Note 3 - Reportable Segments (Details) - Financial Information as Required by ASC 280 for Segment Reporting (USD $) In Thousands, unless otherwise specified	3 Months Ended												4 Months Ended				12 Months Ended
	May 07, 2014		Feb. 12, 2014		Nov. 20, 2013		May 08, 2013		Feb. 13, 2013		Nov. 21, 2012		Aug. 27, 2014		Aug. 28, 2013		Aug. 27, 2014	Aug. 28, 2013	Aug. 29, 2012
Sales:
Sales	$ 90,141	[1]	$ 83,045	[1]	$ 80,064	[1]	$ 89,671	[1]	$ 80,858	[1]	$ 74,091	[1]	$ 115,549	[1]	$ 115,947	[1]	$ 368,267	$ 360,001	$ 324,536
Segment level profit:
Segment Level Profit	96,359		88,569		85,848		95,410		86,064		79,454		123,605		123,268		394,381	384,196	350,097
Depreciation and amortization:
Depreciation and Amortization																	20,221	18,571	17,974
Total assets:
Total Assets													275,435		250,645		275,435	250,645
Income (loss) before income taxes and discontinued operations:
Income (loss) before income taxes and discontinued operations																	(3,273)	6,322	9,052
Segment Level Profit Total [Member]
Income (loss) before income taxes and discontinued operations:
Income (loss) before income taxes and discontinued operations																	54,248	56,458
Opening Costs [Member]
Income (loss) before income taxes and discontinued operations:
Income (loss) before income taxes and discontinued operations																	(2,164)	(783)
Depreciation and Amortization Total [Member]
Income (loss) before income taxes and discontinued operations:
Income (loss) before income taxes and discontinued operations																	(20,062)	(18,376)
General and Administrative Expense [Member]
Income (loss) before income taxes and discontinued operations:
Income (loss) before income taxes and discontinued operations																	(35,038)	(32,217)
Provision For Asset Impairments, Net [Member]
Income (loss) before income taxes and discontinued operations:
Income (loss) before income taxes and discontinued operations																	(2,498)	(615)
Net Gain (Loss) on Disposition of Property and Equipment [Member]
Income (loss) before income taxes and discontinued operations:
Income (loss) before income taxes and discontinued operations																	2,357	1,723
Interest Income [Member]
Income (loss) before income taxes and discontinued operations:
Income (loss) before income taxes and discontinued operations																	6	9
Interest Expense [Member]
Income (loss) before income taxes and discontinued operations:
Income (loss) before income taxes and discontinued operations																	(1,247)	(920)
Other Income [Member]
Income (loss) before income taxes and discontinued operations:
Income (loss) before income taxes and discontinued operations																	1,125	1,043
Company Owned Restaurants [Member]
Sales:
Sales																	368,799	360,566
Segment level profit:
Segment Level Profit																	44,843	47,702
Depreciation and amortization:
Depreciation and Amortization																	17,357	16,417
Total assets:
Total Assets													220,793		203,850		220,793	203,850
Capital expenditures:
Capital Expenditures																	43,075	30,741
Culinary Contract Services [Member]
Sales:
Sales																	18,555	16,693
Segment level profit:
Segment Level Profit																	2,378	1,819
Depreciation and amortization:
Depreciation and Amortization																	409	440
Total assets:
Total Assets													2,724		3,547		2,724	3,547
Capital expenditures:
Capital Expenditures																	64	95
Franchise [Member]
Sales:
Sales																	7,027	6,937
Segment level profit:
Segment Level Profit																	7,027	6,937
Depreciation and amortization:
Depreciation and Amortization																	767	767
Total assets:
Total Assets													13,906		14,674		13,906	14,674
Segment Sales Total [Member]
Sales:
Sales																	394,381	384,196
Segment Level Profit Total [Member]
Segment level profit:
Segment Level Profit																	54,248	56,458
Corporate Segment [Member]
Depreciation and amortization:
Depreciation and Amortization																	1,529	752
Total assets:
Total Assets													38,012		28,574		38,012	28,574
Capital expenditures:
Capital Expenditures																	3,045	503
Depreciation and Amortization Total [Member]
Depreciation and amortization:
Depreciation and Amortization																	20,062	18,376
Total Assets [Member]
Total assets:
Total Assets													275,435		250,645		275,435	250,645
Capital Expenditures Total [Member]
Capital expenditures:
Capital Expenditures																	$ 46,184	$ 31,339

[1] In the second quarter of fiscal 2014, we identified and corrected immaterial accounting errors in prepaid assets and payroll related liabilities. The Company did not expense amounts related to these accounts properly in the appropriate prior periods. The errors impacted all prior reporting periods beginning in 2007. Based on management's analysis of the error as required by guidance in ASC 250-10 relating to SEC Staff Accounting Bulletin ("SAB") Topic1.M, Assessing Materiality and SAB Topic 1.N, Considering the Effects of Prior Year Misstatements when Quantifying Misstatements in Current Year Financial Statements, Income from continuing operations for quarter one of fiscal year 2014 and quarters one through four of fiscal year 2013 have been revised. See Note 1. Nature of Operations and Significant Accounting Policies. In addition, Restaurant sales, Income from continuing operations and Discontinued operations were revised to reflect the Company's disposal plans discussed in Note 8.