Miscellaneous Expense (Income), Net (Components Of Miscellaneous Expense (Income), Net) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Miscellaneous Expense (Income), Net [Abstract]
Pension expense	$ 6,425	$ 14,845	$ 14,142
Argentina export tax matter		217	507
Gain on change of control			(2,586)
Modification of debt			1,046
Dividends/royalty from affiliates, net	(264)	(529)	(720)
Loss (gain) on sale of assets	87	(1,412)	(514)
Contingent consideration adjustment	(67)	(2,723)	(1,637)
Bank fees	1,498	1,798	1,656
Other, net	(2,174)	(474)	180
Total Miscellaneous expense, net	$ 5,505	$ 11,722	$ 12,074