Quarterly report pursuant to Section 13 or 15(d)

Stock-based Activity (Details 1)

v3.7.0.1
Stock-based Activity (Details 1) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Total stock-based compensation expense $ 2,469,824 $ 957,563 $ 3,502,636 $ 2,491,451
Research and Development Expense [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Total stock-based compensation expense 376,684 284,057 697,359 587,681
General and Administrative Expense [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]        
Total stock-based compensation expense $ 2,093,140 $ 673,506 $ 2,805,277 $ 1,903,770