Note 1 - Nature of Operations and Significant Accounting Policies (Details) - Previously Reported Accounting Errors in Consolidated Balance Sheet (USD $) In Thousands, unless otherwise specified	Aug. 27, 2014	Aug. 28, 2013	Aug. 23, 2013	Aug. 29, 2012	Aug. 31, 2011	Sep. 01, 2010	Aug. 28, 2013 Accounting Error [Member] Scenario, Previously Reported [Member]	Aug. 29, 2012 Accounting Error [Member] Scenario, Previously Reported [Member]	Aug. 28, 2013 Accounting Error [Member] Scenario, Reclassifications [Member]		Aug. 29, 2012 Accounting Error [Member] Scenario, Reclassifications [Member]		Aug. 28, 2013 Accounting Error [Member] Scenario, Adjustment [Member]	Aug. 29, 2012 Accounting Error [Member] Scenario, Adjustment [Member]	Aug. 28, 2013 Accounting Error [Member] Revised [Member]	Aug. 29, 2012 Accounting Error [Member] Revised [Member]	Aug. 25, 2010 Scenario, Previously Reported [Member]
Current Assets:
Cash and cash equivalents	$ 2,788	$ 1,528		$ 1,223	$ 1,252		$ 1,528	$ 1,223		[1]					$ 1,528	$ 1,223
Trade accounts and other receivables, net	4,112	4,083					4,083	4,000		[1]					4,083	4,000
Food and supply inventories	5,556	4,908					5,026	3,561	(118)	[1]					4,908	3,561
Prepaid expenses							3,183	3,010	(57)	[1]	11	[1]	141	(262)	3,267	2,759
Assets related to discontinued operations	52	196					21	40	175	[1]	(11)	[1]			196	29
Deferred income taxes	(1,576)	(2,914)					1,436	1,932		[1]		[1]	199	135	1,635	2,067
Total current assets	15,910	15,617					15,277	13,766		[1]		[1]	340	(127)	15,617	13,639
Property held for sale	991	449		602		1,046	449	602		[1]		[1]			449	602
Assets related to discontinued operations	4,204	4,218					4,189	4,824	29	[1]	20	[1]			4,218	4,844
Property and equipment, net	213,492	190,497					190,519	173,653	(22)	[1]	(20)	[1]			190,497	173,633
Intangible assets, net	24,014	25,517					25,517	26,679		[1]		[1]			25,517	26,679
Goodwill	1,681	2,169	2,200				2,169	195		[1]		[1]			2,169	195
Deferred income taxes	11,294	7,923					7,923	9,354		[1]		[1]			7,923	9,354
Other assets	3,849	4,255					4,262	1,944	(7)	[1]					4,255	1,944
Total assets	275,435	250,645					250,305	231,017		[1]		[1]	340	(127)	250,645	230,890
Current Liabilities:
Accounts payable	26,269	23,655					23,655	14,849		[1]	1	[1]			23,655	14,850
Liabilities related to discontinued operations	590	527					440	411	87	[1]	2	[1]			527	413
Accrued expenses and other liabilities	23,107	21,817					21,178	20,677	(87)	[1]	(2)		726	135	21,817	20,810
Total current liabilities	49,966	45,999					45,273	35,937		[1]	1	[1]	726	135	45,999	36,073
Credit facility debt	42,000	19,200					19,200	13,000		[1]		[1]			19,200	13,000
Liabilities related to discontinued operations	278	448					304	1,133	144	[1]	(78)	[1]			448	1,055
Other liabilities	8,167	7,865					8,010	8,288	(145)	[1]	77	[1]			7,865	8,364
Total liabilities	100,411	73,512					72,787	58,358	(1)	[1]			726	135	73,512	58,492
SHAREHOLDER'S EQUITY
Common Stock	9,264	9,217					9,217	9,176		[1]		[1]			9,217	9,176
Paid-in capital	27,356	26,065					26,065	24,532		[1]		[1]			26,065	24,532
Retained earnings	143,179	146,626					147,011	143,726	1	[1]		[1]	(386)	(262)	146,626	143,465
Less cost of treasury stock	(4,775)	(4,775)					(4,775)	(4,775)		[1]		[1]			(4,775)	(4,775)
Total shareholders' equity	175,024	177,133		172,398	164,877		177,518	172,659	1	[1]		[1]	(386)	(262)	177,133	172,398	165,037
Total liabilities and shareholders' equity	$ 275,435	$ 250,645					$ 250,305	$ 231,017		[1]		[1]	$ 340	$ (127)	$ 250,645	$ 230,890

[1] The results of operations, assets and liabilities for all units included in the Company's disposal plans discussed in Note 11 have been reclassified to discontinued operations in the statements of operations and balance sheets for all periods presented. Some table rows may not sum due to rounding.