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SEGMENT INFORMATION - Reconciliation of the Reportable Segment Financial Information (Details) - Segment Reconciling Items [Member] - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Average assets: |  |
Total average interest-earning assets for segments | $ 18,311,327 | $ 18,023,161
Average non-interest earning assets | 795,775 | 835,138
Total consolidated average assets | $ 19,107,102 | $ 18,858,299

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