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Commitments and Contingencies (Details 6)
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]      
Risk-free interest rate 3.70% 3.11% 0.73%
Expected life of options (years) 5 years 7 months 20 days 5 years 6 months 25 days 5 years 8 months 26 days
Annualized volatility 85.13% 84.17% 93.43%
Dividend rate 0.00% 0.00% 0.00%