XML 77 R66.htm IDEA: XBRL DOCUMENT v3.25.3
Pension and Other Postretirement Benefits Plans - The Components of the Net Pension (Benefit) Expense (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Employee Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Interest cost $ 203 $ 193 $ 610 $ 581
Expected return on plan assets (277) (284) (831) (852)
Net postretirement benefit expense (74) (91) (221) (271)
Outside Director Pension Plan        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 2 2 6 6
Interest cost 12 11 36 33
Amortization of unrecognized gain (25) (38) (75) (114)
Net postretirement benefit expense (11) (25) (33) (75)
Other Postretirement Benefit Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 38 41 114 125
Interest cost 115 96 345 288
Amortization of unrecognized gain (48) (54) (144) (162)
Net postretirement benefit expense $ 105 $ 83 $ 315 $ 251