Note 4 - Goodwill and Other Intangible Assets - Changes in Carrying Amount of Goodwill (Details) - USD ($)	9 Months Ended
	Aug. 29, 2015	Nov. 29, 2014
Wholesale Segment [Member]
Goodwill	$ 4,840,000	$ 1,129,000
Goodwill arising from acquisition of Zenith	3,711,000
Retail Segment [Member]
Goodwill	1,820,000	$ 602,000
Goodwill arising from acquisition of Zenith	1,218,000
Logistical Services [Member]
Goodwill	4,928,000
Goodwill arising from acquisition of Zenith	4,928,000
Goodwill	11,588,000	$ 1,731,000
Goodwill arising from acquisition of Zenith	$ 9,857,000