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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

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