v3.26.1
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
Mar. 31, 2026
Mar. 31, 2025
Amortization of pension and postretirement benefit items:    
Net income $ 517 $ 219
Amortization of Net Actuarial Gain [Member]    
Amortization of pension and postretirement benefit items:    
Salaries and employee benefits 701 297
Amortization of Prior Service Cost [Member]    
Amortization of pension and postretirement benefit items:    
Salaries and employee benefits (3) (3)
Amortization of Pension and Postretirement Benefit Items [Member]    
Amortization of pension and postretirement benefit items:    
Income tax benefit (181) (75)
Net income $ 517 $ 219