Description Of Business And Basis Of Presentation (Schedule Of Exchange Rates To US Dollar) (Details)	Jun. 30, 2020	Dec. 31, 2019
Canadian Dollar (CAD) [Member]
Currency [Line Items]
Ending Rates	1.3628	1.2988
Euros (EUR) [Member]
Currency [Line Items]
Ending Rates	0.8904	0.8906
Polish Zloty (PLN) [Member]
Currency [Line Items]
Ending Rates	3.9628	3.7873
British Pound (GBP) [Member]
Currency [Line Items]
Ending Rates	0.8097	0.7563