Leases - Assets and Liabilities - Finance Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Sep. 30, 2022
Finance Lease, Right-of-Use Asset, after Accumulated Amortization [Abstract]
Property, plant and equipment, at cost	$ 3,678	$ 2,476
Accumulated amortization	(2,367)	(2,276)
Property, plant and equipment, net	$ 1,311	$ 200
Finance Lease, Right-of-Use Asset, Statement of Financial Position	Property, plant and equipment, net	Property, plant and equipment, net
Finance Lease Liability [Abstract]
Accrued expenses and other current liabilities	$ 423	$ 96
Finance Lease, Liability, Current, Statement of Financial Position	Accrued expenses and other current liabilities	Accrued expenses and other current liabilities
Other long-term liabilities, net	$ 893	$ 98
Total finance lease liabilities	$ 1,316	$ 194
Finance Lease, Liability, Statement of Financial Position	Other long-term liabilities, Accrued expenses and other current liabilities	Other long-term liabilities, Accrued expenses and other current liabilities