Quarterly report pursuant to Section 13 or 15(d)

Accrued Expenses - Schedule of Accrued Expenses (Detail)

v3.5.0.2
Accrued Expenses - Schedule of Accrued Expenses (Detail) - USD ($)
Jun. 30, 2016
Dec. 31, 2015
Accrued expenses    
Accrued compensation expense $ 690,733 $ 704,597
Accrued audit and tax fees 245,175 179,223
Accrued professional fees, and other 355,753 194,790
Accrued R&D fees 899,579 466,076
Accrued other 134,155 194,694
Total amount of accrued expenses $ 2,325,395 $ 1,739,380