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Segment Reporting - Additional Information (Detail) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2024 USD ($)	Oct. 31, 2023	Oct. 31, 2024 USD ($) Segment	Oct. 31, 2023	Jan. 31, 2024 USD ($)
Concentration Risk [Line Items]
Number of reportable segment \| Segment			1
Property and equipment, net	$ 9,684		$ 9,684		$ 10,439
Accounts receivable	$ 33,967		$ 33,967		24,950
Sales revenue, net [Member] \| WT [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	66.10%	53.70%	63.80%	52.20%
Sales revenue, net [Member] \| Hakuto [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue		12.00%
Sales revenue, net [Member] \| Chicony [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	10.70%	11.70%	10.20%	13.90%
Accounts receivable [Member] \| WT [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 16,800		$ 16,800		10,300
Accounts receivable [Member] \| Chicony [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	9,400		9,400		7,000
Asia Pacific [Member]
Concentration Risk [Line Items]
Property and equipment, net	4,400		4,400		5,300
United States [Member]
Concentration Risk [Line Items]
Property and equipment, net	4,200		4,200		3,900
Europe [Member]
Concentration Risk [Line Items]
Property and equipment, net	$ 1,100		$ 1,100		$ 1,200