COMMERCIAL MORTGAGE LOANS HELD-FOR-INVESTMENT - Allowance for Loan Losses (Details) - USD ($)	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period	$ 4,258,668
Reversal of credit losses, net	(179,684)	$ 0
Allowance for credit losses at end of period	3,357,527
Commercial Loans Held-For-Investment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period	4,258,668	0
Reversal of credit losses, net	(178,970)	0
Charge offs	(4,271,672)	0
Allowance for credit losses at end of period	3,357,527	0
Unfunded Loan Commitment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period	0
Allowance for credit losses at end of period	41,225
Unfunded Loan Commitment | Commercial Loans Held-For-Investment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period	0	0
Reversal of credit losses, net	(714)	0
Charge offs	0	0
Allowance for credit losses at end of period	41,225	0
Transition adjustment | Accounting Standards Update 2016-13 | Commercial Loans Held-For-Investment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period	3,549,501	0
Transition adjustment | Accounting Standards Update 2016-13 | Unfunded Loan Commitment | Commercial Loans Held-For-Investment
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit losses at beginning of period	$ 41,939	$ 0