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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
Mar. 31, 2025
Mar. 31, 2024
Domestic Plans | Pension Plans    
Net periodic benefit cost:    
Service cost $ 0 $ 0
Interest cost 208 201
Expected return on plan assets (63) (57)
Amortization of prior service credit (10) (10)
Recognized net actuarial loss (gain) 63 79
Net periodic benefit cost 198 213
Total expenses (income) 198 213
Domestic Plans | Postretirement Benefit Plans    
Net periodic benefit cost:    
Service cost 5 6
Interest cost 109 91
Expected return on plan assets 0 0
Amortization of prior service credit 8 19
Recognized net actuarial loss (gain) (24) (38)
Net periodic benefit cost 98 78
Total expenses (income) 98 78
Foreign Pension Plans    
Net periodic benefit cost:    
Service cost 0 51
Interest cost 72 78
Expected return on plan assets (50) (80)
Amortization of prior service credit 10 0
Recognized net actuarial loss (gain) 7 24
Net periodic benefit cost 39 73
Total expenses (income) $ 39 $ 73