v3.26.3
Components of Net Periodic Benefit Cost - Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Pension benefits        
Pension Plans, Postretirement and Other Employee Benefits [Line Items]        
Service cost $ 0 $ 0 $ 0 $ 0
Interest cost 298 299 894 897
Expected return on plan assets (900) (825) (2,700) (2,475)
Amortization of the net loss (gain) 0 0 0 0
Net periodic (decrease) in benefit cost (602) (526) (1,806) (1,578)
Other post-retirement benefits        
Pension Plans, Postretirement and Other Employee Benefits [Line Items]        
Service cost 1 1 3 3
Interest cost 171 148 513 444
Expected return on plan assets 0 0 0 0
Amortization of the net loss (gain) (187) (459) (561) (1,377)
Net periodic (decrease) in benefit cost $ (15) $ (310) $ (45) $ (930)