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Earnings Per Share (Potentially Dilutive Securities Excluded From Earnings Per Share Calculation) (Details)
3 Months Ended9 Months Ended
Oct. 01, 2011
Oct. 02, 2010
Oct. 01, 2011
Oct. 02, 2010
Earnings Per Share [Abstract]    
Potentially dilutive shares1,851,0001,887,0001,446,0001,893,000