Condensed Consolidated Statements of Operations - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income:
Commercial mortgage loans held-for-investment	$ 7,470,117	$ 9,165,805
Cash and cash equivalents	4,300	28,167
Interest expense:
Collateralized loan obligations	(2,185,242)	(4,237,889)
Secured term loan	(771,865)	(780,441)
Net interest income	4,517,310	4,175,642
Other income (loss):
Unrealized (loss) on mortgage servicing rights	(20,455)	(877,749)
Servicing income, net	124,156	194,147
Other income	0	2
Total other income (loss)	103,701	(683,600)
Expenses:
Management and incentive fees	720,999	584,821
General and administrative expenses	680,314	765,892
Operating expenses reimbursable to Manager	312,454	461,121
Other operating expenses	34,753	300,926
Compensation expense	49,135	54,132
Total expenses	1,797,655	2,166,892
Net income before provision for income taxes	2,823,356	1,325,150
(Provision for) benefit from income taxes	(14,713)	226,521
Net income	2,808,643	1,551,671
Dividends to preferred stockholders	(3,708)	(3,750)
Net income attributable to common stockholders	2,804,935	1,547,921
Earnings per share:
Net income attributable to common stockholders (basic and diluted)	$ 2,804,935	$ 1,547,921
Weighted average number of shares of common stock outstanding (in shares)	24,943,383	24,911,483
Basic and diluted income per share (in dollars per share)	$ 0.11	$ 0.06
Dividends declared per share of common stock (in dollars per share)	$ 0.09	$ 0.08