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Off-Balance Sheet Commitments and Contingencies - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Capital Contributions in SBICs and CDEs |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Restricted stock and investments | $ 23,500 | $ 21,700 |
Investments in SBICs and other limited partnerships |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Restricted stock and investments | 8,000 | 6,800 |
Capital Contributions, Low Income Housing Partnerships |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Restricted stock and investments | 7,300 | 3,800 |
Amortization | 711 | 747 | $ 803
Capital Contributions, Low Income Housing Partnerships | Other Commitments, Unfunded Commitments |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Accrued interest payable and accrued liabilities | 3,700 | 796 |
Capital Contributions, Limited Partnerships Corporation |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Restricted stock and investments | 4,100 | 0 |
Amortization | 0 | 0 | $ 0
Capital Contributions, Limited Partnerships Corporation | Other Commitments, Unfunded Commitments |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Accrued interest payable and accrued liabilities | $ 3,200 | $ 0 |

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