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Inventories - Schedule of Components of Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Sep. 30, 2025
Inventory Disclosure [Abstract]
Purchased parts and raw materials	$ 10,243	$ 9,763
Work-in-process	8,308	7,113
Finished goods	1,918	1,867
Inventories	$ 20,469	$ 18,743

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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