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Segment Reporting (Details 1) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Reconciliation of earnings before taxes to segment profit    
Earnings before taxes $ 69,136 $ 69,308
Amortization 5,122 5,199
Interest expense 5,400 5,823
Restructuring Charges 5,002 308
Other charges (income), net 773 156
Segment Profit Information $ 85,433 $ 80,794