Property, Plant and Equipment (Tables)

9 Months Ended

Sep. 30, 2017

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment

Property, plant and equipment consists of the following:

(In thousands)	September 30 2017			December 31 2016
Land	$	10,965		$	10,606
Land improvements	15,567			15,032
Buildings and improvements	195,739			185,657
Machinery and equipment	1,606,633			1,525,156
Uncompleted construction	23,490			21,035
Gross property, plant and equipment	1,852,394			1,757,486
Less: Accumulated depreciation	(1,373,253		)	(1,267,231		)
Property, plant and equipment, net	$	479,141		$	490,255