Note 18 - Quarterly Financial Information (Details) - Summary of Quarterly Unaudited Financial Information (USD $) In Thousands, except Per Share data, 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
Summary of Quarterly Unaudited Financial Information [Abstract]
Restaurant sales (c)	$ 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
Franchise revenue	1,684		1,545		1,514		1,640		1,539		1,522		2,284		2,235
Culinary contract services	4,534		3,979		4,270		4,099		3,667		3,841		5,772		5,086		18,555	16,693	17,711
Total sales	96,359		88,569		85,848		95,410		86,064		79,454		123,605		123,268		394,381	384,196	350,097
Income from continuing operations (b) (c)	1,742	[1],[2]	(1,581)	[1],[2]	(693)	[1],[2]	2,624	[1],[2]	663	[1],[2]	174	[1],[2]	(1,081)	[1],[2]	1,086	[1],[2]	(1,613)	4,547	7,398
Discontinued operations (c)	(12)	[1]	(603)	[1]	(853)	[1]	(163)	[1]	(482)	[1]	(84)	[1]	(366)	[1]	(657)	[1]
Net income (loss)	$ 1,730		$ (2,184)		$ (1,546)		$ 2,461		$ 181		$ 90		$ (1,447)		$ 429		$ (3,447)	$ 3,161	$ 6,753
Net income (loss) per share:
Basic (in Dollars per share)	$ 0.06		$ (0.08)		$ (0.05)		$ 0.09		$ 0.01		$ 0.01		$ (0.06)		$ 0.01		$ (0.12)	$ 0.11	$ 0.24
Assuming dilution (in Dollars per share)	$ 0.06		$ (0.08)		$ (0.05)		$ 0.09		$ 0.01		$ 0.01		$ (0.06)		$ 0.01		$ (0.12)	$ 0.11	$ 0.24
Cost of food	28.60%		29.00%		28.60%		28.60%		28.90%		28.20%		29.10%		28.80%
Payroll and related costs	33.30%		35.30%		35.20%		33.50%		35.60%		35.20%		35.00%		33.80%
Other operating expenses	17.70%		18.60%		18.90%		17.30%		17.10%		18.00%		19.30%		19.20%
Occupancy costs	5.40%		5.80%		5.90%		5.50%		6.00%		5.50%		5.80%		6.30%

[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.

[2] The first quarter encompasses the typical start of school and second quarter includes Christmas and Thanksgiving holidays.