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Credit Agreement and Debt - Schedule of Required Principal Payments Remaining on Long Term Debt Outstanding (Detail) - Term Loan [Member]
$ in Thousands
Jul. 31, 2021
USD ($)
Debt Instrument [Line Items]  
Fiscal 2022, remainder $ 375
Fiscal 2023 1,000
Fiscal 2024 1,000
Fiscal 2025 1,250
Fiscal 2026 6,000
Long-term Debt $ 9,625