Segment Information (Schedule Of Net Sales, Operating Income, Interest Income And Long-Lived Assets By Major Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 1,172,558	$ 1,143,692	$ 1,024,173
Operating income	98,617	116,934	112,712
Unallocated: Research and development expenses	(234,796)	(222,994)	(199,071)
Interest income	679	716	1,319
Property and equipment, net	260,568	249,721
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	483,604	454,616	411,006
Operating income	56,054	41,266	55,140
Interest income	51	177	408
Property and equipment, net	120,829	120,329
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	318,179	297,572	308,619
Operating income	132,768	135,600	142,533
Interest income	536	432	771
Property and equipment, net	51,038	48,465
East Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	260,100	282,512	215,500
Operating income	106,586	125,879	85,005
Interest income	28	23	23
Property and equipment, net	4,162	3,428
Emerging Markets [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	110,675	108,992	89,048
Operating income	38,005	37,183	29,105
Interest income	64	84	117
Property and equipment, net	$ 84,539	$ 77,499