Employee Benefit Plan - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Compensation And Retirement Disclosure [Abstract]
Minimum period following date of hire after which employees become eligible to participate in the Plan	3 months
Employee contribution match in plan (as a percent)	6.00%
Expenses recorded in benefit contributions to the Plan	$ 1.5	$ 1.7	$ 1.0