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Note 5 - Unconsolidated Affiliated Companies (Details) - Income from Zenith (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Aug. 31, 2013	Aug. 25, 2012	Aug. 31, 2013	Aug. 25, 2012
Income from Zenith [Abstract]
Equity in income of Zenith	$ 184	$ 23	$ 466	$ 157

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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