Condensed Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities:
Net income	$ 2,954,799	$ 2,808,643
Adjustments to reconcile net income to net cash provided by operating activities:
Accretion of commercial mortgage loans held-for-investment discounts	(100,572)	207,767
Amortization of commercial mortgage loans held-for-investment premiums	45,349	0
Amortization of deferred offering costs	(71,671)	0
Amortization of deferred financing costs	680,510	253,254
Unrealized (gain) loss on mortgage servicing rights	(147,382)	20,455
Restricted stock compensation expense	4,638	2,885
Net change in:
Accrued interest receivable	1,259,264	(157,390)
Other assets	154,922	75,880
Accrued interest payable	112,996	(39,806)
Fees and expenses payable to Manager	(501,142)	48,348
Other accounts payable and accrued expenses	164,183	(47,753)
Net cash provided by operating activities	4,555,894	3,172,283
Cash flows from investing activities:
Purchase of commercial mortgage loans held-for-investment	(184,992,167)	(34,888,000)
Principal payments from commercial mortgage loans held-for-investment	131,756,365	98,068,085
Investment related receivable	0	(34,539,187)
Net cash (used in) provided by investing activities	(53,235,802)	28,640,898
Cash flows from financing activities:
Proceeds from issuance of common stock	81,136,044	0
Payment of collateralized loan obligations	0	(54,073,905)
Payment of deferred financing costs	(119,375)	0
Dividends paid on common stock	(2,245,309)	(3,242,640)
Dividends paid on preferred stock	(1,181,250)	0
Net cash provided by (used in) financing activities	77,590,110	(57,316,545)
Net increase in cash, cash equivalents and restricted cash	28,910,202	(25,503,364)
Cash, cash equivalents and restricted cash, beginning of period	18,279,052	69,375,356
Cash, cash equivalents and restricted cash, end of period	47,189,254	43,871,992
Supplemental disclosure of cash flow information
Cash paid for interest	4,133,373	2,535,893
Non-cash investing and financing activities information
Dividends declared but not paid at end of period	$ 4,318,467	$ 2,248,612