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Intangible Assets, Net (Schedule of Finite-Lived Intangible Assets, Future Amortization Expense) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Intangible Assets, Net    
2015 $ 29,309  
2016 27,606  
2017 25,862  
2018 25,035  
2019 23,199  
Thereafter 123,761  
Finite-Lived Intangible Assets, Net, Total $ 254,772 $ 288,775