0 2  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family | Pass      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 93,590 112,748  
2024/2023 104,411 154,862  
2023/2022 148,597 755,791  
2022/2021 705,476 745,505  
2021/2020 687,522 250,819  
Prior 807,680 681,085  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 2,547,276 2,700,810  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family | Special mention      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 0  
2023/2022 0 0  
2022/2021 0 0  
2021/2020 0 0  
Prior 0 0  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 0 0  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | One-to-four family | Substandard      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 1,099 1,399  
2023/2022 1,841 2,115  
2022/2021 3,024 1,623  
2021/2020 805 598  
Prior 4,207 4,392  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 10,976 10,127  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 233,695 35,835  
2025/2024, Writeoff 0 0  
2024/2023 32,267 131,728  
2024/2023, Writeoff 0 0  
2023/2022 135,839 325,754  
2023/2022, Writeoff 0 0  
2022/2021 356,358 348,053  
20220/2021, Writeoff 0 0  
2021/2020 356,888 169,959  
2021/2020, Writeoff 0 0  
Prior 562,566 449,312  
Prior, Writeoff 0 0  
Revolving Loans 0 0  
Revolving Loans, Writeoff 0 0  
Revolving Loans to Term Loans 0 0  
Revolving Loans to Term Loans, Writeoff 0 0  
Total 1,677,613 1,460,641  
Total Writeoff 0 0  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily | Pass      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 233,695 35,835  
2024/2023 32,267 131,728  
2023/2022 135,839 320,011  
2022/2021 345,763 338,781  
2021/2020 316,250 169,959  
Prior 562,566 446,956  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 1,626,380 1,443,270  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily | Special mention      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 0  
2023/2022 0 0  
2022/2021 0 0  
2021/2020 40,638 0  
Prior 0 0  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 40,638 0  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Multifamily | Substandard      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 0  
2023/2022 0 5,743  
2022/2021 10,595 9,272  
2021/2020 0 0  
Prior 0 2,356  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 10,595 17,371  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 414,588 122,219  
2025/2024, Writeoff 0 0  
2024/2023 113,417 189,692  
2024/2023, Writeoff 0 0  
2023/2022 174,188 470,289  
2023/2022, Writeoff 0 0  
2022/2021 478,543 371,677  
20220/2021, Writeoff 77 0  
2021/2020 358,813 159,530  
2021/2020, Writeoff 42 0  
Prior 973,711 1,026,476  
Prior, Writeoff 0 120  
Revolving Loans 0 0  
Revolving Loans, Writeoff 0 0  
Revolving Loans to Term Loans 0 0  
Revolving Loans to Term Loans, Writeoff 0 0  
Total 2,513,260 2,339,883  
Total Writeoff 119 120  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate | Pass      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 410,896 122,219  
2024/2023 113,417 189,692  
2023/2022 173,838 454,357  
2022/2021 459,278 370,684  
2021/2020 357,327 153,058  
Prior 923,667 920,255  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 2,438,423 2,210,265  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate | Special mention      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 0  
2023/2022 0 994  
2022/2021 7,007 0  
2021/2020 0 2,776  
Prior 9,222 33,737  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 16,229 37,507  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Commercial real estate | Substandard      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 3,692 0  
2024/2023 0 0  
2023/2022 350 14,938  
2022/2021 12,258 993  
2021/2020 1,486 3,696  
Prior 40,822 72,484  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 58,608 92,111  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 128,667 64,631  
2025/2024, Writeoff 0 0  
2024/2023 118,823 163,466  
2024/2023, Writeoff 0 0  
2023/2022 148,879 210,033  
2023/2022, Writeoff 0 0  
2022/2021 73,069 35,443  
20220/2021, Writeoff 53 0  
2021/2020 0 0  
2021/2020, Writeoff 0 0  
Prior 0 0  
Prior, Writeoff 0 0  
Revolving Loans 0 0  
Revolving Loans, Writeoff 0 0  
Revolving Loans to Term Loans 0 0  
Revolving Loans to Term Loans, Writeoff 0 0  
Total 469,438 473,573  
Total Writeoff 53 0  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction | Pass      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 128,667 64,631  
2024/2023 118,823 163,466  
2023/2022 146,996 198,938  
2022/2021 67,146 35,443  
2021/2020 0 0  
Prior 0 0  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 461,632 462,478  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction | Special mention      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 0  
2023/2022 0 0  
2022/2021 0 0  
2021/2020 0 0  
Prior 0 0  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 0 0  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Real estate loans | Construction | Substandard      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 0  
2023/2022 1,883 11,095  
2022/2021 5,923 0  
2021/2020 0 0  
Prior 0 0  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 7,806 11,095  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 112,889 105,272  
2025/2024, Writeoff 295 0  
2024/2023 143,768 57,221  
2024/2023, Writeoff 634 0  
2023/2022 88,102 51,638  
2023/2022, Writeoff 926 167  
2022/2021 60,223 29,481  
20220/2021, Writeoff 2,097 195  
2021/2020 25,428 23,647  
2021/2020, Writeoff 753 0  
Prior 48,988 45,422  
Prior, Writeoff 2,182 3,760  
Revolving Loans 287,394 309,319  
Revolving Loans, Writeoff 0 5,692  
Revolving Loans to Term Loans 0 0  
Revolving Loans to Term Loans, Writeoff 0 0  
Total 766,792 622,000  
Total Writeoff 6,887 9,814  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans | Pass      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 111,377 105,272  
2024/2023 142,106 57,038  
2023/2022 86,839 50,164  
2022/2021 58,117 28,995  
2021/2020 24,846 22,253  
Prior 41,814 38,997  
Revolving Loans 266,563 281,289  
Revolving Loans to Term Loans 0 0  
Total 731,662 584,008  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans | Special mention      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 0  
2023/2022 0 108  
2022/2021 0 0  
2021/2020 0 294  
Prior 44 106  
Revolving Loans 100 2,371  
Revolving Loans to Term Loans 0 0  
Total 144 2,879  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans | Substandard      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 1,512 0  
2024/2023 1,662 183  
2023/2022 1,263 1,366  
2022/2021 2,106 486  
2021/2020 582 1,100  
Prior 7,130 6,319  
Revolving Loans 20,731 25,659  
Revolving Loans to Term Loans 0 0  
Total 34,986 35,113  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Commercial business loans | Doubtful      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0    
2024/2023 0    
2023/2022 0    
2022/2021 0    
2021/2020 0    
Prior 0    
Revolving Loans 0    
Revolving Loans to Term Loans 0    
Total 0    
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 19,850 14,999  
2025/2024, Writeoff 0 0  
2024/2023 13,049 15,219  
2024/2023, Writeoff 0 0  
2023/2022 11,867 17,655  
2023/2022, Writeoff 0 0  
2022/2021 15,616 15,674  
20220/2021, Writeoff 0 0  
2021/2020 13,334 8,974  
2021/2020, Writeoff 0 0  
Prior 72,043 76,429  
Prior, Writeoff 0 0  
Revolving Loans 37,785 41,160  
Revolving Loans, Writeoff 0 0  
Revolving Loans to Term Loans 71,582 68,899  
Revolving Loans to Term Loans, Writeoff 0 0  
Total 255,126 259,009  
Total Writeoff 0 0  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances | Pass      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 19,850 14,999  
2024/2023 13,049 15,169  
2023/2022 11,818 17,655  
2022/2021 15,368 15,674  
2021/2020 13,334 8,974  
Prior 71,446 76,210  
Revolving Loans 37,417 41,098  
Revolving Loans to Term Loans 71,582 68,899  
Total 253,864 258,678  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances | Special mention      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 0  
2023/2022 0 0  
2022/2021 0 0  
2021/2020 0 0  
Prior 0 0  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 0 0  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Home equity loans and advances | Substandard      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 50  
2023/2022 49 0  
2022/2021 248 0  
2021/2020 0 0  
Prior 597 219  
Revolving Loans 368 62  
Revolving Loans to Term Loans 0 0  
Total 1,262 331  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 2,381 2,859  
2025/2024, Writeoff 1 0  
2024/2023 37 85  
2024/2023, Writeoff 13 74  
2023/2022 49 85  
2023/2022, Writeoff 58 121  
2022/2021 24 8  
20220/2021, Writeoff 40 65  
2021/2020 0 0  
2021/2020, Writeoff 43 0  
Prior 50 63  
Prior, Writeoff 10 2  
Revolving Loans 354 304  
Revolving Loans, Writeoff 0 0  
Revolving Loans to Term Loans 0 0  
Revolving Loans to Term Loans, Writeoff 0 0  
Total 2,895 3,404  
Total Writeoff 165 262  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans | Pass      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 2,381 2,859  
2024/2023 37 85  
2023/2022 49 85  
2022/2021 24 8  
2021/2020 0 0  
Prior 50 63  
Revolving Loans 354 304  
Revolving Loans to Term Loans 0 0  
Total 2,895 3,404  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans | Special mention      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 0  
2023/2022 0 0  
2022/2021 0 0  
2021/2020 0 0  
Prior 0 0  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total 0 0  
Financial Asset, Other than Financial Asset Acquired with Credit Deterioration | Home equity loans and advances | Other consumer loans | Substandard      
Financing Receivable, Credit Quality Indicator [Line Items]      
2025/2024 0 0  
2024/2023 0 0  
2023/2022 0 0  
2022/2021 0 0  
2021/2020 0 0  
Prior 0 0  
Revolving Loans 0 0  
Revolving Loans to Term Loans 0 0  
Total $ 0 $ 0  
v3.25.4
Office Properties and Equipment, net - Schedule of Office Properties and Equipment (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Property, Plant and Equipment [Line Items]    
Office property and equipment, gross $ 169,244 $ 160,315
Less accumulated depreciation and amortization (86,259) (78,543)
Total office properties and equipment, net 82,985 81,772
Land    
Property, Plant and Equipment [Line Items]    
Office property and equipment, gross 14,290 14,623
Buildings    
Property, Plant and Equipment [Line Items]    
Office property and equipment, gross 30,209 29,910
Land and building improvements    
Property, Plant and Equipment [Line Items]    
Office property and equipment, gross 53,795 49,737
Leasehold improvements    
Property, Plant and Equipment [Line Items]    
Office property and equipment, gross 30,284 28,258
Furniture and equipment    
Property, Plant and Equipment [Line Items]    
Office property and equipment, gross $ 40,666 $ 37,787
v3.25.4
Office Properties and Equipment, net - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Property, Plant and Equipment [Line Items]      
Facility, held-for-sale $ 1.2    
