SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details)				3 Months Ended	9 Months Ended	12 Months Ended
		Feb. 22, 2022 shares	May 05, 2021 shares	Jun. 30, 2023 USD ($)	Sep. 30, 2023 USD ($) loan sub-servicer realizedLoanLoss $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Jan. 01, 2023 USD ($) $ / shares	Feb. 14, 2019 USD ($)	Jan. 15, 2019 USD ($)	Dec. 15, 2015 USD ($)
Debt and Equity Securities, FV-NI [Line Items]
Accumulated Deficit | $	[1]				$ (42,360,057)	$ (31,250,852)
Number of realized loan losses since inception in 2013 | realizedLoanLoss					1
Number of commercial real estate loans included in loan performance analytical model | loan					100,000
Number of sub-servicers | sub-servicer					2
Principal amount | $					$ 47,750,000	$ 47,750,000
Common stock, shares authorized (in shares) | shares					450,000,000	450,000,000
Common stock, par value (in dollars per share) | $ / shares					$ 0.01	$ 0.01
Common stock, shares issued (in shares) | shares					52,231,152	52,231,152
Common stock, shares outstanding (in shares) | shares					52,231,152	52,231,152
Stock repurchase program, authorized amount | $										$ 10,000,000
Preferred stock, shares authorized (in shares) | shares					50,000,000	50,000,000
Preferred stock, par value (in dollars per share) | $ / shares					$ 0.01	$ 0.01
Preferred stock, shares issued (in shares) | shares					2,400,000	2,400,000
Preferred stock, dividend rate, percentage					7.875%	7.875%
Preferred stock, shares outstanding (in shares) | shares					2,400,000	2,400,000
Cost Recovery Method
Debt and Equity Securities, FV-NI [Line Items]
Number of non accrual loans | loan					1
Unpaid principal value | $					$ 12,200,000
Cash Basis Method
Debt and Equity Securities, FV-NI [Line Items]
Number of non accrual loans | loan					2
Unpaid principal value | $					$ 56,400,000
Transition adjustment
Debt and Equity Securities, FV-NI [Line Items]
Share price (in dollars per share) | $ / shares							$ 0.07
Common Stock
Debt and Equity Securities, FV-NI [Line Items]
Issuance of common stock (in shares) | shares		27,277,269
Series A Cumulative Redeemable Preferred Stock
Debt and Equity Securities, FV-NI [Line Items]
Preferred stock, shares authorized (in shares) | shares					50,000,000	50,000,000
Preferred stock, par value (in dollars per share) | $ / shares					$ 0.01	$ 0.01
Preferred stock, shares issued (in shares) | shares			2,400,000		2,400,000	2,400,000
Preferred stock, dividend rate, percentage			7.875%
Preferred stock, shares outstanding (in shares) | shares					2,400,000	2,400,000
Delayed Draw Facility | Credit Agreement
Debt and Equity Securities, FV-NI [Line Items]
Principal amount | $					$ 47,750,000			$ 40,250,000	$ 40,250,000
Accounting Standards Update 2016-13
Debt and Equity Securities, FV-NI [Line Items]
Accumulated Deficit | $							$ 3,600,000
Accounting Standards Update 2016-13 | Transition adjustment
Debt and Equity Securities, FV-NI [Line Items]
Accumulated Deficit | $							$ 3,591,440
Other Operating Expenses
Debt and Equity Securities, FV-NI [Line Items]
Payments of debt issuance costs | $				$ 1,684,618
Collateralized Loan Obligations
Debt and Equity Securities, FV-NI [Line Items]
Maximum exposure to loss from consolidated trusts | $					$ 234,850,000	$ 166,250,000

[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 September 30, 2023 and December 31, 2022, assets of consolidated VIEs totaled $1,384,961,307 and $1,005,507,371, respectively and the liabilities of consolidated VIEs totaled $1,149,063,668 and $831,575,144 respectively. See Note 4 for further discussion.