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Property, Plant, and Equipment, at Cost (Tables)
12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Schedule Of Property, Plant, And Equipment, At Cost
 December 31,
(in thousands)
20222021
Land$37,088 $37,746 
Land improvements64,061 61,491 
Leasehold improvements1,832 1,893 
Buildings183,030 185,216 
Machinery and equipment1,279,425 1,275,828 
Construction in progress30,916 27,012 
1,596,352 1,589,186 
Less: accumulated depreciation and amortization936,354 912,416 
Net property, plant, and equipment$659,998 $676,770 
Schedule Of Useful Lives Of Property, Plant, And Equipment
We depreciate the cost of property, plant, and equipment by the straight-line method over the following estimated useful lives:
Land improvements
15 - 40 years
Buildings
10 - 46 years
Machinery and equipment
3 - 30 years