Balance Sheet Components - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Apr. 30, 2022	Apr. 30, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Depreciation and amortization for property and equipment	$ 1.2	$ 0.8
Amortization expense for capitalized internal-use software	1.1	0.7
Capitalized internal-use software costs	$ 2.5	$ 1.0