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Goodwill And Other Intangible Assets (Schedule Of Estimated Future Amortization Expense) (Details)
$ in Thousands
Mar. 31, 2017
USD ($)
Goodwill And Other Intangible Assets [Abstract]  
2017 (remaining nine months) $ 8,210
2018 9,968
2019 9,761
2020 9,196
2021 $ 6,389