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Defined Contribution Benefit Plan
12 Months Ended
Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]  
Defined Contribution Benefit Plan

14. Defined Contribution Benefit Plan

        The Company sponsors a 401(k) retirement plan, in which substantially all of its full-time employees are eligible to participate. Participants may contribute a percentage of their annual compensation to this plan, subject to statutory limitations. The Company did not provide any contributions to this plan during the years ended December 31, 2015, 2014, or 2013.