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Property, Plant and Equipment (Tables)
12 Months Ended
Dec. 31, 2015
Property, Plant and Equipment [Abstract]  
Summary of Property, Plant and Equipment
          December 31,  
     Estimated
Useful Life
   2015      2014  

Land owned

      $ 30,884       $ 7,548   

Land under capital lease

        1,340         2,097   

Buildings and improvements owned

   15-40 years      61,142         52,641   

Buildings under capital lease

   20 years      3,956         6,225   

Machinery and equipment

   3-12 years      432,841         408,299   

Construction in process

        16,049         21,027   
     

 

 

    

 

 

 
        546,212         497,837   

Less - accumulated depreciation

        227,244         219,395   
     

 

 

    

 

 

 

Property, plant and equipment, net

      $ 318,968       $ 278,442