Annual report pursuant to Section 13 and 15(d)

Inventories, Net (Components of Inventories) (Detail)

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Inventories, Net (Components of Inventories) (Detail) - USD ($)
Dec. 31, 2018
Dec. 31, 2017
Inventory Disclosure [Line Items]    
Purchased Parts and Components $ 3,284,848 $ 1,669,209
Work in Process 1,523,616 25,090
Finished Goods 2,837,183 2,994,342
Less: Reserve for Obsolescence (363,845) (836,324)
Inventories, Net $ 7,281,802 $ 3,852,317