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Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Income Tax Disclosure [Abstract]
Income tax (expense) benefit	$ (79,040)	$ (2,802)
Estimated annual effective tax rate	38.50%
Valuation allowance	$ 9,835
Common Stock [Member] \| Liberty Media [Member]
Related Party Transaction [Line Items]
Related party ownership percentage (greater than 50%)	50.00%

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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- 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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