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Note 5 - Unconsolidated Affiliated Companies (Details) - Income from Zenith (Zenith Freight Lines [Member], Earnings Recognized [Member], USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 01, 2014	Mar. 02, 2013
Zenith Freight Lines [Member] \| Earnings Recognized [Member]
Schedule of Equity Method Investments [Line Items]
Earnings recognized	$ 65	$ 114

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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