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Fair Value Measurements and Fair Value of Financial Instruments (Carrying Values and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt securities available for sale | $ 85,186 | $ 99,756
Equity investments | 25,187 | 17,717
Carrying Value [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash and cash equivalents | 411,629 | 261,229
Interest-earning time deposits | 735 | 735
Debt securities available for sale | 85,186 | 99,756
Equity investments | 25,187 | 17,717
Loans held for sale | 952 | 3,530
Loans receivable, net | 2,304,942 | 2,295,021
FHLB of New York stock, at cost | 6,084 | 11,324
Accrued interest receivable | 9,183 | 12,924
Deposits | 2,561,402 | 2,318,050
Debt | 71,711 | 191,161
Subordinated debentures | 37,275 | 37,042
Accrued interest payable | 1,051 | 1,463
Fair Value [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash and cash equivalents | 411,629 | 261,229
Interest-earning time deposits | 735 | 735
Debt securities available for sale | 85,186 | 99,756
Equity investments | 25,187 | 17,717
Loans held for sale | 952 | 3,530
Loans receivable, net | 2,313,204 | 2,309,118
FHLB of New York stock, at cost | 6,084 | 11,324
Accrued interest receivable | 9,183 | 12,924
Deposits | 2,520,191 | 2,323,561
Debt | 71,214 | 194,899
Subordinated debentures | 45,020 | 37,252
Accrued interest payable | 1,051 | 1,463
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Cash and cash equivalents | 411,629 | 261,229
Equity investments | 25,187 | 17,717
Deposits | 1,881,121 | 1,627,871
Significant Other Observable Inputs (Level 2) [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Interest-earning time deposits | 735 | 735
Debt securities available for sale | 85,186 | 99,756
Loans held for sale | 952 | 3,530
FHLB of New York stock, at cost | 6,084 | 11,324
Accrued interest receivable | 9,183 | 12,924
Deposits | 639,070 | 695,690
Debt | 71,214 | 194,899
Subordinated debentures | 45,020 | 37,252
Accrued interest payable | 1,051 | 1,463
Significant Unobservable Inputs (Level 3) [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Loans receivable, net | $ 2,313,204 | $ 2,309,118

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