Accounts payable and Other noncurrent liabilities - Agreements with Vendors (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Sep. 30, 2023
Accounts payable and other noncurrent liabilities
Accounts payable and accrued expenses	$ 11,798	$ 10,785
Other noncurrent liabilities	2,369	1,851
Vendor Agreement
Accounts payable and other noncurrent liabilities
Current	2,477	1,718
Less: discount	264	140
Accounts payable and accrued expenses	2,213	1,578
Noncurrent	2,444	1,967
Less: discount	158	116
Other noncurrent liabilities	$ 2,286	$ 1,851