Net Income Per Common Share - Summary of Earnings Per Share Basic and Diluted (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Basic net income per common share:
Net income	$ 105.7	$ 126.3	$ 16.1
Weighted average common shares outstanding - Basic (in shares)	84.6	84.4	84.1
Basic net income per common share	$ 1.25	$ 1.5	$ 0.19
Diluted net income per common share:
Weighted average common shares outstanding - Basic (in shares)	84.6	84.4	84.1
Plus incremental shares from assumed conversions:
Weighted average common shares outstanding -Dilutive (in shares)	85.5	85.0	84.6
Dilutive net income per common share	$ 1.24	$ 1.49	$ 0.19
Anti-dilutive shares outstanding, excluded from computation (in shares)	0.3	0.8	0.6
Restricted Stock Units
Plus incremental shares from assumed conversions:
Incremental shares from assumed conversions	0.5	0.4	0.3
Stock Options
Plus incremental shares from assumed conversions:
Incremental shares from assumed conversions	0.4	0.2	0.2