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, 2013	Dec. 31, 2012
Goodwill [Line Items]
Gross Carrying Amount	$ 165,567	$ 165,567
Accumulated Amortization	(53,464)	(48,274)
Net Carrying Amount	112,103	117,293
Patents [Member]
Goodwill [Line Items]
Gross Carrying Amount	3,520	3,520
Accumulated Amortization	1,673	1,617
Net Carrying Amount	1,847	1,903
Trade Name [Member]
Goodwill [Line Items]
Gross Carrying Amount	7,900	7,900
Accumulated Amortization	3,139	2,870
Net Carrying Amount	4,761	5,030
Technological Know-How [Member]
Goodwill [Line Items]
Gross Carrying Amount	43,349	43,349
Accumulated Amortization	14,061	12,554
Net Carrying Amount	29,288	30,795
Customer-Related Intangible [Member]
Goodwill [Line Items]
Gross Carrying Amount	110,798	110,798
Accumulated Amortization	34,591	31,233
Net Carrying Amount	$ 76,207	$ 79,565