Goodwill And Other Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2013

Deferred Tax Liabilities, Goodwill and Intangible Assets [Abstract]

Schedule Of Changes In The Carrying Value Of Goodwill

	Total
	(Dollars in Thousands)
Balance as of December 31, 2012	$	498,261
Currency translation effect	(1,099		)
Balance as of June 30, 2013	$	497,162

Schedule Of Intangible Assets With Determinable Useful Lives By Major Category

	As of December 31, 2012							As of June 30, 2013
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
	(Dollars in Thousands)
Patents	$	3,520	$	(1,617	)	$	1,903	$	3,520	$	(1,729	)	$	1,791
Trade name	7,900		(2,870		)	5,030		7,900		(3,407		)	4,493
Technological know-how	43,349		(12,554		)	30,795		43,349		(15,568		)	27,781
Customer –related     intangible	110,798		(31,233		)	79,565		110,798		(37,949		)	72,849
Total finite-lived     intangible assets	$	165,567	$	(48,274	)	$	117,293	$	165,567	$	(58,653	)	$	106,914