Annual report pursuant to Section 13 and 15(d)

Accounts Receivable, Net (Tables)

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Accounts Receivable, Net (Tables)
12 Months Ended
Dec. 31, 2011
Accounts Receivable, Net [Abstract]  
Components Of Accounts Receivable, Net
     December 31,  
     2011     2010  

Trade accounts receivable

   $ 359,083      $ 307,279   

Allowance for doubtful accounts

     (7,545     (7,098
  

 

 

   

 

 

 

Accounts receivable, net

   $ 351,538      $ 300,181