Balance Sheet Components - Other Accured Liabilities (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended
	Apr. 30, 2016	Sep. 30, 2016	Sep. 30, 2016	Dec. 31, 2015
Balance Sheet Components
Accrued expenses		$ 22,959	$ 22,959	$ 17,870
Accrued rent		33	33	450
Deferred lease obligation				42
Sales and use tax payable		355	355	346
Total other accrued liabilities		23,347	$ 23,347	$ 18,708
Agreement term	4 years		4 years
Accrued insurance liability	$ 3,200
Deferred cost		2,800	$ 2,800
Deferred cost amortization		$ 200	$ 400