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Restricted Investment Securities - Trading (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Investments, Debt and Equity Securities [Abstract] |  |  |  |  |
Trading securities portfolio | $ 1,107 |  | $ 1,107 |  | $ 915
Debt securities, trading, realized gains | $ 100 | $ 41 | $ 100 | $ 100 |

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