v3.26.3
Accumulated Other Comprehensive Income (Loss) - Reclassifications out of Accumulated Other Comprehensive Income (Loss) (Details) - Reclassification Out of Accumulated Other Comprehensive Loss [Member] - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Amortization of pension and postretirement benefit items:        
Net income $ 529 $ 381 $ 1,586 $ 1,141
Amortization of Net Actuarial Gain [Member]        
Amortization of pension and postretirement benefit items:        
Salaries and employee benefits 718 517 2,152 1,551
Amortization of Prior Service Cost [Member]        
Amortization of pension and postretirement benefit items:        
Salaries and employee benefits (4) (2) (10) (9)
Amortization of Pension and Postretirement Benefit Items [Member]        
Amortization of pension and postretirement benefit items:        
Income tax benefit (185) (134) (556) (401)
Net income $ 529 $ 381 $ 1,586 $ 1,141