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Income Taxes - Uncertain Income Tax Positions - Narrative (Detail) - USD ($) | Aug. 02, 2020 | May 03, 2020 | Aug. 04, 2019
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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

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