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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
 

Land and land improvements

   $ 27,036      $ 27,036   

Buildings

     69,182        69,182   

Leasehold improvements

     17,019        16,696   

Equipment

     193,539        182,987   

Furniture and fixtures

     32,722        31,412   

Construction in progress

     23,514        25,828   
  

 

 

   

 

 

 
     363,012        353,141   

Accumulated depreciation and amortization

     (156,614     (149,419
  

 

 

   

 

 

 
   $ 206,398      $ 203,722