USE OF SPECIAL PURPOSE ENTITIES AND VARIABLE INTEREST ENTITIES - Condensed Consolidated Statement of Operations (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Variable Interest Entity [Line Items]
Net interest income	$ 4,783,694		$ 4,046,715		$ 8,959,336	$ 8,253,262
General and administrative fees	(978,842)		(895,659)		(1,744,734)	(2,362,344)
Net income	1,878,703	$ 1,551,671	1,394,170	$ 1,474,767	3,430,374	2,868,937
Hunt CRE 2017-FL1, Ltd. and Hunt CRE 2018-FL2, Ltd.
Variable Interest Entity [Line Items]
Interest income	8,292,797		10,165,682		17,324,969	19,978,158
Interest expense	(2,915,638)		(5,456,288)		(7,153,527)	(10,903,177)
Net interest income	5,377,159		4,709,394		10,171,442	9,074,981
General and administrative fees	(149,643)		(121,307)		(295,629)	(281,759)
Net income	$ 5,227,516		$ 4,588,087		$ 9,875,813	$ 8,793,222