Due within one year Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Grant Date Fair Value [Domain] Grant Date Fair Value [Domain] Grant Date Fair Value [Domain] Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Total undiscounted operating lease payments Lessee, Operating Lease, Liability, to be Paid Deferred tax asset Deferred Income Tax Assets, Net Due after ten years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Entity Address, Postal Zip Code Entity Address, Postal Zip Code Schedule of Impaired Financing Receivable [Table] Schedule of Impaired Financing Receivable [Table] Held to maturity, 12 months or longer, fair value Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value Proceeds from sale of other real estate owned Proceeds from Sale of Other Real Estate 2023 Time Deposit Maturities, Year One Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Four Finite-Lived Intangible Asset, Expected Amortization, after Year Four Gross Unrealized Gains Debt Securities, Held-to-Maturity, Accumulated Unrecognized Gain Gain (loss) on sale of securities Net loss (gain) on sale of securities available for sale Gain (loss) on sale of securities Debt Securities, Realized Gain (Loss) Debt Instrument [Axis] Debt Instrument [Axis] Held to maturity, total fair value Debt Securities, Held-to-Maturity, Unrealized Loss Position, Fair Value Borrowed Funds Debt Instrument, Fair Value Disclosure Money market deposit accounts Weighted Average Rate Domestic Deposit, Money Market Additional paid-in capital Additional Paid in Capital Due after five years through ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Fair Value Measurement [Domain] Fair Value Measurement [Domain] Financial Asset, Aging [Domain] Financial Asset, Aging [Domain] Financial Instruments [Domain] Financial Instruments [Domain] 2024 Time Deposit Maturities, Year Two Variable rate Debt Instrument, Basis Spread on Variable Rate 2026 Time Deposit Maturities, Year Four GSE residential certificates Mortgage-backed Securities, Issued by US Government Sponsored Entities, Residential Certificates [Member] Mortgage-backed Securities, Issued by US Government Sponsored Entities, Residential Certificates Statistical Measurement [Domain] Statistical Measurement [Domain] Net (gain) on redemption of bank-owned life insurance Gain (Loss) On Redemption Of Bank Owned Life Insurance Gain (Loss) On Redemption Of Bank Owned Life Insurance Exercised (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period Class of Financing Receivable [Domain] Class of Financing Receivable [Domain] Interest rate Debt Instrument, Interest Rate, Stated Percentage Deposits Interest Expense, Deposits Share-Based Payment Arrangement [Abstract] Accretion of operating lease liabilities Operating Lease, Liability, Accretion Expense Operating Lease, Liability, Accretion Expense Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Net income Net income Total reclassifications, net of income tax Net income attributable to Amalgamated Financial Corp. Net Income (Loss) Attributable to Parent Non- Accrual Financing Receivable, Nonaccrual Number of antidilutive shares (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Due after one year through five years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Lessee, Operating Lease, Liability, Payment, Due [Abstract] Lessee, Operating Lease, Liability, to be Paid [Abstract] Equity Component [Domain] Equity Component [Domain] Fair Value, Nonrecurring Fair Value, Nonrecurring [Member] Redemption price percentage Debt Instrument, Redemption Price, Percentage Total value of assets measured on non-recurring basis Assets, Fair Value Disclosure Accruing Loans and Leases Receivable, Nonperforming, Accrual of Interest LEASES Lessee, Operating Leases [Text Block] Fair Value of Financial Instruments Fair Value Measurement, Policy [Policy Text Block] Restricted stock unit vesting, net of repurchases Stock Issued During Period, Value, Restricted Stock Award, Net of Repurchases Stock Issued During Period, Value, Restricted Stock Award, Net of Repurchases Standby letters of credit Standby Letters of Credit [Member] Other Non-Interest Income - other Noninterest Income, Other Operating Income Supplemental disclosures of cash flow information: Supplemental Cash Flow Information [Abstract] Tax credits and other tax benefits recognized Investment Tax Credit Residential real estate lending Residential Real Estate [Member] Unrecognized compensation cost Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount 2022 remaining Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year Statement of Cash Flows [Abstract] Entity Address, State or Province Entity Address, State or Province Level 1 Fair Value, Inputs, Level 1 [Member] Pledged Status [Axis] Pledged Status [Axis] Employee Stock Employee Stock [Member] Other comprehensive income (loss), net of taxes: Other Comprehensive Income (Loss), Net of Tax [Abstract] Options outstanding Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Award Type [Axis] Award Type [Axis] Accrued interest and dividends receivable Nontrade Receivables Net cash provided by operating activities Net Cash Provided by (Used in) Operating Activities Change in total obligation for postretirement benefits and for prior service credit and for other benefits Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, before Tax Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Schedule of Restricted Stock Unit Activity Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block] Schedule of Amortized Cost and Fair Value of Available for Sale Securities Debt Securities, Available-for-Sale [Table Text Block] Other liabilities Other Liabilities Total Past Due Financial Asset, Past Due [Member] Grant Date Fair Value, One Grant Date Fair Value, One [Member] Grant Date Fair Value, One Purchase of securities held to maturity Payments to Acquire Held-to-Maturity Securities Receivables [Abstract] Allowance for loan losses Allowance for loan losses Total allowance for loan losses Beginning balance Ending balance Financing Receivable, Allowance for Credit Loss, Excluding Accrued Interest Total non-interest income Noninterest Income Commitments to extend credit Commitments to Extend Credit [Member] Unconsolidated Variable Interest Entities Variable Interest Entity, Not Primary Beneficiary [Member] Deposits from Workers United and other related entities Related Party Deposit Liabilities Total liabilities Liabilities Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Grant Date Fair Value, Three Grant Date Fair Value, Three [Member] Grant Date Fair Value, Three CASH FLOWS FROM INVESTING ACTIVITIES Net Cash Provided by (Used in) Investing Activities [Abstract] Loans without a related allowance - unpaid principal balance Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance Common stock issued Stock Issued During Period, Value, New Issues Debt Securities, Held-to-maturity, Continuous Unrealized Loss Position [Abstract] Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position [Abstract] Loans held for sale Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance Schedule of Reclassifications out of Accumulated Other Comprehensive Income (Loss) Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Decrease (increase) in equity method investments Proceeds From (Payments To) Equity Method Investments Proceeds From (Payments To) Equity Method Investments Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Fair Value Hierarchy and NAV [Domain] Fair Value Hierarchy and NAV [Domain] Trust Department fees Investment Banking, Advisory, Brokerage, and Underwriting Fees and Commissions Maximum exposure to credit loss Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount Deposits Total deposits Deposits Bank-owned life insurance Bank Owned Life Insurance Realized and recognized gains (losses) on sale of AFS and OTTI securities AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] Document Type Document Type Weighted Average Exercise Price Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] Secured Overnight Financing Rate Secured Overnight Financing Rate [Member] Secured Overnight Financing Rate Financial Asset, Aging [Axis] Financial Asset, Aging [Axis] Financing Receivable, Past Due [Table] Financing Receivable, Past Due [Table] Net realized gains (losses) Debt Securities, Available-for-Sale, Realized Gain (Loss) Shares Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Gross Unrealized Losses Debt Securities, Held-to-Maturity, Accumulated Unrecognized Loss Forfeited/expired (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures and Expirations in Period Financial assets: Assets, Fair Value Disclosure [Abstract] Net increase (decrease) in deposits Increase (Decrease) in Deposits Unvested at the beginning of the period (in dollars per share) Unvested at the end of the period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Held to maturity, less than 12 months, unrealized loss Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss Allowance for loan losses - individually evaluated for impairment Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment Entity Shell Company Entity Shell Company Deferred income tax expense (benefit) Deferred Income Tax Expense (Benefit) 2023 Lessee, Operating Lease, Liability, to be Paid, Year One Financial Instrument [Axis] Financial Instrument [Axis] Due within one year Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, Year One Due after one year through five years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five Excluding GSE, US Treasury, TRUPS Excluding Government Sponsored Entities, US