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Description Of Business And Basis Of Presentation (Average Exchange Rates) (Details) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Canadian Dollar (CAD) [Member] |  |  |  |
Currency [Line Items] |  |  |  |
Average Rates | 1.3863 | 1.3376 | 1.3646 | 1.3335
Average Rates % Change | (3.60%) |  | (2.30%) |
Euros (EUR) [Member] |  |  |  |
Currency [Line Items] |  |  |  |
Average Rates | 0.9085 | 0.8898 | 0.9080 | 0.8853
Average Rates % Change | (2.10%) |  | (2.60%) |
Polish Zloty (PLN) [Member] |  |  |  |
Currency [Line Items] |  |  |  |
Average Rates | 4.0959 | 3.8090 | 4.0090 | 3.7980
Average Rates % Change | (7.50%) |  | (5.60%) |
British Pound (GBP) [Member] |  |  |  |
Currency [Line Items] |  |  |  |
Average Rates | 0.8060 | 0.7782 | 0.7938 | 0.7732
Average Rates % Change | (3.60%) |  | (2.70%) |

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