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Cash Equivalents and Short Term Investments - Additional Information (Details) | 3 Months Ended |
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Apr. 30, 2024 USD ($) investment | Apr. 30, 2023 USD ($) | Jan. 31, 2024 USD ($) investment
Cash, Cash Equivalents, and Short-Term Investments [Abstract] |  |  |
Reclassify from accumulated other comprehensive income (loss) | $ 0 | $ 0 |
Contractual maturity in one year | 88,800,000 |  | $ 97,600,000
Contractual maturity greater than one year | $ 19,400,000 |  | $ 14,700,000
Number of short-term investments in unrealized loss position, investments | investment | 19 |  | 13

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