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Leases (Summary Of Future Minimum Rental Payments Under Operating Leases) (Details)
$ in Thousands
Dec. 31, 2018
USD ($)
Leases [Abstract]  
2019 $ 26,791
2020 24,152
2021 19,669
2022 13,851
2023 8,179
Thereafter 10,974
Total lease payments $ 103,616