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Segment Reporting - Additional Information (Detail) $ in Thousands	3 Months Ended
	Apr. 30, 2021 USD ($) Segment	Apr. 30, 2020	Jan. 31, 2021 USD ($)
Concentration Risk [Line Items]
Number of reportable segment \| Segment	1
Property and equipment, net	$ 6,308		$ 5,530
Accounts receivable	$ 34,528		$ 24,974
Sales revenue, net [Member] \| Wintech [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	63.00%	63.00%
Sales revenue, net [Member] \| Chicony [Member] \| Customer concentration risk [Member]
Concentration Risk [Line Items]
Percentage of revenue	16.00%	15.00%
Accounts receivable [Member] \| Wintech [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	$ 17,000
Accounts receivable [Member] \| Chicony [Member] \| Credit concentration risk [Member]
Concentration Risk [Line Items]
Accounts receivable	11,300
United States [Member]
Concentration Risk [Line Items]
Property and equipment, net	2,400
Asia Pacific [Member]
Concentration Risk [Line Items]
Property and equipment, net	2,400
Europe [Member]
Concentration Risk [Line Items]
Property and equipment, net	$ 1,500