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Note 3 - Accounting for Share-based Compensation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
May 28, 2016
May 30, 2015
May 28, 2016
May 30, 2015
Employee Stock Option [Member]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options $ 9,697   $ 9,697  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     1 year 146 days  
Restricted Stock [Member]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options 315   $ 315  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     219 days  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value 179 $ 64 $ 6,012 $ 6,064
Restricted Stock Units (RSUs) [Member]        
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Stock Options 10,257   $ 10,257  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     1 year 182 days  
Employees [Member]        
Deferred Compensation Plan, Matching Percentage     10.00%  
Allocated Share-based Compensation Expense 2,701 3,058 $ 6,968 7,319
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options 933 513 592 910
Fair Value Options Granted During Period Value Share-based Compensation 324 9 6,462 7,189
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value 7,265 2,223 7,276 3,549
Proceeds from Issuance of Shares under Incentive and Share-based Compensation Plans, Including Stock Options 7,051 $ 2,267 7,083 $ 3,951
Total Fair Value of Nonvested Restricted Stock $ 13,994   $ 13,994  
Repurchased Restricted Stock Shares 1,106 86 67,553 54,003