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401(k) plan	12 Months Ended
	Dec. 31, 2015
401(k) plan
401(k) plan	15. 401(k) plan         The Company maintains a 401(k) plan for its employees. Employee contributions are voluntary. The Company may match employee contributions in amounts to be determined at the Company's sole discretion. The Company provides a 50% matching contribution for up to the first 6% of each contributing employee's base salary contributions. The Company made matching contributions to the 401(k) plan and recorded expense of approximately $0.7 million, $0.3 million and $0.1 million for the years ended December 31, 2015, 2014 and 2013, respectively.

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- Definition

The entire disclosure of an entity's employee compensation and benefit plans, excluding share-based compensation and including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, life insurance, severance, health care, unemployment and other benefit plans.

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- References

No definition available.

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