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STOCKHOLDERS' EQUITY (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Stockholders Equity [Line Items]      
Preferred stock, shares authorized 10,000,000   10,000,000
Preferred stock, par value (in dollars per share) $ 0.001   $ 0.001
Common stock, par value (in dollars per share) $ 0.001   $ 0.001
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition 2 years    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Total $ 20,800,000    
Common Stock, Shares Authorized 150,000,000   150,000,000
Share-based Compensation, Total $ 1,698,965 $ 5,357,028  
Non Employee Restricted Stock [Member]      
Stockholders Equity [Line Items]      
Restricted Stock, Outstanding, Number, Ending Balance 2,343,292    
Corporate Milestone [Member]      
Stockholders Equity [Line Items]      
Restricted Stock, Outstanding, Number, Ending Balance 411,172    
Restricted Stock [Member]      
Stockholders Equity [Line Items]      
Share-based Compensation, Total $ 1,700,000 $ 5,400,000  
Incentive Plan 2012 [Member]      
Stockholders Equity [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 4,150,631