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Income Taxes (Details 2) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Other Tax Information |  |  |
Document Period End Date | Dec. 31, 2013 |  |
Revision to Deferred Tax Assets | $ 13,800,000 |  |
Valuation Allowance, Deferred Tax Asset, Change in Amount | 28,200,000 |  |
Operating Loss Carryforwards, Federal | 665,300,000 |  |
Operating Loss Carryforwards, State | 444,100,000 |  |
Income Tax Expense (Benefit) | $ 0 | $ 0 | $ 0

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