CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (USD $) In Thousands, except Per Share data	3 Months Ended	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues
Operating Expenses:
Research and development	5,189	7,771	9,638	12,924
Marketing, general and administrative	10,025	2,818	12,751	5,071
Total operating expenses	15,214	10,589	22,389	17,995
Operating loss	15,214	10,589	22,389	17,995
Loss on change in fair value of derivative liability	185,359	29,920	160,017	32,032
Interest (income) expense, net	(94)	1	(95)	14
Other (income) expense, net	(11)	830	(88)	493
Loss from operations before taxes	200,468	41,340	182,223	50,534
Provision for income taxes	1,635	17	1,586	34
Net and comprehensive loss	$ 202,103	$ 41,357	$ 183,809	$ 50,568
Loss per share:
Basic and diluted	$ 1.58	$ 0.42	$ 1.46	$ 0.51
Weighted average shares:
Basic and diluted	128,360	98,906	125,907	98,844

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