RELATED PARTY ARRANGEMENTS - Investment Income Incentive Fee (Details) - USD ($)	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
RELATED PARTY ARRANGEMENTS
Incentive fees	$ 10,189,888	$ 3,782,151	$ 3,043,470
Incentive fee payable current	$ 2,444,867	2,083,928
Related party \| Investment Advisory Agreement \| Stellus Capital
RELATED PARTY ARRANGEMENTS
Pre-Incentive fee net investment income, quarter hurdle rate	2.00%
Pre-Incentive fee net investment income, annual hurdle rate	8.00%
Incentive fee paid to investment advisor	$ 0
Cumulative pre-incentive fee net rate of return	20.00%
Incentive fees	$ 10,189,888	3,782,151	$ 3,043,470
Incentive fee payable	2,885,180	2,464,408
Incentive fee payable current	2,444,865	2,083,928
Income incentive fees written off	307,442
Related party \| Investment Advisory Agreement \| Stellus Capital \| Payment in Kind (PIK)
RELATED PARTY ARRANGEMENTS
Incentive fee payable	$ 440,313	$ 380,480
Related party \| Investment Advisory Agreement \| Stellus Capital \| Scenario, Hurdle Rate Less Than 2.5%
RELATED PARTY ARRANGEMENTS
Pre-Incentive fee net investment income, quarter hurdle rate	2.50%
Pre-Incentive fee net investment income, annual hurdle rate	10.00%
Cumulative pre-incentive fee net rate of return	100.00%
Related party \| Investment Advisory Agreement \| Stellus Capital \| Scenario, Hurdle Rate Greater Than Than 2.5%
RELATED PARTY ARRANGEMENTS
Pre-Incentive fee net investment income, quarter hurdle rate	2.50%
Pre-Incentive fee net investment income, annual hurdle rate	10.00%
Cumulative pre-incentive fee net rate of return	20.00%

Amount of incentive feed accrued but not paid written off.

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- Definition

Amount of incentive fee paid to investment advisor.

+ References

No definition available.

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Carrying amount of the unpaid portion of the investment income incentive fee payable classified as current.

+ References

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- Definition

Amount of investment income incentive fees incurred to be paid.

+ References

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- Definition

Threshold hurdle rate of pre-incentive fee net income to net assets on annual basis.

+ References

No definition available.

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Threshold hurdle rate of pre-incentive fee net income to net assets on quarterly basis.

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Percentage of cumulative pre-incentive fee rate of return.

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- Definition

Amount of expense for incentive fee based on performance under arrangement to manage operations, including, but not limited to, investment.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.6-07(2)(b))
-Publisher FASB
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-Name Accounting Standards Codification
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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 946
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
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-Subparagraph (SX 210.6-07(2)(c)(2)(i))
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-Topic 946
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-Name Accounting Standards Codification
-Section S99
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-URI https://asc.fasb.org//1943274/2147483575/946-220-S99-1

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