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Property, Plant and Equipment
 3 Months Ended
Mar. 31, 2020
Property, Plant and Equipment [Abstract]  
Property, Plant and Equipment Property, Plant and Equipment
Property, plant and equipment consists of the following:
(In thousands)
 
March 31
2020
 
December 31
2019
Land
 
$
29,811

 
$
30,409

Land improvements
 
17,822

 
19,155

Buildings and improvements
 
180,907

 
182,795

Machinery and equipment
 
1,418,493

 
1,518,652

Uncompleted construction
 
57,327

 
55,592

Gross property, plant and equipment
 
1,704,360

 
1,806,603

Less: Accumulated depreciation
 
(1,171,011
)
 
(1,244,817
)
Property, plant and equipment, net
 
$
533,349

 
$
561,786