Inventories - Schedule of Components of Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Sep. 30, 2024
Inventory Disclosure [Abstract]
Purchased parts and raw materials	$ 10,286	$ 17,958
Work-in-process	7,570	6,934
Finished goods	1,764	1,975
Inventories	$ 19,620	$ 26,867

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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.

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

+ References

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