Treasury and Trust Preferred Securities [Member] Excluding Government Sponsored Entities, US Treasury and Trust Preferred Securities Weighted average discount rate used for operating leases liability Operating Lease, Weighted Average Discount Rate, Percent1 Operating Lease, Weighted Average Discount Rate, Percent1 Document Period End Date Document Period End Date Funded portion of loans and letters of credit commitments Tax Credit Investments, Funded Portion of Commitment Tax Credit Investments, Funded Portion of Commitment Equity method investments Non-Interest Income, Equity Method Investments Non-Interest Income, Equity Method Investments Loans and letters of credit commitments Tax Credit Investments, Commitment Tax Credit Investments, Commitment Debt Securities, Available-for-sale [Table] Debt Securities, Available-for-Sale [Table] Total assets Assets Schedule of Amortized Cost and Fair Value of Held to Maturity Securities Debt Securities, Held-to-Maturity [Table Text Block] Earnings Per Share [Abstract] Federal Home Loan Bank Advances Federal Home Loan Bank Advances [Member] Performance Shares Performance Shares [Member] Schedule of Held-to-maturity Securities [Line Items] Schedule of Held-to-Maturity Securities [Line Items] Resell agreements Securities Purchased under Agreements to Resell Originations of loans held for sale Payments for Origination and Purchases of Loans Held-for-sale Due after five years through ten years Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Exercised (in dollars per share) Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Accounting Policies [Abstract] Schedule of Method for Evaluating Impairment and Allowance for Credit Loss Activity Financing Receivable, Allowance for Credit Loss [Table Text Block] Stockholders’ equity Stockholders' Equity Attributable to Parent [Abstract] Charge-offs Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff Fair value of held to maturity securities, pledged as collateral Amortized Cost Debt Securities, Held-to-Maturity, Amortized Cost, before Allowance for Credit Loss Residential PACE Property Assessed Clean Energy Assessment Securities, Residential [Member] Property Assessed Clean Energy Assessment Securities, Residential EARNINGS PER SHARE Earnings Per Share [Text Block] Due after one year through five years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five Asset Pledged as Collateral without Right Asset Pledged as Collateral without Right [Member] Fair Value Debt Securities, Held-to-Maturity, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] Total comprehensive income (loss), net of taxes Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Award Type [Domain] Award Type [Domain] Non-GSE residential certificates Residential Mortgage-Backed Securities [Member] Grantee Status [Axis] Grantee Status [Axis] Unrecognized compensation cost, period for recognition Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Available for sale securities, temporarily impaired, unrealized loss Available for sale, total unrealized losses Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss Options vested and exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term Financing Receivable, Troubled Debt Restructuring [Line Items] Financing Receivable, Troubled Debt Restructuring [Line Items] Schedule of Basis and Estimated Fair Values of Financial Instruments Fair Value, by Balance Sheet Grouping [Table Text Block] Property Assessed Clean Energy Commitments Property Assessed Clean Energy Commitments [Member] Property Assessed Clean Energy Commitments Entity Registrant Name Entity Registrant Name Due after five years through ten years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 5 through 10 Total loans receivable, net Loans receivable, net Financing Receivable, Excluding Accrued Interest, after Allowance for Credit Loss Exercise price of stock options, maximum (in dollars per share) Share-Based Payment Arrangement, Option, Exercise Price Range, Upper Range Limit Entity Address, City or Town Entity Address, City or Town Pledging Purpose [Axis] Pledging Purpose [Axis] INTEREST AND DIVIDEND INCOME Interest and Dividend Income, Operating [Abstract] Financing Receivable, Troubled Debt Restructuring [Table] Financing Receivable, Troubled Debt Restructuring [Table] Commercial real estate Commercial Real Estate [Member] Money market deposit accounts Deposits, Money Market Deposits Leases [Abstract] Total stockholders' equity Beginning balance Ending balance Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest Employee Share-Based Payment Arrangement, Employee [Member] Consolidation Consolidation, Policy [Policy Text Block] Restricted stock units vesting, net of repurchases Proceeds From Restricted Stock Unit Vesting, Net Proceeds From Restricted Stock Unit Vesting, Net Proceeds