CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Revenues
Rental income	$ 8,371,292	$ 7,850,870
Total revenues	8,668,322	8,110,979
Expenses
Property operations	3,577,358	3,262,603
General and administrative	2,126,804	1,826,446
Depreciation and amortization	1,438,908	1,398,358
Business development	124,428	198,000
Total expenses	7,267,498	6,685,407
Operating income	1,400,824	1,425,572
Other income (expense)
Dividend and interest income	71,666	76,296
Unrealized gain on marketable equity securities	193,705	15,517
Interest expense	(1,075,576)	(897,937)
Total other income (expense), net	(810,205)	(806,124)
Net income and comprehensive income	$ 590,619	$ 619,448
Earnings per share
Basic	$ 0.08	$ 0.08
Diluted	$ 0.08	$ 0.08
Weighted average shares outstanding
Basic	7,699,966	7,622,287
Diluted	7,702,117	7,624,122
Other property related income
Revenues
Revenues	$ 283,570	$ 260,109
Management fees and other income
Revenues
Revenues	$ 13,460