Property and Equipment, Net - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Property, Plant and Equipment [Line Items]
Capitalized internal-use software costs	$ 3,300	$ 900	$ 9,100	$ 2,200
Depreciation and amortization			5,862	2,026
Capitalized computer software, amortization	600	300	1,500	1,000
Property, Plant and Equipment
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 1,200	$ 700	$ 3,300	$ 2,000