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Pension Plans and Other Postretirement Benefits - Reconciliation of Benefit Obligations, Plan Assets and Funded Status of Plans, as well as Summary of Significant Assumptions for Benefit Plans (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Pension Plans |  |  |
Change in plan assets: |  |  |
Fair value of plan assets, beginning balance | $ 549,645 |  |
Fair value of plan assets, Ending Balance | 539,712 | $ 549,645 |
Other Postretirement Benefits |  |  |
Change in benefit obligations: |  |  |
Benefit obligation, beginning balance | 28,889 | 35,990 |
Service cost | 46 | 47 | $ 85
Interest cost | 1,441 | 1,873 | 1,307
Actuarial (gain) loss | 6,072 | (6,618) |
Benefits paid | (1,970) | (2,403) |
Benefit obligation, ending balance | 34,478 | 28,889 | 35,990
Change in plan assets: |  |  |
Fair value of plan assets, beginning balance | 0 | 0 |
Employer contributions | 1,970 | 2,403 |
Benefits paid | (1,970) | (2,403) |
Fair value of plan assets, Ending Balance | 0 | 0 | 0
Funded status | (34,478) | (28,889) |
Current liabilities (accrued expenses) | (2,548) | (2,642) |
Noncurrent liabilities (pension benefits) | (31,930) | (26,247) |
Net pension liability | $ (34,478) | $ (28,889) |
Weighted-average assumptions used to determine benefit obligations at December 31: |  |  |
Discount rate | 5.67% | 5.21% |
Rate of compensation increase | 3.50% | 0.00% |
U.S. Plans | Pension Plans |  |  |
Change in benefit obligations: |  |  |
Benefit obligation, beginning balance | $ 512,902 | $ 514,971 |
Service cost | 545 | 499 | 904
Interest cost | 25,580 | 26,924 | 18,827
Actuarial (gain) loss | (11,604) | 11,957 |
Benefits paid | (42,355) | (41,449) |
Employee contributions | 0 | 0 |
Foreign exchange (gain) loss | 0 | 0 |
Settlements/curtailments | 0 | 0 |
Other | 0 | 0 |
Benefit obligation, ending balance | 485,068 | 512,902 | 514,971
Change in plan assets: |  |  |
Fair value of plan assets, beginning balance | 484,131 | 469,828 |
Actual return on plan assets | 33,707 | 54,785 |
Employer contributions | 1,911 | 967 |
Benefits paid | (42,355) | (41,449) |
Employee contributions | 0 | 0 |
Foreign exchange (loss) gain | 0 | 0 |
Settlements/curtailments | 0 | 0 |
Other | 0 | 0 |
Fair value of plan assets, Ending Balance | 477,394 | 484,131 | $ 469,828
Funded status | (7,674) | (28,771) |
Current liabilities (accrued expenses) | (928) | (912) |
Noncurrent liabilities (pension benefits) | (6,746) | (27,859) |
Net pension liability | (7,674) | (28,771) |
Prior service benefit | 0 | 0 |
Net amount recognized | $ 0 | $ 0 |
Weighted-average assumptions used to determine benefit obligations at December 31: |  |  |
Discount rate | 5.65% | 5.21% | 5.46%
Rate of compensation increase | 0.00% | 0.00% |
Foreign Plans | Pension Plans |  |  |
Change in benefit obligations: |  |  |
Benefit obligation, beginning balance | $ 195,918 | $ 180,561 |
Service cost | 5,391 | 5,686 | $ 3,700
Interest cost | 7,204 | 7,153 | 3,363
Actuarial (gain) loss | (7,034) | 10,078 |
Benefits paid | (9,423) | (9,051) |
Employee contributions | 70 | 60 |
Foreign exchange (gain) loss | (7,920) | 7,137 |
Settlements/curtailments | (6,197) | (5,606) |
Other | (56) | (100) |
Benefit obligation, ending balance | 177,953 | 195,918 | 180,561
Change in plan assets: |  |  |
Fair value of plan assets, beginning balance | 65,514 | 58,229 |
Actual return on plan assets | (1,317) | 4,395 |
Employer contributions | 15,498 | 14,496 |
Benefits paid | (9,423) | (9,051) |
Employee contributions | 70 | 60 |
Foreign exchange (loss) gain | (1,771) | 3,091 |
Settlements/curtailments | (6,197) | (5,606) |
Other | (56) | (100) |
Fair value of plan assets, Ending Balance | 62,318 | 65,514 | $ 58,229
Funded status | (115,635) | (130,404) |
Current liabilities (accrued expenses) | (6,189) | (7,951) |
Noncurrent liabilities (pension benefits) | (109,446) | (122,453) |
Net pension liability | (115,635) | (130,404) |
Prior service benefit | (441) | (531) |
Net amount recognized | $ (441) | $ (531) |
Weighted-average assumptions used to determine benefit obligations at December 31: |  |  |
Discount rate | 4.04% | 3.73% | 4.04%
Rate of compensation increase | 3.65% | 3.67% |

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- Definition Amount, before tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-14A Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (j) -SubTopic 10 -Topic 220 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (k) -SubTopic 10 -Topic 220 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 10A -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 715 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (j) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480506/715-20-50-1 + Details
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