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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, 2014
Sep. 30, 2013
Mar. 31, 2014
Trade Name [Member]
Dec. 31, 2013
Trade Name [Member]
Mar. 31, 2014
Technological Know-How [Member]
Dec. 31, 2013
Technological Know-How [Member]
Mar. 31, 2014
Customer-Related Intangible [Member]
Dec. 31, 2013
Customer-Related Intangible [Member]
Goodwill [Line Items]                
Gross Carrying Amount $ 162,047 $ 162,047 $ 7,900 $ 7,900 $ 43,349 $ 43,349 $ 110,798 $ 110,798
Accumulated Amortization (67,190) (71,943) 4,163 3,944 20,089 18,582 47,691 44,664
Net Carrying Amount $ 94,857 $ 90,104 $ 3,737 $ 3,956 $ 23,260 $ 24,767 $ 63,107 $ 66,134