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REGULATORY MATTERS, COMMITMENTS AND CONTINGENCIES - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2025 | Dec. 31, 2024
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |
One-time charge associated with FDIC implementation of special assessment | $ 7.4 | $ 7.4 |
Payment for one-time charge associated with FDIC implementation of special assessment |  | 4.7 |
Commitments to extend credit amount | 2,100.0 | 2,100.0 |
Valuation allowance | 80.8 | 80.8 | $ 119.1
Litigation in Virgin Islands [Member] | Virgin Islands [Member] |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |
Litigation reserve | 1.9 | 1.9 |
Valuation adjustment | 2.8 |  |
Standby Letters Of Credit [Member] |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |
Commitments to extend credit amount | 78.0 | 78.0 |
Credit Card [Member] |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |
Commitments to extend credit amount | $ 800.0 | $ 800.0 |
Basel III [Member] |  |  |
Compliance With Regulatory Capital Requirements Under Banking Regulations [Line Items] |  |  |
Capital Conservation Buffer | 2.50% | 2.50% |

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