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STOCKHOLDERS' EQUITY (Tables)
9 Months Ended
Sep. 30, 2013
Stockholders Equity Tables  
Schedule of warrant activity

A summary of our warrant activity and related information for 2013 follows:

 

    Number of Shares Under Company Warrants     Weighted Average Exercise Price     Weighted
Average
Remaining
Contractual
Life in Years
    Aggregate
Intrinsic Value
 
Balance at December 31, 2012     12,193,499     $ 1.63       4.8     $ 17,971,994  
Granted     2,100,000     $ 2.72       7.1     $ 782,000  
Exercised                              
Expired                              
Cancelled                              
Balance at September 30, 2013     14,293,499     $ 1.79       4.5     $ 16,751,100  
Vested and Exercisable at September 30, 2013     12,190,468     $ 1.67       4.1     $ 15,499,537  
Schedule of assumptions used in the Black-Scholes Model

The assumptions used in the Black-Scholes Model during the nine months ended September 30, 2013 are set forth in the table below.

 

    Nine Months
Ended
September 30, 2013
    Year
Ended
December 31, 2012
 
Risk-free interest rate     0.65-1.71 %     0.61-2.23 %
Volatility     33.35-45.76 %     40.77-46.01 %
Term (in years)     5-6.25       5-6.25  
Dividend yield     0.00 %     0.00 %
Schedule of activity under the LTIP

A summary of activity under the LTIP and 2012 SOP and related information follows:

 

   Number of Shares Under Company Option   Weighted Average Exercise Price   Weighted
Average
Remaining
Contractual
Life in Years
   Aggregate Intrinsic Value 
Balance at December 31, 2012   13,733,488   $1.16    7.7   $26,804,117 
Granted   1,708,677   $2.75    9.6   $335,234 
Exercised   (61,372)               
Expired                   
Cancelled   (600,000)               
Balance at September 30, 2013   14,780,793   $1.27    7.6   $24,865,677 
Vested and Exercisable at September 30, 2013   10,101,920   $0.65    6.6   $22,803,024