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v3.23.1

Leases - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Jan. 31, 2023 | Jan. 31, 2022 | Jan. 31, 2021
Lessee Lease Description [Line Items] |  |  |
Increase to operating lease liabilities | $ 0.8 | $ 4.4 |
Increase to operating lease ROU assets | 0.8 | 4.4 |
Operating lease expense | $ 3.7 | $ 3.5 | $ 3.0
Weighted-average remaining lease term - operating leases | 2 years 7 months 9 days |  |
Weighted-average discount rate - operating leases | 3.58% |  |
Shanghai [Member] | Extended Office Lease [Member] |  |  |
Lessee Lease Description [Line Items] |  |  |
Lease commencement date |  | Dec. 01, 2021 |
Expiration date |  | Nov. 30, 2024 |
Lease term |  | 3 years |
Shanghai [Member] | Additional Office Space [Member] |  |  |
Lessee Lease Description [Line Items] |  |  |
Lease commencement date |  | Aug. 01, 2021 |
Expiration date |  | Nov. 30, 2024 |
Lease term |  | 40 months |
Shenzhen and Santa Clara [Member] | Extended Office Lease [Member] |  |  |
Lessee Lease Description [Line Items] |  |  |
Lease commencement date | Oct. 01, 2022 |  |
Expiration date | Sep. 30, 2024 |  |
Lease term | 2 years |  |
Hong Kong [Member] | Extended Office Lease [Member] |  |  |
Lessee Lease Description [Line Items] |  |  |
Lease commencement date |  | Dec. 01, 2021 |
Expiration date |  | Nov. 30, 2026 |
Lease term |  | 5 years |

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- Definition Increased amount of lessee's right to use underlying asset under operating lease. + References No definition available. + Details
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- Definition Lease commencement 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 No definition available. + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (a)(3) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918673-209980 + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(4) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + 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 -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI https://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (g)(3) -URI https://asc.fasb.org/extlink&oid=128292326&loc=SL77918686-209980 + Details
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