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Intangible Assets - Estimated Future Amortization Expenses (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Sep. 30, 2013
Estimated Future Amortization Expense    
Fiscal year ended September 30, 2015 $ 555  
Fiscal year ended September 30, 2016 554  
Fiscal year ended September 30, 2017 33  
Fiscal year ended September 30, 2018 0  
Fiscal year ended September 30, 2019 and thereafter 0  
Other intangible assets, net $ 1,142 $ 2,159