Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
Balance Sheet Components [Abstract]
Accrued payroll related costs	$ 30,878	$ 39,479
Accrued warranty costs	4,841	4,718	$ 3,972	$ 3,204
Accrued manufacturing costs	6,920	6,397
Accrued professional fees	5,718	4,875
Accrued taxes	1,257	1,347
Other	5,496	4,155
Total accrued liabilities	$ 55,110	$ 60,971