Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Sep. 30, 2020
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 5,443	$ 6,548
Work-in-process	5,142	3,786
Finished goods	5,279	5,235
Total inventories	$ 15,864	$ 15,569

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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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Gross amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed.

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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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