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Note 14 - Other Gains and Losses (Details Textual) - USD ($) $ in Thousands	3 Months Ended					12 Months Ended
	Aug. 29, 2020	May 30, 2020	Feb. 29, 2020	Nov. 30, 2019	Feb. 23, 2019	Nov. 28, 2020	Nov. 30, 2019	Nov. 24, 2018
Gain (Loss) on Disposition of Property Plant Equipment, Total						$ 81	$ (515)	$ 234
Proceeds from Sale of Property, Plant, and Equipment, Total			$ 1,639			2,345	$ 1,643	2,689
Early Retirement Program, Benefits Payment Period (Year)							1 year
Early Retirement Program Expense					$ 835	0	$ 835	0
Asset Impairment Charges, Total		$ 12,184		$ 4,431
Gain (Loss) on Contract Termination						(0)	(149)	(301)
Legal Fees		$ 1,050		700		1,050	700	0
Gain (Loss) from Company Owned Life Insurance	$ 914					914	629	266
Underperforming Retail Stores [Member]
Operating Lease, Impairment Loss						6,239
Underperforming Retail Stores [Member]
Asset Impairment Charges, Total						11,114
Closed Custom Upholstery Manufacturing Facility in Grand Prairie, Texas [Member]
Asset Impairment Charges, Total						1,070
Leasehold Improvements [Member]
Asset Impairment Charges, Total							4,431	469
Gain (Loss) on Contract Termination				(149)			(149)	(301)
Other Current Liabilities [Member]
Liability, Other Retirement Benefits				$ 374		0	$ 374
Land and Building occupied by Spring, Texas Retail Store [Member]
Gain (Loss) on Disposition of Property Plant Equipment, Total						$ 1,313
Former Retail Store, Las Vegas, Nevada [Member]
Proceeds from Sale of Property, Plant, and Equipment, Total								2,463
Former Retail Store, Las Vegas, Nevada [Member] \| Selling, General and Administrative Expenses [Member]
Gain (Loss) on Disposition of Property Plant Equipment, Total								$ 165