Note 12 - Earnings Per Share - Reconciliation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 02, 2019	Feb. 24, 2018
Basic earnings (loss) per share, net income (loss)	$ 608	$ (913)
Basic earnings (loss) per share, weighted average shares (in shares)	10,454,348	10,686,477
Basic earnings (loss) per share (in dollars per share)	$ 0.06	$ (0.09)
Options and restricted shares
Options and restricted shares, weighted average shares (in shares)	28,893
Options and restricted shares, net income per share (in dollars per share)
Diluted earnings (loss) per share, net income (loss)	$ 608	$ (913)
Diluted earnings (loss) per share, weighted average shares (in shares)	10,483,241	10,686,477
Diluted earnings (loss) per share (in dollars per share)	$ 0.06	$ (0.09)