Property, Plant and Equipment (Tables)

3 Months Ended

Mar. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

Property, plant and equipment consists of the following:

	March 31, 2019			December 31, 2018
Land and improvements	$	72,210		$	72,931
Buildings and improvements	314,061			313,722
Machinery and equipment	1,097,801			1,076,369
Construction in progress	194,401			192,533
	1,678,473			1,655,555
Accumulated depreciation	(687,808		)	(671,314		)
Property, plant and equipment, net	$	990,665		$	984,241