Foreign Operations, Geographic Area and Product Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Net Sales to Unaffiliated Customers	$ 106,849	$ 132,715	$ 136,547	$ 139,909	$ 191,685	$ 267,959	$ 264,815	$ 254,676	$ 516,020	$ 979,135	$ 930,892
Long-Lived Tangible Assets	98,302				88,408				98,302	88,408	42,320
United States
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Net Sales to Unaffiliated Customers									83,317	100,635	92,646
Long-Lived Tangible Assets	74,497				67,788				74,497	67,788	41,072
Other | Net Sales to Customers | Geographic Concentration Risk | Maximum
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Percentage of net sales of customers to total net sales									1.00%
Europe, Middle East and Africa
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Net Sales to Unaffiliated Customers									41,708	57,617	92,112
Long-Lived Tangible Assets	36				203				36	203	274
Asia Pacific
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Net Sales to Unaffiliated Customers									390,995	820,883	746,134
Long-Lived Tangible Assets	$ 23,769				$ 20,417				$ 23,769	$ 20,417	$ 974
South Korea | Net Sales to Customers | Geographic Concentration Risk
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Percentage of net sales of customers to total net sales											32.30%
China | Net Sales to Customers | Geographic Concentration Risk
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Percentage of net sales of customers to total net sales									42.00%	66.40%	28.70%
Taiwan | Net Sales to Customers | Geographic Concentration Risk
Net sales attributable to the geographic location in which the customer facility is located and long-lived assets related to operations in United States and other foreign countries
Percentage of net sales of customers to total net sales									11.40%		10.90%