EQUITY OFFERINGS AND RELATED EXPENSES (Details) - USD ($)		3 Months Ended		12 Months Ended											135 Months Ended
	Aug. 29, 2022	Mar. 31, 2023	Mar. 31, 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	Mar. 31, 2023
Subsidiary, Sale of Stock [Line Items]
Aggregate offering price		$ 8,290,569	$ 167,670
Common stock, par value		$ 0.001		$ 0.001											$ 0.001
Shares issued		581,614		149,174	31,592	354,257	3,177,936	7,931	3,465,922			380,936	63,998	12,035,023	20,248,383
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	$ 297,568,428
Underwriting and other expenses		$ 72,955	50,369
Average Offering Price		$ 14.47		$ 13.88	$ 14.23	$ 14.40	$ 14.43	$ 11.85	$ 14.06			$ 14.47	$ 14.06	$ 14.90	$ 14.47
Proceeds from the issuance of common stock		$ 8,487,127	221,176												$ 287,783,492
Common shares issued under the DRIP		$ 0	0	$ 0	$ 0	$ 228,943	$ 0	$ 94,788	$ 0	$ 0	$ 0	$ 390,505	$ 938,385	$ 113,000
At-the-Market Offering
Subsidiary, Sale of Stock [Line Items]
Shares issued		581,614
Gross Proceeds		$ 8,418,160
Underwriting and other expenses		$ 196,558
Average Offering Price		$ 14.47													$ 14.47
Advisor reimbursement			68,967
Proceeds from the issuance of common stock			$ 8,290,569
Net proceeds per share			$ 14.38
Equity Distribution Agreement
Subsidiary, Sale of Stock [Line Items]
Aggregate offering price	$ 50,000,000
Common stock, par value	$ 0.001