Note 10 - Asset Retirement Obligations (Details)	12 Months Ended
	Aug. 29, 2015
Note 10 - Asset Retirement Obligations (Details) [Line Items]
Estimated Impact Of Inflation Per Year	3.00%
Credit Adjusted Risk Free Rates Minimum Rate	7.00%
Credit Adjusted Risk Free Rates Maximum Rate	7.50%
Minimum [Member]
Note 10 - Asset Retirement Obligations (Details) [Line Items]
Asset Retirement Obligation Remaining Lives	6 years
Maximum [Member]
Note 10 - Asset Retirement Obligations (Details) [Line Items]
Asset Retirement Obligation Remaining Lives	29 years