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Loans Receivable and Allowance for Credit Losses (Delinquency Status of Total Loans) (Details) - USD ($) | Sep. 30, 2024 | Dec. 31, 2023 | Sep. 30, 2023
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | $ 3,125,647,000 | $ 3,317,402,000 | $ 3,322,139,000
Loans Receivable >90 Days and Accruing | 6,220,000 | 0 |
Total Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 71,800,000 | 32,654,000 |
30 To 59 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 33,450,000 | 15,338,000 |
60 To 90 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 4,645,000 | 8,487,000 |
Greater Than 90 Days [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 33,705,000 | 8,829,000 |
Current [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 3,053,847,000 | 3,284,748,000 |
Residential [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 241,050,000 | 248,295,000 | 251,845,000
Commercial & Multi-family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 2,296,886,000 | 2,434,115,000 | 2,444,887,000
Loans Receivable >90 Days and Accruing | 5,520,000 |  |
Construction [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 146,471,000 | 192,816,000 | 185,202,000
Loans Receivable >90 Days and Accruing | 313,000 |  |
Commercial Business [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 272,408,000 | 269,274,000 | 269,254,000
Business Express [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 98,957,000 | 102,928,000 | 101,258,000
Loans Receivable >90 Days and Accruing | 387,000 |  |
Home Equity [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 67,566,000 | 66,331,000 | 66,046,000
Consumer [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 2,309,000 | 3,643,000 | $ 3,647,000
Originated loans [Member] | Residential [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 241,050,000 | 248,295,000 |
Loans Receivable >90 Days and Accruing |  |  |
Originated loans [Member] | Residential [Member] | Total Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 5,675,000 | 4,971,000 |
Originated loans [Member] | Residential [Member] | 30 To 59 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 4,972,000 | 4,701,000 |
Originated loans [Member] | Residential [Member] | 60 To 90 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 391,000 |  |
Originated loans [Member] | Residential [Member] | Greater Than 90 Days [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 312,000 | 270,000 |
Originated loans [Member] | Residential [Member] | Current [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 235,375,000 | 243,324,000 |
Originated loans [Member] | Commercial & Multi-family [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 2,296,886,000 | 2,434,115,000 |
Loans Receivable >90 Days and Accruing | 5,520,000 |  |
Originated loans [Member] | Commercial & Multi-family [Member] | Total Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 40,604,000 | 16,571,000 |
Originated loans [Member] | Commercial & Multi-family [Member] | 30 To 59 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 10,905,000 | 1,853,000 |
Originated loans [Member] | Commercial & Multi-family [Member] | 60 To 90 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 308,000 | 7,876,000 |
Originated loans [Member] | Commercial & Multi-family [Member] | Greater Than 90 Days [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 29,391,000 | 6,842,000 |
Originated loans [Member] | Commercial & Multi-family [Member] | Current [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 2,256,282,000 | 2,417,544,000 |
Originated loans [Member] | Construction [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 146,471,000 | 192,816,000 |
Loans Receivable >90 Days and Accruing | 313,000 |  |
Originated loans [Member] | Construction [Member] | Total Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 586,000 | 4,227,000 |
Originated loans [Member] | Construction [Member] | 30 To 59 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable |  | 3,641,000 |
Originated loans [Member] | Construction [Member] | 60 To 90 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable |  |  |
Originated loans [Member] | Construction [Member] | Greater Than 90 Days [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 586,000 | 586,000 |
Originated loans [Member] | Construction [Member] | Current [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 145,885,000 | 188,589,000 |
Originated loans [Member] | Commercial Business [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 272,407,000 | 269,274,000 |
Loans Receivable >90 Days and Accruing |  |  |
Originated loans [Member] | Commercial Business [Member] | Total Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 8,613,000 | 3,757,000 |
Originated loans [Member] | Commercial Business [Member] | 30 To 59 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 5,512,000 | 2,314,000 |
Originated loans [Member] | Commercial Business [Member] | 60 To 90 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 155,000 | 362,000 |
Originated loans [Member] | Commercial Business [Member] | Greater Than 90 Days [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 2,946,000 | 1,081,000 |
Originated loans [Member] | Commercial Business [Member] | Current [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 263,794,000 | 265,517,000 |
Originated loans [Member] | Business Express [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 98,957,000 | 102,928,000 |
Loans Receivable >90 Days and Accruing | 387,000 |  |
Originated loans [Member] | Business Express [Member] | Total Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 13,913,000 | 2,221,000 |
Originated loans [Member] | Business Express [Member] | 30 To 59 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 9,776,000 | 1,922,000 |
Originated loans [Member] | Business Express [Member] | 60 To 90 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 3,750,000 | 249,000 |
Originated loans [Member] | Business Express [Member] | Greater Than 90 Days [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 387,000 | 50,000 |
Originated loans [Member] | Business Express [Member] | Current [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 85,044,000 | 100,707,000 |
Originated loans [Member] | Home Equity [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 67,566,000 | 66,331,000 |
Loans Receivable >90 Days and Accruing |  |  |
Originated loans [Member] | Home Equity [Member] | Total Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 2,407,000 | 907,000 |
Originated loans [Member] | Home Equity [Member] | 30 To 59 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 2,285,000 | 907,000 |
Originated loans [Member] | Home Equity [Member] | 60 To 90 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 41,000 |  |
Originated loans [Member] | Home Equity [Member] | Greater Than 90 Days [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 81,000 |  |
Originated loans [Member] | Home Equity [Member] | Current [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 65,159,000 | 65,424,000 |
Originated loans [Member] | Consumer [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 2,309,000 | 3,643,000 |
Loans Receivable >90 Days and Accruing |  |  |
Originated loans [Member] | Consumer [Member] | Total Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 2,000 |  |
Originated loans [Member] | Consumer [Member] | 30 To 59 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable |  |  |
Originated loans [Member] | Consumer [Member] | 60 To 90 Days Past Due [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable |  |  |
Originated loans [Member] | Consumer [Member] | Greater Than 90 Days [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | 2,000 |  |
Originated loans [Member] | Consumer [Member] | Current [Member] |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Total Loans Receivable | $ 2,307,000 | $ 3,643,000 |

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