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Note 15 - Prior Period Financial Statement Revision (Tables)
 12 Months Ended
Dec. 31, 2018
Notes Tables  
Schedule of Error Corrections and Prior Period Adjustments [Table Text Block]
For the Six Months Ended December 31, 2017
  
Statement of Comprehensive Loss
  
Amounts
Previously
Reported
    
Adjustment
    
As Revised
  
Net loss
   $
(2,283,000
 )   $
(487,000
 )   $
(2,770,000
 )
Other comprehensive loss:
                        
Foreign currency translation adjustments
    
(5,000
 )    
--
      
(5,000
 )
Comprehensive loss
    
(2,288,000
 )    
(487,000
 )    
(2,775,000
 )
Comprehensive loss attributable to non-controlling interests
    
(487,000
 )    
--
      
(487,000
 )
Comprehensive loss attributable to common stockholders
   $
(1,801,000
 )   $
(487,000
 )   $
(2,288,000
 )