CONDENSED CONSOLIDATED STATEMENTS OF INCOME AND RETAINED EARNINGS (USD $)	3 Months Ended		6 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2013	Jan. 31, 2012
Revenues
Rental income (Notes 4 and 8)	$ 4,105,489	$ 4,109,237	$ 8,300,021	$ 8,091,774
Total revenues	4,105,489	4,109,237	8,300,021	8,091,774
Expenses
Real estate operating expenses	2,452,371	2,109,775	4,453,265	4,124,040
Administrative and general expenses	953,205	945,545	1,797,274	1,885,966
Depreciation and amortization (Note 6)	402,485	393,337	803,742	780,134
Loss on disposition of property and equipment	316,021	0	316,021	0
Total expenses	4,124,082	3,448,657	7,370,302	6,790,140
Income (loss) from operations before investment income, interest expense and income taxes	(18,593)	660,580	929,719	1,301,634
Investment income and interest expense:
Investment income (Note 3)	46,873	15,405	57,197	18,217
Interest expense (Notes 5, 7 and 10)	(110,248)	(138,240)	(224,110)	(289,929)
Interest Income (Expense), Net	(63,375)	(122,835)	(166,913)	(271,712)
Income (loss) from operations before income taxes	(81,968)	537,745	762,806	1,029,922
Income taxes provided (benefit)	(71,000)	224,000	273,000	344,000
Net income (loss)	(10,968)	313,745	489,806	685,922
Retained earnings, beginning of period	38,841,044	37,442,094	38,340,270	37,069,917
Retained earnings, end of period	$ 38,830,076	$ 37,755,839	$ 38,830,076	$ 37,755,839
Income (loss) per common share (Note 2) (in dollars per share)	$ (0.01)	$ 0.16	$ 0.24	$ 0.34
Dividends per share (in dollars per share)	$ 0	$ 0	$ 0	$ 0
Average common shares outstanding (in shares)	2,015,780	2,015,780	2,015,780	2,015,780