Depreciation, depletion and amortization 8.6 $ 8.2 $ 7.8
Land and building improvements      
Property, Plant and Equipment [Line Items]      
Property, plant and equipment, additions $ 1.7 $ 1.0  
v3.25.4
Leases - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Leases [Abstract]    
Operating lease, weighted average remaining lease term 5 years 6 months 5 years 8 months 12 days
Operating lease, weighted average discount rate 3.39% 3.30%
Lease, cost $ 3.2 $ 2.8
v3.25.4
Leases - Operating Lease Payment Obligations (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Leases [Abstract]    
One year or less $ 4,658 $ 4,666
After one year to two years 3,850 4,232
After two years to three years 3,283 3,272
After three years to four years 2,296 2,809
After four years to five years 1,149 1,899
Thereafter 2,953 2,742
Total undiscounted cash flows 18,189 19,620
Discount on cash flows (1,666) (1,796)
Total lease liability $ 16,523 $ 17,824
v3.25.4
Goodwill and Intangible Assets - Schedule of Goodwill and Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets [Line Items]    
Goodwill $ 110,715 $ 110,715
Goodwill and intangible assets 120,302 121,008
Core deposit intangibles    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets 6,946 8,964
Other intangible assets    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets 1,248 0
Mortgage servicing rights    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets $ 1,393 $ 1,329
v3.25.4
Goodwill and Intangible Assets - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangible assets $ 2,171 $ 2,191 $ 2,350
Mortgage servicing rights      
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangible assets 214 241 239
Core deposit intangibles      
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangible assets 2,000 2,200 2,400
Other intangible assets      
Finite-Lived Intangible Assets [Line Items]      
Amortization of intangible assets $ 152 $ 0 $ 0
v3.25.4
Goodwill and Intangible Assets - Schedule of Amortization of Core Deposit Intangibles (Details) - Core deposit intangibles - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Core Deposit Intangible Amortization    
2026 $ 1,829  
2027 1,615  
2028 1,361  
2029 994  
2030 657  
Thereafter 490  
Total $ 6,946 $ 8,964
v3.25.4
Deposits - Schedule of Deposits (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Balance    
Non-interest-bearing demand $ 1,517,399 $ 1,438,030
Interest-bearing demand 1,985,871 2,021,312
Money market accounts 1,465,028 1,241,691
Savings and club deposits 623,444 652,501
Certificates of deposit 2,852,337 2,742,615
Total deposits $ 8,444,079 $ 8,096,149
Weighted Average Rate    
Interest-bearing demand 1.99% 2.19%
Money market accounts 2.59% 2.82%
Savings and club deposits 0.47% 0.75%
Certificates of deposit 3.80% 4.24%
Total deposits 2.23% 2.47%
v3.25.4
Deposits - Narrative (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Deposits [Abstract]    
Time deposits, $100,000 or more $ 723.3 $ 677.3
Brokered deposits 46.2 50.1
Aggregate amount of certificates of deposit exceeding threshold amount $ 262.1 $ 186.1
v3.25.4
Deposits - Schedule of Deposit Maturities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Deposits [Abstract]    
One year or less $ 2,468,641 $ 2,422,249
After one year to two years 263,211 281,961
After two years to three years 86,017 21,909
After three years to four years 14,037 8,193
After four years 20,431 8,303
Total term certificate accounts $ 2,852,337 $ 2,742,615
v3.25.4
Deposits - Interest Expense on Deposits (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Assets Sold under Agreements to Repurchase [Line Items]      
Interest expense on deposits $ 197,374 $ 202,383 $ 125,162
Demand (including money market accounts)      
Assets Sold under Agreements to Repurchase [Line Items]      
Interest expense on deposits 81,803 88,337 62,070
Savings and club deposits      
Assets Sold under Agreements to Repurchase [Line Items]      
Interest expense on deposits 4,015 5,130 2,231
Certificates of deposit      
Assets Sold under Agreements to Repurchase [Line Items]      
Interest expense on deposits $ 111,556 $ 108,916 $ 60,861
v3.25.4
Borrowings - Schedule of Borrowed Funds (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Balance $ 1,183,472 $ 1,080,600
Weighted Average Interest Rate 4.19% 4.44%
FHLB advances    
Debt Instrument [Line Items]    
Balance $ 1,176,415 $ 1,073,564
Weighted Average Interest Rate 4.17% 4.42%
Junior subordinated debentures    
Debt Instrument [Line Items]    
Balance $ 7,057 $ 7,036
Weighted Average Interest Rate 6.92% 7.56%
v3.25.4
Borrowings - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2021
Debt Instrument [Line Items]        
Balance $ 1,183,472,000 $ 1,080,600,000    
Unused line of credit 150,000,000.0 150,000,000.0    
Advances from federal home loan banks $ 3,200,000,000 $ 3,600,000,000    
Weighted Average Interest Rate 4.19% 4.44%    
Proceeds from long-term borrowings $ 175,333,000 $ 271,205,000 $ 536,113,000  
Overnight lines of credit        
Debt Instrument [Line Items]        
Balance 0 0    
Interest expense, debt 45,000 18,000 923,000  
Overnight lines of credit | Revolving Credit Facility        
Debt Instrument [Line Items]        
Interest expense, debt 0 0 95,000  
Line of credit facility, maximum borrowing capacity       $ 30,000,000.0
Repayments of long-term debt     1,500,000  
Proceeds from long-term borrowings     1,500,000  
Securities sold under agreements to repurchase        
Debt Instrument [Line Items]        
Advances from federal home loan banks 16,200,000 15,400,000    
FHLB advances        
Debt Instrument [Line Items]        
Balance 1,176,415,000 1,073,564,000    
Interest expense, debt $ 51,300,000 $ 70,400,000 61,500,000  
Weighted Average Interest Rate 4.17% 4.42%    
FHLB advances | Interest Rate Swap        
Debt Instrument [Line Items]        
Notional amount of derivative $ 393,700,000 $ 378,700,000    
Notes payable        
Debt Instrument [Line Items]        
Interest expense, debt 0 0 823,000  
Debt instrument, face amount       $ 30,000,000.0
Weighted Average Interest Rate       3.35%
Junior subordinated debentures        
Debt Instrument [Line Items]        
Balance 7,057,000 7,036,000    
Interest expense, debt $ 562,000 $ 640,000 $ 624,000  
Weighted Average Interest Rate 6.92% 7.56%    
Basis spread on variable rate 2.95%      
Interest rate, effective percentage 6.92% 7.56%    
v3.25.4
Borrowings - Schedule of Contractual Maturity of Borrowings (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Debt Instrument [Line Items]    
Total FHLB advances $ 1,183,472 $ 1,080,600
FHLB advances    
Debt Instrument [Line Items]    
One year or less 525,726  
After one year to two years 225,139  
After two years to three years 180,550  
After three years to four years 225,000  
After four years 20,000  
Total FHLB advances $ 1,176,415 $ 1,073,564
v3.25.4
Stockholders' Equity - Narrative (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Sep. 05, 2025
shares
May 25, 2023
shares
Dec. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
$ / shares
shares
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]          
Number of shares authorized to be repurchased (in shares) 1,800,000 2,000,000      
Stock repurchase program, percent of common stock 1.70% 1.90%      
Stock repurchase program, remaining number of shares authorized to be repurchased (in shares)     926,696    
Treasury stock, shares purchased (in shares)     873,304 365,116 4,242,693
Cost method of shares repurchase | $     $ 13,351 $ 5,894 $ 80,497
Cost method of shares repurchased (in dollars per share) | $ / shares     $ 15.29 $ 16.14 $ 18.97
Parent Company          
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]          
Capital required for capital adequacy to risk weighted assets     0.080 0.0800  
Tier one risk based capital required for capital adequacy to risk weighted assets     0.0600 0.0600  
Common equity tier one capital required for capital adequacy to risk weighted assets     0.045 0.0450  
Tier one leverage capital required for capital adequacy to average assets     0.0400 0.0400  
Capital conservation buffer, ratio     2.50%    
Columbia Bank          
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]          
Capital required for capital adequacy to risk weighted assets     0.0800 0.0800  
Tier one risk based capital required for capital adequacy to risk weighted assets     0.0600 0.0600  
Common equity tier one capital required for capital adequacy to risk weighted assets     0.0450 0.0450  
Tier one leverage capital required for capital adequacy to average assets     0.0400 0.0400  
Capital required to be well capitalized to risk weighted assets, ratio     0.1000 0.1000  
Tier one risk based capital required to be well capitalized to risk weighted assets, ratio     0.0800 0.0800  
Common equity tier one capital required to be well-capitalized to risk weighted assets, ratio     0.0650 0.0650  
Tier one leverage capital required to be well capitalized to average assets, ratio     0.0500 0.0500  
v3.25.4
Stockholders' Equity - Actual Capital Amounts and Ratios (Details)
$ in Thousands
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Parent Company    
Actual, Amount    
Total capital $ 1,196,057 $ 1,131,159
Tier one capital 1,125,002 1,067,445
Common equity tier one capital 1,117,785 1,060,228
Tier one leverage capital $ 1,125,002 $ 1,067,445
Actual, Ratio    
Capital to risk weighted assets 0.1492 0.1420
Tier one risk based capital to risk weighted assets 0.1403 0.1340
Common equity tier one capital 0.1394 0.1331
Tier one leverage capital to average assets 0.1027 0.1002
Minimum Capital Adequacy Requirements, Amount    
Capital required for capital adequacy $ 641,506 $ 637,077
Tier one risk based capital required for capital adequacy 481,129 477,808
Common equity tier one capital required for capital adequacy 360,847 358,356
Tier one leverage capital required for capital adequacy $ 438,061 $ 426,319
Minimum Capital Adequacy Requirements, Ratio    
Capital required for capital adequacy to risk weighted assets 0.080 0.0800
Tier one risk based capital required for capital adequacy to risk weighted assets 0.0600 0.0600
Common equity tier one capital required for capital adequacy to risk weighted assets 0.045 0.0450
Tier one leverage capital required for capital adequacy to average assets 0.0400 0.0400
Minimum Capital Adequacy Requirements With Capital Conservation Buffer, Amount    
Capital required for capital adequacy with capital buffer $ 841,976 $ 836,164
Tier one risk based capital required for capital adequacy with capital buffer 681,600 676,895
Common equity tier one risk based capital required for capital adequacy with capital buffer 561,317 557,443
Tier one leverage capital required for capital adequacy with capital buffer to average assets $ 438,061 $ 426,319
Minimum Capital Adequacy Requirements With Capital Conservation Buffer, Ratio    
Capital required for capital adequacy with capital buffer to risk weighted assets 0.1050 0.1050
Tier one risk based capital required for capital adequacy with capital buffer to risk weighted assets 0.0850 0.0850
