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Description Of Business And Basis Of Presentation (Average Exchange Rates) (Details) | 3 Months Ended | 9 Months Ended
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Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Canadian Dollar (CAD) [Member] |  |  |  |
Currency [Line Items] |  |  |  |
Average Rates | 1.2593 | 1.3325 | 1.2515 | 1.3539
Average Rates % Change | 5.50% |  | 7.60% |
Euros (EUR) [Member] |  |  |  |
Currency [Line Items] |  |  |  |
Average Rates | 0.8482 | 0.8557 | 0.8360 | 0.8905
Average Rates % Change | 0.90% |  | 6.10% |
Polish Zloty (PLN) [Member] |  |  |  |
Currency [Line Items] |  |  |  |
Average Rates | 3.8721 | 3.8013 | 3.8013 | 3.9397
Average Rates % Change | (1.90%) |  | 3.50% |
British Pound (GBP) [Member] |  |  |  |
Currency [Line Items] |  |  |  |
Average Rates | 0.7254 | 0.7745 | 0.7221 | 0.7874
Average Rates % Change | 6.30% |  | 8.30% |

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