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Accounts Receivable, Net of Reserve for Doubtful Receivables (Tables)
12 Months Ended
Dec. 31, 2013
Reserve for Doubtful Receivables

The following table provides details of the reserve for doubtful receivables recorded by the Company:

 

     As of December 31,  
     2011     2012     2013  

Opening Balance as of January 1

   $ 2,926      $ 8,704      $ 9,073   

Additions due to acquisitions

     240        184        —     

Additions charged to cost and expense

     6,298        3,878        11,420   

Deductions

     (760     (3,693     (3,933
  

 

 

   

 

 

   

 

 

 

Closing Balance

   $ 8,704      $ 9,073      $ 16,560