Note 8 - Financial Instruments, Investments and Fair Value Measurements (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Nov. 24, 2012	Nov. 26, 2011	Nov. 27, 2010
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments	$ 313
Accumulated Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax		236
Marketable Securities, Realized Gain (Loss), Excluding Other than Temporary Impairments	453	163	2,325
Investment in Fortress		806
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	806
Gain (Loss) on Investments [Member]
Gain Loss Previously Included in Other Comprehensive Income		208
Realized Gains and Losses and Investment Income [Member]
Marketable Securities, Realized Gain (Loss), Excluding Other than Temporary Impairments			$ 2,272

Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period.

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This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period.

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- Definition

The amount of other than temporary impairment (OTTI) losses on equity securities, OTTI related to credit losses on debt securities, and OTTI losses on debt securities when the entity intends to sell the securities or it is more likely than not that the entity will be required to sell the securities before recovery of its amortized cost basis. Additionally, this item includes OTTI losses recognized during the period on investments accounted for under the cost method of accounting.

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