from redemption of bank-owned life insurance Proceeds from Life Insurance Policy Minimum Minimum [Member] Noncontrolling interests Stockholders' Equity Attributable to Noncontrolling Interest Due within one year Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One Statement of Financial Position [Abstract] Emerging Growth Company Entity Emerging Growth Company Occupancy and depreciation Occupancy, Net Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Income tax effect Other Comprehensive Income (Loss) before Reclassifications, Tax Commitments and Contingencies Disclosure [Abstract] FAIR VALUE OF FINANCIAL INSTRUMENTS Fair Value Disclosures [Text Block] Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss [Abstract] Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss [Abstract] Postemployment Retirement Benefits Postemployment Retirement Benefits [Member] Trading Symbol Trading Symbol Entity File Number Entity File Number Net deferred loan origination costs (fees) Financing Receivable, Unamortized Loan Cost (Fee) and Purchase Premium (Discount) 2026 Finite-Lived Intangible Asset, Expected Amortization, Year Four Municipal Municipal Notes [Member] Amortized Cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date [Abstract] Title of Individual [Axis] Title of Individual [Axis] VARIABLE INTEREST ENTITIES Variable Interest Entity Disclosure [Text Block] Number of shares granted (in shares) Awarded (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Restricted Stock Units Restricted Stock Units (RSUs) [Member] Loans receivable, net of deferred loan origination costs (fees) Total loans receivable, net of deferred loan origination costs (fees) Financing Receivable, Excluding Accrued Interest, before Allowance for Credit Loss Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Provision for (recovery of) loan losses Financing Receivable, Excluding Accrued Interest, Credit Loss Expense (Reversal) Other Other Debt [Member] Other Debt BASIS OF PRESENTATION AND CONSOLIDATION Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] Advertising and promotion Marketing and Advertising Expense Amortized Cost Amortized Cost Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss Time deposits Total time deposits Time Deposits INVESTMENT SECURITIES Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] Available for sale, 12 months or longer, fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer NON-INTEREST EXPENSE Noninterest Expense [Abstract] Due within one year Debt Securities, Held-to-Maturity, Fair Value, Maturity, Allocated and Single Maturity Date, Year One Amortization of intangible assets Amortization of Intangible Assets Interest paid during the period Interest Paid, Excluding Capitalized Interest, Operating Activities Earnings per common share - basic (in dollars per share) Basic earnings per common share (in dollars per share) Earnings Per Share, Basic Purchase Commitment, Excluding Long-term Commitment [Line Items] Purchase Commitment, Excluding Long-Term Commitment [Line Items] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Three Required percentage of pledged assets to FHLBNY of outstanding advances Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Required Percentage Collateral Pledged Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Required Percentage Collateral Pledged Reclassification adjustment for losses (gains) realized in income Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax Schedule of Deposits Deposit Liabilities, Type [Table Text Block] Available for sale, at fair value (amortized cost of $2,087,187 and 2,103,049, respectively) Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss Purchase Commitment, Excluding Long-term Commitment [Axis] Purchase Commitment, Excluding Long-Term Commitment [Axis] Consumer and other Consumer Loan [Member] Special Mention Special Mention [Member] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Total Amalgamated Financial Corp. stockholders' equity Stockholders' Equity Attributable to Parent Director Director [Member] Forfeited/expired (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Financing Receivable Portfolio Segment [Domain] Financing Receivable Portfolio Segment [Domain] Due after five years through ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10 Total individually impaired loans - average recorded investment Impaired Financing Receivable, Average Recorded Investment 2022 Time Deposit Maturities, Remainder of Fiscal Year Financing Receivable, Past Due [Line Items] Financing Receivable, Past Due [Line Items] Entity Interactive Data Current Entity Interactive Data Current Non-GSE commercial certificates Commercial Mortgage-Backed Securities [Member] Accumulated amortization of intangible assets Finite-Lived Intangible Assets, Accumulated Amortization 