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Note 11 - Basic and Diluted Net Loss Per Share (Tables)
9 Months Ended
Sep. 30, 2015
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
 
 
Three Months Ended

September
30,
 
 
Nine
Months Ended

September
30,
 
 
 
2015
 
 
2014
 
 
2015
 
 
2014
 
Basic and dilutive numerator:
                               
Net loss, as reported
  $ (13,224,495 )   $ (3,449,470 )   $ (20,710,233 )   $ (9,284,877 )
Denominator:
                               
Weighted-average shares outstanding
    18,614,968       18,671,121       18,614,968       12,155,041  
Net loss per share - basic and diluted
  $ (0.71 )   $ (0.18 )   $ (1.11 )   $ (0.76 )