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Property, Plant and Equipment (Notes)
3 Months Ended
Sep. 30, 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):

 
September 30, 2011
 
March 31, 2011
Land
$
46,529

 
$
46,497

Building and building improvements
381,258

 
375,611

Machinery and equipment
1,362,484

 
1,306,367

Projects in process
87,550

 
101,202

 
1,877,821

 
1,829,677

Less accumulated depreciation and amortization
1,328,844

 
1,289,164

 
$
548,977

 
$
540,513


 

Depreciation expense attributed to property, plant and equipment was $22.0 million and $44.0 million for the three and six months ended September 30, 2011, respectively, and $23.9 million and $46.3 million for the three and six months ended September 30, 2010, respectively.