ORGANIZATION AND BUSINESS OPERATIONS - Narrative (Details)	Apr. 30, 2018 USD ($) Loan_Participation	Jan. 18, 2018 USD ($) $ / shares shares	Jan. 17, 2018	Jun. 30, 2018 USD ($)	Dec. 31, 2017 USD ($)
Variable Interest Entity [Line Items]
Total Assets				$ 459,532,284	$ 2,612,541,116
Total Liabilities				309,497,324	2,466,749,839
Cash and cash equivalents				73,380,534	34,347,339
Collateralized loan obligations				287,738,948	0
Oaks Funding, LLC
Variable Interest Entity [Line Items]
Total Assets				0
Total Liabilities				0
Oaks Funding II, LLC
Variable Interest Entity [Line Items]
Total Assets				0
Total Liabilities				0
Hunt | Private Placement
Variable Interest Entity [Line Items]
Common stock issued (in shares) | shares		1,539,406
Common stock, shares issued (in dollars per share) | $ / shares		$ 4.77
Aggregate capital raise		$ 7,342,967
XL Investments | Hunt
Variable Interest Entity [Line Items]
Purchase premium (percentage)			56.90%
Outstanding common shares owned (percentage)		9.50%
XL Investments | Hunt | Private Placement
Variable Interest Entity [Line Items]
Common stock issued (in shares) | shares		710,495
Hunt CMT
Variable Interest Entity [Line Items]
Aggregate purchase price	$ 68,000,000
Number of loan participations | Loan_Participation	8
Assets acquired	$ 100,000
Loan participations acquired	6,200,000
Face Amount
Variable Interest Entity [Line Items]
Total Assets				408,196,314	45,622,602
Total Liabilities				290,732,000	1,234,522,000
Cash and cash equivalents				73,380,534	34,347,339
Collateralized loan obligations				290,732,000
Carrying Value
Variable Interest Entity [Line Items]
Total Assets				408,196,314	45,622,602
Total Liabilities				287,738,948	1,234,522,000
Cash and cash equivalents				73,380,534	$ 34,347,339
Collateralized loan obligations				287,738,948
Hunt CRE 2017-FL1, Ltd.
Variable Interest Entity [Line Items]
Total Assets				350,868,981
Total Liabilities				288,184,802
Cash and cash equivalents				7,915,511
Collateralized loan obligations				287,738,948
Hunt CRE 2017-FL1, Ltd. | Hunt CMT
Variable Interest Entity [Line Items]
Portfolio balance	339,400,000
Cash and cash equivalents	9,800,000
Hunt CRE 2017-FL1, Ltd. | Face Amount
Variable Interest Entity [Line Items]
Collateralized loan obligations	290,700,000			290,732,000
Hunt CRE 2017-FL1, Ltd. | Carrying Value
Variable Interest Entity [Line Items]
Collateralized loan obligations	$ 287,600,000			$ 287,738,948