ORGANIZATION AND BUSINESS OPERATIONS - Narrative (Details)							3 Months Ended		12 Months Ended
	Mar. 18, 2019 USD ($)	Feb. 14, 2019 USD ($) $ / shares shares	Jan. 15, 2019 USD ($)	Apr. 30, 2018 USD ($) Loan_Participation	Jan. 18, 2018 USD ($) $ / shares shares	Jan. 17, 2018	Mar. 31, 2019 USD ($) shares	Mar. 31, 2018	Dec. 31, 2018 USD ($) $ / shares shares	Aug. 20, 2018 USD ($)
Variable Interest Entity [Line Items]
Total Assets							$ 659,406,989		$ 679,352,035
Total Liabilities							550,136,102		529,148,697
Cash and cash equivalents							13,640,181		7,882,862
Collateralized loan obligations							504,460,023		503,978,918
Principal amount							40,250,000
Preferred stock, liquidation preference, value (in dollars)							$ 25		$ 25
Preferred stock, shares outstanding (in shares) | shares							0		1,610,000
Preferred stock, dividend rate, percentage							8.75%	8.75%	8.75%
Preferred stock, liquidation preference (in dollars per share) | $ / shares									$ 25
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
Oaks Holding I 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							651,759,971		$ 638,744,038
Total Liabilities							550,431,000		510,181,000
Cash and cash equivalents							13,640,181		7,882,862
Collateralized loan obligations							510,181,000		510,181,000
Carrying Value
Variable Interest Entity [Line Items]
Total Assets							651,759,971		638,744,038
Total Liabilities							543,760,567		503,978,918
Cash and cash equivalents							13,640,181		7,882,862
Collateralized loan obligations							504,460,023		503,978,918
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
Hunt CRE 2017-FL1, Ltd. | Carrying Value
Variable Interest Entity [Line Items]
Collateralized loan obligations				$ 287,600,000
Hunt CRE 2018-FL2, Ltd
Variable Interest Entity [Line Items]
Cash and cash equivalents										$ 59,700,000
Collateralized loan obligations										285,000,000
Unpaid Principal Balance							219,400,000			$ 225,300,000
Commercial real estate portfolio segment
Variable Interest Entity [Line Items]
Unpaid Principal Balance							585,770,803		555,172,891
Carrying Value							585,770,803		$ 555,172,891
Commercial real estate portfolio segment | Hunt CRE 2018-FL2, Ltd
Variable Interest Entity [Line Items]
Carrying Value							215,400,000
Delayed Draw Facility | Credit Agreement
Variable Interest Entity [Line Items]
Principal amount		$ 40,250,000.00	$ 40,250,000.00				$ 40,250,000.00
Maturity term			6 years
Proceeds from debt		39,300,000
Delayed Draw Facility | Credit Agreement | Five year period following initial draw
Variable Interest Entity [Line Items]
Interest fixed rate			7.25%
Delayed Draw Facility | Credit Agreement | First four months after fifth anniversary
Variable Interest Entity [Line Items]
Interest fixed rate			0.25%
Delayed Draw Facility | Credit Agreement | Second four months after fifth anniversary
Variable Interest Entity [Line Items]
Interest fixed rate			0.375%
Delayed Draw Facility | Credit Agreement | Last four months until maturity
Variable Interest Entity [Line Items]
Interest fixed rate			0.50%
Redeemable Preferred Stock
Variable Interest Entity [Line Items]
Preferred stock, liquidation preference, value (in dollars)		$ 1,100,000
Preferred stock, shares outstanding (in shares) | shares		1,610,000
Preferred stock, dividend rate, percentage		8.75%
Preferred stock, liquidation preference (in dollars per share) | $ / shares		$ 25
Support Agreement | Hunt Investment Management, LLC
Variable Interest Entity [Line Items]
Maximum reduction of expense reimbursement per annum (percent)	25.00%
Maximum expense reimbursement reduction per annum	$ 568,000
Aggregate reduction of expense reimbursement	$ 1,960,000