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Commitments and Contingencies (Details 6)
12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]      
Risk-free interest rate 1.28% 1.63% 2.27%
Expected life of options (years) 5 years 10 months 17 days 6 years 3 months 18 days 6 years 9 months 22 days
Annualized volatility 114.75% 98.41% 89.19%
Dividend yields 0.00% 0.00% 0.00%