Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2018

Property Plant And Equipment [Abstract]

Schedule of Property Plant and Equipment

Property, plant and equipment at December 31 were:

	2018			2017
Buildings and leasehold improvements	$	208,184		$	203,054
Machinery and equipment		817,202			774,138
		1,025,386			977,192
Less:  Accumulated depreciation and amortization		(635,969	)		(581,753	)
		389,417			395,439
Construction in-progress		16,886			22,446
Land		40,532			41,284
	$	446,835		$	459,169