v3.26.1
Pension and Postretirement Benefits - Composition of Net Periodic Pension Plan and Postretirement Plan Costs (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Pension Benefits [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost $ 0 $ 0 $ 0 $ 0
Interest cost 141 144 282 288
Expected return on plan assets (274) (256) (548) (512)
Amortization of prior service credits 0 0 0 0
Amortization of net losses (gains) 0 36 0 71
Net periodic benefit plan (benefit) cost (133) (76) (266) (153)
Postretirement Benefits [Member]        
Defined Benefit Plan Disclosure [Line Items]        
Service cost 0 0 0 0
Interest cost 2 2 4 4
Expected return on plan assets 0 0 0 0
Amortization of prior service credits (1) (2) (2) (3)
Amortization of net losses (gains) 0 0 0 (1)
Net periodic benefit plan (benefit) cost $ 1 $ 0 $ 2 $ 0