USE OF SPECIAL PURPOSE ENTITIES AND VARIABLE INTEREST ENTITIES - Condensed Consolidated Balance Sheets (Details) - USD ($)	Jun. 30, 2018	Dec. 31, 2017
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 73,380,534	$ 34,347,339
Accrued interest receivable	1,856,506	8,852,036
Loans held for investment	326,883,547	0
Total Assets	459,532,284	2,612,541,116
Accrued interest payable	526,251	6,194,464
Collateralized loan obligations	287,738,948	0
Total Liabilities	309,497,324	$ 2,466,749,839
Hunt CRE 2017-FL1, Ltd.
Variable Interest Entity [Line Items]
Cash and cash equivalents	7,915,511
Accrued interest receivable	1,641,310
Unsettled loan payoffs	20,405,000
Loans held for investment	320,907,160
Total Assets	350,868,981
Accrued interest payable	445,854
Collateralized loan obligations	287,738,948
Total Liabilities	$ 288,184,802