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Pension and Postretirement Benefits - Components of Net Periodic Benefit Cost of Pension and Postretirement Benefit Plans (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Domestic Plans | Pension Plans        
Net periodic benefit cost:        
Service cost $ 0 $ 0 $ 0 $ 0
Interest cost 63 206 413 608
Expected return on plan assets 0 (7) (130) (121)
Amortization of prior service cost 0 (9) (441) (29)
Recognized net actuarial loss (gain) 148 91 6,181 249
Net periodic benefit cost (gain) 211 281 6,023 707
Domestic Plans | Postretirement Benefit Plans        
Net periodic benefit cost:        
Service cost 5 7 16 19
Interest cost 108 78 324 260
Expected return on plan assets 0 0 0 0
Amortization of prior service cost 8 18 25 56
Recognized net actuarial loss (gain) (40) (145) (120) (221)
Net periodic benefit cost (gain) 81 (42) 245 114
Foreign Pension Plans        
Net periodic benefit cost:        
Service cost 0 51 0 152
Interest cost 75 77 222 232
Expected return on plan assets (53) (79) (155) (238)
Amortization of prior service cost 10 0 31 0
Recognized net actuarial loss (gain) 7 24 19 71
Net periodic benefit cost (gain) $ 39 $ 73 $ 117 $ 217