PORTFOLIO INVESTMENTS AND FAIR VALUE - Aggregate gross unrealized appreciation and depreciation and aggregate cost and fair value of portfolio company securities (Details)	9 Months Ended	12 Months Ended
Sep. 30, 2022 USD ($) item	Dec. 31, 2021 USD ($) item
Summary of Investment Holdings [Line Items]
Aggregate cost of portfolio company securities	$ 899,059,872	$ 785,005,957
Gross unrealized appreciation of portfolio company securities	30,662,296	27,283,421
Net unrealized depreciation on non-controlled non-affiliated investments and cash equivalents, net	(57,988,888)	(39,416,052)
Fair value of investments	$ 871,733,280	$ 772,873,326
Unfunded loan commitments
Summary of Investment Holdings [Line Items]
Number of investments \| item	49	32
Aggregate cost of portfolio company securities	$ 30,269,900	$ 30,982,734

Represents the number of investments for the entity.

No definition available.

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Period Type:	duration

- Definition

Cost of the investment.

+ References

+ Details

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- Definition

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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- Definition

This element represents the excess of the cost (face amount, notional amount) of an investment (security, contract) over its fair value which deficiency has not been recognized in earnings of the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 946
-SubTopic 320
-Section S99
-Paragraph 22
-URI https://asc.fasb.org/extlink&oid=122147990&loc=SL6090603-123010

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- Definition

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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