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