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Financial Instruments and Fair Value - Summary of Contractual Maturities of Investments (Detail) - USD ($) $ in Thousands | Apr. 30, 2023 | Jan. 31, 2023
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Available For Sale Securities Debt Maturities Fair Value [Abstract] |  |
Due within one year | $ 36,607 | $ 48,016
Due in 1 - 5 years | 65,696 | 52,414
Due in 5 - 7 years | 0 | 764
Total cash equivalents and marketable debt securities | $ 102,303 | $ 101,194

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