Earnings Per Share ("EPS") (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net income (loss)	$ 3.7	$ (20.3)
Weighted Average Shares Outstanding:
Basic weighted average shares outstanding (in shares)	47.8	47.5
Dilutive effect of stock options and restricted share unit awards (in shares)	0.2	0.0
Diluted weighted average shares outstanding (in shares)	48.0	47.5
Earnings (Loss) Per Share
Basic (in dollars per share)	$ 0.08	$ (0.43)
Diluted (in earnings per share)	$ 0.08	$ (0.43)
Dilutive securities excluded from computation of earnings per share (in shares)	1.2