Income Taxes (Unrecognized Uncertainties (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Increase (decrease) in operating loss carryforward	$ 402,000
Deferred tax valuation allowance		$ 344,740
Increase to valuation allowance		345,000
Unrecognized uncertainties
Gross unrecognized tax benefits at beginning of period	9,000
Increase in unrecognized tax benefits	10,000
Gross unrecognized tax benefits at end of period	19,000	9,000
Amount expected to be reversed in the next twelve months	$ 10,000
Federal
Net operating loss carryforwards		515,000
Operating loss carryforwards expected to expire		$ 483,000