Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Apr. 30, 2021	Jan. 31, 2021
Property, Plant and Equipment
Total property and equipment	$ 91,855	$ 80,922
Less: accumulated depreciation and amortization	(14,780)	(11,954)
Total property and equipment, net	77,075	68,968
Computers, equipment, and software
Property, Plant and Equipment
Total property and equipment	5,146	3,817
Furniture and fixtures
Property, Plant and Equipment
Total property and equipment	7,489	6,627
Leasehold improvements
Property, Plant and Equipment
Total property and equipment	52,684	41,593
Capitalized internal-use software development costs
Property, Plant and Equipment
Total property and equipment	12,855	12,855
Less: accumulated depreciation and amortization	(6,400)	(5,500)
Construction in progress
Property, Plant and Equipment
Total property and equipment	$ 13,681	$ 16,030