Employee Benefits	12 Months Ended
Dec. 31, 2019
Compensation And Retirement Disclosure [Abstract]
Employee Benefits	15. Employee Benefits The Company maintains a 401(k) plan for all eligible employees. The Company’s operating results include expenses of approximately $13.2 million in 2019, $14.3 million in 2018 and $8.7 million in 2017 for the Company’s contributions to the plan.

The entire disclosure for pension and other postretirement benefits.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

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