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Stock-Based Compensation (Details Textuals) (USD $)
In Thousands, except Share data
3 Months Ended 6 Months Ended
Jun. 18, 2011
Jun. 19, 2010
Jun. 18, 2011
Jun. 19, 2010
Stock-Based Compensation (Textuals)        
Recognized compensation costs for grants $ 4,095 $ 2,555 $ 7,377 $ 5,110
Income tax benefits for grants $ 1,318 $ 791 $ 2,370 $ 1,557
Weighted-average fair values for options granted     $ 10.45 $ 6.94
Common stock issued in connection with exercise of stock options and new restricted stock grants 147,797 154,658 895,116 1,017,829
Common stock cancelled as result of forfeiture of restricted stock awards 5,563 17,328 9,528 21,081