Consolidated Statements of Operations and Comprehensive Loss (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Revenue
Licensing revenue	$ 0	$ 22,000	$ 325,000
Total revenue		22,000	325,000
Operating expenses
Research and development	1,007,000	551,000	6,502,000
General and administrative	1,594,000	691,000	6,285,000
Total operating expenses	2,601,000	1,242,000	12,787,000
Loss from operations	(2,601,000)	(1,220,000)	(12,462,000)
Other expense
Loss on derivative liabilities	(9,428,000)	0	(42,317,000)
Amortization of note discount	0	(303,000)	(2,636,000)
Interest expense, net	0	(96,000)	(233,000)
Total other expense	(9,428,000)	(399,000)	(45,186,000)
Net loss	(12,029,000)	(1,619,000)	(57,648,000)
Net loss per share - basic & diluted (in dollars share)	$ (0.07)	$ (0.02)	$ (0.57)
Weighted average number of shares of common stock outstanding - basic & diluted (in shares)	182,535,562	66,908,810	101,201,753
Net loss	(12,029,000)	(1,619,000)	(57,648,000)
Other comprehensive income (loss)
Net unrealized gain (loss) on foreign currency translations	(4,000)	(113,000)	41,000
Comprehensive loss	$ (12,033,000)	$ (1,732,000)	$ (57,607,000)