Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015	Dec. 31, 2014
Balance Sheet Components [Abstract]
Accrued compensation costs	$ 41,695	$ 39,479
Accrued warranty costs	5,597	4,718	$ 4,791	$ 3,204
Accrued manufacturing costs	14,558	6,397
Accrued professional fees	6,827	4,875
Accrued taxes	1,320	1,347
Other	7,166	4,155
Total accrued liabilities	$ 77,163	$ 60,971