INVESTMENTS - Schedule of Composition of the Fund’s Investment Portfolio at Cost and Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Schedule of Investments [Line Items]
Amortized Cost	$ 633,269	$ 516,168
Fair Value	626,799	512,036
Investment owned, fair value	633,650	519,626
Cost	$ 640,120	$ 523,758
Investments at Fair Value | Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Fair Value	100.00%	100.00%
Second Lien Term Loans
Schedule of Investments [Line Items]
Investment owned, fair value	$ 49,835	$ 52,170
Cost	51,136	53,365
Mezzanine Debt
Schedule of Investments [Line Items]
Investment owned, fair value	50,354	49,760
Cost	51,257	50,523
First Lien Term Loans
Schedule of Investments [Line Items]
Amortized Cost	518,713	402,858
Fair Value	$ 513,737	$ 399,882
First Lien Term Loans | Investments at Fair Value | Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Fair Value	81.96%	78.10%
Subordinated Debt
Schedule of Investments [Line Items]
Amortized Cost	$ 102,393	$ 103,888
Fair Value	$ 100,189	$ 101,930
Subordinated Debt | Investments at Fair Value | Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Fair Value	15.99%	19.90%
Equity Investments
Schedule of Investments [Line Items]
Amortized Cost	$ 12,163	$ 9,422
Fair Value	12,873	10,224
Investment owned, fair value	12,873	10,224
Cost	$ 12,163	$ 9,422
Equity Investments | Investments at Fair Value | Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Fair Value	2.05%	2.00%
Largest portfolio company investment
Schedule of Investments [Line Items]
Amortized Cost	$ 10,411	$ 10,731
Fair Value	$ 10,411	$ 10,986
Largest portfolio company investment | Investments at Fair Value | Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Fair Value	1.66%	2.15%
Average portfolio company investment
Schedule of Investments [Line Items]
Amortized Cost	$ 3,298	$ 3,246
Fair Value	$ 3,265	$ 3,220
Average portfolio company investment | Investments at Fair Value | Investment Type Concentration Risk
Schedule of Investments [Line Items]
% of Fair Value	0.52%	0.63%