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Long-Term Debt - Warrants and Put Option (Details) - Warrants And Put Option
$ in Thousands
12 Months Ended
Sep. 30, 2022
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Beginning balance $ 0
Additions 90,320
Unrealized gain (43,020)
Ending balance $ 47,300