Balance Sheet Components - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands	Apr. 30, 2021	Jan. 31, 2021	Apr. 30, 2020	Jan. 31, 2020
Property, Plant and Equipment [Abstract]
Accounts receivable, gross	$ 400,010	$ 331,547
Less: Allowance for credit losses	(18,000)	(20,500)	$ (8,300)	$ (5,150)
Less: Allowance for returns	(15,664)	(16,344)
Accounts Receivable, after Allowance for Credit Loss, Total	$ 366,346	$ 294,703