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3. Property, Plant and Equipment (Tables)
 6 Months Ended
Jun. 30, 2017
Statement of Operations Data  
Schedule of Property, plant and equipment
   

June 30,

2017

    

December 31,

2016

  
Land   $ 2,740     $ 2,713  
Plant and buildings     82,341       81,755  
Furniture and fixtures     603       572  
Machinery and equipment     4,326       4,308  
Construction in progress     539       88  
Total gross property, plant & equipment     90,549       89,436  
Less accumulated depreciation     (25,529 )     (23,066 )
Total net property, plant & equipment   $ 65,020     $ 66,370  
Depreciation of property, plant, and equipment
     Years  
 Plant and Buildings     20-30  
 Machinery & Equipment     5-7  
 Furniture & Fixtures     3-5