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Inventories - Schedule of Inventories (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Inventory Disclosure [Abstract]
Raw material and component parts	$ 4,220,724	$ 4,969,786
Work-in-process	334,967	351,451
Finished goods	5,161,430	4,965,594
Subtotal	9,717,121	10,286,831
Reserve for excess and obsolete inventory	(3,335,408)	(3,287,771)
Total	$ 6,381,713	$ 6,999,060

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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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