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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%

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 17 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-17 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 3A -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480535/715-20-45-3A Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480482/715-20-55-18 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (h)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (a)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-6 + Details
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