COMMERCIAL MORTGAGE LOANS HELD-FOR-INVESTMENT - Loan Portfolio Activity (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Commercial Mortgage Loans Held-for-Investment
Balance at December 31, 2022	[1]			$ 1,071,889,518
Purchases, advances and originations				517,608,525	$ 269,596,827
Principal payments				(203,425,029)	(247,335,751)
Accretion of purchase discount				431,009	125,098
Amortization of purchase premium				(16,201)	(55,804)
Accretion of deferred loan fees				195,022	0
Provision for credit losses, net		$ (791,563)	$ (1,521,023)	(1,166,962)	$ (1,872,937)
Balance at September 30, 2023	[1]	1,350,831,756		1,350,831,756
Commercial Real Estate Portfolio Segment
Commercial Mortgage Loans Held-for-Investment
Balance at December 31, 2022				1,071,889,518
Purchases, advances and originations				517,608,525
Principal payments				(234,559,887)
Accretion of purchase discount				431,009
Amortization of purchase premium				(16,201)
Accretion of deferred loan fees				195,022
Provision for credit losses, net				(1,166,729)
Balance at September 30, 2023		$ 1,350,831,756		1,350,831,756
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 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.