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SEGMENT INFORMATION - Reconciliation of the Reportable Segment Financial Information (Details) - Segment Reconciling Items [Member] - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Average assets: |  |  |
Total average earning assets for segments | $ 18,126,256 | $ 17,866,846 | $ 18,517,104
Average non-earning assets | 835,100 | 839,577 | 861,545
Total consolidated average assets | $ 18,961,356 | $ 18,706,423 | $ 19,378,649

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