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Receivables (Net Components Of Receivables) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Receivables [Abstract]    
Customers, trade $ 696,856 $ 621,539
Income tax receivable 1,703 11,027
Other 31,311 27,662
Receivables, gross 729,870 660,228
Less allowance for discounts, returns, claims and doubtful accounts 43,705 45,755
Receivables, net $ 686,165 $ 614,473