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Note - 17 Selected Quarterly Financial Data (Unaudited)
12 Months Ended
Dec. 31, 2012
Quarterly Financial Information [Text Block]
17. SELECTED QUARTERLY FINANCIAL DATA (Unaudited)

(in thousands, except per share data)
 
Quarters Ended
 
   
March 31
   
June 30
   
September 30
   
December 31
 
 
2012
                       
Total revenue
  $ -     $ -     $ -     $ -  
Net loss
    (6,186 )     (6,104 )     (6,018 )     (8,260 )
Basic and diluted net loss per share
    (0.19 )     (0.18 )     (0.18 )     (0.23 )
                                 
2011
                               
Total revenue
  $ 2,000     $ -     $ -     $ -  
Net loss
    (3,764 )     (6,944 )     (6,393 )     (6,121 )
Basic and diluted net loss per share
    (0.28 )     (0.42 )     (0.25 )     (0.22 )