Consolidated Statements of Net Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Apr. 29, 2016	Apr. 24, 2015	Apr. 25, 2014
Income Statement [Abstract]
Net Sales	$ 1,338,827	$ 1,349,190	$ 1,328,552
Cost of sales	425,585	457,744	451,777
Operating wage and fringe benefit expenses	427,148	423,539	406,307
Other operating expenses	222,060	217,991	218,904
Selling, general and administrative expenses	139,822	143,295	122,133
Depreciation and amortization expense	79,607	80,074	79,456
Impairments	8,384	8,861	16,850
Operating Income	36,221	17,686	33,125
Net interest expense	10,800	8,649	2,014
Income From Continuing Operations Before Income Taxes	25,421	9,037	31,111
Provision (Benefit) for income taxes	1,199	(7,516)	143
Income From Continuing Operations	24,222	16,553	30,968
Income from Discontinued Operations, Net of Income Taxes	0	0	2,717
Net Income	$ 24,222	$ 16,553	$ 33,685
Earnings Per Share - Income from Continuing Operations
Basic (in dollars per share)	$ 1.14	$ 0.70	$ 1.17
Diluted (in dollars per share)	1.13	0.70	1.16
Earnings Per Share - Income from Discontinued Operations
Basic (in dollars per share)	0.00	0.00	0.10
Diluted (in dollars per share)	0.00	0.00	0.10
Earnings Per Share - Net Income
Basic (in dollars per share)	1.14	0.70	1.27
Diluted (in dollars per share)	1.13	0.70	1.26
Cash dividends per share (in dollars per share)	$ 1.3	$ 1.24	$ 1.205
Weighted Average Shares Outstanding
Basic (in shares)	21,336	23,489	26,450
Dilutive shares (in shares)	158	160	254
Diluted (in shares)	21,494	23,649	26,704