Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenue:
Option Revenue	$ 307,686	$ 348,837	$ 656,523	$ 568,937
Research and development	3,409,210	2,223,030	6,220,349	3,844,396
General and administrative	967,367	750,605	2,070,247	1,853,040
Depreciation and amortization	98,658	88,898	194,244	167,209
Operating loss	(4,167,549)	(2,713,696)	(7,828,317)	(5,295,708)
Interest income	4,290	3,066	9,484	4,940
Other income and expense, net				37,910
Interest expense		(285,800)		(1,921,054)
Net loss	$ (4,163,259)	$ (2,996,430)	$ (7,818,833)	$ (7,173,912)
Basic and diluted loss per share	$ (0.15)	$ (0.37)	$ (0.28)	$ (0.94)
Weighted average shares outstanding - Basic and diluted	27,661,675	7,991,559	27,623,358	7,617,409