Consolidated Statements of Operations and Comprehensive Loss - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Statement [Abstract]
Revenues	$ 837,516	$ 2,212,694
Operating expenses:
Research and development	11,877,900	7,187,531
General and administrative	3,821,420	2,331,917
Total operating expenses	15,699,320	9,519,448
Loss from operations	(14,861,804)	(7,306,754)
Other income (expense):
Interest expense	(11,671)	(1,885)
Interest income	42,499	151,569
Other (expense) income, net	(33,132)	25,542
Total other (expense) income, net	(2,304)	175,226
Net loss before income tax benefit	(14,864,108)	(7,131,528)
Income tax benefit	0	3,245,879
Net loss	(14,864,108)	(3,885,649)
Other comprehensive income (loss) – unrealized gain (loss) on investments	5,136	(32,435)
Comprehensive loss	$ (14,858,972)	$ (3,918,084)
Net loss per share, basic and diluted	$ (0.38)	$ (0.26)
Weighted-average common shares outstanding, basic and diluted	38,914,990	15,110,585