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INVESTMENTS - Investment Income, Payment-in-Kind Income and Segments (Details)	9 Months Ended
	Sep. 30, 2025 company segment	Dec. 31, 2024 company
Schedule of Investments [Line Items]
Number of portfolio companies	8	8
Number of portfolio companies, initiated by the company	6	5
Number of portfolio companies, that was on PIK non-accrual	1	1
Number of reportable segments | segment	1
Number of operating segments | segment	1
Sierra Merger
Schedule of Investments [Line Items]
Number of portfolio companies	2	2
MVC Acquisition
Schedule of Investments [Line Items]
Number of portfolio companies		1

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