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Three Proceeds from sales of securities available for sale Proceeds Proceeds from Sale of Debt Securities, Available-for-Sale Portion at Fair Value Measurement Portion at Fair Value Measurement [Member] Dividends paid Payments of Dividends Retained Earnings Retained Earnings [Member] Deposits Deposits, Fair Value Disclosure Dividends Dividends, Common Stock, Cash Grant Date Fair Value, Two Grant Date Fair Value, Two [Member] Grant Date Fair Value, Two Internal Credit Assessment [Domain] Internal Credit Assessment [Domain] Common Stock Common Stock [Member] Maximum withholding percentage for each employee of eligible compensation Share-Based Compensation Arrangement by Share-Based Payment Award, Maximum Employee Subscription Rate Allowance for loan losses - collectively evaluated for impairment Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment Schedule of Lease Cost and Other Information Lease, Cost [Table Text Block] Repurchase of shares Payments for Repurchase of Common Stock Number of shares available for issuance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant Compromised Securities Collateralized Securities, Other [Member] Tax credit investments included in equity investments Equity Investments, Tax Credit Investment Equity Investments, Tax Credit Investment Statement [Table] Statement [Table] Purchase Commitment, Excluding Long-term Commitment [Domain] Purchase Commitment, Excluding Long-Term Commitment [Domain] Vested (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value Financing Receivable, Credit Quality Indicator [Line Items] Financing Receivable, Credit Quality Indicator [Line Items] Trust preferred Trust Preferred Securities [Member] Trust Preferred Securities Document Quarterly Report Document Quarterly Report Related party loans outstanding Loans and Leases Receivable, Related Parties Other eligible assets pledged as collateral Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged Statistical Measurement [Axis] Statistical Measurement [Axis] Other comprehensive income (loss), before tax Other Comprehensive Income (Loss), before Tax Purchase Commitment, Excluding Long-term Commitment [Table] Purchase Commitment, Excluding Long-Term Commitment [Table] Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Statistical Disclosure for Banks [Abstract] Grantee Status [Domain] Grantee Status [Domain] Retained earnings Retained Earnings (Accumulated Deficit) Accrued interest payable Accounts Payable and Accrued Liabilities, Fair Value Disclosure Due after ten years Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10 Equity Components [Axis] Equity Components [Axis] Fair Value, Recurring Fair Value, Recurring [Member] Vested and exercisable (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price Available for sale, less than 12 months, fair value Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months Document Fiscal Year Focus Document Fiscal Year Focus CASH FLOWS FROM OPERATING ACTIVITIES Net Cash Provided by (Used in) Operating Activities [Abstract] Statement [Line Items] Statement [Line Items] Unvested shares (in shares) Unvested at the beginning of the period (in shares) Unvested at the end of the period (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number GSE commercial certificates & CMO Mortgage-backed Securities, Issued by US Government Sponsored Entities, Commercial Certificates And Collateralized Mortgage Obligations [Member] Mortgage-backed Securities, Issued by US Government Sponsored Entities, Commercial Certificates And Collateralized Mortgage Obligations Variable Rate [Domain] Variable Rate [Domain] Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] Gross Unrealized Losses Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax Right-of-use lease asset Operating Lease, Right-of-Use Asset Repurchase of shares Stock Repurchased During Period, Value Accumulated Other Comprehensive Income (Loss) AOCI Attributable to Parent [Member] ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) Comprehensive Income (Loss) Note [Text Block] Schedule of Loans by Credit Quality Indicator Financing Receivable Credit Quality Indicators [Table Text Block] Financing Receivable Portfolio Segment [Axis] Financing Receivable Portfolio Segment [Axis] Decrease (increase) in accrued interest and dividends receivable Increase (Decrease) in Interest and Dividends Receivable Reclassification adjustment for losses (gains) realized in income Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax GSE commercial certificates Mortgage-backed Securities, Issued by US Government Sponsored Entities, Commercial Certificates [Member] Mortgage-backed Securities, Issued by US Government Sponsored Entities, Commercial Certificates Document Transition Report Document Transition