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Inventory Components (Details) - USD ($)
Mar. 31, 2016
Dec. 31, 2015
Inventory Disclosure [Abstract]    
Raw materials and sub-assemblies $ 2,654,686 $ 2,521,585
Finished goods 77,339 39,083
Inventory reserves (1,221,255) (1,234,578)
Inventories, net $ 1,510,770 $ 1,326,090