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Income Taxes - Income From Continuing Operations Before Taxes (Details) - USD ($)
$ in Thousands
12 Months Ended
Apr. 27, 2019
Apr. 28, 2018
Apr. 29, 2017
Income Tax Disclosure [Abstract]      
United States $ 76,035 $ 144,278 $ 217,529
International 30,193 34,985 33,352
Income from continuing operations before taxes $ 106,228 $ 179,263 $ 250,881