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Goodwill And Other Intangible Assets (Schedule Of Intangible Assets, Net Of Amortization) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 33,062 | $ 16,980
Less accumulated amortization | (9,824) | (7,211)
Intangible assets, net | $ 23,238 | $ 9,769
Weighted average useful life | 14 years 4 months 24 days | 14 years 10 months 24 days
Customer Lists And Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 26,166 | $ 13,942
Less accumulated amortization | (7,841) | (5,843)
Intangible assets, net | $ 18,325 | $ 8,099
Weighted average useful life | 15 years 1 month 6 days | 15 years 3 months 18 days
Product Technologies [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 4,849 | $ 2,091
Less accumulated amortization | (1,203) | (745)
Intangible assets, net | $ 3,646 | $ 1,346
Weighted average useful life | 12 years | 14 years
Trade Names and Trademarks [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 1,100 |
Less accumulated amortization | (62) |
Intangible assets, net | $ 1,038 |
Weighted average useful life | 10 years |
Core Technologies [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 947 | $ 947
Less accumulated amortization | (718) | (623)
Intangible assets, net | $ 229 | $ 324
Weighted average useful life | 10 years | 10 years

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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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