Acquisitions, Intangible Assets and Goodwill - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Oct. 31, 2020	Jan. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Total intangible assets	$ 17,562	$ 5,729
Less: accumulated amortization	(2,742)	(934)
Total intangible assets, net	14,820	4,795
Developed technology
Finite-Lived Intangible Assets [Line Items]
Total intangible assets	11,331	5,632
Patents
Finite-Lived Intangible Assets [Line Items]
Total intangible assets	6,184	0
Other
Finite-Lived Intangible Assets [Line Items]
Total intangible assets	$ 47	$ 97