Stock-Based Compensation - Narrative (Details) $ / shares in Units, $ in Millions				3 Months Ended		9 Months Ended
	Jan. 31, 2023 USD ($) shares	Jan. 06, 2023 shares	Jan. 30, 2020 shares	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) $ / shares shares	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) $ / shares
Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based restricted stock granted (in shares)						426,655
Weighted average fair value per share (in dollars per share) | $ / shares				$ 12.78		$ 12.78		$ 11.40
Vested in period (in shares)						522,572
Restricted Stock Units | Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized to be issued under the plan (in shares)				12,000,000		12,000,000
Unrecognized compensation expense related to unvested stock | $				$ 9.3		$ 9.3
Weighted average remaining vesting period of unrecognized compensation expense						11 months 23 days
Stock-based compensation expense | $				$ 1.7	$ 1.5	$ 5.3	$ 4.2
Restricted Stock Units | Long Term Incentive Plan | Class A Common Stock | Bold Contribution Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock that each holder has contingent right to receive (in shares)						1
2023 RTSR PSUs | Long Term Incentive Plan | Grant Date 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based restricted stock granted (in shares)		258,150
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based restricted stock granted (in shares)						559,325
Relative total shareholder return, percentage						1.0
Risk-free interest rate						3.89%
Expected volatility, minimum (as a percent)						40.60%
Expected volatility, maximum (as a percent)						142.50%
Weighted average fair value per share (in dollars per share) | $ / shares				$ 14.85		$ 14.85		$ 10.21
Vested in period (in shares)						1,043,800
Deferred compensation share-based arrangements, liability, current | $				$ 20.4		$ 20.4		$ 14.4
Share-based compensation liability related to PSUs | $				5.2		$ 5.2		$ 10.4
Performance Stock Units | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Relative total shareholder return, percentage						0
Performance Stock Units | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Relative total shareholder return, percentage						2.0
Performance Stock Units | Long Term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense | $				$ 12.8	$ 1.8	$ 21.7	$ 10.9
Performance-based restricted stock granted (in shares)			1,043,800
Weighted average fair value per share (in dollars per share) | $ / shares				$ 20.06		$ 20.06
Unrecognized compensation expense related to PSU awards | $				$ 17.7		$ 17.7
Remaining vesting period of unrecognized compensation expense (in years)						10 months 9 days
Performance Stock Units | Long Term Incentive Plan | Grant Date 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free interest rate						3.89%
Weighted average fair value per share (in dollars per share) | $ / shares				$ 17.84		$ 17.84
Expected volatility (as a percent)						77.00%
2023 ATSR PSUs | Long Term Incentive Plan | Grant Date 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based restricted stock granted (in shares)		301,175
2020 Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested in period (in shares)	1,043,800
Cash paid to settle awards | $	$ 14.5