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Fair Value Measurements - Narrative (Details)	3 Months Ended
Fair Value Measurements - Narrative (Details)	Apr. 30, 2026 USD ($)	Apr. 30, 2025 USD ($)	Feb. 07, 2025 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity securities without readily determinable fair value, upward price adjustment, annual amount	$ 0.0	$ 500,000
Cumulative unrealized gains	700,000
Impairment loss	0	0
Realized investment gains	$ 0.0	$ 1,200,000
Measurement Input, Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs \| pURE	0.067
Weighted Average \| Measurement Input Expected Achievement
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Unobservable inputs \| pURE	1.000
Sandbox
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Potential payment			$ 10,000,000.0