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Accounts payable and accrued expenses, and Other noncurrent liabilities - Agreements with Vendors (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Sep. 30, 2021
Accounts payable and other noncurrent liabilities    
Accounts payable and accrued expenses $ 13,126 $ 13,928
Other noncurrent liabilities 4,783 $ 4,783
Vendor Agreement    
Accounts payable and other noncurrent liabilities    
Current 1,758  
Less: discount 242  
Accounts payable and accrued expenses 1,516  
Noncurrent 4,773  
Less: discount 268  
Other noncurrent liabilities $ 4,505