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Benefit Plans - Change in Benefit Obligation and Plan Assets (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 USD ($) plan | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($)
Defined Benefit Plan, Change in Fair Value of Plan Assets |  |  |
Number Of Defined Benefit Pension Plans | plan | 2 |  |
Defined Benefit Pension Plans |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets |  |  |
Fair value of plan assets at beginning of period | $ 102,605 |  |
Fair value of plan assets at end of the period | 82,914 | $ 102,605 |
Defined Benefit Pension Plans | United States |  |  |
Defined Benefit Plan, Change in Benefit Obligation |  |  |
Benefit obligation at beginning of period | 91,937 | 82,726 |
Service cost | 0 | 769 | $ 978
Interest cost | 2,210 | 2,665 | 3,099
Participant contributions | 0 | 0 |
Plan curtailments | 0 | 0 |
Plan settlements | (1,795) | (1,455) |
Benefits paid | (2,069) | (1,511) |
Expenses paid | 0 | 0 |
Actuarial (gains) losses | (3,818) | 8,743 |
Translation adjustment | 0 | 0 |
Benefit obligation at end of the period | 86,465 | 91,937 | 82,726
Changes in actuarial (gains) losses due to discount rates | (3,989) | 8,938 |
Changes in actuarial (gains) losses due to demographic experience | (545) | 343 |
Changes in actuarial (gains) losses due to mortality assumptions | 204 | (538) |
Actuarial Gain (Loss), General Experience | 512 |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets |  |  |
Fair value of plan assets at beginning of period | 80,395 | 69,450 |
Actual return on plan assets | 6,383 | 11,539 |
Employer contributions | 0 | 2,372 |
Employee contributions | 0 | 0 |
Plan settlements | (1,795) | (1,455) |
Benefits paid | (2,069) | (1,511) |
Expenses paid | 0 | 0 |
Translation adjustment | 0 | 0 |
Fair value of plan assets at end of the period | 82,914 | 80,395 | 69,450
Funded status of the plans (underfunded) | (3,551) | (11,542) |
Defined Benefit Plan, Accumulated Benefit Obligation | 86,465 | 91,937 |
Defined Benefit Pension Plans | Foreign |  |  |
Defined Benefit Plan, Change in Benefit Obligation |  |  |
Benefit obligation at beginning of period | 22,210 | 19,673 |
Service cost | 0 | 1,080 | 977
Interest cost | 255 | 299 | 355
Participant contributions | 0 | 112 |
Plan curtailments | 0 | (1,603) |
Plan settlements | (21,622) | 0 |
Benefits paid | 0 | (213) |
Expenses paid | 0 | (60) |
Actuarial (gains) losses | 0 | 949 |
Translation adjustment | (843) | 1,973 |
Benefit obligation at end of the period | 0 | 22,210 | 19,673
Defined Benefit Plan, Change in Fair Value of Plan Assets |  |  |
Fair value of plan assets at beginning of period | 22,210 | 18,365 |
Actual return on plan assets | 255 | 1,238 |
Employer contributions | 0 | 820 |
Employee contributions | 0 | 112 |
Plan settlements | (21,622) | 0 |
Benefits paid | 0 | (213) |
Expenses paid | 0 | (60) |
Translation adjustment | (843) | 1,948 |
Fair value of plan assets at end of the period | 0 | 22,210 | 18,365
Funded status of the plans (underfunded) | 0 | 0 |
Underfunded and Unfunded Plans |  |  |
Defined Benefit Plan, Change in Fair Value of Plan Assets |  |  |
Funded status of the plans (underfunded) | 3,551 | 11,542 |
Other Postretirement Benefits Plans |  |  |
Defined Benefit Plan, Change in Benefit Obligation |  |  |
Benefit obligation at beginning of period | 650 | 554 |
Service cost | 0 | 0 | 10
Interest cost | 17 | 19 | 29
Benefits paid | (1) | (2) |
Premiums paid | 2 | 3 |
Actuarial (gains) losses | (40) | 82 |
Benefit obligation at end of the period | 624 | 650 | $ 554
Changes in actuarial (gains) losses due to discount rates | (27) | 83 |
Changes in actuarial (gains) losses due to demographic experience | (12) | (4) |
Changes in actuarial (gains) losses due to mortality assumptions | (1) | 3 |
Defined Benefit Plan, Change in Fair Value of Plan Assets |  |  |
Fair value of plan assets at beginning of period | 0 |  |
Employer contributions | 3 | 5 |
Benefits paid | (1) | (2) |
Premiums paid | 2 | 3 |
Fair value of plan assets at end of the period | 0 | 0 |
Funded status of the plans (underfunded) | $ (624) | $ (650) |

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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 + Details
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- Definition Amount of payment, which decreases plan assets of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(8) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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- Details
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