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Allowance for Credit Losses - Loans - Loan modifications to borrowers experiencing financial difficulty (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Unfunded loan commitments | $ 0 | $ 0 |
Modified to borrowers which subsequently defaulted | 0 | 0 |
Total | 1,025,687 |  | $ 1,038,271
Current period gross charge-offs, Total | 164 | 139 |
Maturity date extensions |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Amortized Cost Basis | 185 | $ 439 |
Extended Maturity and Interest Rate Reduction |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Amortized Cost Basis | $ 171 |  |
Commercial real estate (owner occupied) |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Term extension date | 5 years |  |
Commercial real estate (owner occupied) | Maturity date extensions |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Amortized Cost Basis | $ 185 |  |
Percentage of Total Class of Loans | 0.21% |  |
Other commercial and industrial |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Term extension date | 9 months | 5 months |
Total | $ 148,805 |  | 159,424
Current period gross charge-offs, Total | 103 |  |
Other commercial and industrial | Maturity date extensions |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Amortized Cost Basis |  | $ 439 |
Percentage of Total Class of Loans |  | 0.29% |
Other commercial and industrial | Extended Maturity and Interest Rate Reduction |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Amortized Cost Basis | $ 171 |  |
Percentage of Total Class of Loans | 0.11% |  |
Residential mortgage |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total | $ 176,991 |  | 174,670
Other commercial real estate (non-owner occupied) |  |  |
Financing Receivable, Allowance for Credit Loss [Line Items] |  |  |
Total | $ 229,574 |  | $ 240,286

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