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Financial Instruments and Fair Value - Summary of Contractual Maturities of Investments (Detail) - USD ($) $ in Thousands | Jul. 31, 2023 | Jan. 31, 2023
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Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract] |  |
Due within one year | $ 28,953 | $ 48,016
Due in 1 - 5 years | 73,922 | 52,414
Due in 5 - 7 years | 0 | 764
Total cash equivalents and marketable debt securities | $ 102,875 | $ 101,194

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