Common equity tier one risk based capital requirement for capital adequacy with capital buffer to risk weighted assets 0.0700 0.0700
Tier one leverage capital requirement for capital adequacy with capital buffer to average assets 4.00% 4.00%
Columbia Bank    
Actual, Amount    
Total capital $ 1,129,574 $ 1,090,717
Tier one capital 1,058,519 1,027,003
Common equity tier one capital 1,058,519 1,027,003
Tier one leverage capital $ 1,058,519 $ 1,027,003
Actual, Ratio    
Capital to risk weighted assets 0.1409 0.1441
Tier one risk based capital to risk weighted assets 0.1320 0.1356
Common equity tier one capital 0.1320 0.1356
Tier one leverage capital to average assets 0.0967 0.0964
Minimum Capital Adequacy Requirements, Amount    
Capital required for capital adequacy $ 641,534 $ 605,734
Tier one risk based capital required for capital adequacy 481,151 454,300
Common equity tier one capital required for capital adequacy 360,863 340,725
Tier one leverage capital required for capital adequacy $ 438,029 $ 425,935
Minimum Capital Adequacy Requirements, Ratio    
Capital required for capital adequacy to risk weighted assets 0.0800 0.0800
Tier one risk based capital required for capital adequacy to risk weighted assets 0.0600 0.0600
Common equity tier one capital required for capital adequacy to risk weighted assets 0.0450 0.0450
Tier one leverage capital required for capital adequacy to average assets 0.0400 0.0400
Minimum Capital Adequacy Requirements With Capital Conservation Buffer, Amount    
Capital required for capital adequacy with capital buffer $ 842,014 $ 795,025
Tier one risk based capital required for capital adequacy with capital buffer 681,630 643,592
Common equity tier one risk based capital required for capital adequacy with capital buffer 561,342 530,017
Tier one leverage capital required for capital adequacy with capital buffer to average assets $ 438,029 $ 425,935
Minimum Capital Adequacy Requirements With Capital Conservation Buffer, Ratio    
Capital required for capital adequacy with capital buffer to risk weighted assets 0.1050 0.1050
Tier one risk based capital required for capital adequacy with capital buffer to risk weighted assets 0.0850 0.0850
Common equity tier one risk based capital requirement for capital adequacy with capital buffer to risk weighted assets 0.0700 0.0700
Tier one leverage capital requirement for capital adequacy with capital buffer to average assets 4.00% 4.00%
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount    
Capital required to be well capitalized, amount $ 801,918 $ 757,167
Tier one risk based capital required to be well capitalized, amount 641,534 605,734
Common equity tier one capital required to be well-capitalized, amount 521,247 492,159
Tier one leverage capital required to be well capitalized, amount $ 547,536 $ 532,419
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio    
Capital required to be well capitalized to risk weighted assets, ratio 0.1000 0.1000
Tier one risk based capital required to be well capitalized to risk weighted assets, ratio 0.0800 0.0800
Common equity tier one capital required to be well-capitalized to risk weighted assets, ratio 0.0650 0.0650
Tier one leverage capital required to be well capitalized to average assets, ratio 0.0500 0.0500
v3.25.4
Employee Benefit Plans - Narrative (Details)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Mar. 11, 2025
$ / shares
shares
Mar. 03, 2025
$ / shares
shares
Dec. 13, 2024
$ / shares
shares
Mar. 07, 2024
$ / shares
shares
Mar. 06, 2024
$ / shares
shares
Apr. 30, 2018
USD ($)
shares
Dec. 31, 2025
USD ($)
age
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
shares
Dec. 31, 2023
USD ($)
shares
Jun. 06, 2019
shares
Defined Benefit Plan Disclosure [Line Items]                    
Years of employment benefits are based upon             5 years      
Bank-owned life insurance ("BOLI")             $ 283,094 $ 274,908    
Bank-owned life insurance             8,186 7,319 $ 10,126  
Defined contribution plan, cost             2,900 2,100 3,000  
Employee stock ownership plan expense             $ 3,414 $ 3,808 4,095  
Number of shares authorized (in shares) | shares                   7,949,996
Equity instruments other than options, grants in period (in dollars per share) | $ / shares   $ 16.23 $ 16.93   $ 16.49          
Grants in period (in shares) | shares   454,327 18,810   286,265   454,327 305,075    
Grants in period (in dollars per share) | $ / shares   $ 6.24 $ 6.19   $ 6.13          
Options exercised in period, intrinsic value             $ 4 $ 261 154  
Restricted Stock                    
Defined Benefit Plan Disclosure [Line Items]                    
Number of shares authorized (in shares) | shares                   2,271,427
Equity instruments other than options, grants in period (in shares) | shares 32,070 177,186 38,389 27,162 185,279   209,256 250,830    
Equity instruments other than options, grants in period (in dollars per share) | $ / shares $ 15.01 $ 16.23 $ 16.93 $ 16.57 $ 16.49   $ 16.04 $ 16.57    
Number of shares available for grant (in shares) | shares             207,594      
Share-based payment expense             $ 2,700 $ 3,500 $ 4,100  
Equity instrument other than options, nonvested (in shares) | shares             438,894 442,559 435,541  
Nonvested award, excluding option, cost not yet recognized             $ 3,100      
Cost not yet recognized, period for recognition             1 year 2 months 12 days      
Restricted Stock | Share-based Payment Arrangement, Tranche One                    
Defined Benefit Plan Disclosure [Line Items]                    
Award vesting period (in years)             1 year      
Stock Option                    
Defined Benefit Plan Disclosure [Line Items]                    
Number of shares authorized (in shares) | shares                   5,678,569
Number of shares available for grant (in shares) | shares             1,171,755      
Award vesting period (in years)   3 years 3 years   3 years          
Share-based payment expense             $ 2,100 $ 3,000 $ 3,900  
Equity instrument other than options, nonvested (in shares) | shares             659,453      
Nonvested award, excluding option, cost not yet recognized             $ 2,600      
Cost not yet recognized, period for recognition             2 years      
Expected term   6 years 5 years   6 years          
Risk free interest rate   4.02% 4.25%   4.12%          
Expected volatility rate   31.10% 32.89%   29.13%          
Expected dividend rate   0.00% 0.00%   0.00%          
Expiration period (in years)   10 years 10 years   10 years          
Stock Option | Share-based Payment Arrangement, Tranche One                    
Defined Benefit Plan Disclosure [Line Items]                    
Award vesting period (in years)   1 year 1 year   1 year          
Columbia Bank Employee Stock Ownership Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Proceeds from repayments of loans by employee stock ownership plans           $ 45,400        
Loan term           20 years 20 years      
Shares contributed to ESOP (in shares) | shares           4,542,855        
Fixed interest rate           4.75%        
Employee stock ownership plan expense             $ 3,400 3,800 4,100  
Minimum                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined contribution plan, employer matching contribution, percent of match             3.00%      
Minimum | Restricted Stock                    
Defined Benefit Plan Disclosure [Line Items]                    
Award vesting period (in years)             1 year      
Maximum                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined contribution plan, employer matching contribution, percent of match             4.50%      
Maximum | Restricted Stock                    
Defined Benefit Plan Disclosure [Line Items]                    
Award vesting period (in years)             5 years      
Acquired RSI Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined benefit plan, net periodic benefit cost (credit)             $ 0 0    
RIM Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined benefit plan, funded (unfunded) status of plan             (13,534) (12,812)    
Defined benefit plan, benefit obligation             13,534 12,812 13,550  
Defined benefit plan, net periodic benefit cost (credit)             884 1,004 966  
Defined contribution plan, cost             1 12 40  
SERP compensation (benefit) expense             40 46 (32)  
RIM Plan | Director                    
Defined Benefit Plan Disclosure [Line Items]                    
SERP compensation (benefit) expense             194 96 0  
RIM Plan | Acquired Roselle Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined benefit plan, net periodic benefit cost (credit)             18 19 20  
RIM Plan | Acquired Freehold Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined benefit plan, net periodic benefit cost (credit)             14 4 2  
Post-retirement Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined benefit plan, funded (unfunded) status of plan             $ (22,185) $ (22,271)    
Trend rate, pre-65 (as a percent)             0.0785 0.0830    
Trend rate, post-65 (as a percent)             0.1015 0.1075    
Trend rate, through 2036 (as a percent)             0.0450      
Trend rate, through 2035 (as a percent)               0.0450    
Defined benefit plan, benefit obligation             $ 22,185 $ 22,271 21,148  
Defined benefit plan, net periodic benefit cost (credit)             1,354 1,365 1,185  
Post-retirement Plan | Acquired RSI Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined benefit plan, net periodic benefit cost (credit)                 113  
Pension Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined benefit plan, funded (unfunded) status of plan             265,749 230,873    
Defined benefit plan, benefit obligation             254,939 246,890 255,868  
Defined benefit plan, net periodic benefit cost (credit)             $ (18,136) (14,130) (13,659)  
Pension Plan | Minimum                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined contribution plan, employer matching contribution, percent of match             3.00%      
Pension Plan | Maximum                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined contribution plan, employer matching contribution, percent of match             4.50%      
Pension Plan | Acquired RSI Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined benefit plan, benefit obligation             $ 0      
Defined benefit plan, net periodic benefit cost (credit)                 (182)  
Other Pension, Postretirement and Supplemental Plans | Acquired RSI Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Liability, defined benefit plan             269 255    
Defined benefit plan, expense             20 2 11  
Other Pension, Postretirement and Supplemental Plans | Acquired Freehold Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Defined benefit plan, net periodic benefit cost (credit)             15 (1) (24)  
Defined benefit plan, annual benefit payment amount             $ 12      
Defined benefit plan, benefit payment installment period             120 months      
Liability, defined benefit plan               354    
