Fair Value - Level III Rollforward (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Total
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 607,133	$ 161,756	$ 475,705	$ 104,427
Net realized/unrealized gains (losses) on investments		1,491		2,899
Purchases, including capitalized PIK and revolver fundings	349,727	26,661	458,698	85,872
Proceeds from sales and paydowns of investments	(69,482)	(706)	(80,361)	(1,578)
Transfers into Level III	5,255	7,031	18,729	4,613
Transfers out of Level III	(34,369)		(17,177)
Ending balance	858,720	196,233	858,720	196,233
Net change in unrealized appreciation (depreciation) for the period relating to those Level III assets that were still held by the Company at the end of the period	348	1,491	3,125	2,899
Total | Net realized (losses) gains on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized/unrealized gains (losses) on investments	14		14
Total | Net change in unrealized appreciation (depreciation) of investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized/unrealized gains (losses) on investments	442		3,112
First lien
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	579,029	149,621	459,051	93,348
Net realized/unrealized gains (losses) on investments		1,372		2,176
Purchases, including capitalized PIK and revolver fundings	334,730	23,328	443,514	79,669
Proceeds from sales and paydowns of investments	(69,482)	(706)	(80,361)	(1,578)
Transfers into Level III	5,255	0	18,729	0
Transfers out of Level III	(23,250)		(17,177)
Ending balance	826,750	173,615	826,750	173,615
Net change in unrealized appreciation (depreciation) for the period relating to those Level III assets that were still held by the Company at the end of the period	360	1,372	2,993	2,176
First lien | Net realized (losses) gains on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized/unrealized gains (losses) on investments	14		14
First lien | Net change in unrealized appreciation (depreciation) of investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized/unrealized gains (losses) on investments	454		2,980
Second lien
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	19,928	8,268	8,678	7,239
Net realized/unrealized gains (losses) on investments		51		676
Purchases, including capitalized PIK and revolver fundings	9,207	0	9,207	2,822
Proceeds from sales and paydowns of investments	0	0	0	0
Transfers into Level III	0	7,031	0	4,613
Transfers out of Level III	(11,119)		0
Ending balance	18,016	15,350	18,016	15,350
Net change in unrealized appreciation (depreciation) for the period relating to those Level III assets that were still held by the Company at the end of the period	0	51	131	676
Second lien | Net realized (losses) gains on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized/unrealized gains (losses) on investments	0		0
Second lien | Net change in unrealized appreciation (depreciation) of investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized/unrealized gains (losses) on investments	0		131
Subordinated
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	6,797	3,040	6,610	3,077
Net realized/unrealized gains (losses) on investments		58		21
Purchases, including capitalized PIK and revolver fundings	5,790	3,284	5,925	3,284
Proceeds from sales and paydowns of investments	0	0	0	0
Transfers into Level III	0	0	0	0
Transfers out of Level III	0		0
Ending balance	12,587	6,382	12,587	6,382
Net change in unrealized appreciation (depreciation) for the period relating to those Level III assets that were still held by the Company at the end of the period	0	58	52	21
Subordinated | Net realized (losses) gains on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized/unrealized gains (losses) on investments	0		0
Subordinated | Net change in unrealized appreciation (depreciation) of investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized/unrealized gains (losses) on investments	0		52
Equity and other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	1,379	827	1,366	763
Net realized/unrealized gains (losses) on investments		10		26
Purchases, including capitalized PIK and revolver fundings	0	49	52	97
Proceeds from sales and paydowns of investments	0	0	0	0
Transfers into Level III	0	0	0	0
Transfers out of Level III	0		0
Ending balance	1,367	886	1,367	886
Net change in unrealized appreciation (depreciation) for the period relating to those Level III assets that were still held by the Company at the end of the period	(12)	$ 10	(51)	$ 26
Equity and other | Net realized (losses) gains on investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized/unrealized gains (losses) on investments	0		0
Equity and other | Net change in unrealized appreciation (depreciation) of investments
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net realized/unrealized gains (losses) on investments	$ (12)		$ (51)