USE OF SPECIAL PURPOSE ENTITIES AND VARIABLE INTEREST ENTITIES - Condensed Consolidated Statement of Operations (Details) - USD ($)	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Variable Interest Entity [Line Items]
Net interest income	$ 4,831,984			$ 3,795,884			$ 13,791,320	$ 12,049,146
General and administrative fees	(786,651)			(904,413)			(2,531,385)	(3,266,757)
Net income (loss)	2,551,010	$ 1,878,703	$ 1,551,671	2,157,748	$ 1,394,170	$ 1,474,767	5,981,384	5,026,685
Hunt CRE 2017-FL1, Ltd. and Hunt CRE 2018-FL2, Ltd.
Variable Interest Entity [Line Items]
Interest income	7,900,183			9,717,060			25,225,152	29,695,218
Interest expense	(2,495,996)			(5,244,001)			(9,649,523)	(16,147,178)
Net interest income	5,404,187			4,473,059			15,575,629	13,548,040
General and administrative fees	(201,459)			(256,269)			(497,088)	(538,028)
Net income (loss)	$ 5,202,728			$ 4,216,790			$ 15,078,541	$ 13,010,012