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Commitments (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2021
Unadvanced Commitment on Impaired Loan |  |
Schedule of Commitments [Line Items] |  |
Estimated losses attributable to unadvanced commitments on impaired loans | $ 8,400 | $ 7,600
Commitments to extend credit |  |
Schedule of Commitments [Line Items] |  |
Off-balance sheet financial instruments, contractual amounts | 2,710,183 | 2,481,173
Commitments to extend credit | Fixed Rate Loan Commitment |  |
Schedule of Commitments [Line Items] |  |
Off-balance sheet financial instruments, contractual amounts | 244,200 | 238,700
Letters of credit |  |
Schedule of Commitments [Line Items] |  |
Off-balance sheet financial instruments, contractual amounts | $ 78,568 | $ 77,314
Letters of credit | Maximum |  |
Schedule of Commitments [Line Items] |  |
Remaining term | 11 years |
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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