Postemployment Retirement Benefits | Acquired RSI Plan                    
Defined Benefit Plan Disclosure [Line Items]                    
Liability, defined benefit plan             $ 161 227    
Defined benefit plan, expense             $ 7 $ 9 $ 11  
Defined benefit plan, period directors elected not to receive director fees             5 years      
Defined benefit plan, benefit payable accrual period             10 years      
Defined benefit plan, payment commencement age | age             65      
Defined benefit plan, payment commencement period from plan implementation             5 years      
v3.25.4
Employee Benefit Plans - Schedule of Change in Benefit Obligation and Plan Assets (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Plan      
Change in benefit obligation:      
Benefit obligation, beginning balance $ 246,890 $ 255,868  
Service cost 3,786 4,504 $ 4,679
Interest cost 13,092 12,784 11,637
Actuarial loss (gain) 7,396 (15,168)  
Benefits paid (16,225) (11,098)  
Impact of plan merger 0 0  
Benefit obligation, ending balance 254,939 246,890 255,868
Change in plan assets:      
Fair value of plan assets, beginning balance 477,763 453,559  
Actuarial return gain on plan assets 59,150 35,302  
Employer contributions 0 0  
Benefits paid (16,225) (11,098)  
Impact of plan merger 0 0  
Fair value of plan assets, ending balance 520,688 477,763 453,559
Funded status at end of year 265,749 230,873  
Pension Plan | Acquired RSI Plan      
Change in benefit obligation:      
Service cost     0
Interest cost     305
Benefit obligation, ending balance 0    
RIM Plan      
Change in benefit obligation:      
Benefit obligation, beginning balance 12,812 13,550  
Service cost 209 245 277
Interest cost 675 649 632
Actuarial loss (gain) 293 (1,287)  
Benefits paid (455) (345)  
Impact of plan merger 0 0  
Benefit obligation, ending balance 13,534 12,812 13,550
Change in plan assets:      
Fair value of plan assets, beginning balance 0 0  
Actuarial return gain on plan assets 0 0  
Employer contributions 455 345  
Benefits paid (455) (345)  
Impact of plan merger 0 0  
Fair value of plan assets, ending balance 0 0 0
Funded status at end of year (13,534) (12,812)  
Post-retirement Plan      
Change in benefit obligation:      
Benefit obligation, beginning balance 22,271 21,148  
Service cost 206 269 215
Interest cost 1,148 1,118 970
Actuarial loss (gain) (369) (2,150)  
Benefits paid (1,071) (617)  
Impact of plan merger 0 2,503  
Benefit obligation, ending balance 22,185 22,271 21,148
Change in plan assets:      
Fair value of plan assets, beginning balance 0 0  
Actuarial return gain on plan assets 0 0  
Employer contributions 1,071 617  
Benefits paid (1,071) (617)  
Impact of plan merger 0 0  
Fair value of plan assets, ending balance 0 0 0
Funded status at end of year (22,185) (22,271)  
Post-retirement Plan | Acquired RSI Plan      
Change in benefit obligation:      
Service cost     67
Interest cost     107
Split-Dollar Life Insurance      
Change in benefit obligation:      
Benefit obligation, beginning balance 15,791 16,957  
Service cost 229 229 277
Interest cost 864 834 818
Actuarial loss (gain) 1,203 (2,102)  
Benefits paid 0 (127)  
Impact of plan merger 0 0  
Benefit obligation, ending balance 18,087 15,791 16,957
Change in plan assets:      
Fair value of plan assets, beginning balance 0 0  
Actuarial return gain on plan assets 0 0  
Employer contributions 0 127  
Benefits paid 0 (127)  
Impact of plan merger 0 0  
Fair value of plan assets, ending balance 0 0 $ 0
Funded status at end of year $ (18,087) $ (15,791)  
v3.25.4
Employee Benefit Plans - Schedule of Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Unrecognized prior service costs $ 0 $ 0 $ 0
Unrecognized net actuarial loss (income) 23,672 40,412 59,463
Total accumulated other comprehensive loss (income) 23,672 40,412 59,463
RIM Plan      
Defined Benefit Plan Disclosure [Line Items]      
Unrecognized prior service costs 0 0 0
Unrecognized net actuarial loss (income) 998 704 2,102
Total accumulated other comprehensive loss (income) 998 704 2,102
Post-retirement Plan      
Defined Benefit Plan Disclosure [Line Items]      
Unrecognized prior service costs 0 0 0
Unrecognized net actuarial loss (income) (2,207) (1,835) 787
Total accumulated other comprehensive loss (income) (2,207) (1,835) 787
Split-Dollar Life Insurance      
Defined Benefit Plan Disclosure [Line Items]      
Unrecognized prior service costs 133 183 238
Unrecognized net actuarial loss (income) (794) (2,086) 16
Total accumulated other comprehensive loss (income) $ (661) $ (1,903) $ 254
v3.25.4
Employee Benefit Plans - Schedule of Net Periodic Benefit Cost (Income) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Acquired RSI Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Net periodic (income) benefit cost $ 0 $ 0  
Pension Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 3,786 4,504 $ 4,679
Interest cost 13,092 12,784 11,637
Expected return on plan assets (35,014) (32,701) (30,771)
Prior service cost 0 0 0
Net loss (income) 0 1,283 796
Net periodic (income) benefit cost (18,136) (14,130) (13,659)
Pension Plan | Acquired RSI Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost     0
Interest cost     305
Expected return on plan assets     (487)
Net loss (income)     0
Net periodic (income) benefit cost     (182)
RIM Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 209 245 277
Interest cost 675 649 632
Expected return on plan assets 0 0 0
Prior service cost 0 0 0
Net loss (income) 0 110 57
Net periodic (income) benefit cost 884 1,004 966
Post-retirement Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 206 269 215
Interest cost 1,148 1,118 970
Expected return on plan assets 0 0 0
Prior service cost 0 0 0
Net loss (income) 0 (22) 0
Net periodic (income) benefit cost 1,354 1,365 1,185
Post-retirement Plan | Acquired RSI Plan      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost     67
Interest cost     107
Expected return on plan assets     0
Net loss (income)     (61)
Net periodic (income) benefit cost     113
Split-Dollar Life Insurance      
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Service cost 229 229 277
Interest cost 864 834 818
Expected return on plan assets 0 0 0
Prior service cost 50 56 56
Net loss (income) (89) 0 0
Net periodic (income) benefit cost $ 1,054 $ 1,119 $ 1,151
v3.25.4
Employee Benefit Plans - Schedule of Weighted Average Actuarial Assumptions (Details)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Pension Plan      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.65% 5.76% 5.07%
Rate of compensation increase 4.50% 4.50% 4.50%
Benefit obligation 5.76% 5.07% 5.26%
Benefit obligation remeasurement rate 5.66% 5.51% 5.19%
Service cost 5.89% 5.16% 5.36%
Service cost remeasurement rate 5.89% 5.60% 5.26%
Interest cost 5.47% 4.96% 5.14%
Interest cost remeasurement rate 5.21% 5.37% 5.16%
Expected rate of return on plan assets 7.30% 7.25% 7.50%
Expected rate of return on plan assets remeasurement rate     7.50%
Rate of compensation increase 4.50% 4.50% 4.50%
Pension Plan | Acquired RSI Plan      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate     0.00%
Benefit obligation     5.24%
Expected rate of return on plan assets     7.00%
RIM Plan      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.45% 5.67% 5.01%
Rate of compensation increase 4.50% 4.50% 4.50%
Benefit obligation 5.67% 5.01% 5.21%
Service cost 5.77% 5.09% 5.28%
Interest cost 5.40% 4.89% 5.10%
Rate of compensation increase 4.50% 4.50% 3.75%
Post-retirement Plan      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.49% 5.66% 4.96%
Benefit obligation 5.66% 4.96% 5.18%
Service cost 5.88% 5.79% 5.30%
Interest cost 5.36% 4.87% 5.07%
Post-retirement Plan | Acquired RSI Plan      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate     5.16%
Benefit obligation     5.16%
Split-Dollar Life Insurance      
Defined Benefit Plan Disclosure [Line Items]      
Discount rate 5.74% 5.81% 5.11%
Rate of compensation increase 4.50% 4.50% 4.50%
Benefit obligation 5.81% 5.11% 5.31%
Service cost 5.96% 5.23% 5.41%
Interest cost 5.56% 4.99% 5.19%
Rate of compensation increase 4.50% 4.50% 3.75%
v3.25.4
Employee Benefit Plans - Schedule of Estimated Future Benefit Payments (Details)
$ in Thousands
Dec. 31, 2025
USD ($)
Pension Plan  
Defined Benefit Plan Disclosure [Line Items]  
2026 $ 13,772
2027 14,731
2028 15,619
2029 16,373
2030 17,022
2031 - 2035 90,351
RIM Plan  
Defined Benefit Plan Disclosure [Line Items]  
2026 727
2027 872
2028 945
2029 992
2030 1,021
2031 - 2035 5,266
Post-retirement Plan  
Defined Benefit Plan Disclosure [Line Items]  
2026 1,670
2027 1,771
2028 1,803
2029 1,808
2030 1,738
2031 - 2035 8,190
Split-Dollar Life Insurance  
Defined Benefit Plan Disclosure [Line Items]  
2026 656
2027 731
2028 807
2029 881
2030 953
2031 - 2035 $ 5,784
v3.25.4
Employee Benefit Plans - Schedule of Weighted Average and Target Allocations of Pension Assets (Details) - Pension Plan
Dec. 31, 2025
Dec. 31, 2024
Defined Benefit Plan Disclosure [Line Items]    
Weighted average assets allocations, percentage 100.00% 100.00%
Domestic equities    
Defined Benefit Plan Disclosure [Line Items]    
Weighted average assets allocations, percentage 34.40% 33.50%
Foreign equities    
Defined Benefit Plan Disclosure [Line Items]    
Weighted average assets allocations, percentage 11.20% 9.90%
Fixed income    
Defined Benefit Plan Disclosure [Line Items]    
Weighted average assets allocations, percentage 53.70% 54.90%
Money market mutual funds    
Defined Benefit Plan Disclosure [Line Items]    
Weighted average assets allocations, percentage 0.70% 1.70%
Minimum | Equities    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, target allocation, percent 30.00%  
Minimum | Fixed income    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, target allocation, percent 40.00%  
Minimum | Money market mutual funds    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, target allocation, percent 0.00%  
Maximum | Equities    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, target allocation, percent 60.00%  
Maximum | Fixed income    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, target allocation, percent 70.00%  
Maximum | Money market mutual funds    
Defined Benefit Plan Disclosure [Line Items]    
Plan assets, target allocation, percent 10.00%  
v3.25.4
Employee Benefit Plans - Schedule of Fair Value of Plan Assets (Details) - Pension Plan - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 520,688 $ 477,763 $ 453,559
Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 520,688 477,763  
Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Money market mutual funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 3,585 8,229  
Money market mutual funds | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 3,585 8,229  
Money market mutual funds | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Money market mutual funds | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Mutual funds - value stock fund      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 11,290 10,447  
Mutual funds - value stock fund | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 11,290 10,447  
