Leases - Schedule of Financial Statement Classification of Lease Expenses Reported in Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Lessee Lease Description [Line Items]
Total lease cost	$ 3,217	$ 1,270	$ 1,005
Cost of sales
Lessee Lease Description [Line Items]
Operating lease cost	2,318	822	536
Finance lease cost	4	4	5
Short-term lease cost	25		191
Selling, general and administrative expenses
Lessee Lease Description [Line Items]
Operating lease cost	781	359	256
Finance lease cost	76	71	$ 17
Research, development and engineering
Lessee Lease Description [Line Items]
Operating lease cost	$ 13	$ 14