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Interest expense
 12 Months Ended
Dec. 31, 2011
Interest expense [Abstract]  
Interest expense

17. Interest expense

 

                         
    Years Ended December 31,  
    2009     2010     2011  

Bank loan interest

   $ 27     $ 45     $ 89  

Convertible promissory notes interest

     962       —         —    

Interest on New Note, First Interim Notes and short-term loan from a third party lender

     973       —         —    
   

 

 

    

 

 

    

 

 

  

Total interest expense

   $ 1,962     $ 45     $ 89