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ACCUMULATED OTHER COMPREHENSIVE LOSS (Changes in Other Comprehensive Income by Components) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period     $ 1,254,371  
Balance at end of period $ 1,375,417 $ 1,318,132 1,375,417 $ 1,318,132
Accumulated other comprehensive loss        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period (48,782) (86,494) (89,839) (67,013)
Balance at end of period (27,301) (32,990) (27,301) (32,990)
Net unrealized loss on securities available-for-sale        
AOCI Attributable to Parent, Net of Tax [Roll Forward]        
Balance at beginning of period (48,782) (86,494) (89,839) (67,013)
Other comprehensive (loss) income before reclassifications 21,479 53,502 62,532 34,024
Amounts reclassified out of accumulated other comprehensive loss 2 2 6 (1)
Other comprehensive income (loss) 21,481 53,504 62,538 34,023
Balance at end of period $ (27,301) $ (32,990) $ (27,301) $ (32,990)