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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, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Canadian Dollar (CAD) [Member] |  |  |  |  |
Currency [Line Items] |  |  |  |  |
Ending rates | 1.2945 |  | 1.2945 |  | 1.2545
Average Rates | 1.3068 | 1.2531 | 1.2874 | 1.3072 |
Average Rates % Change | (4.30%) |  | 1.50% |  |
Euros (EUR) [Member] |  |  |  |  |
Currency [Line Items] |  |  |  |  |
Ending rates | 0.8619 |  | 0.8619 |  | 0.8334
Average Rates | 0.8601 | 0.8512 | 0.8377 | 0.8997 |
Average Rates % Change | (1.10%) |  | 6.90% |  |
Polish Zloty (PLN) [Member] |  |  |  |  |
Currency [Line Items] |  |  |  |  |
Ending rates | 3.6395 |  | 3.6395 |  | 3.4841
Average Rates | 3.6981 | 3.6219 | 3.5581 | 3.8379 |
Average Rates % Change | (2.10%) |  | 7.30% |  |
British Pound (GBP) [Member] |  |  |  |  |
Currency [Line Items] |  |  |  |  |
Ending rates | 0.7671 |  | 0.7671 |  | 0.7396
Average Rates | 0.7676 | 0.7641 | 0.7405 | 0.7845 |
Average Rates % Change | (0.50%) |  | 5.60% |  |

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- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521 + Details
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