CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Revenue	$ 310,000	$ 314,000	$ 310,000	$ 336,000
Operating expenses
Research and development	1,876,000	3,721,000	2,883,000	4,272,000
General and administrative	2,151,000	2,875,000	3,745,000	3,566,000
Total operating expenses	4,027,000	6,596,000	6,628,000	7,838,000
Loss from operations	(3,717,000)	(6,282,000)	(6,318,000)	(7,502,000)
Other income (expense)
Gain (loss) on derivative liabilities	19,120,000	(4,069,000)	9,692,000	(4,069,000)
Amortization of note discount	0	(2,334,000)	0	(2,637,000)
Interest expense, net	0	(128,000)	0	(224,000)
Other income (expense), net	19,120,000	(6,531,000)	9,692,000	(6,930,000)
Net income (loss)	15,403,000	(12,813,000)	3,374,000	(14,432,000)
Net income (loss) per share - basic (in dollars per share)	$ 0.08	$ (0.14)	$ 0.02	$ (0.18)
Weighted average number of shares of common stock outstanding - basic (in shares)	183,590,053	90,645,074	183,065,721	78,842,512
Net income (loss) per share - diluted (in dollars per share)	$ 0.05	$ (0.14)	$ 0.01	$ (0.18)
Weighted average number of shares of common stock outstanding - diluted (in shares)	324,880,957	90,645,074	325,709,071	78,842,512
Other comprehensive income (loss)
Net unrealized gain (loss) on foreign currency translations	(16,000)	158,000	(20,000)	45,000
Comprehensive income (loss)	$ 15,387,000	$ (12,655,000)	$ 3,354,000	$ (14,387,000)