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INVESTMENTS IN LIMITED PARTNERSHIPS (Details) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 USD ($) item | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) item
INVESTMENTS IN LIMITED PARTNERSHIPS |  |  |
Number of investments in affordable housing partnerships | item | 22 |  | 22
Investments in affordable housing partnerships carrying value, net | $ 69.9 |  | $ 66.3
Federal affordable housing tax credits | 73.1 |  |
Expected amortization of investments in affordable housing partnerships | 66.3 |  |
Usage of federal affordable housing tax credits | 2.8 | $ 1.9 |
Actual amortization of investments in affordable housing partnerships | $ 2.6 | $ 1.8 |

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