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Income Taxes - Schedule of Current and Deferred Income Tax Assets (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Current Income Tax Assets	$ 5.4	$ 2.5
Deferred Income Tax Assets	6.6	10.7
Valuation Allowance for State Income Taxes	6.6	6.8
Current and Deferred Income Tax Assets	$ 5.4	$ 6.4

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

Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

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