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Commitments And Contingencies (Future Minimum Lease Payments) (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Commitments and Contingencies Disclosure [Abstract]  
2019 $ 9,479
2020 9,685
2021 9,661
2022 6,536
2023 2,308
Thereafter 5,663
Total future minimum lease payments $ 43,332