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Goodwill And Other Intangible Assets (Schedule Of Intangible Assets With Determinable Useful Lives By Major Category) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Goodwill [Line Items] |  |
Gross Carrying Amount | $ 142,300 | $ 142,300
Accumulated Amortization | (46,294) | (33,414)
Net Carrying Amount | 96,006 | 108,886
Trade Name [Member] |  |
Goodwill [Line Items] |  |
Gross Carrying Amount | 22,500 | 22,500
Accumulated Amortization | (7,721) | (5,512)
Net Carrying Amount | 14,779 | 16,988
Technological Know-How [Member] |  |
Goodwill [Line Items] |  |
Gross Carrying Amount | 55,300 | 55,300
Accumulated Amortization | (23,503) | (17,265)
Net Carrying Amount | 31,797 | 38,035
Customer Related Intangible [Member] |  |
Goodwill [Line Items] |  |
Gross Carrying Amount | 64,500 | 64,500
Accumulated Amortization | (15,070) | (10,637)
Net Carrying Amount | $ 49,430 | $ 53,863

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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://fasb.org/us-gaap/role/ref/legacyRef -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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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 after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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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