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INVESTMENT SECURITIES - Narrative (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Proceeds from sale of available-for-sale investment securities | $ 0 |  | $ 0 | $ 102,955,000
Debt securities, available-for-sale, gain (loss) |  |  | $ 0 | 1,052,000
Guaranteed mortgage-backed securities | Floating interest rate |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Proceeds from sale of available-for-sale investment securities |  | $ 115,200,000 |  | 115,200,000
Debt securities, available-for-sale, gain (loss) |  | $ 1,100,000 |  | $ 1,100,000
Investment securities |  |  |  |
Debt Securities, Available-for-sale [Line Items] |  |  |  |
Average percent of amortized cost for securities in unrealized loss positions for more than 12 months | 95.10% |  | 95.10% |

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