EARNINGS PER SHARE - Earnings per Share (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Sep. 30, 2022	Sep. 30, 2021
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income	$ 1,500,275	$ 3,343,852	$ 2,954,799	$ 2,374,468	$ 1,680,242	$ 2,808,643	$ 7,798,926	$ 6,863,353
Less dividends:
Common stock	3,133,869	3,133,869	3,133,509	2,245,310	2,245,309	2,244,904	9,401,247	6,735,523
Preferred stock	1,185,042	$ 1,185,042	$ 1,184,958	1,198,166	$ 725,667	$ 3,708	3,555,042	1,927,542
Dividends declared but not paid at end of period	4,318,911			3,443,476			12,956,289	8,663,065
Undistributed earnings (deficit)	$ (2,818,636)			$ (1,069,008)			$ (5,157,363)	$ (1,799,712)
Basic income per share (in dollars per share)	$ 0.01			$ 0.05			$ 0.09	$ 0.20
Common Stock
Less dividends:
Distributed earnings (in dollars per share)	0.06			0.09			0.20	0.27
Undistributed earnings (deficit) (in dollars per share)	(0.05)			(0.04)			(0.11)	(0.07)
Basic income per share (in dollars per share)	0.01			0.05			0.09	0.20
Unvested Share-Based Payment Awards
Less dividends:
Distributed earnings (in dollars per share)	0.06			0.09			0.20	0.27
Undistributed earnings (deficit) (in dollars per share)	0			0			0	0
Basic income per share (in dollars per share)	$ 0.06			$ 0.09			$ 0.20	$ 0.27