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Accrued Expenses - Narrative (Detail) - USD ($)
Aug. 02, 2020
May 03, 2020
Aug. 04, 2019
Payables and Accruals [Line Items]      
Accrued expenses $ 7,969,000 $ 5,854,000 $ 8,899,000
Current accrued expenses 7,852,000 5,687,000 [1] 8,104,000
Long-term accrued expenses $ 117,000 $ 167,000 [1] 333,000
Current Liabilities - Discontinued Operation [Member]      
Payables and Accruals [Line Items]      
Accrued expenses     $ 462,000
[1] Derived from audited financial statements.