Stock-Based Compensation - Performance Shares (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Stock Based Compensation
Compensation expense (reversal)	$ 3.0	$ 5.4
Performance shares
Stock Based Compensation
Vesting period	3 years
Compensation expense (reversal)			$ 0.0
Performance shares | Share-based Payment Arrangement, Tranche One, TSR
Stock Based Compensation
Vesting (as a percent)	50.00%
Performance shares | Share-based Payment Arrangement, Tranche Two, EBITDA metric
Stock Based Compensation
Vesting (as a percent)	50.00%
Vesting period	3 years