Goodwill And Other Intangible Assets (Schedule Of Intangible Assets With Determinable Useful Lives By Major Category) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
Gross Carrying Amount	$ 162,047	$ 162,047
Accumulated Amortization & Impairment	(86,949)	(91,293)
Net Carrying Amount	75,098us-gaap_FiniteLivedIntangibleAssetsNet	70,754us-gaap_FiniteLivedIntangibleAssetsNet
Trade Name
Goodwill [Line Items]
Gross Carrying Amount	7,900	7,900
Accumulated Amortization & Impairment	(4,986)	(4,817)
Net Carrying Amount	2,914	3,083
Technological Know-How
Goodwill [Line Items]
Gross Carrying Amount	43,349	43,349
Accumulated Amortization & Impairment	(26,433)	(24,940)
Net Carrying Amount	16,916	18,409
Customer-Related Intangible
Goodwill [Line Items]
Gross Carrying Amount	110,798	110,798
Accumulated Amortization & Impairment	(59,874)	(57,192)
Net Carrying Amount	$ 50,924	$ 53,606

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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=26713463&loc=d3e16323-109275

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- Definition

Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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