Statements of Operations (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Operating expenses:
Research and development	$ 5,378,148	$ 1,394,322
General and administrative	1,598,726	1,053,304
Total operating expenses	6,976,874	2,447,626
Loss from operations	(6,976,874)	(2,447,626)
Other income (expense)
Interest expense	(425,834)	(378,228)
Interest income	1,172	56
Change in fair value of warrants	(100,844)	12,606
Loss on extinguishment of debt	1,035,981
Loss before benefit from income taxes	(8,538,361)	(2,813,192)
Benefit from income taxes		3,652,485
Net loss (income)	$ (8,538,361)	$ 839,293
Net (loss) income per share (basic)	$ (0.40)	$ 0.10
Net (loss) income per share (diluted)	$ (0.40)	$ 0.01
Weighted-average shares outstanding (basic)	21,282,692	106,309
Weighted-average shares outstanding (diluted)	21,282,692	822,178