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Goodwill And Other Intangible Assets (Estimated Future Amortization Expense) (Details)
$ in Thousands
Dec. 31, 2016
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2017 $ 12,280
2018 10,734
2019 10,658
2020 9,356
2021 7,963
After 2022 $ 46,553