Income Taxes (Details)	3 Months Ended		6 Months Ended
	Oct. 28, 2016	Oct. 23, 2015	Oct. 28, 2016	Oct. 23, 2015
Income Tax Disclosure [Abstract]
Effective income tax provision (benefit) rate, continuing operations	(179.90%)	24.80%	18.70%	24.60%