Accounts Receivable, Net and Unbilled Receivables - Schedule of Accounts Receivable, Net and Unbilled Receivables (Details) (Parenthetical) - USD ($) $ in Thousands		Oct. 31, 2020	Oct. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Additional long-term unbilled receivables	[1]	$ 7,063	$ 6,139
Other Assets [Member]
Accounts Notes And Loans Receivable [Line Items]
Additional long-term unbilled receivables		8,900	3,600
Government [Member]
Accounts Notes And Loans Receivable [Line Items]
U.S. government accounts receivable, including unbilled receivables		$ 1,100	$ 1,200

[1] Additional long-term unbilled receivables of $8.9 million and $3.6 million are included within “Other Assets” as of October 31, 2020 and 2019, respectively.