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SECURITIES - Narrative (Details) $ in Thousands | 2 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Mar. 06, 2024 USD ($) | Dec. 31, 2023 USD ($) security | Dec. 31, 2022 USD ($) | Dec. 31, 2023 USD ($) security | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($)
SECURITIES |  |  |  |  |  |
Number of securities in an unrealized loss position for a period of twelve months or more | security |  | 665 |  | 665 |  |
Number of securities in an unrealized loss position for a period of less than twelve months | security |  | 116 |  | 116 |  |
Allowance for credit losses |  | $ 0 |  | $ 0 |  |
Debt securities, available-for-sale, accrued interest |  | 6,000 |  | 6,000 |  |
Proceeds from sales of securities available-for-sale |  |  |  | 185,280 | $ 0 | $ 0
Impairments of downward adjustments |  |  |  | 200 |  |
Adjustment to carrying value of equity securities with no readily determinable fair value |  |  |  | 200 |  |
Upward adjustment on equity securities with no readily determinable fair value |  | 0 | $ 0 | 0 | 0 |
Proceeds from sale of equity securities |  | 0 | 0 | $ 0 | 0 |
Subsequent Event |  |  |  |  |  |
SECURITIES |  |  |  |  |  |
Proceeds from sale of equity securities | $ 66,800 |  |  |  |  |
Equity Securities, FV-NI, Realized Loss | $ 3,400 |  |  |  |  |
Municipal |  |  |  |  |  |
SECURITIES |  |  |  |  |  |
Percentage of securities with general obligation issue |  |  |  | 79.00% |  |
Allowance for credit losses |  | 0 |  | $ 0 |  |
Corporate |  |  |  |  |  |
SECURITIES |  |  |  |  |  |
Allowance for credit losses |  | 0 |  | 0 |  |
Assets Pledged |  |  |  |  |  |
SECURITIES |  |  |  |  |  |
Carrying value of securities pledged to secure public and trust deposits |  | $ 419,400 | $ 332,600 | $ 419,400 | $ 332,600 |

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