CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Oct. 31, 2015	Oct. 31, 2014
Cash Flows From Operating Activities:
Net income	$ 401,375	$ 438,672
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	406,750	440,985
Amortization of deferred charges	$ 86,579	86,100
Realized (gain) on sale of marketable securities		(386)
Other assets - unbilled receivables	$ 94,936	(8,907)
Deferred income taxes	239,000	105,000
Deferred revenue	(291,667)	(291,667)
Changes in:
Receivables	131,187	(100,863)
Income taxes refundable	(174,654)	196,006
Prepaid expenses	578,417	512,096
Accounts payable	29,509	(30,031)
Payroll and other accrued liabilities	$ (207,296)	(107,765)
Income taxes payable		10,068
Other taxes payable	$ (2,709)	(3,757)
Cash provided by operating activities	1,291,427	1,245,551
Cash Flows From Investing Activities:
Capital expenditures	(821,347)	(404,643)
Security deposits	$ (3,679)	(2,655)
Marketable securities:
Receipts from sales or maturities		270,974
Payments for purchases	$ (9,541)	(273,307)
Cash (used) by investing activities	(834,567)	(409,631)
Cash Flows From Financing Activities:
Increase - security deposits	1,579	1,649
Mortgage and other debt payments	(36,895)	(43,695)
Cash (used) by financing activities	(35,316)	(42,046)
Increase in cash and cash equivalents	421,544	793,874
Cash and cash equivalents at beginning of period	4,085,704	1,892,760
Cash and cash equivalents at end of period	$ 4,507,248	$ 2,686,634