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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2015
Summary of Property, Plant and Equipment

Property, plant and equipment at December 31, 2015 and 2014 consist of the following:

 

     2015      2014      Estimated
useful lives		  

Land

    $ 2,458       $ 2,458      

Buildings and improvements

      14,726         14,380         10 to 30 years   

Machinery and equipment

      113,506         107,899         3 to 15 years   

Office furniture, fixtures and equipment

      4,997         4,698         3 to 10 years   

Automotive equipment

      491         374         3 to 6 years   

Construction in progress

      3,413         3,432      
  

 

 

     

 

 

     
     139,591         133,241      

Less accumulated depreciation

      (91,619 )       (83,215 )    
  

 

 

     

 

 

     
   $ 47,972       $ 50,026