GOODWILL (Tables)
12 Months Ended
Dec. 31, 2013
GOODWILL  
Schedule of changes in carrying amount of goodwill

 

 

 
  As of December 31  
 
  2012   2013  

Balance at the beginning of the year

  $ 37,348   $ 102,659  

Goodwill acquired in business acquisitions

    64,785      

Foreign currency translation adjustments

    526     (437 )
           

Balance at the end of the year

  $ 102,659   $ 102,222