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Basis of Presentation - Concentrations of Credit Risk (Details)
6 Months Ended
Mar. 31, 2014
Customers
Accounts Receivable [Member]
 
Concentration Risk [Line Items]  
Number of customers 2
Accounts Receivable [Member] | Customer One [Member]
 
Concentration Risk [Line Items]  
Concentration risk, percentage 17.00%
Accounts Receivable [Member] | Customer Two [Member]
 
Concentration Risk [Line Items]  
Concentration risk, percentage 11.00%
UNITED STATES | Cash and Cash Equivalents and Restricted Cash [Member]
 
Concentration Risk [Line Items]  
Concentration risk, percentage 50.00%