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Leases - Additional Information (Detail) - USD ($) $ in Millions	12 Months Ended
	Jan. 31, 2024	Jan. 31, 2023	Jan. 31, 2022
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	$ 3.7	$ 3.5
Weighted-average remaining lease term - operating leases	1 year 9 months 7 days
Weighted-average discount rate - operating leases	3.63%
Shanghai [Member] | Extended Office Lease [Member]
Lessee Lease Description [Line Items]
Lease inception 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 inception 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 inception date		Oct. 01, 2022
Expiration date		Sep. 30, 2024
Shenzhen [Member] | Extended Office Lease [Member]
Lessee Lease Description [Line Items]
Lease term		2 years
Santa Clara [Member] | Extended Office Lease [Member]
Lessee Lease Description [Line Items]
Lease term		2 years
Hong Kong [Member] | Extended Office Lease [Member]
Lessee Lease Description [Line Items]
Lease inception date			Dec. 01, 2021
Expiration date			Nov. 30, 2026
Lease term			5 years

X

- Definition

Increased present value of lessee's discounted obligation for lease payments from operating lease.

+ References

No definition available.

+ Details

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X

- Definition

Increased 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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X

- 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 3
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147478964/842-20-50-3

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X

- 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

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X

- 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

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X

- 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

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X

- 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

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