CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net income	$ 283,207	$ 411,247
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	404,921	405,615
Unrealized loss (gain) on marketable equity securities	225,751	(214,736)
Unrealized (gain) loss on interest rate cap premium	(37,552)	3
Amortization of loan procurement costs	35,079	49,784
Stock-based compensation	52,604	31,706
Changes in operating assets and liabilities:
Accounts receivable	1,060	28,002
Prepaid expenses and other assets	42,510	(90,135)
Accounts payable and accrued expenses	99,474	54,332
Net cash provided by operating activities	1,107,054	675,818
Cash flows from investing activities
Improvements and equipment additions	(29,490)	(42,035)
Net cash used in investing activities	(29,490)	(42,035)
Cash flows from financing activities
Issuance of common stock, net of expenses	198,370
Principal payments on note payable	(131,401)	(126,015)
Dividends paid	(699,363)	(607,177)
Net cash used in financing activities	(632,394)	(733,192)
Net increase (decrease) in cash, cash equivalents, and restricted cash	445,170	(99,409)
Cash, cash equivalents, and restricted cash, beginning of period	3,063,699	1,955,443
Cash, cash equivalents, and restricted cash, end of period	3,508,869	1,856,034
Supplemental cash flow and noncash information
Cash paid for interest	191,697	237,477
Supplemental disclosure of noncash activities:
Dividends payable	$ 976	$ 126