Income Taxes (Details) (USD $)	3 Months Ended	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010	Dec. 31, 2010
Income Taxes
Unrecognized tax benefits	$ 15,400,000		$ 15,400,000		$ 15,000,000
Gross increase (decrease) in unrecognized tax benefits	853,000	(3,700,000)	3,600,000	(3,700,000)
Estimated amount of tax benefits to be recognized in the next twelve months	2,200,000		2,200,000
Accrued for interest related to uncertain tax positions	618,000		618,000
Effective tax rate	(24.00%)	14.00%	12.00%	12.00%
U.S. federal statutory rate	35.00%	35.00%	35.00%	35.00%
Hungarian statutory tax rate	19.00%	19.00%	19.00%	19.00%
Tax benefit recognized due to differences in Hungarian statutory rates from the statutory U.S. tax rate	1,400,000	4,000,000	8,800,000	9,900,000
Tax benefits resulting from the partial release of the valuation allowance on assets from the restructuring and the enhanced tax deduction for research expenses in Hungary	$ 2,200,000	$ 4,500,000	$ 12,200,000	$ 12,300,000

The foreign statutory tax rate applicable under enacted tax laws to the company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The tax benefits resulting from the partial release of the valuation allowance on assets from the restructuring and the enhanced tax deduction for research expenses.

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The gross amount of all increases in unrecognized tax benefits for the period.

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A ratio calculated by dividing the reported amount of income tax expense attributable to continuing operations for the period by GAAP-basis pretax income from continuing operations.

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to total foreign income tax expense or benefit. The foreign income tax expense or benefit difference represents the income tax expense or benefit at applicable domestic statutory income tax rates applied to foreign earnings or loss for the period versus the foreign income tax expense or benefit calculated by applying the appropriate foreign tax rates.

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The amount of the unrecognized tax benefit of a position taken for which it is reasonably possible that the total amount thereof will significantly increase or decrease within twelve months of the balance sheet date.

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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-Glossary Unrecognized Tax Benefit

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This element represents the total of accruals as of the date of the statement of financial position for interest recognized for an underpayment of income taxes computed by applying the applicable statutory rate of interest to the difference between a tax position recognized for financial reporting purposes and the amount previously taken or expected to be taken in a tax return of the entity and the amount of statutory penalties for a tax position claimed or expected to be claimed by the entity, in its tax return, that does not meet the minimum statutory threshold to avoid payment of penalties.

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