PORTFOLIO INVESTMENTS AND FAIR VALUE - Quantitative Information About Level 3 Fair Value Measurements (Details)	Sep. 30, 2023 USD ($)	Dec. 31, 2022 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	$ 886,338,148	$ 844,733,638
Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	886,338,148	844,733,638
Senior SecuredLoans-First Lien
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	793,131,815	735,555,508
Senior SecuredLoans-First Lien | Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	793,131,815	735,555,508
Senior SecuredLoans-First Lien | Income/Market approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	$ 793,131,815	$ 735,555,508
Senior SecuredLoans-First Lien | Minimum | Income/Market approach | Significant Unobservable Inputs (Level 3) | HY credit spreads
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	(0.0340)	(0.0229)
Senior SecuredLoans-First Lien | Minimum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Risk free rates
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.0000	(0.0143)
Senior SecuredLoans-First Lien | Minimum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Market multiples
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.050	0.045
Senior SecuredLoans-First Lien | Maximum | Income/Market approach | Significant Unobservable Inputs (Level 3) | HY credit spreads
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.0720	0.0653
Senior SecuredLoans-First Lien | Maximum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Risk free rates
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.0397	0.0431
Senior SecuredLoans-First Lien | Maximum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Market multiples
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.170	0.193
Senior SecuredLoans-First Lien | Weighted average | Significant Unobservable Inputs (Level 3) | HY credit spreads
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	(0.0043)	0.0152
Senior SecuredLoans-First Lien | Weighted average | Income/Market approach | Significant Unobservable Inputs (Level 3) | HY credit spreads
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	(0.0043)	(0.0152)
Senior SecuredLoans-First Lien | Weighted average | Income/Market approach | Significant Unobservable Inputs (Level 3) | Risk free rates
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	(0.0098)	(0.0231)
Senior SecuredLoans-First Lien | Weighted average | Income/Market approach | Significant Unobservable Inputs (Level 3) | Market multiples
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.105	0.101
Senior Secured Loans-Second Lien
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	$ 21,935,000	$ 45,304,300
Senior Secured Loans-Second Lien | Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	21,935,000	45,304,300
Senior Secured Loans-Second Lien | Income/Market approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	$ 21,935,000	$ 45,304,300
Senior Secured Loans-Second Lien | Minimum | Income/Market approach | Significant Unobservable Inputs (Level 3) | HY credit spreads
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	(0.0074)	(0.0017)
Senior Secured Loans-Second Lien | Minimum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Risk free rates
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.0027	(0.0002)
Senior Secured Loans-Second Lien | Minimum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Market multiples
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.057	0.056
Senior Secured Loans-Second Lien | Maximum | Income/Market approach | Significant Unobservable Inputs (Level 3) | HY credit spreads
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.0797	0.0518
Senior Secured Loans-Second Lien | Maximum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Risk free rates
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.0113	0.0391
Senior Secured Loans-Second Lien | Maximum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Market multiples
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.108	0.151
Senior Secured Loans-Second Lien | Weighted average | Income/Market approach | Significant Unobservable Inputs (Level 3) | HY credit spreads
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	(0.0156)	(0.0239)
Senior Secured Loans-Second Lien | Weighted average | Income/Market approach | Significant Unobservable Inputs (Level 3) | Risk free rates
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	(0.0057)	(0.0194)
Senior Secured Loans-Second Lien | Weighted average | Income/Market approach | Significant Unobservable Inputs (Level 3) | Market multiples
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.078	0.114
Unsecured Debt
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	$ 5,675,605	$ 4,823,898
Unsecured Debt | Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	5,675,605	4,823,898
Unsecured Debt | Income/Market approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	$ 5,675,605	$ 4,823,898
Unsecured Debt | Minimum | Income/Market approach | Significant Unobservable Inputs (Level 3) | HY credit spreads
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.0457	0.0797
Unsecured Debt | Minimum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Risk free rates
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.0439	0.0363
Unsecured Debt | Minimum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Market multiples
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.093	0.091
Unsecured Debt | Maximum | Income/Market approach | Significant Unobservable Inputs (Level 3) | HY credit spreads
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.0457	0.0797
Unsecured Debt | Maximum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Risk free rates
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.0439	0.0363
Unsecured Debt | Maximum | Income/Market approach | Significant Unobservable Inputs (Level 3) | Market multiples
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.093	0.091
Unsecured Debt | Weighted average | Income/Market approach | Significant Unobservable Inputs (Level 3) | HY credit spreads
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	(0.0457)	0.0797
Unsecured Debt | Weighted average | Income/Market approach | Significant Unobservable Inputs (Level 3) | Risk free rates
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	(0.0439)	(0.0363)
Unsecured Debt | Weighted average | Income/Market approach | Significant Unobservable Inputs (Level 3) | Market multiples
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt	0.093	0.091
Equity Securities
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	$ 65,595,728	$ 59,049,932
Equity Securities | Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	65,595,728	59,049,932
Equity Securities | Market approach | Significant Unobservable Inputs (Level 3)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair value of investments	$ 65,595,728	$ 59,049,932
Equity Securities | Minimum | Market approach | Significant Unobservable Inputs (Level 3) | Underwriting EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments	0.014	0.013
Equity Securities | Maximum | Market approach | Significant Unobservable Inputs (Level 3) | Underwriting EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments	0.244	0.248
Equity Securities | Weighted average | Market approach | Significant Unobservable Inputs (Level 3) | Underwriting EBITDA Multiple
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Equity investments	0.125	0.117