EQUITY OFFERINGS AND RELATED EXPENSES - Stock Issued (Details) - USD ($)	3 Months Ended			9 Months Ended		12 Months Ended											141 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2023
EQUITY OFFERINGS AND RELATED EXPENSES
Issuance of common stock, net of offering costs (shares)		581,614				149,174	31,592	354,257	3,177,936	7,931	3,465,922			380,936	63,998	12,035,023	24,125,642
Gross Proceeds		$ 8,418,160				$ 2,070,935	$ 449,515	$ 5,023,843	$ 45,862,995	$ 93,737	$ 48,741,406			$ 5,485,780	$ 899,964	$ 180,522,093	$ 352,021,616
Underwriting fees		126,303				31,066	6,744	5,680	1,015,127		1,358,880			75,510		4,959,720	8,395,975
Offering Expenses		70,255				530,842	53,327	84,592	559,261		307,021			29,904		835,500	2,626,632
Fees covered by Advisor		68,967				87,605	4,255	66,423	37,546								672,917
Net Proceeds		$ 8,290,569				$ 1,596,632	$ 393,699	$ 4,999,994	$ 44,326,153	$ 93,737	$ 47,075,505			$ 5,380,366	$ 899,964	$ 174,726,873	$ 341,671,926
Average Offering Price	$ 13.97	$ 14.47		$ 13.97		$ 13.88	$ 14.23	$ 14.40	$ 14.43	$ 11.85	$ 14.06			$ 14.47	$ 14.06	$ 14.90	$ 13.97
Increase (decrease) in gross proceeds from issuance of common stock due to share redemptions								$ (94)	$ 757	$ (1,051)	$ (142)	$ (31)	$ (29)
Common shares issued under the DRIP	$ 0		$ 0	$ 0	$ 0	$ 0	$ 0	$ 228,943	$ 0	$ 94,788	$ 0	$ 0	$ 0	$ 390,505	$ 938,385	$ 113,000
Reclassification adjustment to additional paid in capital				$ 4,358,535		$ 4,358,535