Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivables, Contract Assets, and Contract Liabilities - Schedule of Changes in Deferred Revenue (Detail)

v3.21.2
Accounts Receivables, Contract Assets, and Contract Liabilities - Schedule of Changes in Deferred Revenue (Detail)
$ in Thousands
9 Months Ended
Oct. 31, 2021
USD ($)
Deferred Revenue, Current [Member]  
Accounts Notes And Loans Receivable [Line Items]  
Balance $ 4,737
Decrease (1,793)
Balance 2,944
Deferred Revenue, Long-Term [Member]  
Accounts Notes And Loans Receivable [Line Items]  
Balance 657
Decrease (592)
Balance $ 65