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
Mar. 31, 2023
Mar. 31, 2022
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance $ 2,372,737 $ 2,710,071
Other comprehensive income (loss) 56,353 (210,118)
Ending balance 2,440,236 2,498,335
Unrealized Gains (Losses) on AFS Securities    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (363,919) 22,763
Other comprehensive loss before reclassification 32,068 (186,967)
Amounts reclassified from AOCI into earnings 10,586 0
Other comprehensive income (loss) 42,654 (186,967)
Ending balance (321,265) (164,204)
Unrealized Gains (Losses) for AFS Securities Transferred to HTM    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance 17 35
Other comprehensive loss before reclassification 0 0
Amounts reclassified from AOCI into earnings (3) (5)
Other comprehensive income (loss) (3) (5)
Ending balance 14 30
Change in Fair Value of Cash Flow Hedge    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (54,610) (1,567)
Other comprehensive loss before reclassification 13,714 (23,313)
Amounts reclassified from AOCI into earnings 0 0
Other comprehensive income (loss) 13,714 (23,313)
Ending balance (40,896) (24,880)
Unrealized Gains (Losses) on BOLI    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance 226 (2,596)
Other comprehensive loss before reclassification 10 0
Amounts reclassified from AOCI into earnings (22) 167
Other comprehensive income (loss) (12) 167
Ending balance 214 (2,429)
AOCI Attributable to Parent    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Beginning balance (418,286) 18,635
Other comprehensive loss before reclassification 45,792 (210,280)
Amounts reclassified from AOCI into earnings 10,561 162
Other comprehensive income (loss) 56,353 (210,118)
Ending balance $ (361,933) $ (191,483)