RELATED PARTY ARRANGEMENTS - Investment Advisory Agreement (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
RELATED PARTY ARRANGEMENTS
Other liabilities	$ 278,345
Related party
RELATED PARTY ARRANGEMENTS
Other liabilities		$ 1,060,321
Related party | Investment Advisory Agreement | Stellus Capital
RELATED PARTY ARRANGEMENTS
Annual base management fee percentage	1.75%
Base management fee	$ 15,452,347	14,848,174	$ 13,169,606
Other liabilities	$ 2,918,536	$ 7,150,407