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SECURITIES - Additional Information (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2024 USD ($) security | Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) security | Dec. 31, 2023 USD ($) security
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Number of securities transferred | security |  |  | 74 |
Transfer of debt securities, fair value |  |  | $ 213,700 |
Net unrealized holding gain (loss) |  |  | $ 5,600 |
Reclassification adjustment for realized gains included in net income, tax | $ 0 | $ 5 |  |
Number of securities holdings | security | 0 |  |  | 0
Shareholders equity, percentage | 10.00% |  |  | 10.00%
Collateral Pledged |  |  |  |
Debt and Equity Securities, FV-NI [Line Items] |  |  |  |
Securities pledged to public deposits | $ 492,400 |  |  | $ 489,000

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