Report Local Phone Number Local Phone Number Grant Date Fair Value [Axis] Grant Date Fair Value [Axis] Grant Date Fair Value Schedule of Stock Option Activity Share-Based Payment Arrangement, Option, Activity [Table Text Block] Due after ten years Debt Securities, Held-to-Maturity, Amortized Cost, after Allowance for Credit Loss, Maturity, Allocated and Single Maturity Date, after Year 10 Financing Receivable, Allowance for Credit Loss [Line Items] Financing Receivable, Allowance for Credit Loss [Line Items] Resell agreements Federal Funds Sold and Securities Borrowed or Purchased under Agreements to Resell, Fair Value Disclosure Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Financial Instruments Owned and Pledged as Collateral [Table] Financial Instruments Owned and Pledged as Collateral [Table] Goodwill Goodwill Loans - collectively evaluated for impairment Financing Receivable, Collectively Evaluated for Impairment AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Including Noncontrolling Interest AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Including Noncontrolling Interest [Member] Adjustments to reconcile net income to net cash provided by operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] GOODWILL AND INTANGIBLE ASSETS Goodwill and Intangible Assets Disclosure [Text Block] Income tax expense (benefit) Income tax expense (benefit) Income Tax Expense (Benefit) Prior service credit on pension plans and other postretirement benefits Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] 2026 Lessee, Operating Lease, Liability, to be Paid, Year Four Income Statement [Abstract] Granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Additional Paid-in Capital Additional Paid-in Capital [Member] Document Fiscal Period Focus Document Fiscal Period Focus Held to maturity, 12 months or longer, unrealized loss Debt Securities, Held-to-Maturity, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss Unrealized losses from available for sale securities transferred held-to-maturity converted to discount OCI, Held-to-Maturity Securities, Transfer from Debt Securities, Available-for-Sale, Unrealized Gain (Loss), before Adjustment and Tax OCI, Held-to-Maturity Securities, Transfer from Debt Securities, Available-for-Sale, Unrealized Gain (Loss), before Adjustment and Tax Weighted average common shares outstanding, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Federal Home Loan Banks [Abstract] Net unrealized gains (losses) on securities OCI, Debt Securities, Available-for-Sale, Gain (Loss), after Adjustment, before Tax Total individually impaired loans - unpaid principal balance Impaired Financing Receivable, Unpaid Principal Balance Schedule of Additional Information for Individually Impaired Loans and Allowances Impaired Financing Receivables [Table Text Block] Borrowed funds Interest Expense, Borrowings Loans Interest and Fee Income, Loans and Leases Debt Securities, Available-for-sale [Line Items] Debt Securities, Available-for-Sale [Line Items] Dividends (in dollars per share) Common Stock, Dividends, Per Share, Cash Paid Common stock, par value $0.01 per share (70,000,000 shares authorized; 30,672,303 and 31,130,143 shares issued and outstanding, respectively) Common Stock, Value, Issued Carrying Value Reported Value Measurement [Member] Interest and dividend income - securities OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), before Tax Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Post-Modification Balance Financing Receivable, Troubled Debt Restructuring, Postmodification Loans transferred to held-for-sale Financing Receivable, Reclassification to Held-for-sale Exercise of stock options, net of repurchases Proceeds from Stock Options Exercised, Net of Repurchases Proceeds from Stock Options Exercised, Net of Repurchases Fair value of shares granted (in dollars per share) Awarded (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value CDARS deposits Time Deposits, Certificate Of Deposit Account Registry Service Time Deposits, Certificate Of Deposit Account Registry Service Commercial PACE Property Assessed Clean Energy Assessment Securities, Commercial [Member] Property Assessed Clean Energy Assessment Securities, Commercial Options exercisable Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Multifamily Multifamily [Member] Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Total individually impaired loans - recorded investment Impaired Financing Receivable, Recorded Investment Cash, cash equivalents, and restricted cash at beginning of year Cash, cash equivalents, and restricted cash at end period Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents COMMITMENTS, CONTINGENCIES AND OFF BALANCE SHEET RISK Commitments and Contingencies Disclosure [Text Block] Income attributable to common