Other (Income) Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement Location [Line Items]
Other (income) expense, net	$ 130	$ (23)	$ 170	$ 900
Sale of assets
Income Statement Location [Line Items]
Other (income) expense, net	(136)	(12)	(643)	(314)
Results of non-consolidated subsidiaries
Income Statement Location [Line Items]
Other (income) expense, net	(57)	(112)	(126)	(287)
Foreign exchange
Income Statement Location [Line Items]
Other (income) expense, net	1,135	139	2,221	707
Rents and royalties
Income Statement Location [Line Items]
Other (income) expense, net	(264)	(99)	(500)	(329)
Return on pension assets and other pension costs
Income Statement Location [Line Items]
Other (income) expense, net	(201)	(159)	(621)	(437)
Severance, compensation and other charges
Income Statement Location [Line Items]
Other (income) expense, net	0	0	0	1,145
Acquisition-related costs
Income Statement Location [Line Items]
Other (income) expense, net	623	0	623	0
Other, net
Income Statement Location [Line Items]
Other (income) expense, net	$ (970)	$ 220	$ (784)	$ 415