Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property, Plant and Equipment [Abstract]

Property, plant and equipment

Company's owned property, plant and equipment consists of the following at December 31:

	2017			2016
Land	$	10,480		$	5,412
Building and improvements	140,261			134,398
Leasehold improvements	10,806			10,520
Machinery and equipment	534,991			511,461
	696,538			661,791
Accumulated depreciation	(175,531		)	(138,372		)
	521,007			523,419
Construction in process	66,390			76,055
Total	$	587,397		$	599,474