Leases - Schedule of Financial Statement Classification of Lease Expenses Reported in Consolidated Statements of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2022
Lessee Lease Description [Line Items]
Total lease cost	$ 3,739	$ 3,217	$ 1,270
Cost of sales
Lessee Lease Description [Line Items]
Operating lease cost	2,202	2,318	822
Finance lease cost	2	4	4
Short-term lease cost	0	25	0
Selling, general and administrative expenses
Lessee Lease Description [Line Items]
Operating lease cost	1,409	781	359
Finance lease cost	114	76	71
Research, development and engineering
Lessee Lease Description [Line Items]
Operating lease cost	$ 12	$ 13	$ 14