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Debt - Schedule of Required Principal Payments Remaining on Long Term Debt Outstanding (Detail) - Term Loan [Member]
$ in Thousands
Oct. 27, 2018
USD ($)
Debt Instrument [Line Items]  
Fiscal 2019 (remaining) $ 1,486
Fiscal 2020 4,840
Fiscal 2021 5,208
Fiscal 2022 5,576
Fiscal 2023 2,250
Long term debt $ 19,360