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Investments - Available-for-Sale Marketable Securities, Fair Value and Unrealized Losses Continuous Unrealized Loss Position (Details) $ in Thousands | Oct. 31, 2021 USD ($)
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Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |
AFS, Less Than 12 Months, Unrealized Losses | $ (75)
AFS, Less Than 12 Months, Fair Value | 131,667
AFS, 12 Months or Greater, Unrealized Losses | (194)
AFS, 12 Months or Greater, Fair Value | 99,207
AFS, Total Unrealized Losses | (269)
AFS, Total Fair Value | 230,874
Certificates of deposit |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |
AFS, Less Than 12 Months, Unrealized Losses | (1)
AFS, Less Than 12 Months, Fair Value | 29,399
AFS, 12 Months or Greater, Unrealized Losses | 0
AFS, 12 Months or Greater, Fair Value | 0
AFS, Total Unrealized Losses | (1)
AFS, Total Fair Value | 29,399
U.S. government agencies securities |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |
AFS, Less Than 12 Months, Unrealized Losses | 0
AFS, Less Than 12 Months, Fair Value | 0
AFS, 12 Months or Greater, Unrealized Losses | (22)
AFS, 12 Months or Greater, Fair Value | 15,793
AFS, Total Unrealized Losses | (22)
AFS, Total Fair Value | 15,793
Commercial paper |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |
AFS, Less Than 12 Months, Unrealized Losses | (1)
AFS, Less Than 12 Months, Fair Value | 29,667
AFS, 12 Months or Greater, Unrealized Losses | 0
AFS, 12 Months or Greater, Fair Value | 0
AFS, Total Unrealized Losses | (1)
AFS, Total Fair Value | 29,667
Corporate debt securities |
Debt Securities, Available-for-sale, Unrealized Loss Position [Line Items] |
AFS, Less Than 12 Months, Unrealized Losses | (73)
AFS, Less Than 12 Months, Fair Value | 72,601
AFS, 12 Months or Greater, Unrealized Losses | (172)
AFS, 12 Months or Greater, Fair Value | 83,414
AFS, Total Unrealized Losses | (245)
AFS, Total Fair Value | $ 156,015

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