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Long-Term Debt - Warrants and Put Option (Details) - Warrants And Put Option - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2022
Mar. 31, 2022
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 84,771 $ 0
Additions 0 84,771
Unrealized losses 6,161 6,161
Ending balance $ 90,932 $ 90,932