Note 6 - Income Taxes (Details) (USD $)	12 Months Ended
	Aug. 28, 2013	Aug. 29, 2012	Aug. 31, 2011	Aug. 25, 2010	Aug. 26, 2009
Note 6 - Income Taxes (Details) [Line Items]
Taxable Income	$ 2,700,000
Operating Loss Carryforwards	1,900,000		10,300,000	600,000
Tax Credit Carryforward, Amount	7,400,000			5,600,000
Income Tax Expense (Benefit)	1,839,000	1,706,000	548,000
Number of States in which Entity Operates					5
Deferred Tax Assets, Gross	12,300,000
Deferred Tax Assets, Operating Loss Carryforwards	8,300,000
Tax Credit Carryforward, Valuation Allowance	0	0	2,600,000	3,100,000
Federal Income Taxes Paid Net	0	0	0	0
State Income Taxes Paid Net	500,000	500,000	0.5	500,000
Unrecognized Tax Benefits Interest And Penalties	500,000
After NOL Carryback [Member]
Note 6 - Income Taxes (Details) [Line Items]
Income Tax Expense (Benefit)		0
State and Local Jurisdiction [Member]
Note 6 - Income Taxes (Details) [Line Items]
Income Tax Examination, Liability (Refund) Adjustment from Settlement with Taxing Authority	33,000
Foreign Tax Credits [Member]
Note 6 - Income Taxes (Details) [Line Items]
Tax Credit Carryforward, Amount	$ 200,000