Cash and Cash Equivalents, Investments and Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended
Apr. 30, 2024	Apr. 30, 2024	Jan. 31, 2024
Fair Value Assets and Liabilities Measure On Recurring And Nonrecurring Basis [Line Items]
Investments, weighted average maturity		18 months
Investments, term	2 years
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer, accumulated loss	$ 1,400	$ 1,400
Debt securities, available-for-sale, continuous unrealized loss position, 12 months or longer	333,400	333,400
Debt and equity securities	319,181	319,181	$ 188,069
Level 3 \| Strategic Investments
Fair Value Assets and Liabilities Measure On Recurring And Nonrecurring Basis [Line Items]
Debt and equity securities	$ 18,400	$ 18,400	$ 16,100

Investments, Term

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Investments, Weighted Average Maturity, Maximum

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- Definition

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent.

+ References

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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