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Commitments And Contingencies (Schedule Of Future Minimum Commitment Of Royalty Leases Under License Agreements) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Commitments And Contingencies [Abstract]  
2012 $ 121,233
2013 90,666
2014 35,883
2015 24,140
2016 3,714
Thereafter 3,990
Future minimum royalty commitments, total $ 279,626