Mutual funds - value stock fund | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Mutual funds - value stock fund | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Fixed income      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 279,384 262,148  
Fixed income | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 279,384 262,148  
Fixed income | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Fixed income | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Mutual funds - international stock      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 58,293 47,314  
Mutual funds - international stock | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 58,293 47,314  
Mutual funds - international stock | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Mutual funds - international stock | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Mutual funds - institutional stock index      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 168,136 149,625  
Mutual funds - institutional stock index | Quoted Prices in Active Markets for Identical Assets (Level 1)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 168,136 149,625  
Mutual funds - institutional stock index | Significant Other Observable Inputs (Level 2)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
Mutual funds - institutional stock index | Significant Unobservable Inputs (Level 3)      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 0 $ 0  
v3.25.4
Employee Benefit Plans - Schedule of Employee Stock Ownership Plan (Details) - USD ($)
shares in Thousands, $ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Retirement Benefits [Abstract]    
Allocated shares (in shares) 1,511 1,324
Unearned shares (in shares) 2,793 3,021
Total ESOP shares (in shares) 4,304 4,345
Fair value of unearned ESOP shares $ 43,412 $ 47,757
v3.25.4
Employee Benefit Plans - Stock Based Compensation Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Mar. 11, 2025
Mar. 03, 2025
Dec. 13, 2024
Mar. 07, 2024
Mar. 06, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Jun. 06, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of shares authorized (in shares)                 7,949,996
Equity instruments other than options, grants in period (in dollars per share)   $ 16.23 $ 16.93   $ 16.49        
Grants in period (in shares)   454,327 18,810   286,265 454,327 305,075    
Grants in period (in dollars per share)   $ 6.24 $ 6.19   $ 6.13        
Grants in period (in dollars per share)           $ 16.23 $ 16.52    
Options exercised in period, intrinsic value           $ 4 $ 261 $ 154  
Restricted Stock                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of shares authorized (in shares)                 2,271,427
Number of shares available for grant (in shares)           207,594      
Equity instruments other than options, grants in period (in shares) 32,070 177,186 38,389 27,162 185,279 209,256 250,830    
Equity instruments other than options, grants in period (in dollars per share) $ 15.01 $ 16.23 $ 16.93 $ 16.57 $ 16.49 $ 16.04 $ 16.57    
Share-based payment expense           $ 2,700 $ 3,500 $ 4,100  
Equity instrument other than options, nonvested (in shares)           438,894 442,559 435,541  
Nonvested award, excluding option, cost not yet recognized           $ 3,100      
Cost not yet recognized, period for recognition           1 year 2 months 12 days      
Stock Option                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Number of shares authorized (in shares)                 5,678,569
Number of shares available for grant (in shares)           1,171,755      
Award vesting period (in years)   3 years 3 years   3 years        
Share-based payment expense           $ 2,100 $ 3,000 $ 3,900  
Equity instrument other than options, nonvested (in shares)           659,453      
Nonvested award, excluding option, cost not yet recognized           $ 2,600      
Cost not yet recognized, period for recognition           2 years      
Expiration period (in years)   10 years 10 years   10 years        
Expected term   6 years 5 years   6 years        
Risk free interest rate   4.02% 4.25%   4.12%        
Expected volatility rate   31.10% 32.89%   29.13%        
Expected dividend rate   0.00% 0.00%   0.00%        
Minimum | Restricted Stock                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)           1 year      
Maximum | Restricted Stock                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)           5 years      
Share-based Payment Arrangement, Tranche One | Restricted Stock                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)           1 year      
Share-based Payment Arrangement, Tranche One | Stock Option                  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                  
Award vesting period (in years)   1 year 1 year   1 year        
v3.25.4
Employee Benefit Plans - Restricted Stock Activity (Details) - $ / shares
12 Months Ended
Mar. 11, 2025
Mar. 03, 2025
Dec. 13, 2024
Mar. 07, 2024
Mar. 06, 2024
Dec. 31, 2025
Dec. 31, 2024
Weighted Average Grant Date Fair Value              
Granted (in dollars per share)   $ 16.23 $ 16.93   $ 16.49    
Restricted Stock              
Number of Restricted Shares              
Beginning balance (in shares)           442,559 435,541
Granted (in shares) 32,070 177,186 38,389 27,162 185,279 209,256 250,830
Vested (in shares)           (129,634) (237,882)
Forfeited (in shares)           (83,287) (5,930)
Ending balance (in shares)           438,894 442,559
Weighted Average Grant Date Fair Value              
Beginning balance (in dollars per share)           $ 16.59 $ 16.77
Granted (in dollars per share) $ 15.01 $ 16.23 $ 16.93 $ 16.57 $ 16.49 16.04 16.57
Vested (in dollars per share)           17.44 16.88
Forfeited (in dollars per share)           16.27 17.23
Ending balance (in dollars per share)           $ 16.14 $ 16.59
v3.25.4
Employee Benefit Plans - Stock Option Activity (Details) - USD ($)
12 Months Ended
Mar. 03, 2025
Dec. 13, 2024
Mar. 06, 2024
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Number of Stock Options            
Beginning balance (in shares)       3,757,032 3,584,069  
Granted (in shares) 454,327 18,810 286,265 454,327 305,075  
Exercised (in shares)       (5,837) (86,920) (44,117)
Expired (in shares)       (108,731) (16,788)  
Forfeited (in shares)       (71,076) (28,404)  
Ending balance (in shares)       4,025,715 3,757,032 3,584,069
Options exercisable (in shares)       3,366,262    
Weighted Average Exercise Price            
Beginning balance (in dollars per share)       $ 16.22 $ 16.20  
Granted (in dollars per share)       16.23 16.52  
Exercised (in dollars per share)       16.10 15.87  
Expired (in dollars per share)       16.17 16.94  
Forfeited (in dollars per share)       16.36 16.90  
Ending balance (in dollars per share)       16.22 $ 16.22 $ 16.20
Options exercisable (in dollars per share)       $ 16.22    
Weighted Average Remaining Contractual Term (in years)            
Outstanding       4 years 9 months 18 days 5 years 4 months 24 days 6 years 1 month 6 days
Options exercisable       4 years    
Aggregate Intrinsic Value            
Outstanding       $ 0 $ 574,569 $ 11,602,267
Options exercisable       $ 0    
v3.25.4
Income Taxes - Schedule of Income Tax Expense (Benefit) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Current:      
Federal $ 1,922 $ 967 $ 3,488
State 150 762 3,102
Total current 2,072 1,729 6,590
Deferred:      
Federal 9,188 (3,426) 6,615
State 4,963 (2,560) (3,240)
Total deferred 14,151 (5,986) 3,375
Total income tax expense (benefit) $ 16,223 $ (4,257) $ 9,965
v3.25.4
Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Contingency [Line Items]      
Deferred income tax expense (benefit), related to unrealized gain (losses) on available-for-sale securities $ (10,900) $ (21,600) $ (11,500)
Reclassification adjustment of actuarial net (loss) gain included in net income (26) 378 $ 218
Included in retained earnings, no provision for income tax 21,500 21,500  
Valuation allowance 0 0  
Operating loss carryforwards 1,900 42,700  
New Jersey Division of Taxation      
Income Tax Contingency [Line Items]      
Operating loss carryforwards 173,200 236,300  
Tax credit carryforward, amount 2,200 2,200  
New York State Division of Taxation and Finance      
Income Tax Contingency [Line Items]      
Operating loss carryforwards 556 1,500  
Florida Departments of Revenue      
Income Tax Contingency [Line Items]      
Operating loss carryforwards $ 18 $ 18  
v3.25.4
Income Taxes - Schedule of Effective Tax Rate Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Amount      
U.S. federal tax at statutory tax rate $ 14,278 $ (3,341) $ 9,670
State and local income taxes, net of federal income tax effect 4,039 (1,420) (103)
Low-income housing tax credit, net of amortization (155) 152 148
ESOP fair market value adjustment 240 323 383
162(m) 39 505 549
Income from bank-owned life insurance (1,719) (1,265) (1,865)
Other, net (499) 789 1,183
Total income tax expense (benefit) $ 16,223 $ (4,257) $ 9,965
Rate      
U.S. federal tax at statutory tax rate 21.00% 21.00% 21.00%
State and local income taxes, net of federal income tax effect 5.94% 8.93% (0.22%)
Low-income housing tax credit, net of amortization (0.0023) (0.0096) 0.0032
ESOP fair market value adjustment 0.0035 (0.0203) 0.0083
162(m) 0.0006 (0.0317) 0.0119
Income from bank-owned life insurance (0.0253) 0.0795 (0.0405)
Other, net (0.73%) (4.96%) 2.57%
Total income tax expense (benefit) 23.86% 26.76% 21.64%
v3.25.4
Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Deferred tax assets:    
Allowance for credit losses $ 18,650 $ 16,684
Post-retirement benefits 7,527 6,294
Deferred compensation 1,465 1,755
Retirement Income Maintenance plan 3,479 3,369
ESOP 1,315 1,240
Stock-based compensation 1,719 3,098
Net unrealized losses on debt securities and defined benefit plans 29,117 42,715
Federal and State NOLs 12,748 24,129
Alternative minimum assessment carryforwards 2,156 2,156
Lease liability 4,585 4,960
Other items 5,809 5,066
Gross deferred tax assets 88,570 111,466
Valuation allowance 0 0
Total deferred tax assets, net 88,570 111,466
Deferred tax liabilities:    
Pension expense 80,321 75,489
Depreciation 1,931 2,448
Deferred loan costs 14,262 13,490
Intangible assets 1,586 1,590
Lease right-of-use asset 4,354 4,700
Other items 1,434 1,318
Total gross deferred tax liabilities 103,888 99,035
Net deferred tax liability $ (15,318)  
Net deferred tax asset   $ 12,431
v3.25.4
Income Taxes - Schedule of Cash Flow, Supplemental Disclosures (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Tax Contingency [Line Items]      
Federal taxes $ 0 $ (44) $ 8,400
Total 2 940 9,253
New Jersey      
Income Tax Contingency [Line Items]      
State taxes (115) 821 436
New York      
Income Tax Contingency [Line Items]      
State taxes 103 119 117
New York City      
Income Tax Contingency [Line Items]      
State taxes 12 43 300
Other      
Income Tax Contingency [Line Items]      
State taxes $ 2 $ 1 $ 0
v3.25.4
Financial Transactions with Off-Balance-Sheet Risk and Concentrations of Credit Risk - Schedule of Loan Commitments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Concentration Risk [Line Items]    
