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Inventory Components (Details) - USD ($)
Sep. 30, 2015
Dec. 31, 2014
Inventory, Net, Items Net of Reserve Alternative [Abstract]    
Raw materials and sub-assemblies $ 2,172,717 $ 2,153,764
Finished goods 64,590 61,175
Inventory reserves (1,265,185) (1,257,612)
Inventories, net $ 972,122 $ 957,327