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Pension, Postretirement, and Other Benefit Plans (Schedule of Net Periodic Benefit Plan Cost) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Pension plans      
Components of net periodic benefit cost:      
Service cost $ 1,812 $ 1,478 $ 1,371
Interest cost 6,114 5,151 4,917
Expected return on assets (5,430) (4,347) (5,979)
Amortization of prior service cost/(credit) (26) (32) (8)
Amortization of net actuarial loss 647 555 1,377
Settlement (33) 0 49,128
Curtailment (gain)/loss (37) 0 0
Net periodic benefit cost $ 3,047 $ 2,805 $ 50,806
Pension plans | United States      
Weighted average assumptions used to determine net cost:      
Discount rate 5.15% 5.49% 2.63%
Expected return on plan assets     3.07%
Pension plans | Foreign Plan      
Weighted average assumptions used to determine net cost:      
Discount rate 4.05% 5.15% 2.41%
Expected return on plan assets 4.98% 5.21% 3.31%
Rate of compensation increase 2.89% 3.08% 2.70%
Pension plans | Switzerland      
Weighted average assumptions used to determine net cost:      
Cash balance interest crediting rate 1.30% 2.15% 0.25%
Other postretirement benefits      
Components of net periodic benefit cost:      
Service cost $ 46 $ 60 $ 114
Interest cost 1,416 1,874 1,221
Expected return on assets 0 0 0
Amortization of prior service cost/(credit) (124) (4,090) (4,488)
Amortization of net actuarial loss (34) 828 1,883
Settlement 0 0 0
Curtailment (gain)/loss 0 0 0
Net periodic benefit cost $ 1,304 $ (1,328) $ (1,270)
Other postretirement benefits | United States      
Weighted average assumptions used to determine net cost:      
Discount rate 5.21% 5.55% 2.83%
Other postretirement benefits | Foreign Plan      
Weighted average assumptions used to determine net cost:      
Discount rate 4.70% 5.20% 3.05%
Rate of compensation increase 2.75% 2.75% 2.75%
Other postretirement benefits | Switzerland      
Weighted average assumptions used to determine net cost:      
Cash balance interest crediting rate 0.00% 0.00% 0.00%