Annual report pursuant to Section 13 and 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
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance $ 2,708,490 $ 2,513,102 $ 1,924,581
Other comprehensive income (loss) (52,380) 35,440 45,848
Ending balance 2,710,071 2,708,490 2,513,102
Unrealized Gains (Losses) on AFS Securities      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 74,161 37,877 (5,949)
Other comprehensive income (loss) before reclassification (51,329) 45,996 49,890
Amounts reclassified from AOCI into earnings (69) (9,712) (6,064)
Other comprehensive income (loss) (51,398) 36,284 43,826
Ending balance 22,763 74,161 37,877
Unrealized Gains (Losses) for AFS Securities Transferred to HTM      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 55 75 95
Other comprehensive income (loss) before reclassification 0 0 0
Amounts reclassified from AOCI into earnings (20) (20) (20)
Other comprehensive income (loss) (20) (20) (20)
Ending balance 35 55 75
Change in Fair Value of Cash Flow Hedge      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 0 (782) (3,393)
Other comprehensive income (loss) before reclassification (1,520) (699) (5,103)
Amounts reclassified from AOCI into earnings (47) 1,481 7,714
Other comprehensive income (loss) (1,567) 782 2,611
Ending balance (1,567) 0 (782)
Unrealized Gains (Losses) on BOLI      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance (3,201) (1,595) (1,026)
Other comprehensive income (loss) before reclassification 0 (2,098) (646)
Amounts reclassified from AOCI into earnings 605 492 77
Other comprehensive income (loss) 605 (1,606) (569)
Ending balance (2,596) (3,201) (1,595)
AOCI Attributable to Parent      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance 71,015 35,575 (10,273)
Other comprehensive income (loss) before reclassification (52,849) 43,199 44,141
Amounts reclassified from AOCI into earnings 469 (7,759) 1,707
Other comprehensive income (loss) (52,380) 35,440 45,848
Ending balance 18,635 71,015 35,575
Cumulative Effect, Period of Adoption, Adjustment      
AOCI Attributable to Parent, Net of Tax [Roll Forward]      
Beginning balance $ (39,053) (1,133)  
Ending balance   $ (39,053) $ (1,133)