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Note 4 - Cash and cash equivalent
6 Months Ended
Jun. 30, 2013
Cash and Cash Equivalents [Abstract]  
Cash and Cash Equivalents Disclosure [Text Block]
4.  
Cash and cash equivalent

   
June 30,
2013
   
December 31,
2012
 
   
US$(’000)
   
US$(’000)
 
   
(Unaudited)
       
             
Cash
    740       893  
Bank deposit
    2,652       4,590  
      3,392       5,483