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Income Taxes - Income Before Income Taxes for Continuing Operations (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 25, 2020
Apr. 27, 2019
Apr. 28, 2018
Income Tax Disclosure [Abstract]      
United States $ 102,125 $ 73,058 $ 111,516
Foreign 13,048 22,269 17,374
Income before income taxes $ 115,173 $ 95,327 $ 128,890