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Note 5 - Accounts Receivable, Net (Tables)
 3 Months Ended
Mar. 31, 2017
Notes Tables  
Schedule of Accounts Receivable [Table Text Block]
    March 31,
2017		   December 31,
2016
    US$(’000)   US$(’000)
    (Unaudited)    
                 
Accounts receivable    
6,969
      
6,034
  
Allowance for doubtful accounts    
(2,727
 )    
(2,712
 )
Accounts receivable, net    
4,242
      
3,322