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Goodwill And Other Intangible Assets (Estimated Annual Amortization Expense) (Details)
$ in Thousands
Sep. 30, 2017
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2019 $ 3,867
2020 3,832
2021 3,747
2022 3,673
2023 $ 3,114