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Financial Instruments and Fair Value - Summary of Contractual Maturities of Investments (Detail) - USD ($) $ in Thousands	Oct. 31, 2025	Jan. 31, 2025
Debt Securities, Available-for-Sale, Fair Value, Fiscal Year Maturity [Abstract]
Due within one year	$ 24,281	$ 35,405
Due in 1 - 5 years	102,795	74,087
Due in 5 - 15 years	1,022	0
Total cash equivalents and marketable debt securities	$ 128,098	$ 109,492

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Fair value of available for sale securities maturing due in five to fifteen years following the latest balance sheet

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Fair value of available for sale securities maturing due in one to five years following the latest balance sheet.

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Fair value of available-for-sale debt securities maturing within one year following the latest balance sheet.

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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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