COMMERCIAL MORTGAGE LOANS HELD-FOR-INVESTMENT - Loan Portfolio Activity (Details) - USD ($)		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	[1]	$ 1,071,889,518
Purchases and advances		594,201,680	$ 345,921,827
Principal payments		(277,481,511)	(293,326,723)
Accretion of purchase discount		1,070,701	125,098
Amortization of purchase premium		(19,253)	(61,144)
Accretion of deferred loan fees		292,073	27,084
Cumulative-effect adjustment upon adoption of ASU 2013-16	[1]	1,383,881,197	1,071,889,518
Ending Balance	[1]	1,383,881,197	1,071,889,518
Commercial Real Estate Portfolio Segment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		1,071,889,518	1,001,825,294
Purchases and advances		594,201,680	345,158,577
Principal payments		(277,481,511)	(270,926,723)
Accretion of purchase discount		1,070,701	125,098
Amortization of purchase premium		(19,253)	(61,144)
Accretion of deferred loan fees		292,073	27,084
Cumulative-effect adjustment upon adoption of ASU 2013-16		1,383,881,197	1,071,889,518
Provision for credit losses		(2,522,510)	(4,258,668)
Ending Balance		1,383,881,197	1,071,889,518
Commercial Real Estate Portfolio Segment | Accounting Standards Update 2016-13 | Minimum
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance		0
Cumulative-effect adjustment upon adoption of ASU 2013-16		(3,549,501)	0
Ending Balance		$ (3,549,501)	$ 0

[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 December 31, 2023 and December 31, 2022, assets of the consolidated VIEs totaled $1,384,136,334 and $1,005,507,371, respectively and the liabilities of consolidated VIEs totaled $1,150,207,290 and $831,575,144, respectively. See Note 4 for further discussion.