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Note 7 - Other Current Assets, Net (Tables)
 3 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Other Receivables [Table Text Block]
    March 31, 2020   December 31,2019
      Gross       Allowance for doubtful accounts       Net       Gross       Allowance for doubtful accounts       Net  
   
US$(’000)
  
US$(’000)
  
US$(’000)
  
US$(’000)
  
US$(’000)
  
US$(’000)
    (Unaudited)   (Unaudited)   (Unaudited)            
                         
Staff advances for business operations    
16
 
    
-
 
    
16
 
    
11
 
    
-
 
    
11
 
Short-term loan to an unrelated party    
815
 
    
-
 
    
815
 
    
-
 
    
-
 
    
-
 
Overdue deposits    
706
 
    
(706
)
    
-
 
    
717
 
    
(717
)
    
-
 
Total    
1,537
 
    
(706
)
    
831
 
    
728
 
    
(717
)
    
11