Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Apr. 30, 2026	Apr. 30, 2025	Jan. 31, 2026
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in non-marketable equity securities	$ 37,700		$ 32,300
Non-marketable Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payments to acquire investments	3,000	$ 5,000
Unrealized gains (losses) on investments	6,500	0
Realized gains (losses) on invesments	9,900	$ 0
U.S. government treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	$ 979		$ 5,667

Amount of unrealized gain (loss) on 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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Amount of investment in equity security without readily determinable fair value.

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The cash outflow associated with the purchase of all investments (debt, security, other) during the period.

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