Income Taxes (Schedule Of Income From Continuing Operations Before Income Taxes) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income (loss) before income taxes:
Domestic		$ 17,663	$ 67,549	$ 26,284
Foreign		18,705	(82,461)	1,399
Income (loss) before income taxes		36,368	(14,912)	27,683
Current income tax expense (benefit):
Federal		(187)	(20,560)	4,302
State		815	800	(709)
Foreign		2,090	3,247	3,255
Current income taxes, Total		2,718	(16,513)	6,848
Deferred income tax expense (benefit):
Federal		8,708	(23,302)	(2,505)
State		364	(949)	1,396
Foreign		(264)	(12,399)	(2,522)
Deferred income taxes, Total		8,808	(36,650)	(3,631)
Total income tax expense (benefit)	[1]	$ 11,526	$ (53,163)	$ 3,217

[1] See Notes 1, 3, 4 and 17 for more information on losses associated with plant shutdowns, asset impairments and restructurings, unusual items, gains or losses from sale of assets, gains or losses on an investment accounted for under the fair value method and other items.