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Earnings Per Share (Shares Not Included In Diluted Earnings Per Share Computation) (Details)
In Thousands
3 Months Ended9 Months Ended
Oct. 08, 2011
Oct. 09, 2010
Oct. 08, 2011
Oct. 09, 2010
Earnings Per Share [Abstract]    
Anti-dilutive shares of common stock01,13002,119