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Property and equipment, net
12 Months Ended
Dec. 31, 2012
Property and equipment, net [Abstract]  
Property and equipment, net
9.PROPERTY AND EQUIPMENT, NET

 

   December 31, 
   2011   2012 
         
Computer equipment and application software  $22,105   $81,023 
Building (i)   671    45,050 
Office building related facility and machines (i)   -    13,212 
Furniture and vehicles   507    4,422 
Leasehold improvements   1,336    1,038 
    24,619    144,745 
Less: Accumulated depreciation and amortization   7,954    18,710 
Property and equipment, net  $16,665   $126,035 

 

(i)In August 2012, the Group entered into a series of definitive agreements to purchase two parcels of office buildings and the associated land use rights with an area of approximately 69,205 square meters in Chaoyang District, Beijing, China for a total cash consideration of $222 million. As of December 31, 2012, the Group completed the acquisition of one parcel of the building and capitalized the related building cost of $43,927 and the cost for the facilities of the building of $13,212. As of December 31, 2012, the other parcel of the building is still under construction. 

Depreciation and amortization expenses for the years ended December 31, 2010, 2011 and 2012 were $781, $3,393 and $14,768, respectively.