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Earnings Per Share (Tables)
12 Months Ended
Dec. 31, 2015
Earnings Per Share [Abstract]  
Schedule of Net Income Per Share

Net income per share calculation information is as follows:

 

     Year ended December 31,  
     2014      2015  

Net income

   $ 39,999,367       $ 6,362,322   
  

 

 

    

 

 

 

Weighted-average shares outstanding:

     

Basic

     22,811,825         22,911,727   

Effect of dilutive restricted stock

     132,990         113,993   
  

 

 

    

 

 

 

Diluted

     22,944,815         23,025,720   
  

 

 

    

 

 

 

Net income per basic share

   $ 1.75       $ 0.28   
  

 

 

    

 

 

 

Net income per diluted share

   $ 1.74       $ 0.28