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Goodwill And Other Intangible Assets (Schedule Of Intangible Assets, Net Of Amortization) (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
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Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 32,915 | $ 33,062
Less accumulated amortization | (12,656) | (9,824)
Intangible assets, net | 20,259 | 23,238
Customer Lists And Relationships [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | 26,084 | 26,166
Product Technologies [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | 4,784 | 4,849
Trade Names and Trademarks [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | 1,100 | 1,100
Core Technologies [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Intangible assets, gross | $ 947 | $ 947

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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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