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Intangible Assets and Goodwill (Future Amortization of Intangible Assets) (Details)
$ in Thousands
Sep. 30, 2016
USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]  
2017 $ 2,370
2018 3,026
2019 1,730
2020 1,367
2021 $ 1,036