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Inventory (Details) - USD ($)
Sep. 30, 2017
Dec. 31, 2016
Inventory [Line Items]    
Raw Materials $ 1,053,000 $ 1,028,000
Work In Process 438,000 385,000
Finished Goods 424,000 618,000
Allowance for slow moving and obsolete inventory (453,000) (449,000)
Inventory, Net, Total $ 1,462,000 $ 1,582,000