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COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Apr. 30, 2020 | Sep. 30, 2021 | Feb. 04, 2020
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Participating credit facility receivable, ownership interest, amount |  |  | $ 4.2
Participating credit facility receivable, amount |  |  | $ 36.0
Pioneer Bank Litigation |  |  |
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items] |  |  |
Litigation settlement, recovery received | $ 0.5 |  |
Loss contingency, damages sought |  | $ 3.7 |

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