Property, Plant and Equipment

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment consist of the following:

(In thousands)	Estimated Useful Lives	December 31 2019			December 31 2018
Land	—	$	30,409		$	10,143
Land improvements	5-20 years	19,155			15,961
Buildings and improvements (a)	5-40 years	182,795			163,037
Machinery and equipment	3-20 years	1,518,652			1,470,620
Uncompleted construction	—	55,592			36,968
Gross property, plant and equipment		1,806,603			1,696,729
Less: Accumulated depreciation		(1,244,817		)	(1,263,936		)
Property, plant and equipment, net		$	561,786		$	432,793

(a) Buildings and improvements include leasehold improvements that are amortized over the shorter of their useful lives or the initial term of the lease.