USE OF SPECIAL PURPOSE ENTITIES AND VARIABLE INTEREST ENTITIES - Condensed Consolidated Statement of Operations (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Variable Interest Entity [Line Items]
Net interest income	$ 4,517,310	$ 4,175,642
General and administrative fees	(680,314)	(765,892)
Net income	2,808,643	1,551,671
Hunt CRE 2017-FL1, Ltd. and Hunt CRE 2018-FL2, Ltd.
Variable Interest Entity [Line Items]
Interest income	7,263,861	9,032,178
Interest expense	(2,185,242)	(4,237,889)
Net interest income	5,078,619	4,794,289
General and administrative fees	(120,586)	(145,986)
Net income	$ 4,958,033	$ 4,648,303