Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivables, Contract Assets, and Contract Liabilities - Schedule of Unbilled Receivables Expected to be Billed in Future (Detail)

v3.21.2
Accounts Receivables, Contract Assets, and Contract Liabilities - Schedule of Unbilled Receivables Expected to be Billed in Future (Detail)
$ in Thousands
Oct. 31, 2021
USD ($)
Accounts Notes And Loans Receivable [Line Items]  
Unbilled receivables, amount $ 15,146
Unbilled receivables,percentage 100.00%
1 year or less [Member]  
Accounts Notes And Loans Receivable [Line Items]  
Unbilled receivables, amount $ 9,708
Unbilled receivables,percentage 65.00%
1-2 years [Member]  
Accounts Notes And Loans Receivable [Line Items]  
Unbilled receivables, amount $ 3,707
Unbilled receivables,percentage 24.00%
2-5 years [Member]  
Accounts Notes And Loans Receivable [Line Items]  
Unbilled receivables, amount $ 1,731
Unbilled receivables,percentage 11.00%