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Income Taxes (Details) (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Income Taxes (Textual)
Reduction of company's liabilities for uncertain tax positions due to settlements and closures of various tax years	$ 3,637	$ 14,230
Reclassified deferred tax liability to liability for uncertain tax position	4,000
Reduction in income tax expense	$ 8,665

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Income Taxes Textual Abstract.

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Reclassified deferred tax liability to liability for uncertain tax position.

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Reduction of company's liabilities for uncertain tax positions due to settlements and closures of various tax years.

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