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Note 15 - Other Gains and Losses (Details Textual) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Aug. 26, 2017	Aug. 27, 2016	Nov. 25, 2017	Nov. 26, 2016	Nov. 28, 2015
Gain (Loss) on Disposition of Property Plant Equipment			$ 1,190	$ 128	$ (334)
Proceeds from Sale of Property, Plant, and Equipment			4,474	667	2,981
Litigation Settlement, Amount Awarded from Other Party		$ 1,428		1,428
Asset Impairment Charges					106
Gain (Loss) on Contract Termination					(419)
Restructuring Charges					449
Employee Severance [Member]
Restructuring Charges			0	0	449
Leasehold Improvements [Member]
Asset Impairment Charges			0	0	106
Gain (Loss) on Contract Termination					$ (419)
Antitrust Litigation Settlement [Member]
Proceeds from Legal Settlements				$ 1,428
Former Retail Store, Las Vegas, Nevada [Member]
Gain (Loss) on Disposition of Property Plant Equipment	$ 1,220
Proceeds from Sale of Property, Plant, and Equipment			4,335
Selling, General and Administrative Expenses [Member] \| Former Retail Store, Las Vegas, Nevada [Member]
Gain (Loss) on Disposition of Property Plant Equipment			$ 1,220