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NET LOSS PER SHARE OF COMMON STOCK - Computation of Basic and Diluted Loss Per Share (Details) - USD ($)
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Earnings Per Share [Abstract]    
Net loss $ (12,151,165) $ (15,827,200)
Weighted average shares of common stock outstanding 39,177,592 38,968,110
Net loss per share of common stock – basic and diluted $ (0.31) $ (0.41)