Income Taxes - Operating Loss Carryforwards (Details) - USD ($) $ in Millions		12 Months Ended
	Sep. 17, 2014	Dec. 31, 2015	Dec. 31, 2014	Sep. 16, 2014
Income Tax Disclosure [Abstract]
Rolling period over which cumulative change of ownership is required for change in control	3 years
Operating Loss Carryforwards [Line Items]
Projected annual limitation on the use of the net operating losses that existed prior to September 17, 2014				$ 0.8
Increase (decrease) in net operating loss		$ (10.7)	$ 63.2
Federal | Internal Revenue Service
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		39.3
State
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards		$ 17.0