Consolidated Statements of Operations (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Revenues:    
License and collaboration revenue $ 2,737,002 $ 3,117,991
Total revenues 2,737,002 3,117,991
Costs and expenses:    
Research and development 23,027,578 15,486,476
General and administrative 5,976,276 4,034,925
Total costs and expenses 29,003,854 19,521,401
Loss from operations (26,266,852) (16,403,410)
Interest expense (612,963) (193,498)
Interest income 29,617 39,002
Income taxes (18,000) (32,921)
Net loss $ (26,868,198) $ (16,590,827)
Net loss per common share:    
Basic & Diluted $ (1.56) $ (2.96)
Weighted average number of common shares:    
Basic & Diluted 17,260,768 5,607,539