Net Loss Per Common Share - Basic and Diluted Loss per Common Share (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Earnings Per Share [Abstract]
Net loss	$ (30,819,866)	$ (17,675,373)	$ (77,785,576)	$ (49,244,511)
Weighted average number of common shares outstanding, basic and diluted	39,058,294	32,740,486	38,784,569	31,876,074
Net loss per common share	$ (0.79)	$ (0.54)	$ (2.01)	$ (1.54)