Total loan commitments $ 264,249 $ 125,045
Residential real estate    
Concentration Risk [Line Items]    
Total loan commitments 18,069 9,790
Multifamily real estate    
Concentration Risk [Line Items]    
Total loan commitments 31,554 17,712
Commercial real estate    
Concentration Risk [Line Items]    
Total loan commitments 68,188 30,681
Construction    
Concentration Risk [Line Items]    
Total loan commitments 101,138 26,973
Commercial business    
Concentration Risk [Line Items]    
Total loan commitments 41,059 33,027
Consumer including home equity loans and advances    
Concentration Risk [Line Items]    
Total loan commitments $ 4,241 $ 6,862
v3.25.4
Financial Transactions with Off-Balance-Sheet Risk and Concentrations of Credit Risk - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Loss Contingencies [Line Items]      
Derivative assets (liabilities), at fair value, net $ (3,000,000.0) $ (1,100,000)  
Off-balance sheet, credit loss, liability 3,946,000 3,821,000 $ 5,484,000
Provision for (reversal of) credit losses 125,000 (1,663,000)  
Disposal Group, Held-for-sale, Not Discontinued Operations      
Loss Contingencies [Line Items]      
Fair value disclosure, off-balance sheet risk, amount, liability 0 0  
Unused lines of Credit      
Loss Contingencies [Line Items]      
Fair value disclosure, off-balance sheet risk, amount, liability 1,100,000,000 1,200,000,000  
Mortgages      
Loss Contingencies [Line Items]      
Fair value disclosure, off-balance sheet risk, amount, liability 0 0  
Letter of Credit      
Loss Contingencies [Line Items]      
Fair value disclosure, off-balance sheet risk, amount, liability 22,900,000 28,300,000  
Letter of Credit | Columbia Bank's New Jersey Public Fund      
Loss Contingencies [Line Items]      
Fair value disclosure, off-balance sheet risk, amount, liability $ 175,000,000.0 $ 350,600,000  
v3.25.4
Financial Transactions with Off-Balance-Sheet Risk and Concentrations of Credit Risk - Schedule of Fair Value, Off-Balance-Sheet Risks (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]    
Beginning balance $ 3,821 $ 5,484
Provision for (reversal of) credit losses 125 (1,663)
Balance at end of period $ 3,946 $ 3,821
v3.25.4
Fair Value Measurements - Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value $ 1,122,017 $ 1,025,946
Equity securities 6,802 6,673
U.S. government and agency obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 398,470 314,702
Mortgage-backed securities and collateralized mortgage obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 654,973 622,957
Municipal obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 1,961 2,359
Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 66,613 85,928
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 398,470 314,702
Equity securities 6,471 6,350
Derivative assets 0 0
Derivative liabilities 0 0
Significant Other Observable Inputs (Level 2)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 711,909 700,743
Equity securities 331 323
Derivative assets 10,525 18,895
Derivative liabilities 13,503 20,025
Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 11,638 10,501
Equity securities 0
Derivative assets 0 0
Derivative liabilities 0 0
Measured on recurring basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 1,122,017 1,025,946
Equity securities 6,802 6,673
Derivative assets 10,525 18,895
Assets 1,139,344 1,051,514
Derivative liabilities 13,503 20,025
Measured on recurring basis | U.S. government and agency obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 398,470 314,702
Measured on recurring basis | Mortgage-backed securities and collateralized mortgage obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 654,973 622,957
Measured on recurring basis | Municipal obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 1,961 2,359
Measured on recurring basis | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 66,613 85,928
Measured on recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 398,470 314,702
Equity securities 6,471 6,350
Derivative assets 0 0
Assets 404,941 321,052
Derivative liabilities 0 0
Measured on recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. government and agency obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 398,470 314,702
Measured on recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Mortgage-backed securities and collateralized mortgage obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 0 0
Measured on recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Municipal obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 0 0
Measured on recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 0 0
Measured on recurring basis | Significant Other Observable Inputs (Level 2)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 711,909 700,743
Equity securities 331 323
Derivative assets 10,525 18,895
Assets 722,765 719,961
Derivative liabilities 13,503 20,025
Measured on recurring basis | Significant Other Observable Inputs (Level 2) | U.S. government and agency obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 0 0
Measured on recurring basis | Significant Other Observable Inputs (Level 2) | Mortgage-backed securities and collateralized mortgage obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 654,973 622,957
Measured on recurring basis | Significant Other Observable Inputs (Level 2) | Municipal obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 425 426
Measured on recurring basis | Significant Other Observable Inputs (Level 2) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 56,511 77,360
Measured on recurring basis | Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 11,638 10,501
Equity securities 0 0
Derivative assets 0 0
Assets 11,638 10,501
Derivative liabilities 0 0
Measured on recurring basis | Significant Unobservable Inputs (Level 3) | U.S. government and agency obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 0 0
Measured on recurring basis | Significant Unobservable Inputs (Level 3) | Mortgage-backed securities and collateralized mortgage obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 0 0
Measured on recurring basis | Significant Unobservable Inputs (Level 3) | Municipal obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value 1,536 1,933
Measured on recurring basis | Significant Unobservable Inputs (Level 3) | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities available for sale, at fair value $ 10,102 $ 8,568
v3.25.4
Fair Value Measurements - Assets Measured on Recurring Basis, Unobservable Input Reconciliation (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Debt securities available for sale:    
Fair Value Recurring Basis Unobservable Input Reconciliation Asset Gain Loss Statement Of Income Extensible List Not Disclosed Flag Debt securities available for sale:  
Significant Unobservable Inputs (Level 3) | Measured on recurring basis    
Debt securities available for sale:    
Beginning balance $ 10,501 $ 9,737
Purchase of Level 3 asset 1,549 1,010
Maturity of Level 3 asset (1,944) (927)
Change in fair value of Level 3 assets 1,532 681
Ending balance $ 11,638 $ 10,501
v3.25.4
Fair Value Measurements - Narrative (Details)
12 Months Ended
Dec. 31, 2025
security
Dec. 31, 2024
security
Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Adjustments for estimated costs to sell collateral dependent impaired loans 6.00%  
Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Adjustments for estimated costs to sell collateral dependent impaired loans 8.00%  
Measured on recurring basis | Corporate debt securities    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, measurement with unobservable inputs reconciliation, recurring basis, number of assets included in level 3 2 2
Measured on recurring basis | Municipal obligations    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, measurement with unobservable inputs reconciliation, recurring basis, number of assets included in level 3 1 2
Significant Unobservable Inputs (Level 3) | Measured on recurring basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Fair value, measurement with unobservable inputs reconciliation, recurring basis, number of assets purchased included in level 3 1 1
Fair value, measurement with unobservable inputs reconciliation, recurring basis, number of assets transfers included in level 3 0 0
Significant Unobservable Inputs (Level 3) | Measured on recurring basis | Corporate debt securities | Measurement Input, Market Yield | Discounted cash flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.0925  
Significant Unobservable Inputs (Level 3) | Measured on recurring basis | Municipal obligations | Measurement Input, Market Yield | Discounted cash flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Debt securities, available-for-sale, measurement input 0.0460  
v3.25.4
Fair Value Measurements - Assets and Liabilities Measured on Non-Recurring Basis (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Other real estate owned $ 0 $ 1,334
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Impaired loans 0 0
Significant Other Observable Inputs (Level 2)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Impaired loans 0 0
Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Impaired loans 8,015,243 7,393,058
Measured on non-recurring basis    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Impaired loans 14,799 3,199
Other real estate owned   1,334
Mortgage servicing rights 2,384 2,443
Assets 17,183 6,976
Measured on non-recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Impaired loans 0 0
Other real estate owned   0
Mortgage servicing rights 0 0
Assets 0 0
Measured on non-recurring basis | Significant Other Observable Inputs (Level 2)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Impaired loans 0 0
Other real estate owned   0
Mortgage servicing rights 0 0
Assets 0 0
Measured on non-recurring basis | Significant Unobservable Inputs (Level 3)    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Impaired loans 14,799 3,199
Other real estate owned   1,334
Mortgage servicing rights 2,384 2,443
Assets $ 17,183 $ 6,976
v3.25.4
Fair Value Measurements - Qualitative Valuation (Details)
$ in Thousands
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
Fair Value    
Other real estate owned $ 0 $ 1,334
Measured on non-recurring basis    
Fair Value    
Impaired loans 14,799 3,199
Other real estate owned   1,334
Mortgage servicing rights 2,384 2,443
Significant Unobservable Inputs (Level 3)    
Fair Value    
Impaired loans 8,015,243 7,393,058
Significant Unobservable Inputs (Level 3) | Measured on non-recurring basis    
Fair Value    
Impaired loans 14,799 3,199
Other real estate owned   1,334
Mortgage servicing rights $ 2,384 $ 2,443
Significant Unobservable Inputs (Level 3) | A/R aging schedule | Measured on non-recurring basis | Other    
Unobservable Inputs    
Impaired loans   0
Significant Unobservable Inputs (Level 3) | A/R aging schedule | Measured on non-recurring basis | Weighted Average | Other    
Unobservable Inputs    
Impaired loans   0
