RELATED PARTY ARRANGEMENTS - Investment Income Incentive Fee (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
RELATED PARTY ARRANGEMENTS
Incentive fees	$ 2,705,200	$ 1,635,641	$ 7,433,039	$ 1,635,641
Incentive fee payable current	2,622,778		$ 2,622,778		$ 2,083,928
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	2,705,200	$ 1,635,641	$ 7,433,039	$ 1,635,641
Incentive fee payable	3,058,550		3,058,550		2,464,408
Incentive fee payable current	2,622,778		2,622,778		2,083,928
Stellus Capital | Payment in Kind (PIK)
RELATED PARTY ARRANGEMENTS
Incentive fee payable	$ 435,772		$ 435,772		$ 380,480
Stellus Capital | Scenario, Hurdle Rate Less Than 2.5%
RELATED PARTY ARRANGEMENTS
Pre-Incentive fee net investment income, quarter hurdle rate			2.50%
Cumulative pre-incentive fee net rate of return			100.00%
Stellus Capital | Scenario, Hurdle Rate Greater Than Than 2.5%
RELATED PARTY ARRANGEMENTS
Pre-Incentive fee net investment income, annual hurdle rate			10.00%