Note 11 - Earnings Per Share - Reconciliation of Basic and Diluted Loss Per Share (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 29, 2015	Aug. 30, 2014	Aug. 29, 2015	Aug. 30, 2014
Basic earnings per share	$ 4,266	$ 2,256	$ 14,751	$ 5,650
Basic earnings per share (in shares)	10,816,293	10,475,945	10,658,416	10,596,433
Basic earnings per share (in dollars per share)	$ 0.39	$ 0.22	$ 1.38	$ 0.54
Options and restricted shares (in shares)	116,575	135,209	153,787	138,627
Diluted earnings per share	$ 4,266	$ 2,256	$ 14,751	$ 5,650
Diluted earnings per share (in shares)	10,932,868	10,611,154	10,812,203	10,735,060
Diluted earnings per share (in dollars per share)	$ 0.39	$ 0.21	$ 1.36	$ 0.53
Basic earnings per share	$ 4,266	$ 2,256	$ 14,751	$ 5,650
Options and restricted shares (in dollars per share)		$ (0.01)	$ (0.02)	$ (0.01)