Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Operating Costs and Expenses:
General and administrative	$ 5,012	$ 2,588
Research and development	12,287	3,340
Total Operating Expenses	17,299	5,928
Loss from Operations	(17,299)	(5,928)
Other Income (Expense):
Warrant expense	0	(1,492)
Change in fair value of warrant liability	0	(242)
Interest income	33	14
Other income (expense)	(18)	22
Total Other Income (Expense), net	15	(1,698)
Loss from Continuing Operations	(17,284)	(7,626)
Income (Loss) from Discontinued Operations	216	(523)
Net Loss and Comprehensive Loss	$ (17,068)	$ (8,149)
Net Income (Loss) Per Share - Basic and Dilutive:
Continuing operations (in dollars per share)	$ (0.50)	$ (0.27)
Discontinued operations (in dollars per share)	$ 0.01	$ (0.02)
Net Income (Loss) Per Share (in dollars per share)	$ (0.49)	$ (0.29)
Weighted average number of shares outstanding during the period - Basic and Dilutive (in shares)	34,896,592	27,710,428