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Income Taxes - Valuation Allowance - Narrative (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Oct. 31, 2021
Nov. 01, 2020
Aug. 02, 2020
Oct. 31, 2021
Nov. 01, 2020
Income Taxes [Line Items]          
Income tax charge $ 444 $ 1,613   $ 1,349 $ 5,937
Valuation Allowance, Net Deferred Tax Assets [Member] | GILTI [Member]          
Income Taxes [Line Items]          
Income tax charge     $ 7,000   $ 7,000