Quarterly report pursuant to Section 13 or 15(d)

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
 3 Months Ended 6 Months Ended
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2024
Jun. 30, 2023
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance $ 2,548,928 $ 2,556,327 $ 2,440,236 $ 2,372,737 $ 2,556,327 $ 2,372,737
Net current period other comprehensive loss (8,289) (30,949) (48,934) 56,353 (39,238) 7,419
Ending balance 3,043,686 2,548,928 2,424,470 2,440,236 3,043,686 2,424,470
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance (323,035) (302,532) (321,265) (363,919) (302,532) (363,919)
Other comprehensive loss before reclassification (12,917)   (32,544)   (33,417) (476)
Amounts reclassified from AOCI into earnings 5,148   (2)   5,145 10,584
Net current period other comprehensive loss (7,769)   (32,546)   (28,272) 10,108
Ending balance (330,804) (323,035) (353,811) (321,265) (330,804) (353,811)
Unrealized Gains (Losses) for AFS Securities Transferred to HTM            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance 4 6 14 17 6 17
Other comprehensive loss before reclassification 0   0   0 0
Amounts reclassified from AOCI into earnings (3)   (2)   (5) (5)
Net current period other comprehensive loss (3)   (2)   (5) (5)
Ending balance 1 4 12 14 1 12
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance (52,418) (42,165) (40,896) (54,610) (42,165) (54,610)
Other comprehensive loss before reclassification (357)   (16,325)   (10,610) (2,611)
Amounts reclassified from AOCI into earnings 0   0   0 0
Net current period other comprehensive loss (357)   (16,325)   (10,610) (2,611)
Ending balance (52,775) (52,418) (57,221) (40,896) (52,775) (57,221)
Unrealized Gains (Losses) on BOLI            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance 1,151 1,342 214 226 1,342 226
Other comprehensive loss before reclassification 0   0   (16) 10
Amounts reclassified from AOCI into earnings (160)   (61)   (335) (83)
Net current period other comprehensive loss (160)   (61)   (351) (73)
Ending balance 991 1,151 153 214 991 153
AOCI Attributable to Parent [Member]            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance (374,298) (343,349) (361,933) (418,286) (343,349) (418,286)
Other comprehensive loss before reclassification (13,274)   (48,869)   (44,043) (3,077)
Amounts reclassified from AOCI into earnings 4,985   (65)   4,805 10,496
Net current period other comprehensive loss (8,289) (30,949) (48,934) 56,353 (39,238) 7,419
Ending balance $ (382,587) $ (374,298) $ (410,867) $ (361,933) $ (382,587) $ (410,867)