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Property, Plant and Equipment (Tables)
 12 Months Ended
Dec. 31, 2013
Summary of Property, Plant and Equipment

Property, plant and equipment at December 31, 2013 and 2012 consist of the following:

 

     2013     2012     Estimated
useful lives		  

Land

    $ 2,458      $ 2,458     

Buildings and improvements

      14,167        12,537        10 to 30 years   

Machinery and equipment

      94,184        89,089        3 to 15 years   

Office furniture, fixtures and equipment

      9,717        8,400        3 to 10 years   

Automotive equipment

      278        312        3 to 6 years   

Construction in progress

      10,615        3,363     
  

 

 

    

 

 

    
     131,419        116,159     

Less accumulated depreciation

      (78,951 )      (70,458 )   
  

 

 

    

 

 

    
   $ 52,468      $ 45,701