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Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2012
Earnings Per Share [Abstract]  
Reconciliation of numerator and denominator
                 
    Three Months Ended June 30,  
    2012     2011  

Numerator:

               

Net income attributable to common shareholders

  $ 1,744,290     $ 2,177,619  
   

 

 

   

 

 

 

Denominator:

               

Weighted-average shares outstanding – basic

    19,771,167       20,471,621  

Dilutive effect of other securities

    225,638       190,098  
   

 

 

   

 

 

 

Weighted-average shares outstanding – diluted

    19,996,805       20,661,719