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

5. Accounts receivable, net of 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   
  

 

 

    

 

 

  

Accounts receivable were $461,062 and $491,579 and the reserves for doubtful receivables were $9,073 and $14,519, resulting in net accounts receivable balances of $451,989 and $477,060 as of December 31, 2012 and September 30, 2013, respectively. In addition, accounts receivable due after one year of $19,140 and $17,006 as of December 31, 2012 and September 30, 2013, respectively, are included under other assets in the Consolidated Balance Sheets.

Accounts receivable from related parties were $64 and $63, and the reserve for doubtful receivables was $35 and $0, resulting in net accounts receivable balances of $29 and $63, as of December 31, 2012 and September 30, 2013, respectively.