Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Balance Sheet Components [Abstract]
Accrued payroll related costs	$ 52,854	$ 39,479
Accrued warranty costs	6,744	4,718	$ 3,204
Accrued manufacturing costs	14,824	6,397
Accrued professional fees	6,829	4,875
Accrued taxes	1,098	1,347
Other	8,602	4,155
Total accrued liabilities	$ 90,951	$ 60,971