Annual report pursuant to Section 13 and 15(d)

Commitments And Contingencies (Schedule Of Future Minimum Rental Payments For Operating Leases) (Details)

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Commitments And Contingencies (Schedule Of Future Minimum Rental Payments For Operating Leases) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2011
Commitments And Contingencies [Abstract]  
2012 $ 38,773
2013 35,060
2014 29,819
2015 26,892
2016 25,254
Thereafter 94,892
Operating leases, future minimum payments due, total $ 250,690