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Loans and Allowance for Credit Losses - Amortized Cost of Loans to Borrowers, Modified (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Jun. 30, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | $ 5,634 | $ 10,193 | $ 21,977 | $ 12,497
% of Portfolio Segment | 0.07% | 0.13% | 0.27% | 0.16%
Term Extension |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | $ 231 | $ 9,563 | $ 4,425 | $ 9,825
Term Extension and Payment Delays |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | 5,403 | 630 | 17,552 | 2,672
Commercial loans | Commercial real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | $ 3,520 |  | $ 3,520 |
% of Portfolio Segment | 0.13% |  | 0.13% |
Commercial loans | Commercial real estate | Term Extension |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | $ 0 |  | $ 0 |
Commercial loans | Commercial real estate | Term Extension and Payment Delays |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | 3,520 |  |  |
Commercial loans | Commercial real estate | Term Extension and Interest Rate Reduction |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period |  |  | 3,520 |
Commercial loans | Commercial and industrial |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | $ 1,883 | $ 9,549 | $ 18,070 | $ 11,591
% of Portfolio Segment | 0.13% | 0.72% | 1.28% | 0.88%
Commercial loans | Commercial and industrial | Term Extension |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | $ 0 | $ 9,549 | $ 4,038 | $ 9,549
Commercial loans | Commercial and industrial | Term Extension and Payment Delays |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | 1,883 | 0 | 14,032 | 2,042
Consumer loans | Consumer real estate |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | $ 231 | $ 644 | $ 369 | $ 906
% of Portfolio Segment | 0.01% | 0.03% | 0.02% | 0.05%
Consumer loans | Consumer real estate | Term Extension |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | $ 231 | $ 14 | $ 369 | $ 276
Consumer loans | Consumer real estate | Term Extension and Payment Delays |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period | $ 0 | $ 630 |  | $ 630
Business banking |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period |  |  | $ 18 |
% of Portfolio Segment |  |  | 0.00% |
Business banking | Term Extension |  |  |  |
Financing Receivable, Troubled Debt Restructuring [Line Items] |  |  |  |
Financing receivable, modified in period |  |  | $ 18 |

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