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Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Income Tax Disclosure [Abstract]          
Income tax expense (benefit) $ (0.2) $ (0.2) $ (2.3) $ (0.1)  
Federal statutory income tax rate 35.00%   35.00%    
Unrecognized tax benefits $ 1.4   $ 1.4   $ 1.7