COMMERCIAL MORTGAGE LOANS HELD-FOR-INVESTMENT - Loan Portfolio Activity (Details) - USD ($)		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Commercial Mortgage Loans Held-for-Investment
Balance at December 31, 2022	[1]	$ 1,071,889,518
Principal payments		(51,625,741)	$ (131,756,365)
Amortization of purchase premium		(5,287)	(45,349)
Accretion of deferred loan fees		64,293	$ 0
Balance at March 31, 2023	[1]	1,016,463,672
Commercial Real Estate Portfolio Segment
Commercial Mortgage Loans Held-for-Investment
Balance at December 31, 2022		1,071,889,518
Principal payments		(52,114,321)
Amortization of purchase premium		(5,287)
Accretion of deferred loan fees		64,293
Reversal of credit losses, net		178,970
Balance at March 31, 2023		1,016,463,672
Commercial Real Estate Portfolio Segment | Minimum | Accounting Standards Update 2016-13
Commercial Mortgage Loans Held-for-Investment
Balance at December 31, 2022		$ (3,549,501)

[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, 2023 and December 31, 2022, assets of consolidated VIEs totaled $1,002,563,861 and $1,005,507,371, respectively and the liabilities of consolidated VIEs totaled $832,342,571 and $831,575,144 respectively. See Note 4 for further discussion.