stock Net Income (Loss) Available to Common Stockholders, Basic Common stock, shares issued (in shares) Common Stock, Shares, Issued Pledged Status [Domain] Pledged Status [Domain] Service charges on deposit accounts Service Charges And Fee Income On Deposit Accounts Service Charges And Fee Income On Deposit Accounts Equity investments Equity Method Investments Schedule of Troubled Debt Restructurings Financing Receivable, Troubled Debt Restructuring [Table Text Block] Total Stockholders' Equity Parent [Member] Retirement Plan Type [Domain] Retirement Plan Type [Domain] Data processing Information Technology and Data Processing Reclassification out of accumulated other comprehensive income (loss) Reclassification out of Accumulated Other Comprehensive Income [Member] Loans held for sale Loans Held-for-sale, Fair Value Disclosure Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Loans without a related allowance - average recorded investment Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment Subordinated debt Aggregate principal amount Subordinated Debt Fair value of temporarily impaired securities Available for sale, total fair value Debt Securities, Available-for-Sale, Unrealized Loss Position Amendment Flag Amendment Flag 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activities: Noncash Investing and Financing Items [Abstract] Security Exchange Name Security Exchange Name Outstanding, balance at the beginning of the period (in dollars per share) Outstanding, balance at the end of the period (in dollars per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price Total loans receivable Total Loans Receivable Total Loans Receivable Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process Net increase (decrease) in FHLB advances Proceeds from (Repayments of) Debt BORROWED FUNDS Federal Home Loan Bank Advances, Disclosure [Text Block] Grant period Share-Based Compensation Arrangement By Share-based Payment Award, Restriction Period Share-Based Compensation Arrangement By Share-based Payment Award, Restriction Period GSE residential CMOs Mortgage-backed Securities, Issued by US Government Sponsored Entities, Residential Collateralized Mortgage Obligations [Member] Mortgage-backed Securities, Issued by US Government Sponsored Entities, Residential Collateralized Mortgage Obligations Financing Receivable, Impaired [Line Items] Financing Receivable, Impaired [Line Items] Purchase (sale) of securities available for sale, net not settled Noncash or Part Noncash Acquisition, Investments Acquired, Net Noncash or Part Noncash Acquisition, Investments Acquired, Net Thereafter Lessee, Operating Lease, Liability, to be Paid, after Year Four Lessee, Operating Lease, Liability, to be Paid, after Year Four Number of shares reserved for issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance ABS Asset-Backed Securities, Securitized Loans and Receivables [Member] Cover [Abstract] Level 3 Fair Value, Inputs, Level 3 [Member] Income before income taxes Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest EMPLOYEE BENEFIT PLANS Share-Based Payment Arrangement [Text Block] 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Date, Amortized Cost [Abstract] Less: present value adjustment Lessee, Operating Lease, Liability, Undiscounted Excess Amount Earnings per common share - diluted (in dollars per share) Diluted earnings per common share (in dollars per share) Earnings Per Share, Diluted Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Transfer to loans held for sale Transfer of Portfolio Loans and Leases to Held-for-sale Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Bank-owned life insurance Bank Owned Life Insurance Income 2024 Lessee, Operating Lease, Liability, to be Paid, Year Two Due after ten years Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10 Schedule of Loans Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Net interest income after provision for loan losses Interest Income (Expense), after Provision for Loan Loss Property Assessed Clean Energy Assessment Securities Property Assessed Clean Energy Assessment Securities [Member] Property Assessed Clean Energy Assessment Securities Entity Ex Transition Period Entity Ex Transition Period Debt Securities, Held-to-maturity, Fair Value to Amortized Cost [Abstract] Debt Securities, Held-to-Maturity, Fair Value to Amortized Cost, after Allowance for Credit Loss [Abstract] Corporate Corporate Debt Securities [Member] Other comprehensive income (loss), before reclassifications, before tax Other Comprehensive Income (Loss), before Reclassifications, before Tax Class of Financing Receivable [Axis] Class of Financing Receivable [Axis] Schedule of Remaining Commitments of Operating Lease Payments Lessee, Operating Lease, Liability, Maturity [Table Text Block] Exercise price