PORTFOLIO INVESTMENTS AND FAIR VALUE - Total Fair Value and Cost of Investments (Details)	3 Months Ended	12 Months Ended
Mar. 31, 2023 USD ($) company	Dec. 31, 2022 USD ($) company
Summary of Investment Holdings [Line Items]
Investments, amortized cost	$ 912,581,782	$ 875,823,177
Fair value of investments	$ 877,493,781	$ 844,733,638
Investments in number of portfolio companies \| company	88	85
% of Total Investments at fair value	100.00%	100.00%
Senior SecuredLoans-First Lien
Summary of Investment Holdings [Line Items]
Investments, amortized cost	$ 784,755,679	$ 750,527,999
Fair value of investments	$ 767,818,131	$ 735,555,508
% of Total Investments at fair value	6.20%	3.10%
Senior Secured Loans-Second Lien
Summary of Investment Holdings [Line Items]
Investments, amortized cost	$ 70,026,436	$ 69,989,477
Fair value of investments	43,780,075	45,304,300
Unsecured Debt
Summary of Investment Holdings [Line Items]
Investments, amortized cost	5,833,306	5,657,964
Fair value of investments	5,428,810	4,823,898
Equity Securities
Summary of Investment Holdings [Line Items]
Investments, amortized cost	51,966,361	49,647,737
Fair value of investments	$ 60,466,765	$ 59,049,932

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Cost of the investment.

+ References

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Value of the investment at close of period. For schedules of investments that are categorized, the value would be aggregated by category. For investment in and advances to affiliates, if operations of any controlled companies are different in character from those of the company, group such affiliates within divisions and by type of activities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 5D
-Subparagraph (SX 210.12-13D(Column C))
-URI https://asc.fasb.org/extlink&oid=122147990&loc=SL120429264-123010

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column C))
-URI https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010

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Percent of net assets at close of period. For schedules of investments that are categorized, each category has a percent of net assets for the aggregated value of the Investments in the category.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-12B(Column D))
-URI https://asc.fasb.org/extlink&oid=122147990&loc=d3e611197-123010

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 946
-SubTopic 210
-Section 50
-Paragraph 6
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-URI https://asc.fasb.org/extlink&oid=99383244&loc=d3e12121-115841

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