Annual report pursuant to Section 13 and 15(d)

Accrued Expenses - Schedule of Accrued Expenses (Detail)

v3.7.0.1
Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($)
Dec. 31, 2016
Dec. 31, 2015
Accrued expenses    
Accrued compensation expense $ 1,198,448 $ 704,597
Accrued audit and tax fees 454,931 179,223
Accrued professional fees, and other 867,969 194,790
Accrued R&D fees 1,040,321 466,076
Accrued other 157,788 194,694
Total amount of accrued expenses $ 3,719,457 $ 1,739,380