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, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance $ 2,498,335 $ 2,710,071 $ 2,709,732 $ 2,708,490 $ 2,710,071 $ 2,708,490
Other comprehensive (loss) income (124,800) (210,118) 16,571 (34,514) (334,918) (17,943)
Ending balance 2,391,476 2,498,335 2,747,597 2,709,732 2,391,476 2,747,597
Unrealized Gains (Losses) on AFS Securities            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance (164,204) 22,763 40,974 74,161 22,763 74,161
Other comprehensive income (loss) before reclassification (113,374)   13,818   (300,341) (19,307)
Amounts reclassified from AOCI into earnings 1   0   1 (62)
Other comprehensive (loss) income (113,373)   13,818   (300,340) (19,369)
Ending balance (277,577) (164,204) 54,792 40,974 (277,577) 54,792
Unrealized Gains (Losses) for AFS Securities Transferred to HTM            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance 30 35 50 55 35 55
Other comprehensive income (loss) before reclassification 0   0   0 0
Amounts reclassified from AOCI into earnings (5)   (5)   (10) (10)
Other comprehensive (loss) income (5)   (5)   (10) (10)
Ending balance 25 30 45 50 25 45
Change in Fair Value of Cash Flow Hedge            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance (24,880) (1,567) (1,475) 0 (1,567) 0
Other comprehensive income (loss) before reclassification (11,572)   2,607   (34,885) 1,179
Amounts reclassified from AOCI into earnings 0   0   0 (47)
Other comprehensive (loss) income (11,572)   2,607   (34,885) 1,132
Ending balance (36,452) (24,880) 1,132 (1,475) (36,452) 1,132
Unrealized Gains (Losses) on BOLI            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance (2,429) (2,596) (3,048) (3,201) (2,596) (3,201)
Other comprehensive income (loss) before reclassification 0   0   0 0
Amounts reclassified from AOCI into earnings 150   151   317 304
Other comprehensive (loss) income 150   151   317 304
Ending balance (2,279) (2,429) (2,897) (3,048) (2,279) (2,897)
AOCI Attributable to Parent            
AOCI Attributable to Parent, Net of Tax [Roll Forward]            
Beginning balance (191,483) 18,635 36,501 71,015 18,635 71,015
Other comprehensive income (loss) before reclassification (124,946)   16,425   (335,226) (18,128)
Amounts reclassified from AOCI into earnings 146   146   308 185
Other comprehensive (loss) income (124,800) (210,118) 16,571 (34,514) (334,918) (17,943)
Ending balance $ (316,283) $ (191,483) $ 53,072 $ 36,501 $ (316,283) $ 53,072