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Earnings Per Share (Schedule Of Anti-Dilutive Stock Options) (Details)
3 Months Ended9 Months Ended
Sep. 30, 2011
Sep. 30, 2010
Sep. 30, 2011
Sep. 30, 2010
Earnings Per Share [Abstract]    
Anti-dilutive stock options not included above132,750199,82622,322144,756