Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property, plant and equipment was comprised of the following as of June 30, 2017 and December 31, 2016:

	June 30, 2017			December 31, 2016
Land and improvements	$	70,889		$	71,002
Buildings and improvements	282,792			265,824
Machinery and equipment	950,951			864,337
Construction in progress	176,643			153,924
	1,481,275			1,355,087
Accumulated depreciation	(594,300		)	(522,818		)
Property, plant and equipment, net	$	886,975		$	832,269