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Accounts Receivable
9 Months Ended
Sep. 30, 2011
Accounts Receivable [Abstract] 
Accounts Receivable

2. Accounts Receivable

Accounts receivable consist of the following:

 

     September 30,
2011		     December 31,
2010		  

Trade customers

    $ 442,622      $ 353,035   

Affiliates

      234        475   

Allowance for doubtful accounts

      (10,563 )      (9,710 ) 
  

 

 

    

 

 

  
     432,293        343,800   

Federal and state taxes

      21,903        15,499   

Other

      8,274        3,564   
  

 

 

    

 

 

  

Accounts receivable, net

    $ 462,470      $ 362,863