Goodwill And Other Intangibles (Schedule Of Other Intangible Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning Balance	$ 229,624		$ 234,060
Acquisitions	1,400	[1]
Sale of assets			(65)
Foreign currency translation adjustments	6,467		(4,371)
Gross Asset Value, Ending Balance	237,491		229,624
Accumulated Amortization, Balance	(94,860)		(83,537)
Amortization	(13,149)		(12,978)
Sale of assets			65
Foreign currency translation adjustments	799		1,590
Accumulated Amortization, Balance	(107,210)		(94,860)
Net Book Value	130,281		134,764
Customer Lists And Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning Balance	100,509		102,533
Foreign currency translation adjustments	(431)		(2,024)
Gross Asset Value, Ending Balance	100,078		100,509
Accumulated Amortization, Balance	(27,050)		(23,059)
Amortization	(4,780)		(4,635)
Foreign currency translation adjustments	1,549		644
Accumulated Amortization, Balance	(30,281)		(27,050)
Net Book Value	69,797		73,459
Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning Balance	44,800		46,110
Foreign currency translation adjustments	599		(1,310)
Gross Asset Value, Ending Balance	45,399		44,800
Accumulated Amortization, Balance	(10,497)		(9,149)
Amortization	(1,658)		(1,614)
Foreign currency translation adjustments	(65)		266
Accumulated Amortization, Balance	(12,220)		(10,497)
Net Book Value	33,179		34,303
Patents And Technology [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning Balance	44,592		45,959
Acquisitions	1,400	[1]
Foreign currency translation adjustments	(19)		(1,367)
Gross Asset Value, Ending Balance	45,973		44,592
Accumulated Amortization, Balance	(30,539)		(26,714)
Amortization	(4,982)		(4,800)
Foreign currency translation adjustments	309		975
Accumulated Amortization, Balance	(35,212)		(30,539)
Net Book Value	10,761		14,053
Land Use Rights [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning Balance	7,318		7,094
Foreign currency translation adjustments	780		224
Gross Asset Value, Ending Balance	8,098		7,318
Accumulated Amortization, Balance	(484)		(280)
Amortization	(176)		(108)
Foreign currency translation adjustments	(458)		(96)
Accumulated Amortization, Balance	(1,118)		(484)
Net Book Value	6,980		6,834
Manufacturing Contracts And Supply/Service Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning Balance	12,087		12,289
Foreign currency translation adjustments	1,695		(202)
Gross Asset Value, Ending Balance	13,782		12,087
Accumulated Amortization, Balance	(10,467)		(9,398)
Amortization	(551)		(1,247)
Foreign currency translation adjustments	(95)		178
Accumulated Amortization, Balance	(11,113)		(10,467)
Net Book Value	2,669		1,620
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Asset Value, Beginning Balance	20,318		20,075
Sale of assets			(65)
Foreign currency translation adjustments	3,843		308
Gross Asset Value, Ending Balance	24,161		20,318
Accumulated Amortization, Balance	(15,823)		(14,937)
Amortization	(1,002)		(574)
Sale of assets			65
Foreign currency translation adjustments	(441)		(377)
Accumulated Amortization, Balance	(17,266)		(15,823)
Net Book Value	$ 6,895		$ 4,495

[1] The increase of $1.4 million in Patents and Technology relates to our acquisition of Catilin, Inc. as discussed in Note 22 "Acquisitions."