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Income Taxes (Periods Subject To Examination Of Tax Returns) (Details) | 12 Months Ended
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Dec. 31, 2018
United Kingdom [Member] |
Period | 2017
Minimum [Member] | US Federal [Member] |
Period | 2007
Minimum [Member] | US State - Colorado [Member] |
Period | 2007
Minimum [Member] | Canada [Member] |
Period | 2006
Minimum [Member] | Mauritius [Member] |
Period | 2015
Minimum [Member] | Poland [Member] |
Period | 2013
Minimum [Member] | Austria [Member] |
Period | 2013
Maximum [Member] | US Federal [Member] |
Period | 2017
Maximum [Member] | US State - Colorado [Member] |
Period | 2017
Maximum [Member] | Canada [Member] |
Period | 2017
Maximum [Member] | Mauritius [Member] |
Period | 2017
Maximum [Member] | Poland [Member] |
Period | 2017
Maximum [Member] | Austria [Member] |
Period | 2017

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- Definition Tax year that remains open to examination under enacted tax laws, in CCYY format. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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