Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property, plant and equipment consists of the following:

	June 30, 2019			December 31, 2018
Land and improvements	$	72,459		$	72,931
Buildings and improvements	313,487			313,722
Machinery and equipment	1,122,323			1,076,369
Construction in progress	202,311			192,533
	1,710,580			1,655,555
Accumulated depreciation	(716,647		)	(671,314		)
Property, plant and equipment, net	$	993,933		$	984,241