PORTFOLIO INVESTMENTS AND FAIR VALUE - Aggregate Gross Unrealized Appreciation and Depreciation and Aggregate Cost and Fair Value of Portfolio Company Securities (Details)	12 Months Ended
Dec. 31, 2022 USD ($) item	Dec. 31, 2021 USD ($) item
Summary of Investment Holdings [Line Items]
Aggregate cost of portfolio company securities	$ 875,823,177	$ 785,005,957
Fair value of investments	$ 844,733,638	$ 772,873,326
Unfunded loan commitments
Summary of Investment Holdings [Line Items]
Number of investments \| item	52	32
Aggregate cost of portfolio company securities	$ 27,824,917	$ 30,982,734

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.

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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant