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Incentive Plans and Stock-Based Compensation (Details 5) (Restricted Stock Units (RSUs) [Member], USD $)
12 Months Ended 3 Months Ended
Dec. 01, 2012
Dec. 03, 2011
Nov. 27, 2010
Mar. 02, 2013
Issuance of Stock Based Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]        
Nonvested at beginning of year 71,545 70,894 67,476  
Granted 29,839 29,467 34,128 23,624
Vested (60,320) (26,937) (28,898)  
Surrendered (1,119) (1,879) (1,812)  
Nonvested at end of period 39,945 71,545 70,894  
Weighted Average Grant Date Fair Value - Restricted Stock Unit Awards [Roll Forward]        
Weighted Average Grant Date Fair Value - Beginning of Year $ 36.95 $ 33.23 $ 34.01  
Weighted Average Grant Date Fair Value - Granted $ 49.91 $ 42.86 $ 32.30 $ 45.19
Weighted Average Grant Date Fair Value - Vested $ 39.11 $ 33.61 $ 34.01  
Weighted Average Grant Date Fair Value - Surrendered $ 44.15 $ 37.18 $ 32.30  
Weighted Average Grant Date Fair Value - End of Year $ 43.16 $ 36.95 $ 33.23