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Commitments and Contingencies (Details 3) - $ / shares
9 Months Ended 12 Months Ended
Jun. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Weighted average remaining contractual life (in years) 6 years 7 months 13 days 6 years 7 months 24 days  
Equity Option [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Number of outstanding options 13,034,616 11,330,903 10,076,266
Weighted average exercise price $ 6.57 $ 5.74 $ 3.48
Number of vested options 8,562,530    
Equity Option [Member] | Option Price 1 [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Range of exercise prices, lower range limit $ 0.92    
Range of exercise prices, upper range limit $ 2.96    
Number of outstanding options 3,903,762    
Weighted average remaining contractual life (in years) 5 years 4 months 17 days    
Weighted average exercise price $ 2.30    
Number of vested options 3,868,762    
Weighted average exercise price $ 2.29    
Equity Option [Member] | Option Price 2 [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Range of exercise prices, lower range limit 3.15    
Range of exercise prices, upper range limit $ 4.80    
Number of outstanding options 2,078,800    
Weighted average remaining contractual life (in years) 5 years 7 months 2 days    
Weighted average exercise price $ 3.30    
Number of vested options 2,058,800    
Weighted average exercise price $ 3.28    
Equity Option [Member] | Option Price 3 [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Range of exercise prices, lower range limit 5.04    
Range of exercise prices, upper range limit $ 8.98    
Number of outstanding options 3,957,054    
Weighted average remaining contractual life (in years) 6 years 3 months 25 days    
Weighted average exercise price $ 6.28    
Number of vested options 2,356,221    
Weighted average exercise price $ 6.30    
Equity Option [Member] | Option Price 4 [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Range of exercise prices, lower range limit 10.09    
Range of exercise prices, upper range limit $ 17.03    
Number of outstanding options 1,798,000    
Weighted average remaining contractual life (in years) 9 years 4 months 17 days    
Weighted average exercise price $ 11.05    
Number of vested options 209,997    
Weighted average exercise price $ 14.40    
Equity Option [Member] | Option Price 5 [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]      
Range of exercise prices, lower range limit 18.11    
Range of exercise prices, upper range limit $ 24.58    
Number of outstanding options 1,297,000    
Weighted average remaining contractual life (in years) 9 years 29 days    
Weighted average exercise price $ 19.39    
Number of vested options 68,750    
Weighted average exercise price $ 24.03