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Employee Benefit Plan	12 Months Ended
Employee Benefit Plan	Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract]
Employee Benefit Plan	10. Employee Benefit Plan We have a defined contribution plan under Section 401(k) of the Internal Revenue Code (“401(k) Plan”) covering all full-time employees who meet certain eligibility requirements. Eligible employees may defer up to 90% of their pre-tax eligible compensation, up to the annual maximum allowed by the Internal Revenue Service. Under the 401(k) Plan, we may, but are not obligated to, match a portion of the employee contributions up to a defined maximum. We made matching contributions of $1.1 million, $1.7 million and $2.0 million for the years ended December 31, 2015, 2014 and 2013, respectively.