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Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Income Taxes (Textual)
Accounting Standards Codification Topic 740 - Income Taxes recognition threshold for uncertain tax positions	50.00%	50.00%
Income tax provision (benefit) from continuing operations	$ (38,397)	$ (37,430)
Effective tax rate from continuing operations	40.20%	36.70%
Increase Decrease In Income Tax Expense Benefit Due To Income Tax Adjustments		$ 967

- Definition

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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- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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