Note 5 - Unconsolidated Affiliated Companies (Tables) (Zenith Freight Lines [Member])

9 Months Ended

Aug. 31, 2013

Zenith Freight Lines [Member]

Note 5 - Unconsolidated Affiliated Companies (Tables) [Line Items]

Equity Method Investments [Table Text Block]

	Quarter Ended				Nine Months Ended
	August 30, 2014		August 31, 2013		August 30, 2014		August 31, 2013
Earnings recognized	$	190	$	184	$	534	$	466