Segment Information and Enterprise-Wide Disclosure (Tables)

3 Months Ended

Mar. 31, 2012

Segment Information and Enterprise-Wide Disclosure [Abstract]

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

As Of And For The Three Months Ended		Asia		North America		Europe		Consolidated
March 31, 2012
Total sales	$	127,371	$	31,732	$	38,945	$	198,048
Inter-company sales		(16,368)		(15,164)		(21,853)		(53,385)
Net sales	$	111,003	$	16,568	$	17,092	$	144,663
Property, plant and equipment	$	165,929	$	32,113	$	29,286	$	227,328
Total assets	$	507,538	$	118,657	$	221,613	$	847,808
As Of And For The Three Months Ended		Asia		North America		Europe		Consolidated
March 31, 2011
Total sales	$	131,555	$	35,373	$	48,763	$	215,691
Inter-company sales		(14,449)		(15,332)		(24,355)		(54,136)
Net sales	$	117,106	$	20,041	$	24,408	$	161,555
Property, plant and equipment	$	142,228	$	34,572	$	30,536	$	207,336
Total assets	$	471,105	$	183,841	$	226,852	$	881,798

Schedule of Revenue by Countries [Table Text Block]

		Net Sales
		for the Three Months			Percentage of
		Ended March 31,			Net Sales
		2012		2011	2012	2011
China	$	49,152	$	47,436	34%	29%
Taiwan		31,781		37,680	22%	23%
United States		28,270		26,529	20%	17%
Korea		10,221		9,767	7%	6%
Germany		6,782		9,457	5%	6%
U.K.		5,125		8,718	3%	6%
Singapore		4,645		5,562	3%	3%
All Others (1)		8,687		16,406	6%	10%
Total	$	144,663	$	161,555	100%	100%