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Commitments and Contingencies (Details 5) - USD ($)
$ in Thousands
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Loss Contingencies [Line Items]      
Total share based compensation $ 16,370 $ 18,379 $ 8,231
General and Administrative Expense [Member]      
Loss Contingencies [Line Items]      
Total share based compensation 5,558 7,129 3,571
Research and Development Expense [Member]      
Loss Contingencies [Line Items]      
Total share based compensation $ 10,812 $ 11,250 $ 4,660