Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Millions, $ in Millions	Total	Nonrelated Party	Accumulated other comprehensive income (loss)	Consolidated Entity Excluding Consolidated Funds Total stockholders’ equity (deficit)	Consolidated Entity Excluding Consolidated Funds Total stockholders’ equity (deficit) Nonrelated Party	Consolidated Entity Excluding Consolidated Funds Common Stock	Consolidated Entity Excluding Consolidated Funds Additional paid-in capital	Consolidated Entity Excluding Consolidated Funds Retained earnings (deficit)	Consolidated Entity Excluding Consolidated Funds Retained earnings (deficit) Nonrelated Party	Consolidated Entity Excluding Consolidated Funds Accumulated other comprehensive income (loss)	Consolidated Funds
Beginning balance (in shares) at Dec. 31, 2024						37.5
Beginning balance at Dec. 31, 2024			$ (4.4)	$ 20.0		$ 0.0	$ 0.0	$ 24.4		$ (4.4)
Increase (Decrease) in Stockholders' Equity
Repurchase of common stock including excise taxes (in shares)						(0.8)
Repurchase of common stock including excise taxes				(19.6)			(0.4)	(19.2)
Equity-based compensation				0.6			0.6
Foreign currency translation adjustment, net of tax	$ 0.5			0.5						0.5
Amortization related to derivative securities, net of tax				0.7						0.7
Withholding tax related to restricted stock vesting	(0.2)			(0.2)			(0.2)
Dividends				(0.4)				(0.4)
Net income (loss)	20.1			20.1				20.1
Ending balance (in shares) at Mar. 31, 2025						36.7
Ending balance at Mar. 31, 2025			$ (3.2)	21.7		$ 0.0	0.0	24.9		(3.2)
Beginning balance at Dec. 31, 2024											$ 67.1
Increase (Decrease) in redeemable non-controlling interest in consolidated Funds
Net income attributable to redeemable non-controlling interests in consolidated Funds	3.7										3.7
Ending balance at Mar. 31, 2025											70.8
Beginning balance at Dec. 31, 2024	87.1
Increase (Decrease) in total equity and redeemable non-controlling interest in consolidated Funds
Repurchase of common stock including excise taxes	(19.6)
Equity-based compensation	0.6
Foreign currency translation adjustment, net of tax	0.5
Amortization related to derivative securities, net of tax	0.7
Withholding tax related to restricted stock vesting	(0.2)			(0.2)			(0.2)
Dividends	(0.4)
Net income (loss)	23.8
Ending balance at Mar. 31, 2025	92.5
Beginning balance (in shares) at Dec. 31, 2025						35.7
Beginning balance at Dec. 31, 2025				60.6		$ 0.0	1.0	56.2		3.4
Increase (Decrease) in Stockholders' Equity
Repurchase of common stock including excise taxes (in shares)						(0.1)
Repurchase of common stock including excise taxes				(4.7)			(2.0)	(2.7)
Equity-based compensation				1.5			1.5
Foreign currency translation adjustment, net of tax	(0.1)			(0.1)						(0.1)
Withholding tax related to restricted stock vesting	(0.5)			(0.5)			(0.5)
Dividends					$ (3.6)				$ (3.6)
Net income (loss)	24.3			24.3				24.3
Ending balance (in shares) at Mar. 31, 2026						35.6
Ending balance at Mar. 31, 2026				77.5		$ 0.0	0.0	$ 74.2		$ 3.3
Beginning balance at Dec. 31, 2025											23.4
Increase (Decrease) in redeemable non-controlling interest in consolidated Funds
Capital contributions (distributions)	(1.6)										(1.6)
Net income attributable to redeemable non-controlling interests in consolidated Funds	0.1										0.1
Ending balance at Mar. 31, 2026											21.9
Beginning balance at Dec. 31, 2025	84.0
Increase (Decrease) in total equity and redeemable non-controlling interest in consolidated Funds
Repurchase of common stock including excise taxes	(4.7)
Capital contributions (distributions)	(1.6)										$ (1.6)
Equity-based compensation	1.5
Foreign currency translation adjustment, net of tax	(0.1)
Amortization related to derivative securities, net of tax	0.0
Withholding tax related to restricted stock vesting	(0.5)			$ (0.5)			$ (0.5)
Dividends		$ (3.6)
Net income (loss)	24.4
Ending balance at Mar. 31, 2026	$ 99.4