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Property, Plant and Equipment, net (Details) - Property, plant and equipment - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross $ 2,733 $ 2,703
Less accumulated depreciation 631 523
Net property, plant and equipment 2,102 2,180
Machinery Fixture And Equipment [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross 2,721 2,691
Leaseholds and Leasehold Improvements [Member]    
Property, Plant and Equipment [Line Items]    
Property, plant and equipment, Gross $ 12 $ 12