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Property, Plant and Equipment (Tables)
3 Months Ended
Mar. 31, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
                 
    March 31,
2012
    December 31,
2011
 

(In thousands)

               

Land

  $ 32,995     $ 32,590  

Building

    206,815       206,239  

Machinery and equipment

    668,617       660,455  

Construction-in-progress

    16,687       12,293  
   

 

 

   

 

 

 

Gross property, plant and equipment

    925,114       911,577  

Less: Accumulated depreciation

    625,234       612,359  
   

 

 

   

 

 

 

Net property, plant and equipment

  $ 299,880     $ 299,218