PORTFOLIO INVESTMENTS AND FAIR VALUE - Total Fair Value and Cost of Investments (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2023 USD ($) company	Dec. 31, 2022 USD ($) company
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 941,679,195	$ 875,823,177
Fair value of investments	$ 886,338,148	$ 844,733,638
Investments In Number Of Portfolio Companies | company	96	85
% of Total Investments at fair value	100.00%	100.00%
Senior SecuredLoans-First Lien
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 818,753,394	$ 750,527,999
Fair value of investments	$ 793,131,815	$ 735,555,508
% of Total Investments at fair value	5.80%	3.10%
Senior Secured Loans-Second Lien
Investment Holdings 1 [Line Items]
Investments, amortized cost	$ 60,218,330	$ 69,989,477
Fair value of investments	21,935,000	45,304,300
Unsecured Debt
Investment Holdings 1 [Line Items]
Investments, amortized cost	5,922,437	5,657,964
Fair value of investments	5,675,605	4,823,898
Equity Securities
Investment Holdings 1 [Line Items]
Investments, amortized cost	56,785,034	49,647,737
Fair value of investments	$ 65,595,728	$ 59,049,932