v3.26.1
Components of Net Periodic Benefit Cost - Net Periodic Benefit Cost (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Pension benefits        
Pension Plans, Postretirement and Other Employee Benefits [Line Items]        
Service cost $ 0 $ 0 $ 0 $ 0
Interest cost 298 299 596 598
Expected return on plan assets (900) (825) (1,800) (1,650)
Amortization of the net loss (gain) 0 0 0 0
Net periodic (decrease) in benefit cost (602) (526) (1,204) (1,052)
Other post-retirement benefits        
Pension Plans, Postretirement and Other Employee Benefits [Line Items]        
Service cost 1 1 2 2
Interest cost 171 148 342 296
Expected return on plan assets 0 0 0 0
Amortization of the net loss (gain) (187) (459) (374) (918)
Net periodic (decrease) in benefit cost $ (15) $ (310) $ (30) $ (620)