Annual report pursuant to Section 13 and 15(d)

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

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Accounts Receivables, Contract Assets, and Contract Liabilities - Schedule of Unbilled Receivables Expected to be Billed in Future (Detail)
$ in Thousands
Jan. 31, 2022
USD ($)
Accounts Notes And Loans Receivable [Line Items]  
Unbilled receivables, amount $ 13,112
Unbilled receivables,percentage 100.00%
1 year or less [Member]  
Accounts Notes And Loans Receivable [Line Items]  
Unbilled receivables, amount $ 9,160
Unbilled receivables,percentage 70.00%
1-2 years [Member]  
Accounts Notes And Loans Receivable [Line Items]  
Unbilled receivables, amount $ 2,279
Unbilled receivables,percentage 17.00%
2-5 years [Member]  
Accounts Notes And Loans Receivable [Line Items]  
Unbilled receivables, amount $ 1,673
Unbilled receivables,percentage 13.00%