Related Party Transactions - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Jun. 30, 2024	Feb. 29, 2024
GECC
Related Party Transaction [Line Items]
Percentage of ownership interest (as a percent)	12.50%		12.50%
Number of sharers held in subsidiary	1,438,079		1,438,079
GESP
Related Party Transaction [Line Items]
Investment amount in subsidiary						$ 6.0
Percentage of ownership interest (as a percent)						25.00%
Number of sharers held in subsidiary						1,850,424
PPH
Related Party Transaction [Line Items]
Investment amount in subsidiary					$ 3.0
Percentage of ownership interest (as a percent)					25.00%
Number of sharers held in subsidiary					997,506
SGP
Related Party Transaction [Line Items]
Investment amount in subsidiary	$ 3.3		$ 3.3
Percentage of ownership interest (as a percent)	25.00%		25.00%
Number of sharers held in subsidiary	1,094,527		1,094,527
Investment Management Expenses | Jason W. Reese | Shared Personnel and Reimbursement Agreement
Related Party Transaction [Line Items]
Costs incurred under agreement	$ 0.1	$ 0.1	$ 0.3	$ 0.3
Receivables from Managed Funds | Shared Services Agreements
Related Party Transaction [Line Items]
Costs incurred under agreement			$ 0.1		$ 0.1