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Intangible Assets, Net (Schedule of Finite-Lived Intangible Assets, Future Amortization Expense) (Details) - USD ($)
$ in Thousands
Sep. 30, 2015
Sep. 30, 2014
Intangible Assets, Net    
2016 $ 27,507  
2017 25,801  
2018 24,978  
2019 23,142  
2020 20,359  
Thereafter 103,351  
Finite-Lived Intangible Assets, Net, Total $ 225,138 $ 254,772