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Property, Plant and Equipment
3 Months Ended
Mar. 31, 2012
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
6. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consisted of the following (in thousands):

 

                 
    March 31,
2012
    December 31,
2011
 

Manufacturing equipment

  $ 171,351     $ 170,304  

Land

    8,101       8,101  

Buildings and improvements

    53,662       53,539  

Office furniture and research equipment

    18,610       17,834  
   

 

 

   

 

 

 
      251,724       249,778  

Accumulated depreciation

    (191,605     (188,894
   

 

 

   

 

 

 

Total property, plant and equipment, net

  $ 60,119     $ 60,884  
   

 

 

   

 

 

 

Depreciation expense for the three months ended March 31, 2012 and 2011 was $2.7 million and $3.2 million, respectively.