Goodwill and Intangible Assets, Net - Narrative (Details) - USD ($)	12 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Jan. 31, 2020
Acquired Finite-Lived Intangible Assets [Line Items]
Goodwill impairment	$ 0	$ 0	$ 0
Finite-lived intangible assets acquired	$ 6,200,000
Intangible assets acquired, useful life	3 years
Amortization of intangible assets	$ 665,000	$ 222,000	$ 0
Developed Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired, useful life	3 years
Developed technology from business combination
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired, useful life	2 years 9 months 18 days
Developed technology from asset acquisition
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired, useful life	1 year 3 months 18 days