Other (Income) Expense, Net (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Income Statement Location [Line Items]
Total other (income) expense, net	$ (143)	$ 989
Sale of assets
Income Statement Location [Line Items]
Total other (income) expense, net	(152)	(179)
Other, net
Income Statement Location [Line Items]
Total other (income) expense, net	(271)	127
Foreign exchange
Income Statement Location [Line Items]
Total other (income) expense, net	432	97
Rents and royalties
Income Statement Location [Line Items]
Total other (income) expense, net	(94)	(122)
Severance, compensation and other charges
Income Statement Location [Line Items]
Total other (income) expense, net	0	1,145
Investment Income [Member]
Income Statement Location [Line Items]
Total other (income) expense, net	$ (58)	$ (79)