Note 7 - Contingencies (Details) (USD $)	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2012	Aug. 31, 2013	May 26, 2012	Aug. 31, 2013	Aug. 25, 2012	Nov. 24, 2012
Note 7 - Contingencies (Details) [Line Items]
Loss Contingency, Damages Awarded, Value	$ 1,449,000
Amount of Legal Settlement Payments Above Estimated Reserve		251		251
Income from Continued Dumping and Subsidy Offset Act			9,010,000		9,010,000
Operating Leases, Future Minimum Payments Due		98,718,000		98,718,000		72,800,000
Lease Obligations of Licensee Operators [Member]
Note 7 - Contingencies (Details) [Line Items]
Loss Contingency, Estimate of Possible Loss		3,795,000		3,795,000		2,007,000
Colonial Trading [Member]
Note 7 - Contingencies (Details) [Line Items]
Payments for Legal Settlements		$ 1,700
Minimum [Member]
Note 7 - Contingencies (Details) [Line Items]
Lease Guarantees Term				1 year
Maximum [Member]
Note 7 - Contingencies (Details) [Line Items]
Lease Guarantees Term				10 years