Significant Concentrations and Risks (Tables)
 3 Months Ended
Mar. 31, 2014
Fair Value Disclosures [Abstract]  
Summary of sales to major customers
For three months ended March 31, 2014
  
For three months ended March 31, 2013
Largest
  
Amount of
  
% Total
  
Largest
  
Amount of
  
% Total
Customers
  
Sales
  
Sales
  
Customers
  
Sales
  
Sales
   
($’000)
          
($’000)
    
   
(Unaudited)
  
(Unaudited)
      
(Unaudited)
  
(Unaudited)
                     
Customer A
  
23,740
  
12%
  
Customer B
  
30,853
  
15%