EARNINGS PER SHARE - Earnings per Share (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 3,343,852	$ 2,954,799	$ 1,680,242	$ 2,808,643	$ 6,298,651	$ 4,488,885
Less dividends:
Common stock	3,133,869	3,133,509	2,245,309	2,244,904	6,267,378	4,490,214
Preferred stock	1,185,042	$ 1,184,958	725,667	$ 3,708	2,370,000	729,375
Dividends declared but not paid at end of period	4,318,911		2,970,976		8,637,378	5,219,589
Undistributed earnings (deficit)	$ (975,059)		$ (1,290,734)		$ (2,338,727)	$ (730,704)
Basic income per share (in dollars per share)	$ 0.04		$ 0.04		$ 0.09	$ 0.15
Common Stock
Less dividends:
Distributed earnings (in dollars per share)	0.06		0.09		0.14	0.18
Undistributed earnings (deficit) (in dollars per share)	(0.02)		(0.05)		(0.05)	(0.03)
Basic income per share (in dollars per share)	0.04		0.04		0.09	0.15
Unvested Share-Based Payment Awards
Less dividends:
Distributed earnings (in dollars per share)	0.06		0.09		0.14	0.18
Undistributed earnings (deficit) (in dollars per share)	0		0		0	0
Basic income per share (in dollars per share)	$ 0.06		$ 0.09		$ 0.14	$ 0.18