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Note 9 - Noncontrolling Interest In Joint Venture (Tables)
 6 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Change in NonControlling Interest [Table Text Block]
Balance, December 31, 2016
   $
(4,718,505
)
         
Net loss attributable to the
non-controlling interest
    
(411,684
)
Foreign currency translation gain
    
27,402
  
Balance,
June 30, 2017
   $
(5,102,787
)