Income Taxes Income Taxes - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Increase (decrease) in valuation allowance	$ 14.0	$ 6.3
Net operating loss carryforwards	144.3
Operating loss carryforwards, readily available	$ 59.8