Balance Sheet Components - Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Product warranty	$ 71,975	$ 87,882
Accrued revenue reserve from returns	82,612	0
Accrued manufacturing expense and freight	31,962	41,901
Accrued sales incentives	71,175	111,592
Accrued sales and marketing	21,741	44,401
Accrued research and development	5,276	8,983
Accrued co-op advertising and marketing development funds	21,688	30,408
Employee-related liabilities	18,204	33,266
Sales taxes and VAT payable	22,447	21,340
Inventory received but not billed	8,935	10,526
Accrued legal settlements and fees	8,365	36,693
Derivative liabilities	430	2,138
Other	17,574	23,007
Accrued liabilities	$ 382,384	$ 452,137