CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net (loss) income	$ (356,424)	$ 187,823
Adjustments to reconcile net (loss) income to net cash provided by operating activities
Depreciation and amortization	515,937	351,644
Unrealized loss (gain) on marketable equity securities	190,405	(154,449)
Amortization of loan procurement costs	50,047	50,298
Stock-based compensation	29,162	54,160
Changes in operating assets and liabilities:
Accounts receivable	55,423	(23,736)
Prepaid expenses and other assets	(84,099)	(19,914)
Accounts payable and accrued expenses	224,911	167,521
Net cash provided by operating activities	625,362	613,347
Cash flows from investing activities
Construction	(746,487)	(22,401)
Improvements and equipment additions	(53,643)	(7,390)
Net cash used in investing activities	(800,130)	(29,791)
Cash flows from financing activities
Principal payments on note payable	(120,850)	(115,898)
Dividends paid	(605,492)	(499,044)
Net cash used in financing activities	(726,342)	(614,942)
Net decrease in cash and cash equivalents	(901,110)	(31,386)
Cash, cash equivalents, and restricted cash, beginning of period	4,253,565	1,712,266
Cash, cash equivalents, and restricted cash, end of period	3,352,455	1,680,880
Supplemental schedule of cash flow information
Interest paid	$ 267,132	$ 207,200