Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Net Income (Loss) Per Share of Common Stock - Schedule of Computation of Basic and Diluted Net Income (Loss) Per Share for Common Stockholders (Detail) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Earnings Per Share [Abstract]    
Net income (loss) $ 11,587,015 $ (19,106,481)
Weighted average shares of common stock outstanding 79,409,556 73,656,534
Net loss per share of common stock-basic and diluted $ 0.15 $ (0.26)