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Commitments and Contingent Liabilities (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2025 | Dec. 31, 2024
Unadvanced Commitment on Impaired Loan |  |
Schedule of Commitments [Line Items] |  |
Estimated losses attributable to unadvanced commitments on impaired loans | $ 6,300 | $ 6,100
Commitments to extend credit |  |
Schedule of Commitments [Line Items] |  |
Off-balance sheet financial instruments, contractual amounts | 2,919,534 | 3,001,565
Commitments to extend credit | Fixed Rate Loan Commitment |  |
Schedule of Commitments [Line Items] |  |
Off-balance sheet financial instruments, contractual amounts | 127,200 | 156,500
Letters of credit |  |
Schedule of Commitments [Line Items] |  |
Off-balance sheet financial instruments, contractual amounts | $ 107,535 | $ 137,926
Letters of credit | Maximum |  |
Schedule of Commitments [Line Items] |  |
Remaining term | 4 years 9 months |
Letters of credit | Minimum |  |
Schedule of Commitments [Line Items] |  |
Remaining term | 1 month |

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- Definition Loans and Leases Receivable, Impaired Loans, Commitment to Lend, Reserve + References No definition available. + Details
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- Details
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- Details
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