Note 12 - Earnings Per Share - Reconciliation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Feb. 29, 2020	Mar. 02, 2019
Basic earnings per share, net income	$ 1,210	$ 608
Basic earnings per share, weighted average shares (in shares)	10,027,227	10,454,348
Basic earnings per share (in dollars per share)	$ 0.12	$ 0.06
Options and restricted shares, net income	$ 0	$ 0
Options and restricted shares, weighted average shares (in shares)	25,969	28,893
Diluted earnings per share, net income	$ 1,210	$ 608
Diluted earnings per share, weighted average shares (in shares)	10,053,196	10,483,241
Diluted earnings per share (in dollars per share)	$ 0.12	$ 0.06