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Defined Contribution Plan	12 Months Ended
Defined Contribution Plan	Dec. 31, 2015
Compensation And Retirement Disclosure [Abstract]
Defined Contribution Plan	20. Defined Contribution Plan In January 2007, the Company established a 401(k) plan, or the Retirement Plan, available to employees who meet the Retirement Plan’s eligibility requirements. Participants may elect to contribute a percentage of their compensation to the Retirement Plan, up to a statutory limit. Participants are fully vested in their contributions. The Company may make discretionary contributions to the Retirement Plan as a percentage of participant contributions, subject to established limits. The Company did not make any contributions to the Retirement Plan during the years ended December 31, 2015, 2014 and 2013.