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EXTERNAL INVESTMENT MANAGER - Narrative (Details) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 29, 2025	Oct. 31, 2020	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Related Party Transaction [Line Items]
Net investment income			$ 85,560,000	$ 89,515,000	$ 267,200,000	$ 272,659,000
Incentive fee payable, capital-gain-based			0		0
External Investment Manager
Related Party Transaction [Line Items]
Net investment income			$ 8,400,000	$ 8,800,000	$ 25,400,000	$ 25,400,000
External Investment Manager \| Advisory Agreement, Previous \| Affiliated Entity
Related Party Transaction [Line Items]
Management and service fees (as a percent)		1.75%
Management and service fees, incentive rate (as a percent)		20.00%
External Investment Manager \| Advisory Agreement, Active \| Affiliated Entity
Related Party Transaction [Line Items]
Management and service fees (as a percent)	1.50%
Management and service fees, incentive rate (as a percent)	17.50%
Management and service fees, catch up feature rate (as a percent)	50.00%