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Gross Fair Value of all Derivative Instruments (Details) - Foreign Currency Forward Contracts - USD ($)
Mar. 31, 2016
Sep. 30, 2015
Derivatives Fair Value [Line Items]    
Derivative Assets $ 5,000  
Prepaid Expenses and Other Current Assets    
Derivatives Fair Value [Line Items]    
Derivative Assets $ 5,000  
Accrued Expenses and Other Current Liabilities    
Derivatives Fair Value [Line Items]    
Derivatives Liabilities   $ 18,000