Inventories
 12 Months Ended
Dec. 31, 2011
Inventories [Abstract]  
Inventories
7.   INVENTORIES

 

     As of December 31  
     2010      2011  

Inventories

      

Finished goods

      7,453         13,579   

Raw materials

      6,004         4,577   

Work in process

      294         578   
  

 

 

     

 

 

  
     13,751         18,734   
  

 

 

     

 

 

  

The finished goods included consignment inventory of $156 and $830 as of December 31, 2010 and 2011, respectively.