Trade Accounts and Financing Receivables - Financing Receivables (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Accounts Notes And Loans Receivable [Line Items]
Total financing receivables	$ 8,225	$ 7,896
Total unearned income		(6)
Total financing receivables, net of unearned income	8,225	7,890
Less current portion	(8,225)	(4,952)
Non-current notes receivable		2,938
Promissory Notes
Accounts Notes And Loans Receivable [Line Items]
Total financing receivables	$ 8,225	5,432
Sales-type Lease
Accounts Notes And Loans Receivable [Line Items]
Total financing receivables		2,464
Total unearned income		$ (6)