Related Party Transactions - Schedule of Activity and Outstanding Balances Between Managed Investment Products and Company (Details) - Managed Investment Products - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Jun. 30, 2023
Related Party Transaction [Line Items]
Net realized and unrealized gain (loss) on investments	$ 1,227	$ (2,048)	$ 4,589	$ 8,845
Dividend income	995	$ 1,281	1,831	$ 2,661
Dividends receivable	452		452		$ 300
Receivable for reimbursable expenses paid	1,117		1,117		841
Related Party
Related Party Transaction [Line Items]
Investment management revenues receivable	1,923		1,923		2,167
Receivables from managed funds	$ 3,492		$ 3,492		$ 3,308

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