Condensed Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Expenses:
Research and development	$ 474		$ 844	$ 177
General and administrative	2,974	423	6,485	1,628
Total expenses	3,448	423	7,329	1,805
Loss from operations	(3,448)	(423)	(7,329)	(1,805)
Other income (expense):
Adjustments to fair value of derivative liabilities	1,227	3,993	2,696	3,346
Other income (expense), net	(1)		1	234
Net income (loss)	(2,222)	3,570	(4,632)	1,775
Preferred stock dividend forfeited (earned)	(205)	(3)	(281)	75
Net income (loss) and comprehensive income (loss) attributable to common stockholders	$ (2,427)	$ 3,567	$ (4,913)	$ 1,850
Net income (loss) per basic share	$ (0.18)	$ 6.69	$ (0.55)	$ 8.25
Net income (loss) per diluted share	$ (0.18)	$ 0.28	$ (0.55)	$ 0.04
Shares used in computing basic net income (loss) per share	13,253	533	8,995	224
Shares used in computing diluted net income (loss) per share	13,253	12,880	8,995	48,696