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SUPPLEMENTAL BALANCE SHEET INFORMATION - Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2025	Sep. 30, 2024
Inventories
Raw materials	$ 1,854	$ 1,868
Work in progress	50	61
Finished goods	4,763	4,174
Research model inventory	41,234	14,870
Total	47,901	20,973
Less: Obsolescence reserve	(2,827)	(2,800)
Inventories, net	$ 45,074	$ 18,173

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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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