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Related Party Transactions - Additional Information (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2025	Sep. 30, 2026	Sep. 30, 2025	Jun. 30, 2026	Jun. 30, 2025	Dec. 31, 2024	Jun. 30, 2024	Feb. 29, 2024
Related Party Transaction [Line Items]
Sales of investments		$ 1,430	$ 2,384
Promissory note, issued		36,838		$ 36,838
Purchases from related party		$ 300	700
GECC
Related Party Transaction [Line Items]
Percentage of ownership interest (as a percent)		9.00%
Number of shares held in subsidiary		1,245,532
GESP
Related Party Transaction [Line Items]
Investment amount in subsidiary								$ 6,000
Percentage of ownership interest (as a percent)								25.00%
Number of shares held in subsidiary		1,378,260
PPH
Related Party Transaction [Line Items]
Investment amount in subsidiary							$ 3,000
Percentage of ownership interest (as a percent)							25.00%
Number of shares held in subsidiary		972,506
SGP
Related Party Transaction [Line Items]
Investment amount in subsidiary						$ 3,300
Percentage of ownership interest (as a percent)						25.00%
Number of shares held in subsidiary		1,049,527
Monomoy REIT \| Promissory Note
Related Party Transaction [Line Items]
Amount drawn upon issuance of promissory note					$ 8,000
Interest rate	8.00%
Promissory note, frequency of periodic payment	payable semi-annually in arrears
Related Interest Income			100
Monomoy REIT \| Promissory Note \| Maximum
Related Party Transaction [Line Items]
Promissory note, issued	$ 10,000
Investment Management Expenses \| Jason W. Reese \| Shared Personnel and Reimbursement Agreement
Related Party Transaction [Line Items]
Costs incurred under agreement		$ 100	200
Receivables from Managed Funds \| Shared Services Agreements
Related Party Transaction [Line Items]
Costs incurred under agreement		4		11
GECM
Related Party Transaction [Line Items]
Sales of investments		0	$ 100
Related Party Payable \| Shared Services Agreements
Related Party Transaction [Line Items]
Costs incurred under agreement		$ 100		$ 200