EARNINGS PER SHARE - Earnings per Share (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Net income (loss)	$ 1,551,671	$ 1,474,767
Less dividends:
Common stock	1,870,416	1,658,136
Preferred stock	3,750	480,472
Deemed dividend on preferred stock related to redemption	0	3,093,028
Dividends	1,874,166	5,231,636
Undistributed earnings (deficit)	$ (322,495)	$ (3,756,869)
Common Stock
Less dividends:
Distributed earnings (in dollars per share)	$ 0.08	$ 0.07
Undistributed earnings (deficit) (in dollars per share)	(0.02)	(0.16)
Total (in dollars per share)	0.06	(0.09)
Unvested Share-Based Payment Awards
Less dividends:
Distributed earnings (in dollars per share)	0.08	0.07
Undistributed earnings (deficit) (in dollars per share)	0	0
Total (in dollars per share)	$ 0.08	$ 0.07