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Commitments And Contingencies (Future Minimum Rentals Due Under Non-Cancelable Leases) (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2016 $ 55,807
2017 45,553
2018 37,084
2019 29,282
2020 18,965
Thereafter 33,250
Total $ 219,941