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Financial Instruments and Fair Value - Summary of Contractual Maturities of Available-for-sale Securities (Detail) - USD ($) $ in Thousands | Jul. 31, 2024 | Jan. 31, 2024
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Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] |  |
Due within one year | $ 66,783 | $ 50,216
Due in 1 - 5 years | 31,709 | 55,900
Total cash equivalents and marketable debt securities | $ 98,492 | $ 106,116

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