Commitments and Contingencies - Additional Information (Details)			12 Months Ended
	Sep. 15, 2014 USD ($) ft²	Jun. 29, 2012 USD ($) ft²	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
Commitments And Contingencies Disclosure [Line Items]
Purchase commitment cancellation notice period			30 days
Initial annual lease payments			$ 1,869,000
Deposits for letter of credit				$ 300,000
Rent expense net			1,300,000	1,400,000	$ 500,000
Contingent liability for accrual			0	$ 0
Facility Leases
Commitments And Contingencies Disclosure [Line Items]
Lease period	5 years	66 months
Area of leased property | ft²	34,400	12,000
Annual lease payments		$ 500,000
Sublease income			400,000
Sublease expense			$ 400,000
Additional period of extension in lease contract	3 years
Initial annual lease payments	$ 1,300,000
Increase in lease payments at final year of agreement	$ 1,600,000
Lease commencement period			2015-01
Lease abatement period	3 months