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Note 7 - Financial Instruments, Investments and Fair Value Measurements (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 12 Months Ended
Nov. 24, 2012
Nov. 26, 2011
Nov. 30, 2013
Nov. 26, 2011
Gain (Loss) on Investments
Nov. 30, 2013
Minimum [Member]
Nov. 30, 2013
Maximum [Member]
Nov. 30, 2013
Weighted Average [Member]
Note 7 - Financial Instruments, Investments and Fair Value Measurements (Details) [Line Items]              
Maturity of Time Deposits         6 months 12 months 5 months
Weighted Average Rate Domestic Deposit, Certificates of Deposit     0.224%   0.12% 1.00%  
Marketable Securities, Gain (Loss), Excluding Other than Temporary Impairments $ 313            
Marketable Securities, Realized Gain (Loss), Excluding Other than Temporary Impairments 453 163          
Gain Loss Previously Included in Other Comprehensive Income       208      
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net $ 806