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Commitments and Contingencies (Schedule Of Future Minimum Rental Commitments under Non-cancelable Operating Leases) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]  
2013 $ 9,912
2014 10,139
2015 10,129
2016 10,430
2017 10,792
Thereafter 627,034
Future minimum annual rental commitments under non-cancelable operating leases, due $ 678,436