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Fair Value of Financial Instruments - Key Assumptions (Details) - Warrants
12 Months Ended
Sep. 30, 2017
$ / shares
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]  
Risk free interest rate 1.63%
Contractual term 5 years
Dividend yield 0.00%
Expected lives 5 years
Expected volatility 147.00%
Fair value per warrant $ 5.71