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Property, Plant and Equipment
12 Months Ended
Dec. 31, 2012
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment
Property, Plant and Equipment
Property, plant and equipment consist of the following:
(In thousands)
 
Estimated
Useful Lives
 
December 31
2012
 
December 31
2011
Land
 
 
$
26,336

 
$
26,729

Land improvements
 
5-20 years
 
14,199

 
17,960

Buildings and improvements
 
5-40 years
 
190,078

 
186,799

Machinery and equipment
 
3-20 years
 
2,950,384

 
2,977,521

Uncompleted construction
 
 
107,633

 
66,719

Gross property, plant and equipment
 
 
 
3,288,630

 
3,275,728

Less: Accumulated depreciation
 
 
 
(2,022,405
)
 
(2,001,244
)
Property, plant and equipment, net
 
 
 
$
1,266,225

 
$
1,274,484


Buildings and improvements include leasehold improvements which are amortized over the shorter of their useful lives or the initial term of the lease.