Inventories - Components of Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2019	Sep. 30, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 2,409	$ 2,034
Work-in process	1,349	892
Finished products	1,193	1,575
Total	$ 4,951	$ 4,501

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

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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.

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