Annual report [Section 13 and 15(d), not S-K Item 405]

STOCKHOLDERS' EQUITY (Change in Accumulated Other Comprehensive Income) (Details)

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STOCKHOLDERS' EQUITY (Change in Accumulated Other Comprehensive Income) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance $ 2,556,327 $ 2,372,737 $ 2,710,071
Net current period other comprehensive (loss) income (16,337) 74,937 (436,921)
Ending balance 3,142,879 2,556,327 2,372,737
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (302,532) (363,919) 22,763
Other comprehensive income (loss) before reclassification (19,739) 29,006 (386,684)
Amounts reclassified from AOCI into earnings 5,129 32,381 2
Net current period other comprehensive (loss) income (14,610) 61,387 (386,682)
Ending balance (317,142) (302,532) (363,919)
Unrealized Gains (Losses) for AFS Securities Transferred to HTM      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 6 17 35
Other comprehensive income (loss) before reclassification 0 0 0
Amounts reclassified from AOCI into earnings (6) (11) (18)
Net current period other comprehensive (loss) income (6) (11) (18)
Ending balance 0 6 17
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (42,165) (54,610) (1,567)
Other comprehensive income (loss) before reclassification (913) 12,445 (53,043)
Amounts reclassified from AOCI into earnings   0 0
Net current period other comprehensive (loss) income (913) 12,445 (53,043)
Ending balance (43,078) (42,165) (54,610)
Unrealized Gains (Losses) on BOLI      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 1,342 226 (2,596)
Other comprehensive income (loss) before reclassification (16) 10 2,205
Amounts reclassified from AOCI into earnings (792) 1,106 617
Net current period other comprehensive (loss) income (808) 1,116 2,822
Ending balance 534 1,342 226
AOCI Attributable to Parent [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (343,349) (418,286) 18,635
Other comprehensive income (loss) before reclassification (20,668) 41,461 (437,522)
Amounts reclassified from AOCI into earnings 4,331 33,476 601
Net current period other comprehensive (loss) income (16,337) 74,937 (436,921)
Ending balance $ (359,686) $ (343,349) $ (418,286)