CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities
Net income	$ 573,901	$ 543,969
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Depreciation and amortization	1,056,087	1,047,553
Unrealized gain on marketable equity securities	(355,102)	4,579
Amortization of loan procurement costs	150,708	31,806
Stock-based compensation	135,320	54,041
Changes in operating assets and liabilities:
Accounts receivable	(34,479)	6,823
Prepaid expenses and other assets	(193,262)	(186,005)
Accounts payable and accrued expenses	265,957	(33,524)
Net cash provided by operating activities	1,599,130	1,469,242
Cash flows from investing activities
Construction	(424,382)	(74,808)
Improvements and equipment additions	(53,710)	(36,342)
Net cash used in investing activities	(478,092)	(111,150)
Cash flows from financing activities
Principal payments on note payable	(351,362)	(75,797)
Line of credit borrowing	380,000
Dividends paid	(1,501,883)	(1,493,354)
Net cash used in financing activities	(1,473,245)	(1,569,151)
Net decrease in cash and cash equivalents	(352,207)	(211,059)
Cash, cash equivalents, and restricted cash, beginning of period	1,712,266	2,256,415
Cash, cash equivalents, and restricted cash, end of period	1,360,059	2,045,356
Supplemental schedule of cash flow information
Interest paid	$ 618,344	$ 628,403