Quarterly report pursuant to Section 13 or 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
3 Months Ended
Mar. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment, Gross $ 8,401 $ 8,353
Less: Accumulated depreciation (5,955) (5,854)
Total property, plant and equipment, net 2,446 2,499
Land [Member]    
Property, Plant and Equipment, Gross 504 504
Building Improvements [Member]    
Property, Plant and Equipment, Gross $ 3,107 3,059
Building Improvements [Member] | Minimum [Member]    
Property, Plant and Equipment, Estimated Useful Life 10 years  
Building Improvements [Member] | Maximum [Member]    
Property, Plant and Equipment, Estimated Useful Life 39 years  
Machinery [Member]    
Property, Plant and Equipment, Gross $ 4,126 4,126
Machinery [Member] | Minimum [Member]    
Property, Plant and Equipment, Estimated Useful Life 3 years  
Machinery [Member] | Maximum [Member]    
Property, Plant and Equipment, Estimated Useful Life 7 years  
Computer Equipment [Member]    
Property, Plant and Equipment, Gross $ 457 457
Computer Equipment [Member] | Minimum [Member]    
Property, Plant and Equipment, Estimated Useful Life 3 years  
Computer Equipment [Member] | Maximum [Member]    
Property, Plant and Equipment, Estimated Useful Life 5 years  
Furniture and Fixtures [Member]    
Property, Plant and Equipment, Gross $ 207 $ 207
Property, Plant and Equipment, Estimated Useful Life 5 years