Balance Sheet Components - Schedule of Accounts Receivable (Details) - USD ($) $ in Thousands	Jul. 31, 2021	Jan. 31, 2021	Jul. 31, 2020	Jan. 31, 2020
Property, Plant and Equipment [Abstract]
Accounts receivable, gross	$ 429,895	$ 331,547
Less: allowance for credit losses	(17,500)	(20,500)	$ (17,500)	$ (5,150)
Less: allowance for returns	(17,129)	(16,344)
Accounts Receivable, after Allowance for Credit Loss, Total	$ 395,266	$ 294,703