v3.26.1
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) (Changes in AOCI) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Changes in each component of AOCI, net of tax        
Beginning balance $ 593,879 $ 557,376 $ 592,581 $ 538,385
Other comprehensive loss (607) 1,907 (1,088) 12,764
Ending balance 596,331 568,874 596,331 568,874
Investment Securities        
Changes in each component of AOCI, net of tax        
Beginning balance (91,669) (109,093) (90,894) (121,491)
Other comprehensive (loss) income before reclassifications (2,381) 1,728 (4,299) 12,983
Reclassification adjustments from AOCI 1,241 1,305 2,384 2,448
Other comprehensive loss (1,140) 3,033 (1,915) 15,431
Ending balance (92,809) (106,060) (92,809) (106,060)
Derivatives        
Changes in each component of AOCI, net of tax        
Beginning balance 3,533 4,953 3,240 6,494
Other comprehensive (loss) income before reclassifications 533 (1,126) 826 2,667
Reclassification adjustments from AOCI 0 0 0 0
Other comprehensive loss 533 (1,126) 826 (2,667)
Ending balance 4,066 3,827 4,066 3,827
SERP        
Changes in each component of AOCI, net of tax        
Beginning balance 387 575 386 575
Other comprehensive (loss) income before reclassifications 0 0 0 0
Reclassification adjustments from AOCI 0 0 1 0
Other comprehensive loss 0 0 1 0
Ending balance 387 575 387 575
Accum. Other Comp. Loss        
Changes in each component of AOCI, net of tax        
Beginning balance (87,749) (103,565) (87,268) (114,422)
Other comprehensive (loss) income before reclassifications (1,848) 602 (3,473) 10,316
Reclassification adjustments from AOCI 1,241 1,305 2,385 2,448
Other comprehensive loss (607) 1,907 (1,088) 12,764
Ending balance $ (88,356) $ (101,658) $ (88,356) $ (101,658)