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Commitments And Contingencies (Schedule of Future Minimum Lease Payments) (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2019 $ 18,807
2020 15,113
2021 12,449
2022 9,113
2023 6,627
Thereafter 23,894
Total minimum lease payments $ 86,003