Restructuring And Optimization Programs (Summary Of Accruals Related To Restructuring And Optimization Programs) (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($)
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 2,239
Restructuring charges	12,231
Cash payments	(4,972)
Non-cash items	378
Ending balance	9,876
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	747
Restructuring charges	9,792
Cash payments	(4,236)
Non-cash items	280
Ending balance	6,583
Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	1,492
Restructuring charges	2,439
Cash payments	(736)
Non-cash items	98
Ending balance	$ 3,293