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PROPERTY, PLANT AND EQUIPMENT, NET (Tables)
12 Months Ended
Dec. 31, 2011
Property, plant and equipment, net
Property, plant and equipment, net, consist of the following:
 
 
December 31,
(in thousands)
2011
 
2010
Assets, at cost:
 
 
 
Land
$
45,840

 
$
40,032

Buildings and improvements
372,156

 
304,341

Machinery and equipment
680,240

 
576,704

Construction in progress
42,648

 
20,639

 
1,140,884

 
941,716

Less: Accumulated depreciation
549,439

 
518,611

Property, plant and equipment, net
$
591,445

 
$
423,105