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Loans Receivable, Allowance for Credit Losses and Credit Quality - Loans modified to borrowers experiencing financial difficulty (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Loans Receivable, Allowance for Credit Losses and Credit Quality |  |  |  |  |
Percentage of loans modified | 100.00% | 100.00% |  | 100.00% |
Net Charge off | $ 693 | $ 844 | $ 5,305 | $ 3,441 | $ 8,191
Interest rate reduction |  |  |  |  |
Loans Receivable, Allowance for Credit Losses and Credit Quality |  |  |  |  |
Loans modified in period | $ 37,098 |  |  | $ 37,098 |
Term extension and interest rate increase |  |  |  |  |
Loans Receivable, Allowance for Credit Losses and Credit Quality |  |  |  |  |
Loans modified in period |  |  | 6,200 |  | 6,200
Commercial |  |  |  |  |
Loans Receivable, Allowance for Credit Losses and Credit Quality |  |  |  |  |
Percentage of loans modified | 67.48% | 65.44% |  | 67.48% |
Commercial | Commercial real estate | Interest rate reduction |  |  |  |  |
Loans Receivable, Allowance for Credit Losses and Credit Quality |  |  |  |  |
Loans modified in period | $ 37,098 |  |  | $ 37,098 |
Percentage of loans modified | 2.00% |  |  | 2.00% |
Commercial | Commercial real estate | Term extension and interest rate increase |  |  |  |  |
Loans Receivable, Allowance for Credit Losses and Credit Quality |  |  |  |  |
Loans modified in period |  |  | $ 6,200 |  | $ 6,200
Percentage of loans modified |  |  | 0.40% |  | 0.40%
Net Charge off |  |  | $ 3,100 |  | $ 3,100

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- Definition Amount, excluding accrued interest, of decrease in allowance for credit loss on financing receivable from writeoff. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-6 + Details
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