Supplemental Balance Sheet Information - Components of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Sep. 30, 2021
Inventory Disclosure [Abstract]
Raw materials	$ 5,452	$ 4,165
Work-in process	1,828	1,295
Finished products	2,191	1,300
Total	$ 9,471	$ 6,760

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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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