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STOCK-BASED COMPENSATION - Performance Units - Additional Information (Details) - Omnibus Plan [Member] - Performance Shares [member] - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Performance units program description |  |  | Performance units granted vest on the third anniversary of the effective date of the award based on actual achievement of two performance metrics weighted equally: relative total shareholder return (“Relative TSR”), compared to companies that comprise the KBW Nasdaq Regional Banking Index, and the achievement of a tangible book value per share (“TBVPS”) goal, which is measured based upon the growth in the tangible book value during the performance cycle, adjusted for certain allowable non-recurring transactions. The participant may earn 50% of their target opportunity for threshold level performance and up to 150% of their target opportunity for maximum level performance, based on the individual achievement of each performance goal during a three-year performance cycle. Amounts between threshold, target and maximum performance will vest in a proportional amount. |
Stock-based compensation expense | $ 0.8 | $ 0.7 | $ 2.1 | $ 1.8
Unrecognized compensation cost related to unvested performance units | $ 4.4 |  | $ 4.4 |
Period for cost recognition not yet recognized |  |  | 1 year 10 months 24 days |
Requisite service period |  |  | 3 years |
Minimum [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Target opportunity, percentage |  |  | 50.00% |
Maximum [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Target opportunity, percentage |  |  | 150.00% |
Executives [Member] |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |
Performance units program description |  |  | These awards, which are granted to executives, have the right to receive dividend equivalents. Such dividend equivalents accrue during the performance cycle and are paid in cash on the vesting date based upon achievement of the performance goals. |

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