Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Numerator:
Net income (loss)	$ 7.8	$ (3.5)
Denominator:
Weighted-average shares outstanding - basic (in shares)	18.6	18.6
Effect of dilutive shares (in shares)	0.1	0.0
Weighted-average shares outstanding - diluted (in shares)	18.7	18.6
Basic earnings per share (in dollars per share)	$ 0.42	$ (0.19)
Diluted earnings per share (in dollars per share)	$ 0.42	$ (0.19)