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Debt (Details) (USD $)
In Thousands
Jun. 30, 2011
Dec. 31, 2010
Debt including capital lease obligations    
Term Loan, interest rate of 2.25% and 2.30% at June 30, 2011 and December 31, 2010, respectively $ 487,500 $ 500,000
Capital lease obligations and other borrowings 32,660 27,711
Debt and capital lease obligations 520,160 527,711
Less amounts due within one year 55,697 51,481
Total debt due after one year $ 464,463 $ 476,230