Note 11 - Earnings Per Share - Reconciliation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Feb. 26, 2022	Feb. 27, 2021
Basic earnings per share - continuing operations	$ 4,291	$ 3,698
Basic earnings per share - continuing operations (in shares)	9,750,432	9,919,518
Basic earnings per share - continuing operations (in dollars per share)	$ 0.44	$ 0.37
Restricted shares, weighted average shares (in shares)	8,545	20,287
Diluted earnings per share - continuing operations	$ 4,291	$ 3,698
Diluted earnings per share - continuing operations (in shares)	9,758,977	9,939,805
Diluted earnings per share - continuing operations (in dollars per share)	$ 0.44	$ 0.37
Basic earnings per share - discontinued operations	$ 1,282	$ 313
Basic earnings per share - discontinued operations (in dollars per share)	$ 0.13	$ 0.03
Diluted earnings per share - discontinued operations	$ 1,282	$ 313
Diluted earnings per share - discontinued operations (in dollars per share)	$ 0.13	$ 0.03
Basic earnings per share - continuing operations	$ 4,291	$ 3,698
Discontinued Operations [Member]
Basic earnings per share - continuing operations (in shares)	9,750,432	9,919,518
Restricted shares, weighted average shares (in shares)	8,545	20,287
Diluted earnings per share - continuing operations (in shares)	9,758,977	9,939,805