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Financial Instruments and Fair Value - Schedule of Cash Equivalents and Marketable Debt Securities (Detail) - USD ($) $ in Thousands | Jan. 31, 2024 | Jan. 31, 2023
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Schedule of Available-for-sale Securities [Line Items] |  |
Total cash equivalents and marketable debt securities | $ 106,116 | $ 101,194
Included in cash equivalents [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total cash equivalents and marketable debt securities | 31,103 | 7,872
Included in marketable debt securities [Member] |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total cash equivalents and marketable debt securities | $ 75,013 | $ 93,322

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