Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant, and Equipment

The table below sets forth the components of property, plant and equipment as of December 31, 2018 and 2017:

(in thousands)	2018		2017		Estimated useful life
Land and land improvements	$14,287		$14,853		25 years for improvements
Buildings	245,805		239,127		15 to 40 years
Machinery and equipment	989,925		950,519		5 to 15 years
Furniture and fixtures	8,091		8,861		5 years
Computer and other equipment	16,473		15,610		3 to 10 years
Software	60,182		57,847		5 to 8 years
Capital expenditures in progress	46,749		63,951
Property, plant and equipment, gross	1,381,512		1,350,768
Accumulated depreciation and amortization	(919,457	)	(896,466	)
Property, plant and equipment, net	$462,055		$454,302