Consolidated Statements of Operations - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenue:
Option Revenue	$ 2,905,165	$ 2,556,329
Research and development	6,497,531	10,039,496
General and administrative	3,122,337	4,258,147
Depreciation and amortization	238,127	351,403
Impairment loss	1,036,467	0
Loss on disposal of fixed assets	2,320	1,167
Operating loss	(7,991,617)	(12,093,884)
Interest income, net	874	5,911
Other income and expense, net	10,629	68,695
Net loss	$ (7,980,114)	$ (12,019,278)
Basic and diluted loss per share	$ (1.13)	$ (2.05)
Weighted average shares outstanding	7,048,661	5,854,438