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Loans - Amortized cost basis of loans (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 360 | $ 47
% of Total Class of Financing Receivable | 0.10% |
Term Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 341 |
Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | 19 | 47
Commercial real estate | Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost |  | $ 47
Residential mortgage | Term Extension |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 341 |
% of Total Class of Financing Receivable | 0.10% |
Residential mortgage | Interest Rate Reduction |  |
Financing Receivable, Modifications [Line Items] |  |
Amortized Cost | $ 19 |

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