Discontinued Operations - Schedule of Income from Discontinued Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Oct. 27, 2017	Oct. 28, 2016	Oct. 27, 2017	Oct. 28, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net income from discontinued operations	$ 0	$ 4,352	$ 0	$ 8,938
Restaurants Business | Discontinued Operations, Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Net sales	0	219,805	0	440,181
Costs of sales	0	56,007	0	111,243
Other operating expenses	0	157,562	0	317,269
Operating income from discontinued operations	0	6,236	0	11,669
Net interest expense	0	406	0	812
Income from discontinued operations before income taxes	0	5,830	0	10,857
Provision for income taxes	0	1,478	0	1,919
Net income from discontinued operations	$ 0	$ 4,352	$ 0	$ 8,938