Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2017

Property, Plant and Equipment [Abstract]

Schedule of property, plant and equipment

Property, plant and equipment consists of the following:

(In thousands)	March 31 2017			December 31 2016
Land	$	10,707		$	10,606
Land improvements	15,233			15,032
Buildings and improvements	187,435			185,657
Machinery and equipment	1,559,320			1,525,156
Uncompleted construction	19,039			21,035
Gross property, plant and equipment	1,791,734			1,757,486
Less: Accumulated depreciation	(1,308,463		)	(1,267,231		)
Property, plant and equipment, net	$	483,271		$	490,255