Employee Benefit Plans	12 Months Ended
Dec. 31, 2020
Postemployment Benefits [Abstract]
Employee Benefit Plans	13. Employee Benefit Plans The Company sponsors a defined-contribution (cash balance) 401(k) plan covering domestic employees and a defined-contribution pension plan covering certain foreign employees. The Company generally makes contributions to the plans equal to each participant’s eligible contributions for the plan year up to a specified percentage of the participant’s annual compensation. Due to cost containment measures put in place in response to COVID-19, the Company suspended the employer match for U.S. employees starting July 1, 2020 through the end of the calendar year with the expectation that the match will resume when market conditions recover. The Company’s contribution expense under these plans was $2.5 million, $4.1 million and $4.1 million in 2020, 2019 and 2018, respectively.

The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans.

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-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/topic&trid=2228938

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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