Property, Plant, and Equipment

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Property, Plant, and Equipment

PROPERTY, PLANT, AND EQUIPMENT

Property, plant and equipment consisted of the following:

	December 31,
(in thousands)	2021		2020
Land and land improvements	$	134,913	$	140,209
Buildings and improvements	309,821		316,529
Software	44,295		37,638
Machinery, equipment and other	906,651		854,650
	1,395,680		1,349,026
Accumulated depreciation	(618,867)		(494,490)
Property, plant and equipment, net	$	776,813	$	854,536

Depreciation expense was $149.8 million, $142.6 million, and $68.6 million for the years ended December 31, 2021, 2020, and 2019, respectively.