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Transactions with Related Parties - Narrative (Details) $ in Thousands								3 Months Ended		9 Months Ended		12 Months Ended
	Aug. 05, 2025	Aug. 06, 2024	Dec. 31, 2021	Dec. 30, 2021	Oct. 05, 2021	Aug. 10, 2021	Jan. 01, 2019	Sep. 30, 2025 USD ($) component	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) component	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Related Party Transaction [Line Items]
Subordinated incentive fee on income								$ 8,181	$ 4,586	$ 15,854	$ 16,371	$ 20,334
Accrued subordinated incentive fee on income								8,181		8,181		3,964
Written notice to other party							60 days
Related party transaction, amount								$ 15,938	12,624	$ 39,208	40,452	52,438
Related Party
Related Party Transaction [Line Items]
Number of components | component								2		2
Accrued subordinated incentive fee on income								$ 8,181		$ 8,181		3,964
Investment Management Agreement
Related Party Transaction [Line Items]
Related party transaction, amount										16,251		12,731
Investment Management Agreement | Related Party
Related Party Transaction [Line Items]
Term of agreement	12 months	12 months
Investment Management Agreement, Annual Base Management Fee | Related Party
Related Party Transaction [Line Items]
Management and service fees, base rate (as a percent)	2.00%				1.50%
Investment Management Agreement, Asset Coverage Ratio | Related Party
Related Party Transaction [Line Items]
Management and service fees, base rate (as a percent)			150.00%	150.00%	200.00%
Investment Management Agreement, Annual Base Management Fee Step-Down | Related Party
Related Party Transaction [Line Items]
Management and service fees, base rate (as a percent)					1.00%
Investment Management Agreement, Hurdle Rate, Per Quarter
Related Party Transaction [Line Items]
Management and service fees, incentive rate (as a percent)						1.875%
Investment Management Agreement, Hurdle Rate, Per Year
Related Party Transaction [Line Items]
Management and service fees, incentive rate (as a percent)						7.50%
Investment Management Agreement, Pre-Incentive Fee Up to Threshold
Related Party Transaction [Line Items]
Management and service fees, incentive rate (as a percent)						100.00%
Investment Management Fee, Hurdle Rate, Threshold
Related Party Transaction [Line Items]
Management and service fees, incentive rate (as a percent)						9.375%
Investment Management Agreement, Pre-Incentive Fee, After Threshold
Related Party Transaction [Line Items]
Management and service fees, incentive rate (as a percent)						20.00%
Investment Management Agreement, Second Amendment, Hurdle Rate, Per Quarter
Related Party Transaction [Line Items]
Management and service fees, incentive rate (as a percent)						1.625%
Investment Management Agreement, Second Amendment, Hurdle Rate, Per Year
Related Party Transaction [Line Items]
Management and service fees, incentive rate (as a percent)						6.50%
Investment Management Agreement, Second Amendment, Pre-Incentive Fee, Up to Threshold
Related Party Transaction [Line Items]
Management and service fees, incentive rate (as a percent)						100.00%
Investment Management Fee, Second Amendment, Hurdle Rate, Threshold
Related Party Transaction [Line Items]
Management and service fees, incentive rate (as a percent)						7.879%
Investment Management Agreement, Second Amendment, Pre-Incentive Fee, After Threshold
Related Party Transaction [Line Items]
Management and service fees, incentive rate (as a percent)						17.50%
CIM, Incentive fee
Related Party Transaction [Line Items]
Related party transaction, amount								8,181	$ 4,586	$ 15,854	$ 16,371	$ 20,334
CIM, Incentive fee | Related Party
Related Party Transaction [Line Items]
Subordinated incentive fee on income								$ 8,181

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