Note 12 - Capital Stock and Stock Compensation - Changes in Outstanding Options (Details) - USD ($) $ in Thousands				12 Months Ended
Nov. 26, 2022	Nov. 27, 2021	Nov. 28, 2020	Nov. 26, 2022	Nov. 27, 2021	Nov. 28, 2020
Total intrinsic value of options exercised	$ 0	$ 93	$ 0
Proceeds from exercise of stock options		42	0	$ 0	$ 42	$ 0
Excess tax benefits recognized in income tax expense upon the exercise of options				$ (115)	$ (115)	$ (114)
Share-Based Payment Arrangement, Option [Member]
Excess tax benefits recognized in income tax expense upon the exercise of options	$ 0	$ 18	$ 0

Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to excess tax benefit for share-based compensation cost.

No definition available.

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- Definition

Amount of cash inflow from exercise of option under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2A
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=SL79508275-113901

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3255-108585

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(2)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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