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Trade And Other Accounts Receivable, Net (Schedule Of Trade And Other Accounts Receivable, Net) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Trade And Other Accounts Receivable, Net [Abstract]      
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) (1,200)
Trade and other accounts receivable, net $ 278,332 $ 257,748