Quarterly report pursuant to Section 13 or 15(d)

Marketable Securities - Narrative (Details)

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Marketable Securities - Narrative (Details) - USD ($)
$ in Thousands
Oct. 31, 2021
Jan. 31, 2021
Investments, Debt and Equity Securities [Abstract]    
Marketable securities with contractual maturities of one year or more $ 13,079 $ 0