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Loans Receivable and Allowance for Credit Losses (Delinquency Status of Total Loans) (Details) - USD ($) | Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Sep. 30, 2023
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Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | $ 2,828,933,000 | $ 3,033,784,000 | $ 3,125,647,000 | $ 3,322,139,000
Loans Receivable >90 Days and Accruing | 280,000 | 7,726,000 |  |
Total Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 174,006,000 | 76,703,000 |  |
30 To 59 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 56,179,000 | 29,193,000 |  |
60 To 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 34,877,000 | 8,552,000 |  |
Greater Than 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 82,950,000 | 38,958,000 |  |
Current [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 2,654,927,000 | 2,957,081,000 |  |
Residential [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 227,140,000 | 239,870,000 | 241,050,000 | 251,845,000
Commercial & Multi-family [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 2,080,088,000 | 2,155,929,000 | 2,205,600,000 | 2,349,664,000
Loans Receivable >90 Days and Accruing |  | 6,049,000 |  |
Cannabis Related [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 69,102,000 | 103,206,000 | 103,396,000 | 108,204,000
Construction [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 105,980,000 | 130,589,000 | 142,024,000 | 180,340,000
Commercial Business [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 192,762,000 | 242,239,000 | 264,745,000 | 261,135,000
Business Express [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 78,253,000 | 92,947,000 | 98,957,000 | 101,258,000
Loans Receivable >90 Days and Accruing | 244,000 | 1,677,000 |  |
Home Equity [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 73,566,000 | 66,769,000 | 67,566,000 | 66,046,000
Loans Receivable >90 Days and Accruing | 36,000 |  |  |
Consumer [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 2,042,000 | 2,235,000 | $ 2,309,000 | $ 3,647,000
Originated loans [Member] | Residential [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 227,140,000 | 239,870,000 |  |
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 | 5,081,000 | 3,531,000 |  |
Originated loans [Member] | Residential [Member] | 30 To 59 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 4,779,000 | 3,229,000 |  |
Originated loans [Member] | Residential [Member] | 60 To 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable |  |  |  |
Originated loans [Member] | Residential [Member] | Greater Than 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 302,000 | 302,000 |  |
Originated loans [Member] | Residential [Member] | Current [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 222,059,000 | 236,339,000 |  |
Originated loans [Member] | Commercial & Multi-family [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 2,080,088,000 | 2,155,929,000 |  |
Loans Receivable >90 Days and Accruing |  | 6,049,000 |  |
Originated loans [Member] | Commercial & Multi-family [Member] | Total Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 110,220,000 | 41,855,000 |  |
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 | 28,596,000 | 8,279,000 |  |
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 | 19,044,000 | 2,673,000 |  |
Originated loans [Member] | Commercial & Multi-family [Member] | Greater Than 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 62,580,000 | 30,903,000 |  |
Originated loans [Member] | Commercial & Multi-family [Member] | Current [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 1,969,868,000 | 2,114,074,000 |  |
Originated loans [Member] | Cannabis Related [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 69,102,000 | 103,206,000 |  |
Originated loans [Member] | Cannabis Related [Member] | Total Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable |  |  |  |
Originated loans [Member] | Cannabis Related [Member] | 30 To 59 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable |  |  |  |
Originated loans [Member] | Cannabis Related [Member] | 60 To 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable |  |  |  |
Originated loans [Member] | Cannabis Related [Member] | Greater Than 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable |  |  |  |
Originated loans [Member] | Cannabis Related [Member] | Current [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 69,102,000 | 103,206,000 |  |
Originated loans [Member] | Construction [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 105,980,000 | 130,589,000 |  |
Loans Receivable >90 Days and Accruing |  |  |  |
Originated loans [Member] | Construction [Member] | Total Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 31,302,000 | 2,415,000 |  |
Originated loans [Member] | Construction [Member] | 30 To 59 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 14,996,000 |  |  |
Originated loans [Member] | Construction [Member] | 60 To 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 13,996,000 | 1,829,000 |  |
Originated loans [Member] | Construction [Member] | Greater Than 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 2,310,000 | 586,000 |  |
Originated loans [Member] | Construction [Member] | Current [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 74,678,000 | 128,174,000 |  |
Originated loans [Member] | Commercial Business [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 192,762,000 | 242,239,000 |  |
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 | 21,035,000 | 13,500,000 |  |
Originated loans [Member] | Commercial Business [Member] | 30 To 59 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 3,633,000 | 9,125,000 |  |
Originated loans [Member] | Commercial Business [Member] | 60 To 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 1,238,000 | 580,000 |  |
Originated loans [Member] | Commercial Business [Member] | Greater Than 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 16,164,000 | 3,795,000 |  |
Originated loans [Member] | Commercial Business [Member] | Current [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 171,727,000 | 228,739,000 |  |
Originated loans [Member] | Business Express [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 78,253,000 | 92,947,000 |  |
Loans Receivable >90 Days and Accruing | 244,000 | 1,677,000 |  |
Originated loans [Member] | Business Express [Member] | Total Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 4,058,000 | 13,307,000 |  |
Originated loans [Member] | Business Express [Member] | 30 To 59 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 2,344,000 | 6,714,000 |  |
Originated loans [Member] | Business Express [Member] | 60 To 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 599,000 | 3,452,000 |  |
Originated loans [Member] | Business Express [Member] | Greater Than 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 1,115,000 | 3,141,000 |  |
Originated loans [Member] | Business Express [Member] | Current [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 74,195,000 | 79,640,000 |  |
Originated loans [Member] | Home Equity [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 73,566,000 | 66,769,000 |  |
Loans Receivable >90 Days and Accruing | 36,000 |  |  |
Originated loans [Member] | Home Equity [Member] | Total Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 2,310,000 | 2,095,000 |  |
Originated loans [Member] | Home Equity [Member] | 30 To 59 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 1,831,000 | 1,846,000 |  |
Originated loans [Member] | Home Equity [Member] | 60 To 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable |  | 18,000 |  |
Originated loans [Member] | Home Equity [Member] | Greater Than 90 Days Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 479,000 | 231,000 |  |
Originated loans [Member] | Home Equity [Member] | Current [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 71,256,000 | 64,674,000 |  |
Originated loans [Member] | Consumer [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | 2,042,000 | 2,235,000 |  |
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 |  |  |  |
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 Past Due [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable |  |  |  |
Originated loans [Member] | Consumer [Member] | Current [Member] |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total Loans Receivable | $ 2,042,000 | $ 2,235,000 |  |

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