Financial Statements Details - Accrued Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2016
Balance Sheet Components [Abstract]
Accrued payroll related costs	$ 40,896	$ 56,626
Accrued manufacturing costs	21,663	35,703
Accrued product development costs	4,362	21,201
Accrued warranty costs	8,182	7,415	$ 8,262	$ 6,744
Accrued professional fees	6,267	7,086
Accrued taxes	717	794
Other	4,606	5,002
Total accrued liabilities	$ 86,693	$ 133,827