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RELATED PARTY TRANSACTIONS (Details) - USD ($) | 3 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 30, 2023 | Dec. 31, 2023 | Mar. 06, 2023 | Dec. 31, 2022 | Aug. 15, 2016
Debt Instrument [Line Items] |  |  |  |  |
Deposits |  | $ 5,737,292,000 |  | $ 5,277,912,000 |
Amount of loan |  | $ 5,642,012,000 |  | 4,853,495,000 |
Exercise of stock options (in shares) |  | 220,200 |  |  |
Executive officer |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount of loan |  |  | $ 7,500,000 |  | $ 780,000
Interest rate on loan to related party |  |  | 5.70% |  | 2.10%
Exercise of stock options (in shares) | 220,200 |  |  |  |
Number of shares issued (in shares) | 71,655 |  |  |  |
Equity Incentive Plan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount of loan |  | $ 0 |  | 780,000 |
PASL Holding LLC | Management | Principal officers, directors, and their affiliates |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Deposits |  | $ 769,000 |  | $ 4,600,000 |

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