Balance Sheet Components - Intangible Assets, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Feb. 02, 2020	Jan. 31, 2019
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 106,580	$ 75,225
Accumulated Amortization	(29,932)	(16,968)
Net Carrying Amount	76,648	58,257
Intangible assets amortization expense	13,000	9,300	$ 2,600
Technology patents
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	19,125	19,125
Accumulated Amortization	(11,722)	(8,933)
Net Carrying Amount	$ 7,403	10,192
Weighted average remaining useful life	2 years 8 months 12 days
Developed technology
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 77,373	56,100
Accumulated Amortization	(17,499)	(8,035)
Net Carrying Amount	$ 59,874	48,065
Weighted average remaining useful life	4 years 10 months 24 days
Customer relationships
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 6,459	0
Accumulated Amortization	(308)	0
Net Carrying Amount	$ 6,151	0
Weighted average remaining useful life	6 years 8 months 12 days
Trade name
Finite Lived Intangible Assets [Line Items]
Gross Carrying Value	$ 3,623	0
Accumulated Amortization	(403)	0
Net Carrying Amount	$ 3,220	$ 0
Weighted average remaining useful life	2 years 8 months 12 days