Description Of Business And Basis Of Presentation (Average Exchange Rates) (Details)	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Canadian Dollar (CAD) [Member]
Currency [Line Items]
Average Rates	1.3294	1.2643
Average Rates % Change	(5.10%)
Euros (EUR) [Member]
Currency [Line Items]
Average Rates	0.8808	0.8136
Average Rates % Change	(8.30%)
Polish Zloty (PLN) [Member]
Currency [Line Items]
Average Rates	3.7869	3.3992
Average Rates % Change	(11.40%)
British Pound (GBP) [Member]
Currency [Line Items]
Average Rates	0.7683	0.7186
Average Rates % Change	(6.90%)