COMMERCIAL MORTGAGE LOANS HELD-FOR-INVESTMENT - Summary of Commercial Mortgage Loans (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2020 USD ($) mortgage_loan		Dec. 31, 2019 USD ($) mortgage_loan
Accounts, Notes, Loans and Financing Receivable [Line Items]
One Month LIBOR Rate	$ 0.0138		$ 0.0170
Weighted Average LIBOR Floor Rate	0.0160		0.0156
Commercial mortgage loans held-for-investment, at amortized cost	639,366,297	[1]	635,260,420
Commercial real estate portfolio segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Unpaid Principal Balance	639,366,297		635,260,420
Carrying Value	$ 639,366,297		$ 635,260,420
Loan Count | mortgage_loan	51		51
Weighted average, floating rate loan, percentage	100.00%		100.00%
Weighted average coupon rate, percentage	5.30%		5.40%
Weighted average, life (in years)	3 years 8 months 12 days		3 years 9 months 18 days
Commercial mortgage loans held-for-investment, at amortized cost	$ 639,366,297		$ 635,260,420
Outstanding senior secured loans from loan participations	12,052,723		6,102,464
Hunt CMT | Commercial real estate portfolio segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Commercial mortgage loans held-for-investment, at amortized cost	$ 627,313,574		$ 629,157,956

[1] Our consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs") as the Company was the primary beneficiary of these VIEs. As of March 31, 2020 and December 31, 2019, assets of consolidated VIEs related to Hunt CRE 2017-F1, Ltd. and Hunt CRE 2018-FL2, Ltd. totaled 636,607,029 and $636,541,489, respectively and the liabilities of consolidated VIEs related to Hunt CRE 2017-FL1, Ltd. and Hunt CRE 2018-FL2, Ltd totaled 506,907,671 and $506,662,238 respectively. See Note 5 for further discussion.