Note 4 - Goodwill and Other Intangible Assets (Details) - Changes in Carrying Amount of Goodwill $ in Thousands	6 Months Ended
	May. 30, 2015 USD ($)
Goodwill [Line Items]
Goodwill, balance	$ 1,730
Goodwill, balance	11,589
Zenith Freight Lines [Member]
Goodwill [Line Items]
Goodwill arising from acquisition of Zenith	9,858
Wholesale Segment [Member]
Goodwill [Line Items]
Goodwill, balance	1,129
Goodwill, balance	4,840
Wholesale Segment [Member] | Zenith Freight Lines [Member]
Goodwill [Line Items]
Goodwill arising from acquisition of Zenith	3,711
Retail Segment [Member]
Goodwill [Line Items]
Goodwill, balance	602
Goodwill, balance	1,820
Retail Segment [Member] | Zenith Freight Lines [Member]
Goodwill [Line Items]
Goodwill arising from acquisition of Zenith	1,218
Logistical Services [Member]
Goodwill [Line Items]
Goodwill, balance	4,929
Logistical Services [Member] | Zenith Freight Lines [Member]
Goodwill [Line Items]
Goodwill arising from acquisition of Zenith	$ 4,929