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Note 9 - Loss Per Share (Tables)
6 Months Ended
Jun. 30, 2015
Earnings Per Share [Abstract]  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   

For the six months

ended June 30, 

    2014   2015
         
Net loss attributable to common shareholders’     (7,881,596 )     (9,514,709 )
                 
Weighted average common shares – Outstanding     5,244,685       5,784,025  
Basic and diluted  loss per share     (1.50 )     (1.64 )