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Commitments And Contingencies (Future Minimum Operating Lease Payments) (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Commitments And Contingencies Disclosure [Abstract]  
2017 $ 23,394
2018 15,517
2019 11,991
2020 8,273
2021 7,557
Thereafter 7,018
Total minimum operating lease payments $ 73,750