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Note 14 - Financial Instruments and Fair Value Measurements (Detail) - Fair values of our marketable securities (USD $) In Thousands, unless otherwise specified	Aug. 25, 2012	Nov. 26, 2011
Assets
Marketable securities	$ 3,206	$ 3,745
Total Assets	3,206
Fair Value, Inputs, Level 1 [Member]
Assets
Marketable securities	3,206
Total Assets	3,206
Fair Value, Inputs, Level 2 [Member]
Assets
Marketable securities	0
Total Assets	0
Fair Value, Inputs, Level 3 [Member]
Assets
Marketable securities	0
Total Assets	$ 0

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents investment securities as of the balance sheet date which may include marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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