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SHAREHOLDERS' EQUITY AND EARNINGS PER COMMON SHARE - Components of OCIL (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Net unrealized loss arising during the period |  |  |
Before Tax | $ (1,572) | $ 784 |
Other comprehensive (loss) income |  |  |
Before Tax | (2,018) | 10,627 | $ (78,848)
Tax Effect | 344 | (2,149) | 18,205
Total other comprehensive (loss) income | (1,674) | 8,478 | (60,643)
Net unrealized gain (loss) on AFS securities: |  |  |
Net unrealized loss arising during the period |  |  |
Before Tax | 103 | 9,515 | (74,359)
Tax Effect | (157) | (1,892) | 17,169
Net of Tax | (54) | 7,623 | (57,190)
Less: reclassification adjustment for gains (losses) realized in net income |  |  |
Before Tax | 50 | 34 | 53
Tax Effect | (12) | (8) | (12)
Net of Tax | 38 | 26 | 41
Other comprehensive (loss) income |  |  |
Before Tax | 53 | 9,481 | (74,412)
Tax Effect | (145) | (1,884) | 17,181
Total other comprehensive (loss) income | (92) | 7,597 | (57,231)
Net unrealized gain (loss) on hedging derivatives |  |  |
Net unrealized loss arising during the period |  |  |
Before Tax | (2,046) | 1,011 | (3,463)
Tax Effect | 474 | (227) | 799
Net of Tax | (1,572) | 784 | (2,664)
Other comprehensive (loss) income |  |  |
Before Tax | (2,046) | 1,011 | (3,463)
Tax Effect | 474 | (227) | 799
Total other comprehensive (loss) income | (1,572) | 784 | (2,664)
Net unrealized gain (loss) on post-retirement plans |  |  |
Net unrealized loss arising during the period |  |  |
Before Tax | (25) | 135 | (973)
Tax Effect | 15 | (38) | 225
Net of Tax | (10) | 97 | (748)
Other comprehensive (loss) income |  |  |
Before Tax | (25) | 135 | (973)
Tax Effect | 15 | (38) | 225
Total other comprehensive (loss) income | $ (10) | $ 97 | $ (748)

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