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Equity (Tables)
6 Months Ended
Jun. 30, 2016
Warrants [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of option and warrant activities

 
Number of Units  Weighted 
Average 
Exercise 
Price
  Weighted 
Average 
Remaining 
Contractual 
Term 
(in years)
  Aggregate 
Intrinsic 
Value
 
             
Outstanding, December 31, 2015  8,954,031   3.73   2.93   10,199,230 
Granted  10,000   1.77         
Exercised  (183,718)  -   -   - 
Outstanding, June 30, 2016  8,780,313   3.78   2.44   4,112,959 
                 
Exercisable, June 30, 2016  8,495,313   3.65   2.25   4,112,959
Stock Options [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Summary of option and warrant activities

  Number of Units  Weighted 
Average 
Exercise 
Price
  Weighted 
Average 
Remaining 
Contractual 
Term 
(in years)
  Aggregate 
Intrinsic 
Value
 
Outstanding, December 31, 2015  3,971,583   4.34   8.01   2,964,146 
Granted  1,945,000   2.01   9.77   - 
Cancelled  (100,000)  1.91   -   - 
Outstanding, June 30, 2016  5,816,583   3.60   8.26   709,217 
                 
Exercisable, June 30, 2016  2,165,880   3.69   6.40   701,170