Condensed Consolidated Statements of Operations (Unaudited) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Operating expenses:
Research and development	$ 1,179,544	$ 1,444,906	$ 2,187,115	$ 3,797,713
General and administrative	1,795,886	2,349,227	3,349,025	6,211,711
Depreciation	5,790	5,845	12,393	13,698
Loss from operations	2,981,220	3,799,978	5,548,533	10,023,122
Other expense (income):
Interest expense, net	18,889	6,216	74,608	6,237
Change in fair value of warrant liability (Note 10)	(23,387,850)		(10,468,176)
Warrant related expenses (Note 7)			10,225,846
Other financing expenses			2,870,226
Net income (loss)	$ 20,387,741	$ (3,806,194)	$ (8,251,037)	$ (10,029,359)
Per share information:
Net income (loss) per share of common stock, basic (in dollars per share)	$ 0.88	$ (0.37)	$ (0.83)	$ (0.99)
Net income (loss) per share of common stock, diluted (in dollars per share)	$ (1)	$ (0.37)	$ (1.56)	$ (0.99)
Weighted average shares outstanding, basic (in shares)	10,828,063	10,263,703	10,582,521	10,130,042
Weighted average shares outstanding, diluted (in shares)	13,872,632	10,263,703	12,339,386	10,130,042