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Accrued Expenses - Narrative (Detail) - USD ($)
Nov. 01, 2020
May 03, 2020
Nov. 03, 2019
Payables and Accruals [Line Items]      
Accrued expenses $ 11,684,000 $ 5,854,000 $ 9,248,000
Current accrued expenses $ 11,684,000 5,687,000 [1] 8,263,000
Long-term accrued expenses   $ 167,000 [1] 333,000
Current Liabilities - Discontinued Operation [Member]      
Payables and Accruals [Line Items]      
Accrued expenses     $ 652,000
[1] Derived from audited financial statements.