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Segment Reporting - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2024 USD ($)	Jul. 31, 2023	Jul. 31, 2024 USD ($) Segment	Jul. 31, 2023	Jan. 31, 2024 USD ($)
Concentration Risk [Line Items]
Number of reportable segment \| Segment			1
Property and equipment, net	$ 9,042		$ 9,042		$ 10,439
Accounts receivable	$ 23,160		$ 23,160		24,950
Sales revenue, net [Member] \| WT [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	62.50%	53.90%	62.20%	51.50%
Sales revenue, net [Member] \| Hakuto [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	10.20%
Sales revenue, net [Member] \| Chicony [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue		13.70%		14.80%
Accounts receivable [Member] \| WT [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 11,400		$ 11,400		10,300
Accounts receivable [Member] \| Hakuto [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	700		700
Accounts receivable [Member] \| Chicony [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable					7,000
Asia Pacific [Member]
Concentration Risk [Line Items]
Property and equipment, net	4,700		4,700		5,300
United States [Member]
Concentration Risk [Line Items]
Property and equipment, net	3,200		3,200		3,900
Europe [Member]
Concentration Risk [Line Items]
Property and equipment, net	$ 1,100		$ 1,100		$ 1,200