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Income Taxes (Details 5) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011 Year	Dec. 31, 2010	Dec. 31, 2009
Income Tax Holiday [Line Items]
Tax holiday award period, extension granted	2
Tax holiday award period minimum	7
Tax holiday award period maximum	9
Tax holiday award period, years scheduled to expire	2
Income taxes paid globally, net of refunds	$ 11,613	$ 9,599	$ 11,372
SINGAPORE
Income Tax Holiday [Line Items]
Tax benefits	$ 7,185	$ 6,043	$ 7,178
Tax benefits (in dollars per share)	$ 0.13	$ 0.11	$ 0.13

The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.

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