Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]
Net changes in the total valuation allowance	$ (700,000)	$ (19,300,000)	$ (11,100,000)
Cumulative undistributed earnings	534,000,000
Income tax incentives	8,035,000	10,510,000	8,684,000
Net impact of holiday tax incentives, per diluted share	$ 0.14	$ 0.18	$ 0.14
Interest on unrecognized tax	1,600,000
Penalty on unrecognized tax	1,600,000
Tax refund	8,400,000
Additional reserve for uncertain tax benefits	141,000	7,056,000	120,000
Interest and penalties included in income tax expense	0	(200,000)	(300,000)
Unrecognized tax benefits including interest and penalties	21,300,000
U.S. [Member]
Income Taxes [Line Items]
Net changes in the total valuation allowance		(19,100,000)	(10,500,000)
Operating loss carryforwards	76,000,000
Tax credit carryforwards	4,200,000
Tax credit carryforwards expiration dates	2031
Foreign Jurisdictions [Member]
Income Taxes [Line Items]
Operating loss carryforwards	6,700,000
Indefinite carryforward	37,100,000
Operating loss carryforwards expiration dates	2021
State And Local Jurisdiction [Member]
Income Taxes [Line Items]
Operating loss carryforwards	90,400,000
Tax credit carryforwards	1,700,000
Tax credit carryforwards expiration dates	2027
Thailand Tax Authorities [Member]
Income Taxes [Line Items]
Additional reserve for uncertain tax benefits		7,100,000
Minimum [Member] | U.S. [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration dates	2022
Minimum [Member] | State And Local Jurisdiction [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration dates	2017
Maximum [Member] | U.S. [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration dates	2031
Maximum [Member] | State And Local Jurisdiction [Member]
Income Taxes [Line Items]
Operating loss carryforwards expiration dates	2031
CHINA
Income Taxes [Line Items]
Income tax incentives	2,449,000	1,474,000	498,000
Income tax reconciliation tax holidays expiration date	2012
MALAYSIA
Income Taxes [Line Items]
Income tax incentives	992,000		696,000
Income tax reconciliation tax holidays expiration date	2015
THAILAND
Income Taxes [Line Items]
Income tax incentives	$ 4,594,000	$ 9,036,000	$ 7,490,000
Income tax reconciliation tax holidays expiration date	2018