Segment Information and Enterprise-Wide Disclosure (Tables)

6 Months Ended

Jun. 30, 2012

Segment Information and Enterprise-Wide Disclosure [Abstract]

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

Three Months Ended		Asia		North America		Europe		Consolidated
June 30, 2012
Total sales	$	145,699	$	34,071	$	45,505	$	225,275
Inter-company sales		(23,684)		(15,881)		(26,471)		(66,036)
Net sales	$	122,015	$	18,190	$	19,034	$	159,239
Three Months Ended		Asia		North America		Europe		Consolidated
June 30, 2011
Total sales	$	150,015	$	37,224	$	61,710	$	248,949
Inter-company sales		(24,128)		(15,878)		(39,137)		(79,143)
Net sales	$	125,887	$	21,346	$	22,573	$	169,806
As Of And For The Six Months Ended		Asia		North America		Europe		Consolidated
June 30, 2012
Total sales	$	273,071	$	65,802	$	84,450	$	423,323
Inter-company sales		(40,052)		(31,045)		(48,324)		(119,421)
Net sales	$	233,019	$	34,757	$	36,126	$	303,902
Property, plant and equipment	$	168,596	$	31,127	$	27,220	$	226,943
Total assets	$	517,232	$	119,600	$	222,961	$	859,793
As Of And For The Six Months Ended		Asia		North America		Europe		Consolidated
June 30, 2011
Total sales	$	281,570	$	72,597	$	110,473	$	464,640
Inter-company sales		(38,577)		(31,210)		(63,492)		(133,279)
Net sales	$	242,993	$	41,387	$	46,981	$	331,361
Property, plant and equipment	$	162,654	$	34,459	$	32,680	$	229,793
Total assets	$	512,542	$	183,362	$	227,160	$	923,064

Schedule of Revenue by Countries [Table Text Block]

		Net Sales
		for the Three Months			Percentage of
		Ended June 30,			Net Sales
		2012		2011	2012	2011
China	$	51,658	$	53,129	32%	31%
Taiwan		31,667		36,581	20%	22%
United States		27,926		29,928	18%	18%
Korea		11,632		10,422	7%	6%
U.K.		7,853		8,510	5%	5%
Singapore		6,831		6,027	4%	3%
Germany		6,157		7,999	4%	5%
All Others (1)		15,515		17,210	10%	10%
Total	$	159,239	$	169,806	100%	100%
		Net Sales
		for the Six Months			Percentage of
		Ended June 30,			Net Sales
		2012		2011	2012	2011
China	$	100,810	$	100,565	33%	30%
Taiwan		63,448		74,261	21%	23%
United States		56,196		56,457	19%	17%
Korea		21,853		20,189	7%	6%
U.K.		12,978		17,228	4%	5%
Germany		12,939		17,456	4%	5%
Singapore		11,476		11,589	4%	4%
All Others (1)		24,202		33,616	8%	10%
Total	$	303,902	$	331,361	100%	100%