Other (Income) Expense, Net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Income Expense [Line Items]
Other (Income) expense, net	$ 1,826	$ 5,319	$ (737)
Gain on sale of assets [Member]
Other Income Expense [Line Items]
Other (Income) expense, net	(1,254)	(583)	(1,078)
Results of non-consolidated subsidiaries [Member]
Other Income Expense [Line Items]
Other (Income) expense, net	(125)	(208)	(203)
Foreign Currency Gain (Loss) [Member]
Other Income Expense [Line Items]
Other (Income) expense, net	1,160	1,725	2,598
Rents and royalties [Member]
Other Income Expense [Line Items]
Other (Income) expense, net	(466)	(607)	(510)
Employment Related Charges [Member]
Other Income Expense [Line Items]
Other (Income) expense, net		2,998
Return on pension assets and other pension costs [Member]
Other Income Expense [Line Items]
Other (Income) expense, net	(1,502)	(1,501)	(644)
Acquisition-related costs [Member]
Other Income Expense [Line Items]
Other (Income) expense, net			623
Gain On Sale Of Business [Member]
Other Income Expense [Line Items]
Other (Income) expense, net		(1,154)
Insurance settlement [Member]
Other Income Expense [Line Items]
Other (Income) expense, net			(707)
Cost reduction and other charges [Member]
Other Income Expense [Line Items]
Other (Income) expense, net	3,943	5,555
Loss on lease abandonment [Member]
Other Income Expense [Line Items]
Other (Income) expense, net	504
Other, net [Member]
Other Income Expense [Line Items]
Other (Income) expense, net	$ (434)	$ (906)	$ (816)