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Inventory (Details) - USD ($)
Mar. 31, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw Materials $ 742,000 $ 778,000
Work In Process 193,000 184,000
Finished Goods 314,000 325,000
Allowance for slow moving and obsolete inventory (276,000) (268,000)
Inventory, Net, Total $ 973,000 $ 1,019,000