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Allowance for Credit Losses - Schedule of Loans for Borrowers Experiencing Financial Difficulties Modified (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2023
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms |  | $ 47,229
Payments in Default |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms | $ 19,882 | 20,817
Commercial | Commercial, industrial and other |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms |  | 39,153
Commercial | Commercial, industrial and other | Payments in Default |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms | 18,727 | 18,749
Commercial real estate | Non-construction |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms | 5,709 |
Commercial real estate | Non-construction | Payments in Default |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms | 95 | 923
Home equity |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms |  | 203
Home equity | Payments in Default |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms | 203 | 203
Residential real estate |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms |  | 2,113
Residential real estate | Payments in Default |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms | 817 | 902
Premium finance receivables | Property and casualty insurance loans |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms |  | 51
Premium finance receivables | Property and casualty insurance loans | Payments in Default |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |
Loans in payment default under restructured terms | $ 40 | $ 40

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