Statements of Operations (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 87 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Grant Revenue $ 0   $ 650
Operating expenses:      
Research and development 3,454 1,574 64,712
Acquired in-process research and development     5,500
Selling, general and administrative 2,387 1,970 26,402
Total operating expenses 5,841 3,544 96,614
Loss from operations (5,841) (3,544) (95,964)
Interest income 10 24 656
Interest expense (453) (203) (8,276)
Loss before tax benefit (6,284) (3,723) (103,584)
Income tax benefit 0   698
Net loss $ (6,284) $ (3,723) $ (102,886)
Basic and diluted net loss per common share (in dollars per share) $ (0.43) $ (0.26)  
Weighted average basic common shares outstanding (in shares) 14,732,582 14,553,748  
Weighted average diluted common shares outstanding (in shares) 14,732,582 14,553,748