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Income Taxes (Details 2) (USD $)	12 Months Ended
Income Taxes (Details 2) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Other Tax Information
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ 33,500,000
Operating Loss Carryforwards, Federal	602,500,000
Operating Loss Carryforwards, State	394,300,000
Income Tax Expense (Benefit)	$ 0	$ 0	$ (26,000)

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible state and local operating loss carryforwards.

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

The amount of the change in the period in the valuation allowance for a specified deferred tax asset.