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Commitments and Contingencies - Additional Information (Detail) - USD ($) | Jul. 31, 2025 | Jan. 31, 2025
--- | --- | ---
Loss Contingencies [Line Items] |  |
Total manufacturing purchase commitments | $ 69,300,000 | $ 56,400,000
Liabilities recognized from adverse purchase commitments | 0 | 0
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

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