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BUSINESS SEGMENTS (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Net interest income | $ 482,080 | $ 407,370 | $ 408,432
Eliminations |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Net interest income | 0 | 0 | 0
Eliminations | Treasury |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Net interest income | $ 470,200 | $ 262,900 | $ 0

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