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Property, Plant And Equipment, Intangible Assets And Goodwill (Schedule Of Future Amortization Expenses) (Details) (USD $)
In Thousands, unless otherwise specified
6 Months Ended
Jun. 30, 2012
Property, Plant And Equipment, Intangible Assets And Goodwill [Abstract]  
2013 $ 283,193
2014 263,354
2015 237,112
2016 222,565
2017 $ 194,814