Note 11 - Earnings (Loss) Per Share - Reconciliation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			9 Months Ended
	Aug. 31, 2024		Aug. 26, 2023	Aug. 31, 2024		Aug. 26, 2023
Basic loss per share - continuing operations, Net Income	$ (4,505)		$ (2,591)	$ (12,899)		$ 930
Basic loss per share - continuing operations, Weighted Average Shares (in shares)	8,725,008		8,736,096	8,742,766		8,804,718
Basic loss per share - continuing operations, Net Income Per Share (in dollars per share)	$ (0.52)		$ (0.3)	$ (1.48)		$ 0.11
Options and restricted shares, Weighted Average Shares (in shares)	0	[1]	0	0	[1]	15,934
Diluted loss per share - continuing operations, Net Income	$ (4,505)		$ (2,591)	$ (12,899)		$ 930
Diluted loss per share - continuing operations, Weighted Average Shares (in shares)	8,725,008		8,736,096	8,742,766		8,820,652
Diluted loss per share - continuing operations, Net Income Per Share (in dollars per share)	$ (0.52)		$ (0.3)	$ (1.48)		$ 0.11

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