Property, Plant and Equipment, Net

12 Months Ended

Dec. 31, 2018

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net

Property, Plant and Equipment, Net

Property, plant and equipment as of December 31, 2018 and 2017 were as follows:

	Estimated Useful Lives	December 31,
In thousands		2018			2017
Land	–	$	6,280		$	4,289
Buildings and improvements	10-35 years	104,036			84,337
Machinery and equipment	5-25 years	289,059			254,881
Office equipment	2-8 years	36,110			33,880
Vehicles	3-6 years	1,640			1,706
Assets under capital leases:
Land	–	228			241
Buildings and improvements	10-35 years	229			221
Machinery and equipment	5-25 years	1,005			1,051
Office equipment	2-8 years	32			34
		438,619			380,640
Accumulated depreciation		(244,098		)	(226,581		)
Accumulated depreciation of capital leases		(608		)	(239		)
		193,913			153,820
Construction in progress		19,456			16,512
Total property, plant and equipment, net		$	213,369		$	170,332

Depreciation expense was $23.4 million in 2018, $21.4 million in 2017, and $17.8 million in 2016.