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Leases - Additional Information (Detail) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2024 | Oct. 31, 2025 | Oct. 31, 2024 | Oct. 31, 2025 | Oct. 31, 2024 | Sep. 01, 2025 | Jan. 31, 2025
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Operating lease right-of-use assets, net |  | $ 12,765 |  | $ 12,765 |  |  | $ 5,188
Lease liability |  | 13,646 |  | 13,646 |  |  |
Operating lease expense |  | $ 900 | $ 900 | $ 2,700 | $ 2,900 |  |
Weighted-average remaining lease term - operating leases |  | 7 years 21 days |  | 7 years 21 days |  |  |
Weighted-average discount rate - operating leases |  | 7.96% |  | 7.96% |  |  |
Operating lease, existence of option to extend | true |  |  |  |  |  |
Santa Clara [Member] | New Office Lease [Member] |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Lease term | 104 months |  |  |  |  |  |
Lease inception date | Sep. 01, 2025 |  |  |  |  |  |
Expiration date | Apr. 30, 2034 |  |  |  |  |  |
Operating lease right-of-use assets, net |  |  |  |  |  | $ 10,000 |
Lease incentives and prepayments |  |  |  |  |  | 500 |
Lease liability |  |  |  |  |  | $ 10,500 |
Santa Clara [Member] | Extended Office Lease [Member] |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Lease term | 5 years |  |  |  |  |  |

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- Definition Amount of incentive granted by lessor to lessee. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 840 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481178/840-20-25-6 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 840 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481178/840-20-25-7 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 30 -Paragraph 5 -Subparagraph (a) -SubTopic 10 -Topic 842 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479924/842-10-30-5 + Details
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