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Income Taxes - Uncertain Income Tax Positions - Narrative (Detail) - USD ($)
Aug. 02, 2020
May 03, 2020
Aug. 04, 2019
Income Taxes [Line Items]      
Unrecognized tax benefits $ 1,400,000    
Unrecognized tax benefits that would favorably impact effective income tax rate if recognized 1,100,000 $ 1,300,000 $ 914,000
Non-current Deferred Income Taxes [Member]      
Income Taxes [Line Items]      
Unrecognized tax benefits 380,000    
Income Taxes Payable - Long-Term [Member]      
Income Taxes [Line Items]      
Unrecognized tax benefits $ 1,100,000 $ 1,300,000 $ 914,000