CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Contract revenue	$ 2,111,254	$ 1,149,570	$ 3,116,948	$ 8,218,316
Operating expenses:
Research and development	1,143,182	1,222,527	2,172,313	2,836,154
General and administrative	1,435,381	1,819,241	2,628,679	4,015,361
Restructuring expense	0	35,982	0	2,096,791
Depreciation	40,435	36,687	78,136	73,793
Total operating expenses	2,618,998	3,114,437	4,879,128	9,022,099
Loss from operations	(507,744)	(1,964,867)	(1,762,180)	(803,783)
Other income (expense):
Interest income, net	1,478	(13,279)	428	(38,604)
Realization of cumulative translation adjustment	0	(229,192)	0	(229,192)
Change in fair value of derivative instruments	(330,484)	(120,615)	(290,586)	217,630
Other income - litigation	8,895,038	0	8,895,038	0
Other income (expense)	1,622	(1,911)	5,741	7,285
Total other income (expense)	8,567,654	(364,997)	8,610,621	(42,881)
Net income (loss) before income taxes	8,059,910	(2,329,864)	6,848,441	(846,664)
Income tax provision	(15,436)	(11,068)	(30,873)	(30,873)
Net income (loss)	$ 8,044,474	$ (2,340,932)	$ 6,817,568	$ (877,537)
Basic net income (loss) per share	$ 0.12	$ (0.04)	$ 0.11	$ (0.01)
Diluted net income (loss) per share	$ 0.12	$ (0.04)	$ 0.1	$ (0.01)
Weighted average shares used in calculation of basic net income (loss) per share	64,737,820	63,745,834	64,571,108	63,691,214
Weighted average shares used in calculation of diluted net income (loss) per share	65,206,075	63,745,834	64,917,267	63,691,214