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Related Party Agreements and Transactions (Details)	1 Months Ended	12 Months Ended
Related Party Agreements and Transactions (Details)	Dec. 31, 2025 USD ($)	Jun. 30, 2026 USD ($) component	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)
Related Party Transaction [Line Items]
Base management fee		$ 130,934,000	$ 145,756,000	$ 157,001,000
Income incentive fee		26,508,000	40,772,000	80,548,000
Incentive fee expense, capital-gain-based		0	0	0
Litigation settlement	$ 20,500,000
Allocation of overhead		22,095,000	22,257,000	25,781,000
Software fees incurred		203,000	51,000	177,000
Sent to Portfolio Company Involved in Litigation Settlement
Related Party Transaction [Line Items]
Proceeds from legal settlements		3,375,000
To Offset Current Period Allocations of Overhead Expense Prospect Administration
Related Party Transaction [Line Items]
Proceeds from legal settlements		14,756,000
To Offset Current Period Allocations of Overhead Expense, Reimbursement Of Administration Expense
Related Party Transaction [Line Items]
Proceeds from legal settlements		17,125,000
Affiliated Entity
Related Party Transaction [Line Items]
Incentive fee		0
Other		61,000	125,000
Allocation of overhead		22,095,000	22,257,000	25,781,000
Managerial assistance		11,021,000	9,286,000	10,459,000
Related Party
Related Party Transaction [Line Items]
Other		$ 2,369,000
Investment Advisory Agreement \| Affiliated Entity
Related Party Transaction [Line Items]
Base management fee rate		2.00%
Number of parts to incentive fee \| component		2
Investment Advisory Agreement \| Related Party
Related Party Transaction [Line Items]
Base management fee		$ 130,934,000	145,756,000	157,001,000
Investment Advisory And Management Agreement Incentive Rate Quarterly Hurdle Rate \| Affiliated Entity
Related Party Transaction [Line Items]
Incentive rate		1.75%
Investment Advisory And Management Agreement Incentive Rate Annual Hurdle Rate \| Affiliated Entity
Related Party Transaction [Line Items]
Incentive rate		7.00%
Investment Advisory And Management Agreement Incentive Rate Pre Incentive Fee Net Investment Income Below Catch Up Threshold \| Affiliated Entity
Related Party Transaction [Line Items]
Incentive rate		100.00%
Investment Advisory And Management Agreement Incentive Rate Pre Incentive Fee Net Investment Income Below Catch Up Threshold \| Affiliated Entity \| Maximum
Related Party Transaction [Line Items]
Incentive rate		125.00%
Investment Advisory And Management Agreement Incentive Rate Annual Catch Up Threshold Member \| Affiliated Entity
Related Party Transaction [Line Items]
Incentive rate		8.75%
Investment Advisory And Management Agreement Incentive Rate Pre Incentive Fee Net Investment Income Exceeds Catch Up Threshold Member \| Affiliated Entity
Related Party Transaction [Line Items]
Incentive rate		20.00%
Investment Advisory And Management Agreement Incentive Rate Pre Incentive Fee Net Investment Income Exceeds Catch Up Threshold Member \| Affiliated Entity \| Minimum
Related Party Transaction [Line Items]
Incentive rate		125.00%
Investment Management Agreement - Incentive Rate, Realized Capital Gains \| Affiliated Entity
Related Party Transaction [Line Items]
Incentive rate		20.00%
Administration Agreement \| Affiliated Entity
Related Party Transaction [Line Items]
Administration agreement, termination period without penalties		60 days
Related party transaction, amounts of transaction		$ 1,534,000	2,615,000	4,435,000
Reimbursements \| Affiliated Entity
Related Party Transaction [Line Items]
Related party transaction, amounts of transaction		$ 32,000	$ 89,000	$ 80,000