CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Cash flows from operating activities
Net income	$ 3,281,251	$ 274,341
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization	1,631,609	1,989,761
Unrealized gain on marketable equity securities	(1,566,731)	(155,139)
Amortization of loan procurement costs	169,868	199,797
Stock-based compensation	194,372	126,035
Changes in operating assets and liabilities:
Accounts receivable	(14,120)	57,557
Prepaid expenses and other assets	(191,764)	(26,314)
Accounts payable and accrued expenses	138,267	(468,710)
Net cash provided by operating activities	3,642,752	1,997,328
Cash flows from investing activities
Improvements and equipment additions	(253,142)	(203,077)
Construction		(1,404,269)
Net cash used in investing activities	(253,142)	(1,607,346)
Cash flows from financing activities
Issuance of common stock, net of expenses	6,215,234
Line of credit (repayment) borrowing	(5,144,000)	230,000
Principal payments on note payable	(512,067)	(491,081)
Line of credit issuance costs	(231,926)
Dividends paid	(2,608,595)	(2,427,023)
Net cash used in financing activities	(2,281,354)	(2,688,104)
Net increase (decrease) in cash, cash equivalents, and restricted cash	1,108,256	(2,298,122)
Cash, cash equivalents, and restricted cash, beginning of period	1,955,443	4,253,565
Cash, cash equivalents, and restricted cash, end of period	3,063,699	1,955,443
Supplemental cash flow and noncash information
Cash paid for interest	881,759	996,904
Supplemental disclosure of noncash activities:
Dividends payable	$ 3,056	$ 358