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Earnings Per Common Share (Tables)
3 Months Ended
Mar. 31, 2013
Earnings Per Common Share [Abstract]  
Weighted Average Number Of Shares Used In Computing Earnings Per Share
  Three Months Ended
  March 31,  
  2013 2012
Average number of common shares outstanding 3,367,689 3,316,005
Effect of dilutive common stock 10,680 8,751
Average number of common shares outstanding used to calculate diluted earnings per share 3,378,369 3,324,756