Note 17 - Earnings (Loss) Per Share - Reconciliation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Nov. 25, 2023	Nov. 26, 2022	Nov. 27, 2021
Net income (loss) from continuing operations		$ (3,171)	$ 25,360	$ 16,921
Denominator for basic income per share - weighted average shares (in shares)		8,784,759	9,394,873	9,835,829
Effect of dilutive securities* (in shares)	[1]	0	8,107	7,945
Denominator for diluted income per share — weighted average shares and assumed conversions (in shares)		8,784,759	9,402,980	9,843,774
Basic income (loss) per share - continuing operations: (in dollars per share)		$ (0.36)	$ 2.7	$ 1.72
Diluted income (loss) per share - continuing operations (in dollars per share)		$ (0.36)	$ 2.7	$ 1.72
Net income from discontinued operations		$ 0	$ 39,985	$ 1,121
Denominator for basic income per share - weighted average shares (in shares)		8,784,759	9,394,873	9,835,829
Effect of dilutive securities* (in shares)	[1]	0	8,107	0
Denominator for diluted income per share — weighted average shares and assumed conversions (in shares)		8,784,759	9,402,980	9,835,829
Basic income per share - discontinued operations (in dollars per share)		$ 0	$ 4.26	$ 0.11
Diluted income per share - discontinued operations (in dollars per share)		$ 0	$ 4.26	$ 0.11

[1] Due to the net loss in 2023, the potentially dilutive securities would have been anti-dilutive and are therefore excluded.