Correction of Consolidated Financial Statements (Statements of Net Income) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Apr. 25, 2014	Jan. 24, 2014	Oct. 25, 2013	Jul. 26, 2013	Apr. 26, 2013	Jan. 25, 2013	Oct. 26, 2012	Jul. 27, 2012	Apr. 25, 2014	Apr. 26, 2013	Apr. 27, 2012
Net Sales	$ 326,371	$ 340,132	$ 332,600	$ 329,449	$ 333,909	$ 343,321	$ 329,555	$ 323,441	$ 1,328,552	$ 1,330,226	$ 1,287,210
Cost of sales									449,070	422,847	419,596
Operating wage and fringe benefit expenses									401,255	405,113	397,351
Other operating expenses									198,634	191,191	178,016
Selling, general and administrative expenses									154,632	153,802	125,508
Depreciation and amortization expense										69,319	60,264
Impairment of assets held for sale									12,380	0	0
Loss on sale of Mimi's Café										0
Operating Income	4,277	7,954	8,895	11,999	22,239	19,119	21,976	24,620	33,125	87,954	106,475
Net interest expense									2,014	11,485	7,884
Income From Continuing Operations Before Income Taxes									31,111	76,469	98,591
Provision (Benefit) for income taxes									143	(6,084)	28,406
Income From Continuing Operations									30,968	82,553	70,185
Income (loss) from discontinued operations	3,205	(354)	(134)	0	198	(80,219)	(3,239)	(114)	2,717	(83,374)	2,757
Net Income (Loss)	13,009	6,181	6,119	8,376	29,781	(55,779)	10,383	14,794	33,685	(821)	72,942
Basic	$ 0.40	$ 0.25	$ 0.23	$ 0.30	$ 1.07	$ 0.87	$ 0.48	$ 0.53	$ 1.17	$ 2.94	$ 2.38
Diluted	$ 0.40	$ 0.24	$ 0.23	$ 0.30	$ 1.05	$ 0.86	$ 0.47	$ 0.52	$ 1.16	$ 2.90	$ 2.35
Basic	$ 0.13	$ (0.01)	$ 0.00	$ 0.00	$ 0.01	$ (2.87)	$ (0.11)	$ 0.00	$ 0.10	$ (2.97)	$ 0.09
Diluted	$ 0.13	$ (0.01)	$ 0.00	$ 0.00	$ 0.01	$ (2.82)	$ (0.11)	$ 0.00	$ 0.10	$ (2.93)	$ 0.09
Basic	$ 0.53	$ 0.23	$ 0.22	$ 0.30	$ 1.07	$ (2.00)	$ 0.37	$ 0.53	$ 1.27	$ (0.03)	$ 2.48
Diluted	$ 0.53	$ 0.23	$ 0.22	$ 0.30	$ 1.06	$ (1.96)	$ 0.36	$ 0.52	$ 1.26	$ (0.03)	$ 2.44
As Reported
Net Sales		340,132		329,449	353,877	434,440	410,877	409,715		1,608,909	1,654,413
Cost of sales										495,786	517,677
Operating wage and fringe benefit expenses										512,292	535,069
Other operating expenses										258,896	260,938
Selling, general and administrative expenses										180,158	150,743
Depreciation and amortization expense										79,482	82,112
Impairment of assets held for sale										68,409
Loss on sale of Mimi's Café										57,743
Operating Income		7,954		11,999	(38,490)	(47,388)	16,757	25,264		(43,857)	107,874
Net interest expense										11,485	7,884
Income From Continuing Operations Before Income Taxes										(55,342)	99,990
Provision (Benefit) for income taxes										(52,480)	27,140
Income From Continuing Operations										(2,862)	72,850
Income (loss) from discontinued operations										0	0
Net Income (Loss)		5,723		9,153	27,024	(55,236)	10,342	15,008		(2,862)	72,850
