Discontinued Operations - Discontinued Operations in Statements of Net Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Apr. 28, 2017	Apr. 29, 2016	Apr. 24, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) Income from discontinued operations	$ 109,431	$ 8,014	$ 21,933
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	876,786	951,211	969,878
Cost of sales	226,516	252,612	258,677
Operating wage and fringe benefit expenses	359,959	384,959	381,822
Operating expenses	172,717	169,673	168,610
Selling, general and administrative expenses	62,025	73,873	69,916
Depreciation and amortization expense	36,059	58,562	61,710
Impairments	522	8,385	6,100
Operating (Loss) Income from discontinued operations	18,988	3,147	23,043
Gain on sale of the Restaurants Business before income taxes	150,167	0	0
Net interest expense	2,203	373	0
(Loss) Income from discontinued operations before income taxes	166,952	2,774	23,043
(Benefit) Provision for income taxes	57,521	(5,240)	1,110
(Loss) Income from discontinued operations	$ 109,431	$ 8,014	$ 21,933