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Accounts Receivable, Net of Reserve for Doubtful Receivables (Tables)
9 Months Ended
Sep. 30, 2013
Reserve for Doubtful Receivables

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

 

     As of December 31,
2012
    As of September 30,
2013
 

Opening balance as of January 1

   $ 8,704      $ 9,073   

Additions due to acquisitions

     184        —     

Additions charged to cost and expense

     3,878        8,919   

Deductions

     (3,693     (3,473
  

 

 

   

 

 

 

Closing balance

   $ 9,073      $ 14,519