Note 8 - Changes in Carrying Amount of Goodwill (Details)	12 Months Ended
	Nov. 28, 2015 USD ($)
Wholesale Segment [Member]
Balance as of November 29, 2014	$ 1,128,000
Goodwill arising from acquisition of Zenith	3,711,000
Balance as of November 28, 2015	4,839,000
Retail Segment [Member]
Balance as of November 29, 2014	602,000
Goodwill arising from acquisition of Zenith	1,218,000
Balance as of November 28, 2015	$ 1,820,000
Logistical Services [Member]
Balance as of November 29, 2014
Goodwill arising from acquisition of Zenith	$ 4,929,000
Balance as of November 28, 2015	4,929,000
Balance as of November 29, 2014	1,730,000
Goodwill arising from acquisition of Zenith	9,858,000
Balance as of November 28, 2015	$ 11,588,000