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Leases - Additional Information (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 31, 2024 | Oct. 31, 2023 | Oct. 31, 2024 | Oct. 31, 2023
Lessee, Lease, Description [Line Items] |  |  |  |
Additional operating lease right-of-use assets |  |  | $ 3.5 |
Additional operating lease liabilities |  |  | 3.5 |
Operating lease expense | $ 0.9 | $ 1.0 | $ 2.9 | $ 2.8
Weighted-average remaining lease term - operating leases | 2 years 2 months 8 days |  | 2 years 2 months 8 days |
Weighted-average discount rate - operating leases | 3.71% |  | 3.71% |
Shanghai [Member] | Extended Office Lease [Member] |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lease term | 36 months |  | 36 months |
Lease inception date |  |  | Dec. 01, 2024 |
Expiration date |  |  | Nov. 30, 2027 |
Shenzhen [Member] | Extended Office Lease [Member] |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lease term | 28 months |  | 28 months |
Lease inception date |  |  | Oct. 01, 2024 |
Expiration date |  |  | Jan. 31, 2027 |
Italy [Member] | Extended Office Lease [Member] |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lease term | 22 months |  | 22 months |
Lease inception date |  |  | Jul. 01, 2024 |
Expiration date |  |  | Apr. 30, 2026 |
Santa Clara [Member] | Extended Office Lease [Member] |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Lease term | 24 months |  | 24 months |
Lease inception date |  |  | Oct. 01, 2024 |
Expiration date |  |  | Sep. 30, 2026 |

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- Definition Additional amount of lessee's right to use underlying asset under operating lease. + References No definition available. + Details
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- Definition Operating lease inception date. + References No definition available. + Details
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- Definition Date which lease or group of leases is set to expire, in YYYY-MM-DD format. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 7A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-7A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479041/842-20-45-4 + Details
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- Definition Weighted average discount rate for operating lease calculated at point in time. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(4) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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- Definition Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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