Property, Plant and Equipment (Tables)

6 Months Ended

Jun. 30, 2018

Property Plant And Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, plant and equipment were comprised of the following:

	June 30, 2018			December 31, 2017
Land and land improvements	$	11,887		$	12,172
Buildings		67,783			68,572
Machinery and equipment		340,650			340,396
Construction-in-process		7,456			5,019
Other		7,379			7,193
		435,155			433,352
Accumulated depreciation and amortization		(228,165	)		(218,372	)
Property, plant and equipment, net	$	206,990		$	214,980