Significant Unobservable Inputs (Level 3) | Discount for costs to sell | Measured on non-recurring basis | Appraisal / Other    
Unobservable Inputs    
Impaired loans 0.060  
Significant Unobservable Inputs (Level 3) | Discount for costs to sell | Measured on non-recurring basis | Contract sales price    
Unobservable Inputs    
Other real estate owned   0.080
Significant Unobservable Inputs (Level 3) | Discount for costs to sell | Measured on non-recurring basis | Weighted Average | Appraisal / Other    
Unobservable Inputs    
Impaired loans 0.060  
Significant Unobservable Inputs (Level 3) | Prepayments speeds and discount rates | Measured on non-recurring basis | Minimum | Discounted cash flow    
Unobservable Inputs    
Mortgage servicing rights 0.053 0.045
Significant Unobservable Inputs (Level 3) | Prepayments speeds and discount rates | Measured on non-recurring basis | Maximum | Discounted cash flow    
Unobservable Inputs    
Mortgage servicing rights 0.285 0.343
Significant Unobservable Inputs (Level 3) | Prepayments speeds and discount rates | Measured on non-recurring basis | Weighted Average | Discounted cash flow    
Unobservable Inputs    
Mortgage servicing rights 0.130 0.117
Significant Unobservable Inputs (Level 3) | Discount rate | Measured on non-recurring basis | Weighted Average | Discounted cash flow    
Unobservable Inputs    
Mortgage servicing rights 0.1375 0.1450
v3.25.4
Fair Value Measurements - Fair Value on Balance Sheet (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Financial assets:    
Debt securities available for sale, at fair value $ 1,122,017 $ 1,025,946
Debt securities held to maturity 367,289 350,153
Equity securities $ 6,802 6,673
Financial liabilities:    
Derivative Asset, Statement of Financial Position, Extensible Enumeration, Not Disclosed Flag Derivative assets  
Derivative Liability, Statement of Financial Position, Extensible Enumeration, Not Disclosed Flag Derivative liabilities  
Quoted Prices in Active Markets for Identical Assets (Level 1)    
Financial assets:    
Cash and cash equivalents $ 340,806 289,223
Debt securities available for sale, at fair value 398,470 314,702
Debt securities held to maturity 0 0
Equity securities 6,471 6,350
Federal Home Loan Bank stock 0 0
Loans receivable, net 0 0
Derivative assets 0 0
Financial liabilities:    
Deposits 0 0
Borrowings 0 0
Derivative liabilities 0 0
Significant Other Observable Inputs (Level 2)    
Financial assets:    
Cash and cash equivalents 0 0
Debt securities available for sale, at fair value 711,909 700,743
Debt securities held to maturity 367,289 350,153
Equity securities 331 323
Federal Home Loan Bank stock 64,604 60,387
Loans receivable, net 0 0
Derivative assets 10,525 18,895
Financial liabilities:    
Deposits 8,444,260 8,088,842
Borrowings 1,192,416 1,077,466
Derivative liabilities 13,503 20,025
Significant Unobservable Inputs (Level 3)    
Financial assets:    
Cash and cash equivalents 0 0
Debt securities available for sale, at fair value 11,638 10,501
Debt securities held to maturity 0 0
Equity securities 0
Federal Home Loan Bank stock 0 0
Loans receivable, net 8,015,243 7,393,058
Derivative assets 0 0
Financial liabilities:    
Deposits 0 0
Borrowings 0 0
Derivative liabilities 0 0
Carrying Value    
Financial assets:    
Cash and cash equivalents 340,806 289,223
Debt securities available for sale, at fair value 1,122,017 1,025,946
Debt securities held to maturity 396,233 392,840
Equity securities 6,802 6,673
Federal Home Loan Bank stock 64,604 60,387
Loans receivable, net 8,224,809 7,856,970
Derivative assets 10,525 18,895
Financial liabilities:    
Deposits 8,444,079 8,096,149
Borrowings 1,183,472 1,080,600
Derivative liabilities 13,503 20,025
Total Fair Value    
Financial assets:    
Cash and cash equivalents 340,806 289,223
Debt securities available for sale, at fair value 1,122,017 1,025,946
Debt securities held to maturity 367,289 350,153
Equity securities 6,802 6,673
Federal Home Loan Bank stock 64,604 60,387
Loans receivable, net 8,015,243 7,393,058
Derivative assets 10,525 18,895
Financial liabilities:    
Deposits 8,444,260 8,088,842
Borrowings 1,192,416 1,077,466
Derivative liabilities $ 13,503 $ 20,025
v3.25.4
Earnings per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Earnings Per Share [Abstract]      
Net income (loss) $ 51,766 $ (11,653) $ 36,086
Shares:      
Weighted average shares outstanding - basic (in shares) 101,810,752 101,676,758 102,656,388
Weighted average dilutive shares outstanding (in shares) 0 162,749 238,581
Weighted average shares outstanding - diluted (in shares) 101,810,752 101,839,507 102,894,969
Earnings (loss) per share:      
Basic (in dollars per share) $ 0.51 $ (0.11) $ 0.35
Diluted (in dollars per share) $ 0.51 $ (0.11) $ 0.35
v3.25.4
Earnings per Share - Narrative (Details) - shares
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Earnings Per Share [Abstract]      
Antidilutive securities excluded from computation of earnings per share (in shares) 4,044,460 988,161 704,526
v3.25.4
Parent-only Financial Information - Statement of Financial Condition (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Assets        
Cash and due from banks $ 340,695 $ 289,113    
Short-term investments 111 110    
Total cash and cash equivalents 340,806 289,223    
Equity securities, at fair value 6,802 6,673    
Other assets 335,651 324,049    
Total assets 11,018,793 10,475,493    
Liabilities:        
Balance 1,183,472 1,080,600    
Accrued expenses and other liabilities 184,722 172,915    
Total liabilities 9,858,065 9,395,117    
Stockholders' equity 1,160,728 1,080,376 $ 1,040,335 $ 1,053,595
Total liabilities and stockholders' equity 11,018,793 10,475,493    
Parent Company        
Assets        
Cash and due from banks 31,494 6,459    
Short-term investments 111 110    
Total cash and cash equivalents 31,605 6,569    
Equity securities, at fair value 201 193    
Investment in subsidiaries 1,102,653 1,045,203    
Loans receivable, net 32,674 34,599    
Other assets 3,411 3,106    
Total assets 1,170,544 1,089,670    
Liabilities:        
Balance 7,057 7,036    
Accrued expenses and other liabilities 2,759 2,471    
Total liabilities 9,816 9,507    
Stockholders' equity 1,160,728 1,080,163    
Total liabilities and stockholders' equity $ 1,170,544 $ 1,089,670    
v3.25.4
Parent-only Financial Information - Statement of Income and Comprehensive Income (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Interest income:      
Loans receivable $ 403,173 $ 382,266 $ 343,770
Unrealized gain on debt securities available for sale 26,504 55,994 29,637
Interest expense on borrowings 51,943 71,061 63,940
Net interest income 221,634 177,982 205,876
Non-interest income:      
Change in fair value of equity securities 928 906 1,214
Other non-interest income 9,557 13,431 14,136
Total non-interest income 37,069 1,894 27,379
Non-interest expense:      
Merger-related expenses 214 1,665 606
Loss on extinguishment of debt 0 3,447 300
Total non-interest expense 180,892 181,335 182,417
Income (loss) before income tax expense (benefit) 67,989 (15,910) 46,051
Income tax (benefit) 16,223 (4,257) 9,965
Net income (loss) 51,766 (11,653) 36,086
Other comprehensive income 34,396 48,367 20,561
Total comprehensive income, net of tax 86,162 36,714 56,647
Parent Company      
Condensed Financial Statements, Captions [Line Items]      
Dividends from subsidiary 35,000 0 45,000
Interest income:      
Loans receivable 1,643 1,735 1,814
Unrealized gain on debt securities available for sale 16 20 18
Interest-earning deposits 2 1 8
Total interest income 36,661 1,756 46,840
Interest expense on borrowings 408 474 1,339
Net interest income 36,253 1,282 45,501
Equity earnings income (loss) in subsidiaries 16,605 (10,677) (8,432)
Non-interest income:      
Change in fair value of equity securities 8 2 (10)
Other non-interest income 1 0 0
Total non-interest income 9 2 (10)
Non-interest expense:      
Merger-related expenses 214 755 41
Loss on extinguishment of debt 0 0 300
Other non-interest expense 1,598 1,618 1,502
Total non-interest expense 1,812 2,373 1,843
Income (loss) before income tax expense (benefit) 51,055 (11,766) 35,216
Income tax (benefit) (711) (113) (870)
Net income (loss) 51,766 (11,653) 36,086
Other comprehensive income 34,396 48,367 20,561
Total comprehensive income, net of tax $ 86,162 $ 36,714 $ 56,647
v3.25.4
Parent-only Financial Information - Statement of Cash Flows (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Cash flows from operating activities:      
Net income (loss) $ 51,766 $ (11,653) $ 36,086
Adjustments to reconcile net income to net cash provided by operating activities:      
Amortization of intangible assets 2,171 2,191 2,350
Change in fair value of equity securities (873) (2,594) (695)
Loss on extinguishment of debt 0 3,447 300
Deferred tax expense 14,151 (5,986) 3,375
Increase in other assets (29,432) (12,440) (33,992)
Increase (decrease) in accrued expenses and other liabilities 7,980 (7,298) 3,282
Net cash provided by operating activities 68,397 33,321 40,716
Cash flows from investing activities:      
Net cash (used in) provided by investing activities (454,162) 39,468 39,645
Cash flows from financing activities:      
Repayment of term note 0 0 (30,300)
Purchase of treasury stock (13,351) (5,894) (80,497)
Exercise of stock options (1) (99) (24)
Net cash provided by (used in) financing activities 437,348 (206,815) 163,660
Net increase (decrease) in cash and cash equivalents 51,583 (134,026) 244,021
Cash and cash equivalents at beginning of year 289,223 423,249 179,228
Cash and cash equivalents at end of year 340,806 289,223 423,249
Non-cash investing and financing activities:      
Excise tax on net stock repurchases 137 42 800
Parent Company      
Cash flows from operating activities:      
Net income (loss) 51,766 (11,653) 36,086
Adjustments to reconcile net income to net cash provided by operating activities:      
Amortization of intangible assets 21 74 74
Change in fair value of equity securities (8) (2) 10
Loss on extinguishment of debt 0 0 300
Deferred tax expense (425) 2,856 2,019
Increase in other assets 202 (2,653) 8,894
Increase (decrease) in accrued expenses and other liabilities (180) (658) (890)
Equity in undistributed (earnings) loss of subsidiaries (16,605) 10,677 8,432
Net cash provided by operating activities 34,771 (1,359) 54,925
Cash flows from investing activities:      
Proceeds from sales of loans receivable 1,925 1,833 1,755
Net cash (used in) provided by investing activities 1,925 1,833 1,755
Cash flows from financing activities:      
Repayment of term note 0 0 (30,300)
Purchase of treasury stock (13,351) (5,894) (80,497)
Exercise of stock options 0 0 42
Issuance of common stock allocated to restricted stock award grants 3,355 4,153 4,066
Restricted stock forfeitures (1,224) (99) (501)
Repurchase of shares for taxes (441) (817) (623)
Net cash provided by (used in) financing activities (11,661) (2,657) (107,813)
Net increase (decrease) in cash and cash equivalents 25,035 (2,183) (51,133)
Cash and cash equivalents at beginning of year 6,569 8,752 59,885
Cash and cash equivalents at end of year 31,604 6,569 8,752
Non-cash investing and financing activities:      
Excise tax on net stock repurchases $ 137 $ 42 $ 800
