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3. Property, Plant and Equipment (Details) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Schedule of warrant activity    
Land $ 2,724 $ 2,727
Plant and Buildings 81,975 81,821
Furniture and fixtures 504 494
Machinery and equipment 4,314 4,052
Construction in progress 25 147
Total gross property, plant & equipment 89,542 89,241
Less accumulated depreciation (21,999) (18,523)
Total net property, plant & equipment $ 67,543 $ 70,718