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INVESTMENTS IN LIMITED PARTNERSHIPS (Details) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) item | Sep. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) item
INVESTMENTS IN LIMITED PARTNERSHIPS |  |  |  |  |
Number of investments in affordable housing partnerships | item |  |  | 23 |  | 22
Investments in affordable housing partnerships carrying value, net |  |  | $ 101.2 |  | $ 66.3
Federal affordable housing tax credits | $ 108.9 |  | 108.9 |  |
Expected amortization of investments in affordable housing partnerships | 98.2 |  | 98.2 |  |
Usage of federal affordable housing tax credits | 2.8 | $ 1.9 | 8.4 | $ 5.7 |
Actual amortization of investments in affordable housing partnerships | $ 2.5 | $ 1.7 | $ 7.6 | $ 5.2 |

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