Income Taxes (Details 2) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Tax Information
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ 54,800,000
Operating Loss Carryforwards, Federal	725,900,000
Operating Loss Carryforwards, State	315,400,000
Income Tax Expense (Benefit)	$ 0	$ 0	$ (70,000)