Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details)

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Property, Plant and Equipment - Schedule of Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Property, Plant and Equipment, Gross $ 8,213 $ 8,309
Less: Accumulated depreciation 5,471 5,134
Property, Plant and Equipment, Net 2,742 3,175
Land [Member]    
Property, Plant and Equipment, Gross 504 504
Building and Improvements [Member]    
Property, Plant and Equipment, Gross $ 3,059 3,016
Building and Improvements [Member] | Minimum [Member]    
Property, Plant and Equipment, Estimated Useful Lives (in years) 10 years  
Building and Improvements [Member] | Maximum [Member]    
Property, Plant and Equipment, Estimated Useful Lives (in years) 39 years  
Machinery and Equipment [Member]    
Property, Plant and Equipment, Gross $ 4,099 4,274
Machinery and Equipment [Member] | Minimum [Member]    
Property, Plant and Equipment, Estimated Useful Lives (in years) 3 years  
Machinery and Equipment [Member] | Maximum [Member]    
Property, Plant and Equipment, Estimated Useful Lives (in years) 7 years  
Computer Equipment and Software [Member]    
Property, Plant and Equipment, Gross $ 355 319
Computer Equipment and Software [Member] | Minimum [Member]    
Property, Plant and Equipment, Estimated Useful Lives (in years) 3 years  
Computer Equipment and Software [Member] | Maximum [Member]    
Property, Plant and Equipment, Estimated Useful Lives (in years) 5 years  
Furniture and Fixtures [Member]    
Property, Plant and Equipment, Gross $ 196 $ 196
Property, Plant and Equipment, Estimated Useful Lives (in years) 5 years