Defined Benefit Pension Plans - Schedule of Amounts Recognized in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Retirement Benefits [Abstract]
Plan assets in other long-term assets	$ 0	$ 44
Current portion of pension benefit obligation in wages and benefits payable	3,069	2,885
Long-term portion of pension benefit obligation	119,457	98,712
Pension benefit obligation, net	$ 122,526	$ 101,553

Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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Name:	us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant