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Employee Benefit Plan	12 Months Ended
	Dec. 31, 2017
Retirement Benefits [Abstract]
Employee Benefit Plan	Employee Benefit Plan The Company maintains a 401(k) Profit Sharing Plan & Trust (the “401(k) Plan”) for its employees in the United States. The 401(k) Plan allows employees of the Company to contribute up to 80% of their eligible compensation, subject to certain limitations. Since 2006, the Company matches employee contributions up to $1,500 per year. Employee contributions are fully vested upon contribution, whereas the Company’s matching contributions are fully vested after the first year of service. The Company also has various defined contribution plans for its international employees. The Company’s contributions to these benefit plans were approximately $2.0 million, $1.9 million and $2.1 million for the years ended December 31, 2017, 2016 and 2015, 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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-URI http://asc.fasb.org/topic&trid=2235017

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