Stockholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2015
Equity [Abstract]  
Assumptions in Computing Option Fair Value

The fair value of all options granted during the years ended December 31, 2015 and 2014 was determined using the following assumptions:

 

Expected volatility

    65% - 90%

Risk free interest rate

    1.69% - 1.76%

Expected term (years)

    5.0

Dividend yield

    0%
Summary of Activity Related to Options Granted

Stock option activity is as follows:

 

     Number of
Options		      Weighted
Average
Exercise Price		      Weighted
Average
Remaining
Contractual Life		    Aggregate Fair
Value		  

Outstanding December 31, 2013

      4,045,324       $ 1.85       2.05 Years    $ 7,483,849   

Granted

      252,000       $ 3.80         

Exercised

      (1,138,331 )     $ 0.78         

Forfeited

      (14,000 )     $ 2.43         

Expired

            
  

 

 

     

 

 

        

Outstanding December 31, 2014

      3,144,993       $ 2.39       1.48 Years    $ 7,516,533   

Granted

      100,000       $ 0.60         

Exercised

      (218,010 )     $ 1.50         

Forfeited

            

Expired

      (889,983 )     $ 2.07         
  

 

 

     

 

 

        

Outstanding December 31, 2015

      2,137,000       $ 2.53       .75 Years    $ 5,406,610   

Exercisable at, December 31, 2015

      1,856,001       $ 2.64          $ 4,899,843   

Unvested at December 31, 2015

      280,999