Basic		$ 0.23		$ 0.33
Diluted		$ 0.23		$ 0.33
Basic		$ (0.01)		$ 0.00
Diluted		$ (0.01)		$ 0.00
Basic		$ 0.22		$ 0.33	$ 0.97	$ (1.97)	$ 0.36	$ 0.53		$ (0.10)	$ 2.45
Diluted		$ 0.22		$ 0.33	$ 0.97	$ (1.97)	$ 0.36	$ 0.53		$ (0.10)	$ 2.45
As Recast
Net Sales		340,132		329,449	333,909	343,321	329,555	323,441		1,330,226	1,288,398
Cost of sales										422,847	419,596
Operating wage and fringe benefit expenses										404,395	398,782
Other operating expenses										191,557	179,485
Selling, general and administrative expenses										153,083	125,193
Depreciation and amortization expense										66,138	58,536
Impairment of assets held for sale										0
Loss on sale of Mimi's Café										0
Operating Income		7,954		11,999	22,967	20,202	23,526	25,511		92,206	106,806
Net interest expense										11,485	7,884
Income From Continuing Operations Before Income Taxes										80,721	98,922
Provision (Benefit) for income taxes										(734)	28,372
Income From Continuing Operations										81,455	70,550
Income (loss) from discontinued operations										(84,317)	2,300
Net Income (Loss)		5,723		9,153	27,024	(55,236)	10,342	15,008		(2,862)	72,850
Basic		$ 0.23		$ 0.33	$ 1.03	$ 0.83	$ 0.51	$ 0.53		$ 2.90	$ 2.39
Diluted		$ 0.23		$ 0.33	$ 1.02	$ 0.82	$ 0.50	$ 0.53		$ 2.86	$ 2.36
Basic		$ (0.01)		$ 0.00	$ (0.06)	$ (2.81)	$ (0.15)	$ 0.00		$ (3.00)	$ 0.08
Diluted		$ (0.01)		$ 0.00	$ (0.06)	$ (2.76)	$ (0.14)	$ 0.00		$ (2.96)	$ 0.08
Basic		$ 0.22		$ 0.33	$ 0.97	$ (1.98)	$ 0.37	$ 0.53		$ (0.10)	$ 2.47
Diluted		$ 0.21		$ 0.33	$ 0.96	$ (1.94)	$ 0.36	$ 0.53		$ (0.10)	$ 2.43
Adjustments
Net Sales		0		0	0	0	0	0		0	(1,188)
Cost of sales										0	0
Operating wage and fringe benefit expenses										718	(1,431)
Other operating expenses										(366)	(1,469)
Selling, general and administrative expenses										719	315
Depreciation and amortization expense										3,181	1,728
Impairment of assets held for sale										0
Loss on sale of Mimi's Café										0
Operating Income		0		0	(728)	(1,083)	(1,550)	(891)		(4,252)	(331)
Net interest expense										0	0
Income From Continuing Operations Before Income Taxes										(4,252)	(331)
Provision (Benefit) for income taxes										(5,350)	34
Income From Continuing Operations										1,098	(365)
Income (loss) from discontinued operations										943	457
Net Income (Loss)		$ 458		$ (777)	$ 2,757	$ (543)	$ 41	$ (214)		$ 2,041	$ 92
Basic		$ 0.02		$ (0.03)	$ 0.03	$ 0.04	$ (0.03)	$ 0.00		$ 0.04	$ (0.01)
Diluted		$ 0.02		$ (0.03)	$ 0.03	$ 0.04	$ (0.03)	$ 0.00		$ 0.04	$ (0.01)
Basic		$ 0.00		$ 0.00	$ 0.07	$ (0.06)	$ 0.03	$ 0.00		$ 0.03	$ 0.02
Diluted		$ 0.00		$ 0.00	$ 0.07	$ (0.06)	$ 0.03	$ 0.00		$ 0.03	$ 0.02
Basic		$ 0.02		$ (0.03)	$ 0.10	$ (0.02)	$ 0.00	$ (0.01)		$ 0.07	$ 0.00
Diluted		$ 0.02		$ (0.03)	$ 0.10	$ (0.02)	$ 0.00	$ (0.01)		$ 0.07	$ 0.00