Segment Information and Enterprise-Wide Disclosure (Tables)

12 Months Ended

Dec. 31, 2011

Geographic Areas, Long-Lived Assets [Abstract]

Schedule Of Revenues From External Customers And Long Lived Assets By Geographical Areas [Table Text Block]

2011		Asia		North America		Europe		Consolidated
Total sales	$	559,109	$	137,789	$	194,455	$	891,353
Inter-company sales		(82,958)		(61,907)		(111,237)		(256,102)
Net sales	$	476,151	$	75,882	$	83,218	$	635,251
Property, plant and equipment	$	162,022	$	33,684	$	29,687	$	225,393
Assets	$	494,375	$	112,863	$	185,826	$	793,064
2010		Asia		North America		Europe		Consolidated
Total sales	$	499,315	$	149,029	$	177,063	$	825,407
Inter-company sales		(54,782)		(54,909)		(102,830)		(212,521)
Net sales	$	444,533	$	94,120	$	74,233	$	612,886
Property, plant and equipment	$	137,225	$	33,115	$	30,405	$	200,745
Assets	$	444,729	$	178,018	$	223,803	$	846,550
2009		Asia		North America		Europe		Consolidated
Total sales	$	354,906	$	85,498	$	116,357	$	556,761
Inter-company sales		(27,337)		(25,752)		(69,275)		(122,404)
Net sales	$	327,569	$	59,746	$	47,082	$	434,357
Property, plant and equipment	$	97,142	$	30,123	$	35,723	$	162,988
Assets	$	380,497	$	339,518	$	301,883	$	1,021,898

Geographic Areas, Revenues from External Customers [Abstract]

Schedule of Revenue by Countries [Table Text Block]

			% of Total
2011		Revenue	Revenue
China	$	206,965	32%
Taiwan		136,129	21%
U.S.		105,588	17%
Korea		37,643	6%
Germany		30,838	5%
U.K.		30,065	5%
Singapore		23,492	4%
All others		64,531	10%
Total	$	635,251	100%
			% of Total
2010		Revenue	Revenue
China	$	187,633	31%
Taiwan		141,388	23%
U.S.		134,911	22%
Korea		35,180	6%
Germany		31,704	5%
Singapore		24,468	4%
U.K.		24,337	4%
All others		33,265	5%
Total	$	612,886	100%
			% of Total
2009		Revenue	Revenue
China	$	131,914	30%
Taiwan		122,502	28%
U.S.		75,185	17%
Korea		27,223	6%
U.K.		17,926	4%
Germany		17,438	4%
Singapore		14,429	4%
All others		27,740	7%
Total	$	434,357	100%