CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Costs and Expenses:
Research and development	$ 2,122,898	$ 3,259,983	$ 4,383,602	$ 6,204,635
General and administrative	1,761,499	1,956,333	3,362,406	3,919,860
Loss from Operations	(3,884,397)	(5,216,316)	(7,746,008)	(10,124,495)
Other income (expense):
Change in fair value of debt	31,948		31,948
Interest expense	(231,948)		(231,948)
Change in fair value of derivative financial instruments and contingent consideration	55,322	7,266,276	690,445	4,555,829
(Loss) income before income taxes	(4,029,075)	2,049,960	(7,255,563)	(5,568,666)
Income tax benefit			536,000
Net (loss) income	$ (4,029,075)	$ 2,049,960	$ (6,719,563)	$ (5,568,666)
Weighted Average Common Shares Outstanding
Basic and Diluted (in shares)	10,664,066	7,506,702	10,395,581	6,123,294
Net (Loss) Income per Common Share
Basic and Diluted (in dollars per share)	$ (0.38)	$ 0.27	$ (0.65)	$ (0.91)