Balance Sheet Components - Other Current Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Payables And Accruals [Abstract]
Distribution fees	$ 7,659	$ 5,805
Marketing expenses	2,635	3,415
Contingent consideration	2,532	1,048
Accrued property and equipment	1,172	687
Legal and professional fees	984	1,699
Deferred rent	268	536
Other	2,529	2,600
Other current liabilities	$ 17,779	$ 15,790