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Net Income (Loss) Per Share Applicable to Common Stockholders (Tables)
3 Months Ended
Mar. 31, 2013
Accounting Policies [Abstract]  
Net income (loss) per share applicable to common stockholders
   Three Months Ended March 31,
   2013  2012
Numerator:      
Net income (loss)   $74,802  $(871,774)
           
Denominator:          

Weighted average common shares outstanding

used in computing net income (loss) per share:

          
Basic    4,861,063   4,838,214
Diluted    4,871,992   4,838,214
           
Net income (loss) per share:          
           
Basic   $0.02  $(0.18)
           
Diluted   $0.02  $(0.18)