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Note 5 - Accounts Receivable, Net (Tables)
 6 Months Ended
Jun. 30, 2017
Notes Tables  
Schedule of Accounts Receivable [Table Text Block]
    June 30,
2017		   December 31,
2016
    US$(’000)   US$(’000)
    (Unaudited)    
         
Accounts receivable    
7,868
      
6,034
  
Allowance for doubtful accounts    
(2,777
 )    
(2,712
 )
Accounts receivable, net    
5,091
      
3,322