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Incentive Plans and Stock-Based Compensation (Details 1) (Stock Options [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 01, 2012
Aug. 27, 2011
Sep. 01, 2012
Aug. 27, 2011
Stock Options [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Pre-tax compensation expense $ 1,089 $ 967 $ 4,307 $ 3,817
Deferred tax benefits (400) (356) (1,583) (1,403)
Excess tax benefits associated with tax deductions over the amount of compensation expense recognized in the consolidated condensed financial statements 119 297 2,606 2,338
Fair value of stock options on date of grant 0 27 6,407 5,803
Total intrinsic value of stock options exercised 614 885 8,360 7,443
Cash received upon exercise of stock options 1,218 772 4,469 6,009
Tax benefit realized from exercise of stock options, net 113 297 2,594 2,332
Addition to capital in excess of par value due to exercise of stock options 1,293 1,033 5,352 7,027
Unrecognized compensation cost related to share-based arrangements which the Company expects to recognize $ 5,765   $ 5,765  
Weighted-average period in years, over which the Company expects to recognize compensation cost related to share-based arrangements     2 years 6 months 26 days  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract]        
Weighted average fair value per option at the date of grant for option granted     $ 12.49 $ 11.73
Risk-free interest rate     1.38% 2.52%
Expected dividend yield     0.96% 0.97%
Expected volatility factor     26.52% 25.54%
Expected option term in years     6 years 1 month 6 days 6 years 4 months 24 days