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Commitments and Contingencies - Additional Information (Detail) - USD ($) | 12 Months Ended |
--- | --- | ---
Jan. 31, 2025 | Jan. 31, 2024
Loss Contingencies [Line Items] |  |
Total manufacturing purchase commitments | $ 56,400,000 | $ 30,700,000
Liabilities recognized from adverse purchase commitments | 0 | 0
Future undiscounted lease cash payments | 15,700,000 |
Indemnification agreement [Member] |  |
Loss Contingencies [Line Items] |  |
Payments under indemnification obligations | 0 |
Liabilities recorded under indemnification obligations | 0 | 0
Other Matters [Member] |  |
Loss Contingencies [Line Items] |  |
Liabilities recorded under indemnification obligations | 0 | $ 0
Santa Clara [Member] | Additional Office Space [Member] |  |
Loss Contingencies [Line Items] |  |
Commitment service purchase | $ 8,000,000 |
Lease term | 104 months |
Operating lease inception date | Sep. 01, 2025 |
Expiration date | Apr. 30, 2034 |

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