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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]      
Revenue $ 2,197 $ 412 $ 20
Operating expense:      
Research and development 1,782 1,555 1,464
General, selling and administrative 29,002 37,718 15,932
Total operating expense 30,784 39,273 17,396
Loss from operations (28,587) (38,861) (17,376)
Gain (loss) on change in value of embedded derivative and warrants 1,608 (927) (5,595)
Interest income, net 122 329 228
Loss before taxes (26,857) (39,459) (22,743)
Income tax (expense) benefit (751) 12,535 5,480
Net loss $ (27,608) $ (26,924) $ (17,263)
Basic and diluted loss per share: (in dollars per share) $ (0.54) $ (0.53) $ (0.35)
Weighted average shares outstanding basic and diluted (in shares) 51,188,006 50,934,266 50,028,413