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Prepaid expenses and other current assets (Tables)
 12 Months Ended
Dec. 31, 2012
Schedule of Prepaid Expenses and Other Current Assets

Prepaid expenses and other current assets consist of the following:

 

     As of December 31,  
     2011      2012  

Prepaid concession approval fees

      —           79   

Prepaid for LCD procurement

      —           51   

Rental deposits and other receivables

      36         143   
  

 

 

     

 

 

  

Total prepaid expenses and other current assets

    $ 36       $ 273