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Fair Value Measurements and Fair Values of Financial Instruments (Carrying Values and Estimated Fair Values of Financial Instruments) (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Debt securities available for sale, at fair value | $ 87,769 | $ 91,715 | $ 85,186
Equity investments | 9,093 | 17,686 | 25,187
Carrying Value [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and cash equivalents | 279,523 | 229,359 |
Interest-earning time deposits | 735 | 735 |
Debt securities available for sale, at fair value | 87,769 | 91,715 |
Equity investments | 9,093 | 17,686 |
Loans held for sale | 1,287 | 658 |
Loans receivable, net | 3,279,708 | 3,045,331 |
FHLB of New York stock, at cost | 24,917 | 20,113 |
Accrued interest receivable | 16,072 | 13,455 |
Deposits | 2,979,080 | 2,811,607 |
Debt | 472,811 | 382,261 |
Subordinated debentures | 37,624 | 37,508 |
Accrued interest payable | 5,777 | 3,073 |
Fair Value [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and cash equivalents | 279,523 | 229,359 |
Interest-earning time deposits | 735 | 735 |
Debt securities available for sale, at fair value | 87,769 | 91,715 |
Equity investments | 9,093 | 17,686 |
Loans held for sale | 1,287 | 658 |
Loans receivable, net | 3,112,980 | 2,876,925 |
FHLB of New York stock, at cost | 24,917 | 20,113 |
Accrued interest receivable | 16,072 | 13,455 |
Deposits | 2,978,654 | 2,499,978 |
Debt | 472,184 | 377,227 |
Subordinated debentures | 39,299 | 40,113 |
Accrued interest payable | 5,777 | 3,073 |
(Level 1) Quoted Prices in Active Markets for Identical Assets [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cash and cash equivalents | 279,523 | 229,359 |
Equity investments | 9,093 | 17,686 | 25,187
Deposits | 2,120,514 | 1,713,754 |
(Level 2) Significant Other Observable Inputs [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, at fair value | 87,769 | 91,715 | $ 85,186
Loans held for sale | 1,287 | 658 |
FHLB of New York stock, at cost | 24,917 | 20,113 |
Accrued interest receivable | 16,072 | 13,455 |
Deposits | 858,140 | 786,224 |
Debt | 472,184 | 377,227 |
Subordinated debentures | 39,299 | 40,113 |
Accrued interest payable | 5,777 | 3,073 |
(Level 3) Significant Unobservable Inputs [Member] |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Loans receivable, net | $ 3,112,980 | $ 2,876,925 |

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