Balance Sheet Components - Intangible Assets, Net (Details) - USD ($) $ in Thousands	Oct. 31, 2021	Jan. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 109,373	$ 106,580
Accumulated Amortization	(42,381)	(29,932)
Net Carrying Amount	66,992	76,648
Technology patents
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	19,125	19,125
Accumulated Amortization	(13,232)	(11,722)
Net Carrying Amount	5,893	7,403
Developed technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	80,166	77,373
Accumulated Amortization	(26,841)	(17,499)
Net Carrying Amount	53,325	59,874
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	6,459	6,459
Accumulated Amortization	(1,000)	(308)
Net Carrying Amount	5,459	6,151
Trade name
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Value	3,623	3,623
Accumulated Amortization	(1,308)	(403)
Net Carrying Amount	$ 2,315	$ 3,220