of stock options, minimum (in dollars per share) Share-Based Payment Arrangement, Option, Exercise Price Range, Lower Range Limit Financial Instruments Owned 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Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Book value of securities transferred from available for sale to held-to-maturity Debt Securities, Available For Sale, After Allowance For Credit Loss, Fair Value, Transfer, Amount Debt Securities, Available For Sale, After Allowance For Credit Loss, Fair Value, Transfer, Amount Total Concentration Risk, Credit Risk, Financial Instrument, Maximum Exposure Deposits Weighted Average Rate Domestic Deposit, Total Deposits Weighted Average Rate Domestic Deposit, Total Deposits Loans transferred to other real estate owned Real Estate Owned, Transfer to Real Estate Owned Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Interest-bearing deposits in banks Interest-Bearing Deposits in Banks and Other Financial Institutions 2022 remaining Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Consolidated Entities [Domain] Consolidated Entities [Domain] Pass 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Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Number of Loans Financing Receivable, Modifications, Number of Contracts Schedule Other Comprehensive Income (Loss) Comprehensive Income (Loss) [Table Text Block] City Area Code City Area Code Commercial and industrial Commercial and Industrial Sector [Member] Assets Assets [Abstract] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Amount Deposits, by Type [Abstract] Other debt Other Debt Obligations [Member] Schedule of Unrealized Losses Schedule of Unrealized Loss on Investments [Table Text Block] Statement of Stockholders' Equity [Abstract] Financing Receivable, Credit Quality Indicator [Table] Financing Receivable, Credit Quality Indicator [Table] Non-interest bearing demand deposit accounts Noninterest-Bearing Deposit Liabilities Maturities, principal payments and redemptions of securities available for sale Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale Fair Value Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value [Abstract] INTEREST EXPENSE Interest Expense [Abstract] CASH FLOWS FROM FINANCING ACTIVITIES Net Cash Provided by (Used in) Financing Activities [Abstract] Mortgage-related Mortgage Loans Collateralized Mortgage-Backed Securities [Member] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Market-Based Restricted Stock Units Market-Based Restricted Stock Units [Member] Market-Based Restricted Stock Units Variable Rate [Axis] Variable Rate [Axis] Fixed-to-Floating Rate Notes Fixed-To-Floating Rate Notes [Member] Fixed-To-Floating Rate Notes Securities available-for-sale transferred to held-to-maturity Fair value of securities transferred from available for sale to held-to-maturity Debt Securities, Available For Sale, Amortized Cost After Allowance For Credit Loss, Transfer, Amount Debt Securities, Available For Sale, Amortized Cost After Allowance For Credit Loss, Transfer, Amount Net decrease (increase) in loans Payments For (Proceeds From) Originations And Purchase Of Loans, Net Of Principal Payments Payments For (Proceeds From) Originations And Purchase Of Loans, Net Of Principal Payments Net loss (income) from equity method investments Income (Loss) from Equity Method Investments Total non-interest expense Noninterest Expense Other Other Noninterest Expense Reserve for credit risk inherent in off balance sheet credit commitments Off-Balance-Sheet, Credit Loss, Liability Loans with a related allowance - average recorded investment Impaired Financing Receivable, with Related Allowance, Average Recorded Investment Increase (decrease) in accrued expenses and other liabilities Increase (Decrease) in Other Operating Liabilities Purchases of premises and equipment Payments to Acquire Property, Plant, and Equipment Decrease (increase) of FHLBNY stock, net Payments for (Proceeds from) Federal Reserve Bank Stock Remaining commitment Purchase Commitment, Remaining Minimum Amount Committed Weighted Average Rate Weighted Average Rate Domestic Deposit Liabilities [Abstract] 2023 Finite-Lived Intangible Asset, Expected Amortization, Year One Maximum value of shares eligible to be purchased by employees for each calendar year Share-based Compensation Arrangement By Share-based Payment Award, Maximum Purchase Value During Year, Per Employee Share-based Compensation Arrangement By Share-based Payment Award, Maximum Purchase Value During Year, Per Employee Schedule of Factors Used in Earnings Per Share Calculation Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] OTTI loss (gain) recognized in earnings Gain (Loss) On Other than Temporary Impairment, Investments 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