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STOCKHOLDERS' EQUITY (Change in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | $ 2,710,071 | $ 2,708,490 | $ 2,513,102
Other comprehensive (loss) income | (436,921) | (52,380) | 35,440
Ending balance | 2,372,737 | 2,710,071 | 2,708,490
Unrealized Gains (Losses) on AFS Securities |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | 22,763 | 74,161 | 37,877
Other comprehensive income (loss) before reclassification | (386,684) | (51,329) | 45,996
Amounts reclassified from AOCI into earnings | 2 | (69) | (9,712)
Other comprehensive (loss) income | (386,682) | (51,398) | 36,284
Ending balance | (363,919) | 22,763 | 74,161
Unrealized Gains (Losses) for AFS Securities Transferred to HTM |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | 35 | 55 | 75
Other comprehensive income (loss) before reclassification | 0 | 0 | 0
Amounts reclassified from AOCI into earnings | (18) | (20) | (20)
Other comprehensive (loss) income | (18) | (20) | (20)
Ending balance | 17 | 35 | 55
Change in Fair Value of Cash Flow Hedge |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | (1,567) | 0 | (782)
Other comprehensive income (loss) before reclassification | (53,043) | (1,520) | (699)
Amounts reclassified from AOCI into earnings |  | (47) | 1,481
Other comprehensive (loss) income | (53,043) | (1,567) | 782
Ending balance | (54,610) | (1,567) | 0
Unrealized Gains (Losses) on BOLI |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | (2,596) | (3,201) | (1,595)
Other comprehensive income (loss) before reclassification | 2,205 | 0 | (2,098)
Amounts reclassified from AOCI into earnings | 617 | 605 | 492
Other comprehensive (loss) income | 2,822 | 605 | (1,606)
Ending balance | 226 | (2,596) | (3,201)
AOCI Attributable to Parent |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance | 18,635 | 71,015 | 35,575
Other comprehensive income (loss) before reclassification | (437,522) | (52,849) | 43,199
Amounts reclassified from AOCI into earnings | 601 | 469 | (7,759)
Other comprehensive (loss) income | (436,921) | (52,380) | 35,440
Ending balance | $ (418,286) | 18,635 | 71,015
Cumulative Effect, Period of Adoption, Adjustment |  |  |
AOCI Attributable to Parent, Net of Tax [Roll Forward] |  |  |
Beginning balance |  | $ (39,053) |
Ending balance |  |  | $ (39,053)

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