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Trade And Other Accounts Receivable, Net
 12 Months Ended
Dec. 31, 2011
Trade And Other Accounts Receivable, Net [Abstract]  
Trade And Other Accounts Receivable, Net
5. Trade and Other Accounts Receivable, Net

 

     December 31  
     2011     2010  

Trade receivables

    $ 254,959      $ 234,233   

Income tax receivables

      5,755        15,146   

Other tax receivables

      5,060        4,928   

Innospec Inc. settlement receivable

      5,015        0   

Other

      8,059        4,174   

Allowance for doubtful accounts

      (516 )      (733 ) 
  

 

 

    

 

 

  
   $ 278,332      $ 257,748   
  

 

 

    

 

 

  

 

Bad debt write-offs totaled $628 thousand in 2011 and $0 in 2010 and 2009. The allowance for doubtful accounts amounted to $1.2 million at December 31, 2009. The change in the allowance for doubtful accounts between 2009 and 2010 primarily reflected our evaluation of certain higher risk customer receivables, all of which were current at December 31, 2010, as well as allowances for disputed invoiced prices and quantities. The change in the allowance for doubtful accounts between 2010 and 2011 reflects our evaluation of certain higher risk customer receivables (all of which were current at December 31, 2011), bad debt write-offs, and allowances for disputed invoiced prices and quantities.