Share-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized for grant (in shares)	665,397		665,397
Stock options expired (in shares)			20,000	500,000
Weighted-average exercise prices, expired (in dollars per share)			$ 18.98	$ 11.15
Costs for share-based payment arrangements	$ 3.5	$ 2.9	$ 9.1	$ 7.7
Unamortized share-based compensation expense	16.0		$ 16.0
Weighted average period over which unrecognized compensation cost is expected to be recognized			1 year 10 months 24 days
Reduction in incremental cost			$ (0.5)
Modification of fair value, incremental cost			$ 0.4
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)			590,188	375,769
Weighted-average fair values per share (in dollars per share)			$ 8.66	$ 10.53
Cash-settled Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)			901,541	315,768
Weighted-average fair values per share (in dollars per share)			$ 11.18	$ 14.89
Cash-settled Service-Based Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)			90,000
Weighted-average fair values per share (in dollars per share)			$ 8.98
Unrestricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Units granted (in shares)			302,112	165,030
Weighted-average fair values per share (in dollars per share)			$ 5.66	$ 10.63
Restricted Stock Units, Guaranteed Minimum Payouts
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Liabilities recognized for restricted stock grants	$ 5.2		$ 5.2		$ 2.1
Cash used to settle liabilities			$ 1.3	$ 3.6