ORGANIZATION AND BUSINESS OPERATIONS - Narrative (Details)	Aug. 20, 2018 USD ($) mortgage_loan	Apr. 30, 2018 USD ($) Loan_Participation	Jan. 18, 2018 USD ($) $ / shares shares	Jan. 17, 2018	Dec. 31, 2018 USD ($) shares	Dec. 31, 2017 USD ($) shares
Variable Interest Entity [Line Items]
Common stock, shares outstanding (in shares) | shares					23,687,664	22,143,758
Total Assets					$ 679,352,035	$ 2,612,541,116
Residential morgate loan aggregate principal balance					555,172,891	0
Cash and cash equivalents					7,882,862	34,347,339
Collateralized loan obligations					503,978,918	0
Hunt CRE 2018-FL2, Ltd.
Variable Interest Entity [Line Items]
Cash and cash equivalents	$ 59,700,000
Collateralized loan obligations	$ 285,000,000
Number of commercial real estate mortgage assets acquired | mortgage_loan	20
Unpaid Principal Balance	$ 225,300,000				219,400,000
Oaks Funding II, LLC
Variable Interest Entity [Line Items]
Total Assets					0
Private Placement | Hunt
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 | Private Placement | Hunt
Variable Interest Entity [Line Items]
Common stock issued (in shares) | shares			710,495
Hunt CMT Equity, LLC
Variable Interest Entity [Line Items]
Consideration transferred		$ 68,000,000
Business acquisition, acquired commercial loans, number of loan participations | Loan_Participation		8
Assets acquired		$ 100,000
Loan participations		6,200,000
Hunt CMT Equity, LLC | Hunt CRE 2017-FL1, Ltd.
Variable Interest Entity [Line Items]
Residential morgate loan aggregate principal balance		339,400,000
Cash and cash equivalents		9,800,000
Face Amount
Variable Interest Entity [Line Items]
Total Assets					638,744,038	45,622,602
Cash and cash equivalents					7,882,862	34,347,339
Collateralized loan obligations					510,181,000	1,234,522,000
Face Amount | Hunt CRE 2017-FL1, Ltd.
Variable Interest Entity [Line Items]
Collateralized loan obligations		290,700,000
Carrying Value
Variable Interest Entity [Line Items]
Total Assets					638,744,038	45,622,602
Cash and cash equivalents					7,882,862	34,347,339
Collateralized loan obligations					503,978,918	1,234,522,000
Carrying Value | Hunt CRE 2017-FL1, Ltd.
Variable Interest Entity [Line Items]
Collateralized loan obligations		$ 287,600,000
Commercial Real Estate Portfolio Segment
Variable Interest Entity [Line Items]
Unpaid Principal Balance					555,172,891	$ 0
Carrying Value					$ 555,172,891
Commercial Real Estate Portfolio Segment | Hunt CRE 2018-FL2, Ltd.
Variable Interest Entity [Line Items]
Carrying Value	$ 215,400,000