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Pensions and Other Postretirement Benefits (Components of Net Periodic Cost of Pension and Other Postretirement Benefit Plans) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Defined Benefit Plan Disclosure [Line Items] |  |  |
Net periodic benefit cost | $ 52 | $ 241 | $ 468
Pension Plans | United States |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Annual service cost | 0 | 0 | 0
Interest cost | 97 | 65 | 57
Expected return on plan assets | 0 | 0 | 0
Amortization of actuarial losses | 0 | 22 | 27
Amortization of prior service cost | 0 | 0 | 0
Amortization of transition obligation | 0 | 0 | 0
Curtailment and settlement losses | 0 | 0 | 0
Net periodic benefit cost | 97 | 87 | 84
Pension Plans | Foreign Plan |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Annual service cost | 265 | 308 | 379
Interest cost | 675 | 395 | 353
Expected return on plan assets | (879) | (454) | (393)
Amortization of actuarial losses | 39 | 736 | 459
Amortization of prior service cost | (10) | 0 | 0
Amortization of transition obligation | 0 | (40) | (8)
Curtailment and settlement losses | 50 | (512) | (108)
Net periodic benefit cost | 140 | 433 | 682
OPEB Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Annual service cost | 17 | 29 | 36
Interest cost | 111 | 67 | 68
Amortization of actuarial losses | (22) | 3 | 20
Net periodic benefit cost | $ 106 | $ 99 | $ 124

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- Definition Amount of prior service cost (credit) 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)(5) -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)(5) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480506/715-20-50-6 + Details
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