Note 3 - Business Combination - Acquisition of Zenith - Revenue and Pre-tax Profit included in Condensed Consolidated Statements of Income (Details) - Zenith Freight Lines [Member] - USD ($) $ in Thousands		12 Months Ended
		Nov. 26, 2016	Nov. 28, 2015	[2]
Zenith revenue (2)	[1]	$ 54,842	$ 43,522
Zenith pre-tax income		$ 3,313	$ 3,379

[1] Net of eliminated inter - company transactions, See Note 20.

[2] From date of acquisition, February 2, 2015.