Employee Benefit Plans	12 Months Ended
Dec. 31, 2018
Compensation And Retirement Disclosure [Abstract]
Employee Benefit Plans	15. Employee Benefit Plans The Company administers a 401(k) savings retirement plan for its employees. The Company contributed $1.0 million for the year ended December 31, 2018, and $0.4 million for the years ended December 31, 2017 and 2016, respectively.

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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