Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses - Schedule of Accrued Expenses (Details)

v3.19.1
Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Accrued clinical operations and trials costs $ 9,585,065 $ 4,914,881
Accrued product development costs 3,703,548 2,222,093
Accrued compensation 1,327,756 2,253,621
Accrued other 947,484 460,596
Total $ 15,563,853 $ 9,851,191