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Segment Reporting - Additional Information (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2023 USD ($)	Jul. 31, 2022	Jul. 31, 2023 USD ($) Segment	Jul. 31, 2022	Jan. 31, 2023 USD ($)
Concentration Risk [Line Items]
Number of reportable segment \| Segment			1
Property and equipment, net	$ 11,246		$ 11,246		$ 11,814
Accounts receivable	$ 30,158		$ 30,158		51,987
Sales revenue, net [Member] \| WT [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	53.90%	59.40%	51.50%	57.90%
Sales revenue, net [Member] \| Chicony [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	13.70%	12.90%	14.80%	12.10%
Accounts receivable [Member] \| WT [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 12,200		$ 12,200
Accounts receivable [Member] \| Chicony [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	8,800		8,800
Asia Pacific [Member]
Concentration Risk [Line Items]
Property and equipment, net	5,600		5,600		6,300
United States [Member]
Concentration Risk [Line Items]
Property and equipment, net	4,300		4,300		4,000
Europe [Member]
Concentration Risk [Line Items]
Property and equipment, net	$ 1,300		$ 1,300		$ 1,500