Accounts payable and accrued expenses, and Other noncurrent liabilities - Agreements with Vendors (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Accounts payable and other noncurrent liabilities
Accounts payable and accrued expenses	$ 22,463	$ 13,928
Other noncurrent liabilities	3,046	4,783
Vendor Agreement
Accounts payable and other noncurrent liabilities
Current	1,758	1,627
Less: discount	184	247
Accounts payable and accrued expenses	1,574	1,380
Noncurrent	3,186	4,682
Less: discount	138	315
Other noncurrent liabilities	$ 3,048	$ 4,367