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Stock-Based Compensation Plans (Schedule Of Stock Option Activity) (Details) (USD $)
 12 Months Ended
Dec. 31, 2011
Stock-Based Compensation Plans [Abstract]  
Shares, Outstanding at January 1, 2011 110,900
Weighted Average Exercise Price, Outstanding at January 1, 2011 $ 1.79
Shares, Options exercised (57,300)
Weighted Average Exercise Price, Options exercised $ 1.50
Shares, Outstanding at December 31, 2011 53,600
Weighted Average Exercise Price, Outstanding at December 31, 2011 $ 2.09
Weighted Average Remaining Contractual Life, Outstanding at December 31, 2011 (years) 1.29
Aggregate Intrinsic Value, Outstanding at December 31, 2011 $ 1,625,995
Shares, Exercisable at December 31, 2011 53,600
Weighted Average Exercise Price, Exercisable at December 31, 2011 $ 2.09
Weighted Average Remaining Contractual Life, Exercisable at December 31, 2011 (years) 1.29
Aggregate Intrinsic Value, Exercisable at December 31, 2011 $ 1,625,995