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Net Income (Loss) Per Share Applicable to Common Stockholders (Tables)
9 Months Ended
Sep. 30, 2014
Net income per share:  
Net income (loss) per share applicable to common stockholders
  

Three Months Ended

September 30,

 

Nine Months Ended

September 30,

   2014  2013  2014  2013
Numerator:                    
Net income (loss)   $431,120  $(320,868)  $452,510  $(202,557)
                     
Denominator:                    
Weighted average common shares outstanding used in computing net income (loss) per share:                    
Basic    4,934,591   4,867,063   4,916,066   4,864,360
Diluted    5,416,574   4,867,063   5,100,344   4,864,360
                     
Net income (loss) per share:                    
Basic   $0.09  $(0.07)  $0.09  $(0.04)
Diluted   $0.08  $(0.07)  $0.09  $(0.04)