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Description Of Business And Basis Of Presentation (Schedule Of Exchange Rates To US Dollar) (Details)	Mar. 31, 2021	Dec. 31, 2020
Canadian Dollar (CAD) [Member]
Currency [Line Items]
Ending Rates	1.2575	1.2732
Euros (EUR) [Member]
Currency [Line Items]
Ending Rates	0.8520	0.8157
Polish Zloty (PLN) [Member]
Currency [Line Items]
Ending Rates	3.9564	3.7136
British Pound (GBP) [Member]
Currency [Line Items]
Ending Rates	0.7253	0.7325

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- Definition

Currency [Line Items]

+ References

No definition available.

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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

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