v3.25.4
Other Comprehensive Income (Loss) - Tax Effects of Components in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Before Tax      
Other comprehensive income (loss) $ 48,589 $ 67,014 $ 28,554
Tax Effect      
Other comprehensive income (loss) (14,193) (18,647) (7,993)
After Tax      
Total other comprehensive income 34,396 48,367 20,561
Unrealized (Losses) on Debt Securities Available for Sale      
Before Tax      
Other comprehensive income (loss), before reclassifications 37,429 77,585 41,181
Other comprehensive income (loss) 37,724 41,738 30,320
Tax Effect      
Other comprehensive income (loss), before reclassifications (10,925) (21,591) (11,544)
Other comprehensive income (loss) (11,009) (11,612) (8,487)
After Tax      
Other comprehensive income (loss), before reclassifications 26,504 55,994 29,637
Total other comprehensive income 26,715 30,126 21,833
Accretion of unrealized gain on debt securities reclassified as held to maturity      
Before Tax      
Reclassification from AOCI, current period 5 4 (14)
Tax Effect      
Reclassification from AOCI, current period (3) (1) 4
After Tax      
Reclassification from AOCI, current period 2 3 (10)
Reclassification adjustment for gain (loss) included in net income      
Before Tax      
Reclassification from AOCI, current period 290 (35,851) (10,847)
Tax Effect      
Reclassification from AOCI, current period (81) 9,980 3,053
After Tax      
Reclassification from AOCI, current period 209 (25,871) (7,794)
Unrealized (loss) gain on swap contracts accounted for as cash flow hedges      
Before Tax      
Other comprehensive income (loss), before reclassifications (4,537) 2,467 (1,274)
Tax Effect      
Other comprehensive income (loss), before reclassifications 1,264 (688) 356
After Tax      
Other comprehensive income (loss), before reclassifications (3,273) 1,779 (918)
Total other comprehensive income (3,273) 1,779 (918)
Amortization of prior service cost included in net income      
Before Tax      
Reclassification from AOCI, current period (141) (98) (56)
Tax Effect      
Reclassification from AOCI, current period 39 27 16
After Tax      
Reclassification from AOCI, current period (102) (71) (40)
Reclassification adjustment of actuarial net gain (loss) included in net income      
Before Tax      
Reclassification from AOCI, current period 92 (1,341) (776)
Tax Effect      
Reclassification from AOCI, current period (26) 378 218
After Tax      
Reclassification from AOCI, current period 66 (963) (558)
Change in funded status of retirement obligations      
Before Tax      
Other comprehensive income (loss), before reclassifications 15,451 24,248 340
Other comprehensive income (loss) 15,402 22,809 (492)
Tax Effect      
Other comprehensive income (loss), before reclassifications (4,461) (6,752) (96)
Other comprehensive income (loss) (4,448) (6,347) 138
After Tax      
Other comprehensive income (loss), before reclassifications 10,990 17,496 244
Total other comprehensive income $ 10,954 $ 16,462 $ (354)
v3.25.4
Other Comprehensive Income (Loss) - Changes in Components of Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period $ 1,080,376 $ 1,040,335 $ 1,053,595
Current period changes in other comprehensive income (loss) 34,396 48,367 20,561
Balance at end of year 1,160,728 1,080,376 1,040,335
Accumulated Other Comprehensive (Loss)      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period (110,368) (158,735) (179,296)
Current period changes in other comprehensive income (loss) 34,396 48,367 20,561
Balance at end of year (75,972) (110,368) (158,735)
Unrealized (Losses) on Debt Securities Available for Sale      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period (83,523) (113,649) (135,482)
Current period changes in other comprehensive income (loss) 26,715 30,126 21,833
Balance at end of year (56,808) (83,523) (113,649)
Unrealized Gains (Losses) on Swaps      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period 1,365 (414) 504
Current period changes in other comprehensive income (loss) (3,273) 1,779 (918)
Balance at end of year (1,908) 1,365 (414)
Employee Benefit Plans      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Balance at beginning of period (28,210) (44,672) (44,318)
Current period changes in other comprehensive income (loss) 10,954 16,462 (354)
Balance at end of year $ (17,256) $ (28,210) $ (44,672)
v3.25.4
Other Comprehensive Income (Loss) - Reclassification Out of AOCI (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Total before tax $ 67,989 $ (15,910) $ 46,051
Income tax (expense) benefit (16,223) 4,257 (9,965)
Net income (loss) 51,766 (11,653) 36,086
Reclassification out of Accumulated Other Comprehensive Income      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Total before tax 382 (37,192) (11,623)
Income tax (expense) benefit (107) 10,358 3,271
Net income (loss) 275 (26,834) (8,352)
Reclassification out of Accumulated Other Comprehensive Income | Reclassification adjustment for gain (loss) included in net income      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Gain (loss) on securities transactions 290 (35,851) (10,847)
Reclassification out of Accumulated Other Comprehensive Income | Reclassification adjustment of actuarial net gain (loss) included in net income      
Accumulated Other Comprehensive Income (Loss) [Line Items]      
Other non-interest expense $ 92 $ (1,341) $ (776)
v3.25.4
Derivatives and Hedging Activities - Narrative (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2025
USD ($)
swap
Dec. 31, 2024
USD ($)
swap
Dec. 31, 2023
USD ($)
Derivative [Line Items]      
Derivative Excluded Component Gain (Loss) Statement of Income or Comprehensive Income, Extensible Enumeration, Not Disclosed Flag   hedge hedge
Derivative, excluded component, gain (loss), recognized in earnings   $ 31 $ 47
Accrued interest on derivative, at fair value $ 13 639  
Net liability position 3,000    
Collateral against obligations 2,100    
Interest Rate Swap      
Derivative [Line Items]      
Derivative gains (losses) recorded in the statements of income (139) 89 $ (302)
Interest Rate Swap | FHLB advances      
Derivative [Line Items]      
Notional amount of derivative $ 393,700 378,700  
Interest Rate Swap | Fair Value Hedging      
Derivative [Line Items]      
Notional amount of derivative   $ 850,000  
Number of interest rate derivatives held | swap 0 10  
Interest Rate Swap | Not Designated as Hedging Instrument      
Derivative [Line Items]      
Number of commercial banking customers | swap 92 84  
Notional amount of derivative $ 387,200 $ 298,800  
Interest Rate Swap | Designated as Hedging Instrument | Cash Flow Hedging | FHLB advances      
Derivative [Line Items]      
Notional amount of derivative $ 393,700 $ 378,700  
Number of interest rate derivatives held | swap 33 31  
v3.25.4
Derivatives and Hedging Activities - Derivative Financial Instruments (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Derivative Financial Instruments, Assets    
Derivatives, Fair Value [Line Items]    
Carrying Amount of Hedged Assets/(Liabilities)   $ 853,422
Cumulative Amount of Fair Value Hedging Adjustment included in the Carrying Amount of Hedged Assets/(Liabilities)   3,422
Interest Rate Swap | Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative assets $ 276 3,619
Derivative liabilities $ 3,213 $ 4,847
Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other assets Other assets
Derivative Liability, Statement of Financial Position [Extensible Enumeration] Accrued expenses and other liabilities Accrued expenses and other liabilities
Interest Rate Swap | Not Designated as Hedging Instrument    
Derivatives, Fair Value [Line Items]    
Derivative assets $ 10,249 $ 15,276
Derivative liabilities 10,290 15,178
Carrying Value    
Derivatives, Fair Value [Line Items]    
Derivative assets 10,525 18,895
Derivative liabilities $ 13,503 $ 20,025
v3.25.4
Revenue Recognition (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disaggregation of Revenue [Line Items]      
Total out-of-scope non-interest income $ 18,992 $ (13,349) $ 11,655
Total non-interest income 37,069 1,894 27,379
Total in-scope non-interest income      
Disaggregation of Revenue [Line Items]      
Revenue 18,077 15,243 15,724
Demand deposit account fees      
Disaggregation of Revenue [Line Items]      
Revenue 8,054 6,507 5,145
Title insurance fees      
Disaggregation of Revenue [Line Items]      
Revenue 3,034 2,505 2,400
Insurance agency income      
Disaggregation of Revenue [Line Items]      
Revenue 580 269 188
Other non-interest income      
Disaggregation of Revenue [Line Items]      
Revenue $ 6,409 $ 5,962 $ 7,991
v3.25.4
Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Billions
Dec. 31, 2026
Dec. 31, 2025
Dec. 31, 2024
Subsequent Event [Line Items]      
Common stock, par value (in dollars per share)   $ 0.01 $ 0.01
Forecast      
Subsequent Event [Line Items]      
Common stock, par value (in dollars per share) $ 0.01    
Tranche One | Forecast      
Subsequent Event [Line Items]      
Business combination, independent valuation amount $ 2.3    
Tranche Two | Greater Than Independent Valuation | Forecast      
Subsequent Event [Line Items]      
Business combination, independent valuation amount 2.3    
Tranche Two | Less Than Independent Valuation | Forecast      
Subsequent Event [Line Items]      
Business combination, independent valuation amount 2.6    
Tranche Three | Greater Than Independent Valuation | Forecast      
Subsequent Event [Line Items]      
Business combination, independent valuation amount $ 2.6    
Northfield | Tranche One | Forecast      
Subsequent Event [Line Items]      
Business combination, consideration transferred, equity interests issued and issuable, entity shares issued per acquiree share (in shares) 1.425    
Business combination, consideration transferred, equity interests issued and issuable, cash paid per acquiree share $ 14.25    
Northfield | Tranche Two | Forecast      
Subsequent Event [Line Items]      
Business combination, consideration transferred, equity interests issued and issuable, entity shares issued per acquiree share (in shares) 1.450    
Business combination, consideration transferred, equity interests issued and issuable, cash paid per acquiree share $ 14.50    
Northfield | Tranche Three | Forecast      
Subsequent Event [Line Items]      
Business combination, consideration transferred, equity interests issued and issuable, entity shares issued per acquiree share (in shares) 1.465    
Business combination, consideration transferred, equity interests issued and issuable, cash paid per acquiree share $ 14.65    
MHC | Northfield | Forecast      
Subsequent Event [Line Items]      
Business combination, voting equity interest acquired, percentage 73.10%    
Holding Company Common Stock | Forecast      
Subsequent Event [Line Items]      
Common stock, par value (in dollars per share) $ 0.01    
Company Common Stock | Forecast      
Subsequent Event [Line Items]      
Common stock, par value (in dollars per share) $ 0.01    
Northfield Common Stock | Northfield | Forecast      
Subsequent Event [Line Items]      
Business combination, voting equity interest acquired, percentage 30.00%