Property, Plant and Equipment - Components (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Property, Plant and Equipment
Gross property, plant and equipment	$ 1,932,754	$ 1,904,406
Less: Accumulated depreciation	(1,267,563)	(1,247,531)
Property, plant and equipment, net	665,191	656,875
Land
Property, Plant and Equipment
Gross property, plant and equipment	71,987	72,020
Land improvements
Property, Plant and Equipment
Gross property, plant and equipment	16,843	16,750
Buildings and improvements
Property, Plant and Equipment
Gross property, plant and equipment	219,332	217,926
Machinery and equipment
Property, Plant and Equipment
Gross property, plant and equipment	1,539,171	1,513,238
Uncompleted construction
Property, Plant and Equipment
Gross property, plant and equipment	$ 85,421	$ 84,472

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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