Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Oct. 31, 2025	Oct. 31, 2024	Jan. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Investment in non-marketable equity securities	$ 31,900		$ 24,200
Non-marketable Securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payments to acquire investments	8,500	$ 5,800
U.S. government treasury securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total short-term investments	$ 6,394		$ 1,542