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3. Property, Plant and Equipment
6 Months Ended
Jun. 30, 2018
Property, Plant and Equipment [Abstract]  
3. Property, Plant and Equipment

Property, plant and equipment consist of the following:

 

   

June 30,

2018

   

December 31,

2017

 
Land   $ 2,709     $ 2,747  
Plant and buildings     82,642       82,652  
Furniture and fixtures     1,039       1,003  
Machinery and equipment     3,909       3,972  
Construction in progress     1,837       941  
GAFI property, plant & equipment     15,408       15,408  
Total gross property, plant & equipment     107,544       106,723  
Less accumulated depreciation     (29,841 )     (27,886 )
Total net property, plant & equipment   $ 77,703     $ 78,837  

 

Depreciation on the components of property, plant and equipment is calculated using the straight-line method to allocate their depreciable amounts over their estimated useful lives as follows:

 

    Years  
Plant and Buildings     20 - 30  
Machinery & Equipment     5 - 7  
Furniture & Fixtures     3 - 5  

 

For the three months ended June 30, 2018 and 2017, the Company recorded depreciation expense of $1.1 million and $1.2 million respectively. For the six months ended June 30, 2018 and 2017, the Company recorded depreciation expense of $2.3 million for each period.

 

Management is required to evaluate these long-lived assets for impairment whenever events or changes in circumstances indicate that their carrying amounts may not be recoverable. Management determined there was no impairment on the long-lived assets during the three and six months ended June 30, 2018 and 2017.