Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Sep. 30, 2017
Inventory Disclosure [Abstract]
Finished products	$ 6,913	$ 8,121
Semi-finished products	8,580	7,171
Raw materials and supplies	8,337	9,662
Inventories	$ 23,830	$ 24,954

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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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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