Quarterly report pursuant to Section 13 or 15(d)

Net Loss Per Share of Common Stock - Schedule of Computation of Basic and Diluted Net Loss Per Share for Common Stockholders (Detail)

v3.7.0.1
Net Loss Per Share of Common Stock - Schedule of Computation of Basic and Diluted Net Loss Per Share for Common Stockholders (Detail) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Earnings Per Share [Abstract]        
Net loss $ (2,836,887) $ (9,679,022) $ (9,185,052) $ (18,602,184)
Weighted average shares of common stock outstanding 41,656,006 27,497,424 41,656,006 27,490,667
Net loss per share of common stock-basic and diluted $ (0.07) $ (0.35) $ (0.22) $ (0.68)