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Note 15 - Other Gains and Losses (Details Textual) - USD ($) $ in Thousands	3 Months Ended				12 Months Ended
	Nov. 30, 2019	Feb. 23, 2019	Nov. 24, 2018	May 26, 2018	Nov. 30, 2019	Nov. 24, 2018	Nov. 25, 2017
Gain (Loss) on Disposition of Property Plant Equipment, Total					$ (515)	$ 234	$ 1,190
Proceeds from Sale of Property, Plant, and Equipment, Total					$ 1,643	2,689	4,474
Early Retirement Program, Benefits Payment Period					1 year
Early Retirement Program Expense		$ 835			$ 835	0	0
Gain (Loss) on Contract Termination					(149)	(301)	(0)
Legal Fees	$ 700				700	0	0
Leasehold Improvements [Member]
Asset Impairment Charges, Total	4,431		$ 469		4,431	469	0
Gain (Loss) on Contract Termination	(149)		$ 301		149	301
Other Current Liabilities [Member]
Liability, Other Retirement Benefits	$ 374				$ 374
Land and Building occupied by Spring, Texas Retail Store [Member]
Gain (Loss) on Disposition of Property Plant Equipment, Total				$ 165		165
Proceeds from Sale of Property, Plant, and Equipment, Total						$ 2,463
Former Retail Store, Las Vegas, Nevada [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total							4,335
Former Retail Store, Las Vegas, Nevada [Member] \| Selling, General and Administrative Expenses [Member]
Gain (Loss) on Disposition of Property Plant Equipment, Total							$ 1,220