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Commitments and Contingencies (Details 3) - $ / shares
6 Months Ended 12 Months Ended
Mar. 31, 2022
Sep. 30, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Weighted average remaining contractual life (in years) 6 years 3 months 14 days 6 years 9 months 14 days
Equity Option [Member]    
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]    
Number of outstanding options 11,350,319  
Number of vested options 8,201,651  
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 4,108,765  
Weighted average remaining contractual life (in years) 5 years 8 months 1 day  
Weighted average exercise price $ 2.29  
Number of vested options 4,059,181  
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 2,097,500  
Weighted average remaining contractual life (in years) 5 years 10 months 6 days  
Weighted average exercise price $ 3.30  
Number of vested options 1,822,500  
Weighted average exercise price $ 3.30  
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 3,347,054  
Weighted average remaining contractual life (in years) 5 years 10 months 28 days  
Weighted average exercise price $ 6.06  
Number of vested options 2,207,054  
Weighted average exercise price $ 6.35  
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 11.10  
Range of exercise prices, upper range limit $ 17.03  
Number of outstanding options 500,000  
Weighted average remaining contractual life (in years) 8 years 10 days  
Weighted average exercise price $ 13.53  
Number of vested options 67,916  
Weighted average exercise price $ 12.62  
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 3 months 29 days  
Weighted average exercise price $ 19.39  
Number of vested options 45,000  
Weighted average exercise price $ 24.08