v3.26.1
Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income, Changes In (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
AOCI Attributable to Parent, Net of Tax        
Beginning balance, net of tax $ 854,862 $ 816,623 $ 847,615 $ 811,942
Income tax (expense) benefit (2,805) 2,570 (943) 4,409
Ending balance, net of tax 882,464 807,200 882,464 807,200
Unrealized Gains (Losses) on Securities        
AOCI Attributable to Parent, Net of Tax        
Beginning balance, net of tax (85,971) (115,078) (76,311) (112,199)
Other comprehensive (loss) income before reclassifications 7,952 (12,618) (6,380) (18,831)
Reclassification adjustments included in net income 2,238 2,019 4,342 4,587
Income tax (expense) benefit (2,140) 2,226 428 2,992
Net current-period other comprehensive income (loss), net of tax 8,050 (8,373) (1,610) (11,252)
Ending balance, net of tax (77,921) (123,451) (77,921) (123,451)
Unrealized Gains (Losses) on Derivatives        
AOCI Attributable to Parent, Net of Tax        
Beginning balance, net of tax 344 1,781 (1,784) 6,303
Other comprehensive (loss) income before reclassifications 2,467 (392) 5,707 (3,543)
Reclassification adjustments included in net income 35 (1,866) (511) (4,439)
Income tax (expense) benefit (525) 474 (1,091) 1,676
Net current-period other comprehensive income (loss), net of tax 1,977 (1,784) 4,105 (6,306)
Ending balance, net of tax 2,321 (3) 2,321 (3)
Retirement Plans        
AOCI Attributable to Parent, Net of Tax        
Beginning balance, net of tax (16,995) (18,517) (17,522) (19,002)
Other comprehensive (loss) income before reclassifications 0 0 0 0
Reclassification adjustments included in net income 668 616 1,335 1,230
Income tax (expense) benefit (140) (130) (280) (259)
Net current-period other comprehensive income (loss), net of tax 528 486 1,055 971
Ending balance, net of tax (16,467) (18,031) (16,467) (18,031)
Total        
AOCI Attributable to Parent, Net of Tax        
Beginning balance, net of tax (102,622) (131,814) (95,617) (124,898)
Other comprehensive (loss) income before reclassifications 10,419 (13,010) (673) (22,374)
Reclassification adjustments included in net income 2,941 769 5,166 1,378
Income tax (expense) benefit (2,805) 2,570 (943) 4,409
Net current-period other comprehensive income (loss), net of tax 10,555 (9,671) 3,550 (16,587)
Ending balance, net of tax $ (92,067) $ (141,485) $ (92,067) $ (141,485)