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	3 Months Ended	6 Months Ended
Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	$ 292,259	$ 253,284	$ 553,392	$ 491,134
Operating income	34,864	32,942	59,208	69,454
Unallocated: Research and development expenses	(54,286)	(47,027)	(108,301)	(89,895)
Interest income	132	344	362	685
Long-lived assets	205,754	190,148	205,754	190,148	190,148
Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	113,175	103,713	219,962	201,077
Operating income	9,590	18,700	22,121	38,785
Interest income	16	121	107	270
Long-lived assets	112,251	110,153	112,251	110,153
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	73,060	76,383	148,767	147,439
Operating income	33,245	32,542	67,882	68,695
Interest income	90	195	184	353
Long-lived assets	47,177	47,000	47,177	47,000
Asia Pacific [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net sales	106,024	73,188	184,663	142,618
Operating income	46,315	28,727	77,506	51,869
Interest income	26	28	71	62
Long-lived assets	$ 46,326	$ 32,995	$ 46,326	$ 32,995

Amount, net of accumulated depreciation, depletion and amortization, of long-lived physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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