Employee Retirement Benefit Plan	12 Months Ended
Dec. 31, 2018
Retirement Benefits [Abstract]
Employee Retirement Benefit Plan	EMPLOYEE RETIREMENT BENEFIT PLANWe maintain a 401(k) defined contribution retirement plan for our eligible U.S. employees. Costs charged to operations in connection with the 401(k) plan during 2018, 2017 and 2016 aggregated $2.1 million, $1.7 million, and $1.4 million, 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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