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Commitments and Contingencies (Details 5)
3 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]    
Risk-free interest rate 1.37% 0.62%
Expected life of options (years) 6 years 6 months 5 years 7 months 2 days
Annualized volatility 96.79% 96.16%
Dividend rate 0.00% 0.00%