CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND RETAINED EARNINGS - USD ($)	3 Months Ended		9 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Revenues
Rental income (Notes 4 and 7)	$ 4,854,910	$ 4,660,787	$ 14,431,671	$ 13,674,289
Recovery of real estate taxes				10,952
Revenue to temporarily vacate lease (Note 12)		291,667		875,001
Total revenues	4,854,910	4,952,454	14,431,671	14,560,242
Expenses
Real estate operating expenses	2,918,858	2,512,506	8,491,805	7,735,755
Administrative and general expenses	1,062,316	1,092,032	3,433,154	3,381,034
Depreciation (Note 6)	443,697	423,791	1,311,386	1,253,091
Total expenses	4,424,871	4,028,329	13,236,345	12,369,880
Income from operations before investment income, interest expense and income taxes	430,039	924,125	1,195,326	2,190,362
Investment income and interest expense:
Investment income (Note 3)	15,909	41,906	90,131	80,470
Interest expense (Notes 5, 9 and 13)	(44,776)	(50,797)	(191,961)	(173,011)
Total investment income and interest expense	(28,867)	(8,891)	(101,830)	(92,541)
Income from operations before income taxes	401,172	915,234	1,093,496	2,097,821
Income taxes provided (benefit)	83,000	309,000	(2,074,000)	706,000
Net income	318,172	606,234	3,167,496	1,391,821
Retained earnings, beginning of period	48,244,569	44,255,293	45,395,245	43,469,706
Retained earnings, end of period	$ 48,562,741	$ 44,861,527	$ 48,562,741	$ 44,861,527
Income per common share (Note 2)	$ 0.16	$ 0.30	$ 1.57	$ 0.69
Dividends per share
Average common shares outstanding	2,015,780	2,015,780	2,015,780	2,015,780