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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) [Abstract]    
Revenue $ 375 $ 375
Operating expense:    
Research and development 450 392
Selling, general and administrative 8,543 5,742
Total operating expenses 8,993 6,134
Loss from operations (8,618) (5,759)
Loss on change in value of derivative liability 0 (117)
Interest income, net 15 23
Loss before taxes (8,603) (5,853)
Provision for income taxes (7) (2)
Net loss $ (8,610) $ (5,855)
Basic and diluted loss per share (in dollars per share) $ (0.16) $ (0.11)
Weighted average shares outstanding basic and diluted (in shares) 54,135 52,027