Note 19 - Quarterly Results of Operations (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Nov. 28, 2020	Aug. 29, 2020	May 30, 2020	Nov. 30, 2019	Feb. 23, 2019	Nov. 28, 2020	Nov. 30, 2019	Nov. 24, 2018
Goodwill, Impairment Loss			$ 1,971	$ 1,926		$ 1,971	$ 1,926	$ 0
Asset Impairment Charges, Total			12,184	4,431
Legal Fees			$ 1,050	700		1,050	700	0
Gain (Loss) from Company Owned Life Insurance		$ 914				914	629	266
Gain (Loss) on Termination of Lease	$ 1,161					1,313	(0)	(0)
Early Retirement Program Expense					$ 835	0	835	0
Gain (Loss) on Contract Termination						$ (0)	(149)	(301)
Leasehold Improvements [Member]
Asset Impairment Charges, Total							4,431	469
Gain (Loss) on Contract Termination				$ (149)			$ (149)	$ (301)

Charges related to the early retirement package offered to certain eligible employees.

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Amount of gain (loss) from company owned life insurance.

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

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Amount of gain (loss) on termination of lease before expiration of lease term.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The amount of expense provided in the period for legal costs incurred on or before the balance sheet date pertaining to resolved, pending or threatened litigation, including arbitration and mediation proceedings.

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