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Description Of Business And Basis Of Presentation (Schedule Of Exchange Rates To US Dollar) (Details) | Jun. 30, 2021 | Dec. 31, 2020
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Canadian Dollar (CAD) [Member] |  |
Currency [Line Items] |  |
Ending Rates | 1.2394 | 1.2732
Euros (EUR) [Member] |  |
Currency [Line Items] |  |
Ending Rates | 0.8432 | 0.8157
Polish Zloty (PLN) [Member] |  |
Currency [Line Items] |  |
Ending Rates | 3.8053 | 3.7136
British Pound (GBP) [Member] |  |
Currency [Line Items] |  |
Ending Rates | 0.7237 | 0.7325

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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/disclosureRef -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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32618-110901 + Details
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