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Description Of Business And Basis Of Presentation (Average Exchange Rates) (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Canadian Dollar (CAD) [Member] |  |  |
Currency [Line Items] |  |  |
Ending rates | 1.2894 |  | 1.2545
Average Rates | 1.2643 | 1.3234 |
Average Rates % Change | 4.50% |  |
Euros (EUR) [Member] |  |  |
Currency [Line Items] |  |  |
Ending rates | 0.8126 |  | 0.8334
Average Rates | 0.8136 | 0.9384 |
Average Rates % Change | 13.30% |  |
Polish Zloty (PLN) [Member] |  |  |
Currency [Line Items] |  |  |
Ending rates | 3.4210 |  | 3.4841
Average Rates | 3.3992 | 4.0563 |
Average Rates % Change | 16.20% |  |
British Pound (GBP) [Member] |  |  |
Currency [Line Items] |  |  |
Ending rates | 0.7121 |  | 0.7396
Average Rates | 0.7186 | 0.8071 |
Average Rates % Change | 11.00% |  |

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- Definition Foreign exchange rate used to translate amounts denominated in functional currency to reporting currency. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -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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