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Employee Benefit Plan	12 Months Ended
	Dec. 31, 2018
Retirement Benefits [Abstract]
Employee Benefit Plan	EMPLOYEE BENEFIT PLAN Defined Contribution Plan The Company sponsors a qualified defined contribution benefit plan (the “Plan”), covering substantially all of its U.S. employees. The Plan includes a savings plan feature under Section 401(k) of the Internal Revenue Code. The Company makes matching contributions to the plans equal to 100% of the first 3%, and up to 50% of the next 2% of salary contributed by an eligible employee. Participants are vested 100% in the Company’s matching contributions when made. Contributions made by the Company under the Plan were $5.4 million, $5.5 million and $5.8 million for the years ended December 31, 2018, 2017, and 2016, respectively.

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- References

No definition available.

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- Definition

The entire disclosure for pension and other postretirement benefits.

+ References

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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