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Property, Plant and Equipment, net (Tables)
12 Months Ended
Dec. 31, 2011
Property, Plant and Equipment, Net [Abstract]  
Property, Plant and Equipment
Property, plant and equipment, net consists of the following as of December 31,
 
 
2011
 
2010
Land and improvements
 
$
47,725

 
$
18,516

Buildings and improvements
 
217,294

 
158,453

Machinery and equipment
 
667,130

 
490,929

Furniture and fixtures
 
15,931

 
15,524

Property, plant and equipment, at cost
 
948,080

 
683,422

Less accumulated depreciation
 
465,767

 
427,324

 
 
$
482,313

 
$
256,098