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, 2025
Dec. 31, 2024
Dec. 31, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance $ 3,142,879 $ 2,556,327 $ 2,372,737
Other comprehensive income (loss) 103,599 (16,337) 74,937
Ending balance 5,006,398 3,142,879 2,556,327
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (317,142) (302,532) (363,919)
Other comprehensive income (loss) before reclassification 82,377 (19,739) 29,006
Amounts reclassified from AOCI into earnings 63 5,129 32,381
Other comprehensive income (loss) 82,440 (14,610) 61,387
Ending balance (234,702) (317,142) (302,532)
Unrealized Gains (Losses) for AFS Securities Transferred to HTM      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 0 6 17
Other comprehensive income (loss) before reclassification 0 0 0
Amounts reclassified from AOCI into earnings 0 (6) (11)
Other comprehensive income (loss) 0 (6) (11)
Ending balance 0 0 6
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (43,078) (42,165) (54,610)
Other comprehensive income (loss) before reclassification 21,913 (913) 12,445
Amounts reclassified from AOCI into earnings 0 0 0
Other comprehensive income (loss) 21,913 (913) 12,445
Ending balance (21,165) (43,078) (42,165)
Unrealized Gains (Losses) on BOLI      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 534 1,342 226
Other comprehensive income (loss) before reclassification 39 (16) 10
Amounts reclassified from AOCI into earnings (793) (792) 1,106
Other comprehensive income (loss) (754) (808) 1,116
Ending balance (220) 534 1,342
AOCI Attributable to Parent [Member]      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (359,686) (343,349) (418,286)
Other comprehensive income (loss) before reclassification 104,329 (20,668) 41,461
Amounts reclassified from AOCI into earnings (730) 4,331 33,476
Other comprehensive income (loss) 103,599 (16,337) 74,937
Ending balance $ (256,087) $ (359,686) $ (343,349)