Annual report pursuant to Section 13 and 15(d)

Organization and Description of the Business (Details)

v3.3.1.900
Organization and Description of the Business (Details)
12 Months Ended
Dec. 31, 2015
USD ($)
item
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Organization and Description of the Business      
Number of operating segments | item 1    
Liquidity      
Accumulated deficit $ 182,497,965 $ 131,969,725  
Net loss (50,528,240) (49,700,875)  
Cash and cash equivalents 46,773,566 36,205,559 $ 37,965,198
Marketable securities $ 125,864,447 $ 70,698,640