Cash Equivalents and Investments - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
Oct. 31, 2021	Jan. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Contractual maturities of available-for-sale debt securities, maximum	36 months
Gross unrealized losses on available-for-sale debt securities	$ 3,764	$ 637

Cash Equivalents And Debt Securities, Available-For-Sale, Accumulated Gross Unrealized Loss, Before Tax

No definition available.

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Balance Type:	debit
Period Type:	instant