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Property, Plant and Equipment, net (Details) - USD ($)
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Property, Plant and Equipment, net (Details) [Line Items]      
Depreciation $ 54,000 $ 72,000  
Machinery Fixture And Equipment [Member]      
Property, Plant and Equipment, net (Details) [Line Items]      
Pledged Assets, Other, Not Separately Reported on Statement of Financial Position $ 2,100,000   $ 2,200,000