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Convertible Senior Notes - Net carrying value of the liability component (Details) - Senior Notes - Convertible Debt - USD ($)
$ in Thousands
Oct. 31, 2021
Jul. 31, 2021
Debt Instrument [Line Items]    
Principal $ 400,000 $ 400,000
Debt discount 47,022 50,198
Debt issuance costs 5,629 5,977
Net carrying amount $ 347,349 $ 343,825