Property and Equipment, Net - Schedule of Property and Equipment, Net (Details) - USD ($) $ in Thousands	Apr. 30, 2026	Jan. 31, 2026
Property, Plant, and Equipment [Line Items]
Total property and equipment, gross	$ 116,800	$ 116,582
Less: accumulated depreciation	(89,443)	(86,494)
Total property and equipment, net	27,357	30,088
Computer software
Property, Plant, and Equipment [Line Items]
Total property and equipment, gross	27,680	26,839
Office equipment
Property, Plant, and Equipment [Line Items]
Total property and equipment, gross	23,985	23,907
Furniture and fixtures
Property, Plant, and Equipment [Line Items]
Total property and equipment, gross	7,023	7,133
Leasehold improvements
Property, Plant, and Equipment [Line Items]
Total property and equipment, gross	57,962	57,983
Construction in progress
Property, Plant, and Equipment [Line Items]
Total property and equipment, gross	40	33
Software in progress
Property, Plant, and Equipment [Line Items]
Total property and equipment, gross	$ 110	$ 687