Income Per Common Share Computations (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount		0.4
Net income (loss)	$ 2.8	$ (1.6)
Participating Securities, Distributed and Undistributed Earnings (Loss), Basic	0.1	0.0
Income (Loss) from Continuing Operations, Basic	(2.7)	1.6
Net Income (Loss) Available to Common Stockholders, Diluted	$ 2.8	$ (1.6)
Earnings Per Share, Basic and Diluted [Abstract]
Basic	16.5	17.3
Plus dilutive effect of stock options and restricted stock	0.2	0.0
Plus dilutive effect of participating securities	0.3	0.0
Diluted	17.0	17.3
Earnings Per Share, Diluted [Abstract]
Basic	$ 0.17	$ (0.09)
Diluted	$ 0.16	$ (0.09)