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Property, Plant and Equipment
6 Months Ended
Jun. 30, 2012
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT
PROPERTY, PLANT AND EQUIPMENT
Property, plant and equipment consist of the following (in thousands): 
 
June 30, 2012
 
December 31,
2011
Land
$
1,415

 
$
1,432

Buildings and improvements
559,732

 
520,137

Machinery and equipment
270,659

 
246,584

Capitalized leases for machinery, equipment and buildings
76,195

 
76,244

 
908,001

 
844,397

Accumulated depreciation and amortization
(272,590
)
 
(235,528
)
 
635,411

 
608,869

Construction in progress
57,615

 
78,807

 
$
693,026

 
$
687,676