Fair Value Measurements - Narrative (Details) - USD ($)	12 Months Ended
	Jan. 31, 2025	Jan. 31, 2024	Jan. 31, 2023
Fair Value Assets and Liabilities Measure On Recurring And Nonrecurring Basis [Line Items]
Investment maturity period	2 years
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss	$ 1,200,000
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer	15,000,000
Debt and equity securities	395,444,000	$ 188,069,000
Strategic Investments member
Fair Value Assets and Liabilities Measure On Recurring And Nonrecurring Basis [Line Items]
Realized investment gains (losses)	300,000	3,500,000
Unrealized gain (loss) on investments	0	800,000	$ 0
Fair Value, Inputs, Level 3 [Member] | Strategic Investments member
Fair Value Assets and Liabilities Measure On Recurring And Nonrecurring Basis [Line Items]
Debt and equity securities	$ 23,200,000	$ 16,100,000