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Property, Plant and Equipment (Notes)
3 Months Ended
Dec. 31, 2011
Note (11) Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Disclosure [Text Block]
Property, Plant and Equipment

Property, plant and equipment consists of the following (amounts in thousands):
 
December 31, 2011
 
March 31, 2011
Land
$
46,529

 
$
46,497

Building and building improvements
372,910

 
375,611

Machinery and equipment
1,309,495

 
1,306,367

Projects in process
86,901

 
101,202

 
1,815,835

 
1,829,677

Less accumulated depreciation and amortization
1,282,183

 
1,289,164

 
$
533,652

 
$
540,513


 
Depreciation expense attributed to property, plant and equipment was $21.5 million and $65.5 million for the three and nine months ended December 31, 2011, respectively, and $23.6 million and $69.9 million for the three and nine months ended December 31, 2010, respectively.