Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2017

Property Plant And Equipment [Abstract]

Schedule of Property Plant And Equipment

	2017			2016
Buildings and leasehold improvements	$	203,054		$	192,290
Machinery and equipment		774,138			685,249
		977,192			877,539
Less:  Accumulated depreciation and amortization		(581,753	)		(535,407	)
		395,439			342,132
Construction in-progress		22,446			24,049
Land		41,284			35,807
	$	459,169		$	401,988