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Commitments and Contingencies (Details 4)
6 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]    
Risk-free interest rate 1.68% 2.91%
Expected life of options (years) 5 years 5 months 9 days 5 years 7 months 2 days
Annualized volatility 97.61% 105.96%
Dividend rate 0.00% 0.00%