Condensed Statements of Comprehensive Income (Loss) (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Expenses:
Research and development	$ 336	$ 177	$ 370	$ 177
General and administrative	2,877	727	3,514	1,205
Total expenses	3,213	904	3,884	1,382
Loss from operations	(3,213)	(904)	(3,884)	(1,382)
Other income (expense):
Adjustments to fair value of derivative liabilities	(4,485)	5,382	1,469	(647)
Other income (expense), net	1	236	2	234
Net income (loss)	(7,697)	4,714	(2,413)	(1,795)
Preferred stock dividends forfeited (earned)	(76)	78	(76)	78
Net income (loss) and comprehensive income (loss) attributable to common stockholders	$ (7,773)	$ 4,792	$ (2,489)	$ (1,717)
Net income (loss) per basic share	$ (0.67)	$ 0.39	$ (0.36)	$ (0.26)
Net income (loss) per diluted share	$ (0.67)	$ 0.01	$ (0.36)	$ (0.26)
Shares used in computing basic net income (loss) per share	11,603	12,389	6,886	6,700
Shares used in computing diluted net income (loss) per share	11,603	556,871	6,886	6,700