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Property, Plant and Equipment (Tables)
6 Months Ended
Jun. 30, 2016
Summary of Property, Plant and Equipment

Property, plant and equipment at June 30, 2016 and December 31, 2015 consists of the following:

 

     June 30,
2016
     December 31,
2015
 

Land

   $ 2,458       $ 2,458   

Buildings and improvements

     15,020         14,726   

Machinery and equipment

     116,928         113,506   

Office furniture, fixtures and equipment

     4,947         4,997   

Automotive equipment

     508         491   

Construction in progress

     1,334         3,413   
  

 

 

    

 

 

 
     141,195         139,591   

Less accumulated depreciation

     (95,807      (91,619
  

 

 

    

 

 

 
   $ 45,388       $ 47,972