Note 19 - Earnings Per Share - Reconciliation of Basic and Diluted Loss Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended													12 Months Ended
	Nov. 26, 2016	[1]	Aug. 27, 2016	[2]	May 28, 2016	Feb. 27, 2016	Nov. 28, 2015	[3]	Aug. 29, 2015	May 30, 2015	[4]	Feb. 28, 2015	[5]	Nov. 26, 2016	Nov. 28, 2015	Nov. 29, 2014
Numerator:
Net income	$ 5,045		$ 4,165		$ 3,385	$ 3,234	$ 5,682		$ 4,266	$ 4,529		$ 5,956		$ 15,829	$ 20,433	$ 9,299
Denominator:
Denominator for basic income per share - weighted average shares (in shares)														10,732,217	10,701,829	10,552,462
Effect of dilutive securities (in shares)														130,204	141,198	140,569
Denominator for diluted income per share — weighted average shares and assumed conversions (in shares)														10,862,421	10,843,027	10,693,031
Basic income per share:
Net income per share — basic (in dollars per share)	$ 0.47		$ 0.39		$ 0.31	$ 0.30	$ 0.53		$ 0.39	$ 0.42		$ 0.57		$ 1.47	$ 1.91	$ 0.88
Diluted income per share:
Net income per share — diluted (in dollars per share)	$ 0.47		$ 0.38		$ 0.31	$ 0.30	$ 0.52		$ 0.39	$ 0.42		$ 0.56		$ 1.46	$ 1.88	$ 0.87

[1] Net income includes income of $148 from the CDSOA, net of related income tax effects of approximately $92 (see Note 16).

[2] Income from operations includes the benefit of a $1,428 award received from the settlement of class action litigation (see Note 15).

[3] Net income includes the effect of a $1,111 tax benefit arising from purchase accounting adjustments relating to the gain recorded on the remeasurement of our prior ownership in Zenith.

[4] Income from operations includes management restructuring charges of $449 (see Note 15). Net income includes income of $1,066 from the CDSOA, net of related income tax effects of approximately $410 (see Note 16).

[5] Income from operations includes asset impairment charges and lease exit costs totaling $525 (see Note 15). Net income includes a gain of $7,212, net of income tax effects of approximately $2,777, resulting from the remeasurement of our prior ownership interest in Zenith upon acquisition (see Note 3).