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Financial Instruments and Fair Value - Summary of Contractual Maturities of Investments (Detail) - USD ($) $ in Thousands | Apr. 30, 2025 | Jan. 31, 2025
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Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] |  |
Due within one year | $ 26,378 | $ 35,405
Due in 1 - 5 years | 91,913 | 74,087
Total cash equivalents and marketable debt securities | $ 118,291 | $ 109,492

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