Stock-Based Compensation Expense and Employee Benefit Plans - Stock Options Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Share-based Arrangements with Employees and Nonemployees [Abstract]
Unrecognized compensation cost related to unvested stock options	$ 0.1		$ 0.1		$ 0.4
Expense expected to be recognized over remaining weighted-average period			6 months		10 months 24 days
Cash received from stock options exercised	$ 1.1	$ 2.2	$ 2.6	$ 3.6
Class A common stock
Share-based Arrangements with Employees and Nonemployees [Abstract]
Granted (in shares)	0	0	0	0
Employee Stock Option
Share-based Arrangements with Employees and Nonemployees [Abstract]
Allocated share-based compensation expense	$ 0.1	$ 1.2	$ 0.3	$ 6.7