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Property, Plant and Equipment (Tables)
3 Months Ended
Mar. 31, 2013
Property, Plant and Equipment [Abstract]  
Schedule of property, plant and equipment
Property, plant and equipment consists of the following:
(In thousands)
 
March 31
2013
 
December 31
2012
Land
 
$
25,645

 
$
26,336

Land improvements
 
14,279

 
14,199

Buildings and improvements
 
195,349

 
190,078

Machinery and equipment
 
2,905,105

 
2,950,384

Uncompleted construction
 
107,725

 
107,633

Gross property, plant and equipment
 
3,248,103

 
3,288,630

Less: Accumulated depreciation
 
(2,008,435
)
 
(2,022,405
)
Property, plant and equipment, net
 
$
1,239,668

 
$
1,266,225