Financial Instruments and Fair Value - Summary of Contractual Maturities of Investments (Detail) - USD ($) $ in Thousands	Apr. 30, 2025	Jan. 31, 2025
Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]
Due within one year	$ 26,378	$ 35,405
Due in 1 - 5 years	91,913	74,087
Total cash equivalents and marketable debt securities	$ 118,291	$ 109,492

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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