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Accounts payable and accrued expenses, and Other noncurrent liabilities - Agreements with Vendors (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Sep. 30, 2022
Accounts payable and other noncurrent liabilities    
Accounts payable and accrued expenses $ 13,929 $ 22,463
Other noncurrent liabilities 2,906 3,046
Vendor Agreement    
Accounts payable and other noncurrent liabilities    
Current 1,758 1,758
Less: discount 146 184
Accounts payable and accrued expenses 1,612 1,574
Noncurrent 2,975 3,186
Less: discount 69 138
Other noncurrent liabilities $ 2,906 $ 3,048