Inventory - Schedule of Components of Inventory (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018
Inventory Disclosure [Abstract]
Purchased parts and raw materials	$ 15,192	$ 15,907
Work-in-process	4,215	4,159
Finished goods	3,183	3,072
Inventory, gross	22,590	23,138
Excess and obsolete reserves	(5,058)	(5,303)
Inventory	$ 17,532	$ 17,835

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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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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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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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