Property and Equipment, Net - Schedule of Property and Equipment (Detail) - USD ($) $ in Thousands	Apr. 30, 2024	Jan. 31, 2024
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 37,595	$ 37,039
Less: accumulated depreciation and amortization	(27,832)	(26,600)
Total property and equipment, net	9,763	10,439
Computer hardware and software [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	24,007	23,518
Tools and equipment [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	8,576	8,564
Furniture and fixtures [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	1,352	1,351
Leasehold improvements [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	3,448	3,440
Construction in progress [Member]
Property Plant And Equipment [Line Items]
Property and equipment, gross	$ 212	$ 166