Note 18 - Quarterly Financial Information (Details) - Summary of Quarterly Unaudited Financial Information (USD $)	3 Months Ended												4 Months Ended				12 Months Ended
	May 08, 2013		Feb. 13, 2013		Nov. 21, 2012		May 09, 2012		Feb. 15, 2012		Nov. 23, 2011		Aug. 31, 2013		Aug. 29, 2012		Aug. 28, 2013		Aug. 29, 2012		Aug. 31, 2011
Summary of Quarterly Unaudited Financial Information [Abstract]
Restaurant sales	$ 91,736,000	[1]	$ 82,271,000	[1]	$ 74,090,000	[1]	$ 78,091,000	[1]	$ 73,565,000	[1]	$ 73,307,000	[1]	$ 118,623,000	[1]	$ 100,194,000	[1]	$ 366,155,000		$ 324,536,000		$ 325,383,000
Franchise revenue	1,639,000	[1]	1,540,000	[1]	1,522,000	[1]	1,702,000	[1]	1,653,000	[1]	1,482,000	[1]	2,235,000	[1]	2,394,000	[1]
Culinary contract services	4,099,000	[1]	3,667,000	[1]	3,841,000	[1]	4,336,000	[1]	4,197,000	[1]	4,536,000	[1]	5,086,000	[1]	4,642,000	[1]	16,693,000		17,711,000		15,619,000
Total sales	97,474,000	[1]	87,477,000	[1]	79,453,000	[1]	84,129,000	[1]	79,415,000	[1]	79,325,000	[1]	125,944,000	[1]	107,230,000	[1]	390,350,000		350,097,000		348,748,000
Income from continuing operations (b)	2,612,000	[1],[2]	603,000	[1],[2]	217,000	[1],[2]	2,499,000	[1],[2]	1,357,000	[1],[2]	571,000	[1],[2]	790,000	[1],[2]	3,187,000	[1],[2]	4,222,000		7,613,000		2,800,000
Discontinued operations	(118,000)	[1]	(400,000)	[1]	(88,000)	[1]	(77,000)	[1]	(269,000)	[1]	(367,000)	[1]	(331,000)	[1]	(46,000)	[1]
Net income	2,494,000	[1]	203,000	[1]	129,000	[1]	2,423,000	[1]	1,088,000	[1]	204,000	[1]	459,000	[1]	3,141,000	[1]	3,285,000		6,854,000		2,965,000
Net income per share:
Basic (in Dollars per share)	$ 0.09	[1]	$ 0.01	[1]	$ 0.01	[1]	$ 0.09	[1]	$ 0.04	[1]	$ 0.01	[1]	$ 0.02	[1]	$ 0.11	[1]	$ 0.11		$ 0.24		$ 0.10
Assuming dilution (in Dollars per share)	$ 0.09	[1]	$ 0.01	[1]	$ 0.01	[1]	$ 0.09	[1]	$ 0.04	[1]	$ 0.01	[1]	$ 0.02	[1]	$ 0.11	[1]	$ 0.11	[3]	$ 0.24	[3]	$ 0.10	[3]
Cost of food	0.286	[1]	0.289	[1]	0.282	[1]	0.274	[1]	0.283	[1]	0.280	[1]	0.288	[1]	0.278	[1]	104,993,000		90,416,000		94,166,000
Payroll and related costs	0.331	[1]	0.351	[1]	0.345	[1]	0.330	[1]	0.346	[1]	0.343	[1]	0.340	[1]	0.345	[1]	126,306,000		112,028,000		115,119,000
Other operating expenses	0.175	[1]	0.173	[1]	0.181	[1]	0.165	[1]	0.158	[1]	0.175	[1]	0.193	[1]	0.170	[1]	66,381,000		54,233,000		56,830,000
Occupancy costs	$ 0.056	[1]	$ 0.060	[1]	$ 0.055	[1]	$ 0.053	[1]	$ 0.056	[1]	$ 0.057	[1]	$ 0.063	[1]	$ 0.055	[1]	$ 21,537,000		$ 17,985,000		$ 18,090,000

[1] The quarters ended August 28, 2013 and August 29, 2012 consists of four four-week periods. All other quarters presented represent three four-week periods.

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

[3] Potentially dilutive shares not included in the computation of net income per share because to do so would have been antidilutive amounted to zero shares in fiscal year 2013, fiscal year 2012 and fiscal year 2011. Additionally, stock options with exercise prices exceeding market close prices that were excluded from the computation of net income per share amounted to 67,000 shares in fiscal year 2013, 373,020 shares in fiscal year 2012 and 1,043,000 shares in fiscal year 2011.