Property, Plant and Equipment (Notes)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

PROPERTY, PLANT & EQUIPMENT

Property, plant and equipment is stated at cost. The composition of our property, plant and equipment less accumulated depreciation is set forth below:

(in thousands)	December 31, 2017		December 31, 2016
Land	$	8,859	$	6,348
Buildings	122,369		114,322
Machinery and equipment	217,791		189,489
Property under construction	6,486		22,378
	355,505		332,537
Less accumulated depreciation	213,574		198,900
Net property, plant and equipment	$	141,931	$	133,637