Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

Property, plant and equipment

In thousands	December 31, 2016			December 31, 2015
Land	$	7,878		$	8,287
Facilities and equipment	650,480			654,585
Assets under capital leases	54,968			30,648
	713,326			693,520
Accumulated amortization	(524,806		)	(514,509		)
	188,520			179,011
Construction in progress	28,276			16,988
Property, plant and equipment, net	$	216,796		$	195,999