Share-Based Compensation - Market and Performance-Contingent Awards (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Sep. 30, 2023
Share-Based Compensation
Share-based compensation expense	$ 1.7
Performance-Contingent Awards - RSAs
Share-Based Compensation
Granted (in shares)	165,000
Fair value	$ 1.4
Share-based compensation expense	$ 0.7
RSUs
Share-Based Compensation
Granted (in shares)	2,228,184
Share-based compensation expense		$ 0.0
Performance-Contingent Awards - RSUs
Share-Based Compensation
Granted (in shares)	367,000	43,000
Fair value	$ 3.7	$ 0.4
Share-based compensation expense	$ 0.4
Shares approved for grant (in shares)			59,000