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Income Taxes - Effective Income Tax Rate - Narrative (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Oct. 31, 2021
Nov. 01, 2020
Oct. 31, 2021
Nov. 01, 2020
Income Tax Disclosure [Abstract]        
Income taxes $ 444 $ 1,613 $ 1,349 $ 5,937
Effective income tax rate     30.30% 109.50%