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

Three Months Ended

June 30,

 

Six Months Ended

June 30,

   2014  2013  2014  2013
Numerator:                    
Net income   $92,814  $43,509  $21,390  $118,311
                     
Denominator:                    
Weighted average common shares outstanding used in computing net income per share:                    
Basic    4,915,710    4,864,953    4,906,803    4,863,008 
Diluted    5,162,197    4,987,156    4,961,413    4,946,155 
                     
Net income per share:                    
Basic   $0.02   $0.01   $0.00   $0.02 
Diluted   $0.02   $0.01   $0.00   $0.02