CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Contract revenue	$ 804,071	$ 1,005,694
Operating expenses:
Research and development	725,797	1,029,131
General and administrative	3,228,590	1,193,298
Depreciation	33,007	37,701
Total operating expenses	3,987,394	2,260,130
Loss from operations	(3,183,323)	(1,254,436)
Other (expense) income:
Interest income (expense), net	74,977	(1,050)
Change in fair value of derivative instruments	(90,191)	39,898
Other (expense) income	(375)	4,119
Total other (expense) income	(15,589)	42,967
Loss before income taxes	(3,198,912)	(1,211,469)
Income tax benefit (provision)	1,001,315	(15,437)
Net loss	$ (2,197,597)	$ (1,226,906)
Basic and diluted net loss per share	$ (0.03)	$ (0.02)
Weighted-average shares used in calculation of basic and diluted net loss per share	68,737,093	64,404,396