Property, Plant and Equipment, net (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment consists of:

	Estimated Useful Lives	December 31,
		2017			2016
		(In thousands)
Land improvements	10-25 years	$	7,485		$	8,585
Buildings	15-40 years	183,437			191,485
Machinery, equipment and other	3-10 years	361,959			370,578
		552,881			570,649
Less accumulated depreciation		(315,091		)	(293,854		)
		237,790			276,795
Land		13,464			12,120
Construction work in process		32,993			34,234
Total property, plant and equipment		$	284,247		$	323,149