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OFF-BALANCE SHEET COMMITMENTS AND CONTINGENCIES - Additional Information (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
Capital Contributions, Small Business Investment Corporation |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Investments in and advance to affiliates, subsidiaries, associates, and joint ventures | $ 27,300 |  | $ 27,300 |  | $ 23,500
Small Business Investment Corporations |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Investments in and advance to affiliates, subsidiaries, associates, and joint ventures | 12,700 |  | 12,700 |  | 8,000
Capital Contributions, Low Income Housing Partnerships |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Investments in and advance to affiliates, subsidiaries, associates, and joint ventures | 7,200 |  | 7,200 |  | 7,300
Amortization | 360 | $ 178 | 808 | $ 533 |
Capital Contributions, Low Income Housing Partnerships | Other Commitments, Unfunded Commitments |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Unfunded commitments | 3,500 |  | 3,500 |  | 3,700
Capital Contributions, Limited Partnerships Corporation |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Investments in and advance to affiliates, subsidiaries, associates, and joint ventures | 4,100 |  | 4,100 |  | 4,100
Amortization | 0 | $ 0 | 0 | $ 0 |
Capital Contributions, Limited Partnerships Corporation | Other Commitments, Unfunded Commitments |  |  |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |  |  |
Unfunded commitments | $ 3,200 |  | $ 3,200 |  | $ 3,200

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