Balance Sheet Components - Schedule of Accounts Receivable, Net of Allowances (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Valuation And Qualifying Accounts Disclosure [Line Items]
Gross accounts receivable	$ 408,420		$ 360,194
Allowance for accounts receivable	(17,143)		(27,521)
Total Accounts Receivable—net of allowances	391,277		332,673
Allowance for Sales Returns
Valuation And Qualifying Accounts Disclosure [Line Items]
Allowance for accounts receivable	(4,323)	$ (5,412)	(6,550)
Allowance for Sales Incentives
Valuation And Qualifying Accounts Disclosure [Line Items]
Allowance for accounts receivable	(8,066)	(8,962)	(19,476)
Allowance for Doubtful Accounts
Valuation And Qualifying Accounts Disclosure [Line Items]
Allowance for accounts receivable	(4,524)	$ (4,403)	(1,140)
Other Allowances
Valuation And Qualifying Accounts Disclosure [Line Items]
Allowance for accounts receivable	$ (230)		$ (355)