SECURED BORROWINGS - Schedule of Debt Obligations (Details) - USD ($)	Jun. 30, 2024	Apr. 09, 2024	Apr. 08, 2024	Mar. 14, 2024	Dec. 31, 2023	Dec. 07, 2023	Dec. 06, 2023	Nov. 21, 2023	Nov. 20, 2023	Dec. 30, 2019
Debt Instrument [Line Items]
Total Commitment	$ 1,322,000,000				$ 1,167,000,000
Amount outstanding	1,028,750,000				951,877,000
Unused portion	293,250,000				215,123,000
Amount available	289,990,000				214,960,000
CLO-I | Secured Debt
Debt Instrument [Line Items]
Total Commitment	342,000,000				342,000,000
Amount outstanding	342,000,000				342,000,000
Unused portion	0				0
Amount available	0				0
CLO-II | Secured Debt
Debt Instrument [Line Items]
Total Commitment	215,000,000				215,000,000
Amount outstanding	215,000,000				215,000,000
Unused portion	0				0
Amount available	0				0
CLO-III | Secured Debt
Debt Instrument [Line Items]
Total Commitment	215,000,000
Amount outstanding	215,000,000
Unused portion	0
Amount available	0
Secured Debt | Credit Facility
Debt Instrument [Line Items]
Total Commitment		$ 250,000,000	$ 185,000,000
Secured Debt | Wells Fargo Financing Facility | Credit Facility
Debt Instrument [Line Items]
Total Commitment	150,000,000			$ 250,000,000	275,000,000					$ 275,000,000
Amount outstanding	69,000,000				231,000,000
Unused portion	81,000,000				44,000,000
Amount available	81,000,000			$ 150,000,000	43,837,000
Secured Debt | SMBC Financing Facility | Credit Facility
Debt Instrument [Line Items]
Total Commitment	150,000,000				150,000,000	$ 150,000,000	$ 300,000,000	$ 150,000,000	$ 300,000,000
Amount outstanding	110,500,000				37,377,000
Unused portion	39,500,000				112,623,000
Amount available	36,240,000				112,623,000
Secured Debt | Revolving Credit Facility | Credit Facility
Debt Instrument [Line Items]
Total Commitment	250,000,000				185,000,000
Amount outstanding	77,250,000				126,500,000
Unused portion	172,750,000				58,500,000
Amount available	$ 172,750,000				$ 58,500,000