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DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES - Schedule of Net Gains (Losses) Relating to Free-Standing Derivative Instruments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Interest rate contracts | Other noninterest income |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on derivative instruments, net, pretax, total | $ (109) | $ 44 | $ (243) | $ 187
Risk participation agreement | Other noninterest income |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on derivative instruments, net, pretax, total | (4) | 8 | (13) | 41
Interest rate lock commitments | Mortgage banking activity |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on derivative instruments, net, pretax, total | 789 | (948) | 4,701 | 1,168
Forward contracts related to mortgage loans held for sale | Mortgage banking activity |  |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |  |
Gain (loss) on derivative instruments, net, pretax, total | $ (4,368) | $ 1,482 | $ (13,030) | $ 6,242

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