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Earnings Per Share
9 Months Ended
Sep. 30, 2011
Earnings Per Share [Abstract] 
Earnings Per Share
7.           EARNINGS PER SHARE
    
 
The calculation of basic earnings per share considers only weighted average outstanding common shares in the computation. The calculation of diluted earnings per share gives effect to all potentially dilutive securities. The calculation of diluted earnings per share is based  upon  the  weighted  average  number of common shares outstanding during the period, plus, if dilutive, the assumed exercise of stock options using the treasury stock method and the assumed conversion of other convertible securities (using the "if converted" method) at the beginning of the year, or for the period outstanding during the year for current year issuances. Weighted average shares outstanding for the three and nine months ended September 30, 2011 and 2010 were as follows:
 
     
For the three months
ended September 30,
   
For the nine months
ended September 30,
 
     
2011
   
2010
   
2011
   
2010
 
 
Weighted average common shares, basic
    23,877,362       23,678,795       23,715,224       23,584,079  
 
Dilutive effect of stock options
    313,890       172,315       299,915       187,851  
 
Weighted average common shares, diluted
    24,191,252       23,851,110       24,015,139       23,771,930  

The following stock options are anti-dilutive and have not been included in the calculation of weighted average shares outstanding:

     
For the three months
ended September 30,
   
For the nine months
ended September 30,
 
     
2011
   
2010
   
2011
   
2010
 
 
Stock options
    886,710       926,710       886,710       926,710