Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities:
Net income	$ 10,527,222	$ 8,449,770
Adjustments to reconcile net income to net cash provided by operating activities:
Accretion of purchase discount	(46,088)	0
Amortization of premiums on held-for-investment loans	457,749	0
Accretion of collateralized loan obligations discounts, net	207,767	1,137,156
Amortization of deferred offering costs	(32,085)	(40,000)
Amortization of deferred financing costs	1,953,465	1,029,899
Realized loss on mortgage servicing rights	10,910	0
Loss on extinguishment of debt	1,663,926	0
Unrealized loss on mortgage servicing rights	356,772	1,780,528
Restricted stock compensation expense	15,608	20,292
Net change in:
Accrued interest receivable	(1,962,135)	326,737
Deferred offering costs	0	40,000
Other assets	(55,464)	(286,607)
Accrued interest payable	271,119	(372,190)
Fees and expenses payable to Manager	668,802	164,359
Other accounts payable and accrued expenses	(190,621)	(30,735)
Net cash provided by operating activities	13,846,947	12,219,209
Cash flows from investing activities:
Purchase of commercial mortgage loans held-for-investment	(983,694,326)	(57,601,572)
Principal payments from commercial mortgage loans held-for-investment	506,402,705	145,516,658
Net cash (used in) provided by investing activities	(477,291,621)	87,915,086
Cash flows from financing activities:
Proceeds from issuance of common stock	0	5,747,375
Net proceeds from issuance of preferred stock	57,254,935	0
Dividends paid on common stock	(9,978,162)	(7,638,270)
Dividends paid on preferred stock	(2,115,000)	(15,000)
Proceeds from collateralized obligations	833,750,000	0
Proceeds from secured term loan	7,500,000	0
Payment of collateralized loan obligations	(465,316,126)	(44,864,874)
Payment of deferred financing costs	(8,747,277)	0
Net cash provided by (used in) financing activities	412,348,370	(46,770,769)
Net (decrease) increase in cash, cash equivalents and restricted cash	(51,096,304)	53,363,526
Cash, cash equivalents and restricted cash, beginning of period	69,375,356	16,011,830
Cash, cash equivalents and restricted cash, end of period	18,279,052	69,375,356
Supplemental disclosure of cash flow information
Cash paid for interest	13,079,740	13,386,816
Cash paid for income taxes	0	180,898
Non-cash investing and financing activities information
Dividends declared but not paid at end of period	$ 3,426,559	$ 3,242,650