Annual report pursuant to Section 13 and 15(d)

Net Loss Per Common Share (Details)

v3.3.1.900
Net Loss Per Common Share (Details) - USD ($)
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Outstanding securities excluded from computation of diluted weighted shares outstanding as they would have been anti dilutive:    
Outstanding securities excluded from computation of diluted weighted shares outstanding (in shares) 4,692,873 3,604,708
Basic and diluted net loss per common share calculation:    
Net loss $ (50,528,240) $ (49,700,875)
Accretion of redeemable convertible preferred stock   (28,521)
Net loss attributable to common stockholders $ (50,528,240) $ (49,729,396)
Weighted average common shares outstanding 43,794,276 24,655,603
Net loss per share of common stock-basic and diluted $ (1.15) $ (2.02)
Options outstanding    
Outstanding securities excluded from computation of diluted weighted shares outstanding as they would have been anti dilutive:    
Outstanding securities excluded from computation of diluted weighted shares outstanding (in shares) 4,630,073 3,574,450
Warrants    
Outstanding securities excluded from computation of diluted weighted shares outstanding as they would have been anti dilutive:    
Outstanding securities excluded from computation of diluted weighted shares outstanding (in shares) 62,800 30,258