Consolidated Statements of Operations (USD $)	12 Months Ended		230 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011
Consolidated Statements of Operations [Abstract]
Revenues			$ 900,000
Operating expenses:
Research and development	93,319	465,449	116,041,598
General and administrative	2,032,946	2,657,488	68,814,888
Purchased in-process research and development			12,146,544
Operating expenses before accrual reversal	2,126,265	3,122,937	197,003,030
Accrual reversal	(561,195)		(561,195)
Total operating expenses	1,565,070	3,122,937	196,441,835
Loss from operations	(1,565,070)	(3,122,937)	(195,541,835)
Gain on early extinguishment of debt		6,277,100	6,277,100
Other income (expense), net	43,814		(1,474,064)
Forgiveness of debt	476,837		476,837
Interest expense, net	(1,838,484)	(2,643,630)	(14,489,110)
Investment income	689	1,886	7,705,004
Net income (loss)	(2,882,214)	512,419	(197,046,068)
Preferred stock beneficial conversion feature			(8,062,712)
Accrual of preferred stock dividends and modification of warrants held by preferred stock stockholders			(1,229,589)
Net income (loss) applicable to common stockholders	(2,882,214)	512,419	(206,338,369)
Net income (loss) attributable to common stockholders, basic and diluted	$ (2,882,214)	$ 143,137
Net income (loss) per share, basic	$ (0.10)	$ 0.01
Net income (loss) per share, diluted	$ (0.10)	$ 0
Weighted average common shares, basic	29,626,072	26,686,933
Weighted average common shares, diluted	29,626,072	31,586,933