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 as of December 31, 2017 and 2016 were as follows:

	Estimated Useful Lives	December 31,
In thousands		2017			2016
Land	–	$	4,289		$	3,981
Buildings and improvements	10-35 years	84,337			74,397
Machinery and equipment	5-25 years	254,881			226,675
Office equipment	2-8 years	33,880			31,504
Vehicles	3-6 years	1,706			1,553
Assets under capital leases:
Land	–	241			226
Buildings and improvements	10-35 years	221			4,806
Machinery and equipment	5-25 years	1,051			—
Office equipment	2-8 years	34			—
		380,640			343,142
Accumulated depreciation		(226,581		)	(196,251		)
Accumulated depreciation of capital leases		(239		)	(2,915		)
		153,820			143,976
Construction in progress		16,512			16,819
Total property, plant and equipment, net		$	170,332		$	160,795