v3.25.2
Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Changes in accumulated other comprehensive (loss) income by component, net of tax        
Beginning balance $ 1,240,182 $ 1,194,231 $ 1,221,939 $ 1,198,644
Other comprehensive income (loss) 2,214 (1,669) 9,993 (10,527)
Reclassification adjustment for (income) expense recognized in earnings 906 817 3,511 1,632
Ending balance 1,254,171 1,198,480 1,254,171 1,198,480
Accumulated Other Comprehensive Income (Loss)        
Changes in accumulated other comprehensive (loss) income by component, net of tax        
Beginning balance (42,498) (60,841) (52,882) (52,798)
Ending balance (39,378) (61,693) (39,378) (61,693)
Investment Securities Available-for-Sale        
Changes in accumulated other comprehensive (loss) income by component, net of tax        
Beginning balance (43,981) (58,823) (53,718) (52,546)
Other comprehensive income (loss) 4,327 (910) 14,064 (7,187)
Reclassification adjustment for (income) expense recognized in earnings 0 0 0 0
Ending balance (39,654) (59,733) (39,654) (59,733)
Net Change in Fair Value of Cash Flow Hedges        
Changes in accumulated other comprehensive (loss) income by component, net of tax        
Beginning balance (676) (3,347) (1,323) (1,581)
Other comprehensive income (loss) (157) (759) (2,115) (3,340)
Reclassification adjustment for (income) expense recognized in earnings 397 817 3,002 1,632
Ending balance (436) (3,289) (436) (3,289)
Postretirement Benefits        
Changes in accumulated other comprehensive (loss) income by component, net of tax        
Beginning balance 2,159 1,329 2,159 1,329
Other comprehensive income (loss) (1,956) 0 (1,956) 0
Reclassification adjustment for (income) expense recognized in earnings 509 0 509 0
Ending balance $ 712 $ 1,329 $ 712 $ 1,329