CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Cash Flows From Operating Activities
Net income	$ 436,024	$ 500,774
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	418,555	401,257
Amortization of deferred charges	83,804	86,433
Realized (gain) loss on sale of marketable securities	(182,841)	517
Loss on disposition of property and equipment	4,291
Deferred charges	(39,073)
Other assets - unbilled receivables	(44,926)	(66,226)
Deferred income taxes	131,000	3,000
Changes in:
Receivables	(56,241)	(46,695)
Income taxes refundable	325,072
Prepaid expenses	497,465	592,608
Accounts payable	26,822	(14,793)
Payroll and other accrued liabilities	(273,570)	(190,709)
Income taxes payable	140,565	158,698
Other taxes payable	(2,968)	2,652
Net cash provided by operating activities	1,463,979	1,427,516
Cash Flows From Investing Activities
Acquisition of property and equipment	(1,439,328)	(228,153)
Security deposits	141,882	(5,105)
Marketable securities:
Receipts from sales or maturities	1,247,323	99,816
Payments for purchases	(9,242)	(253,322)
Cash (used) by investing activities	(59,365)	(386,764)
Cash Flows From Financing Activities
Increase (decrease) - security deposits	(141,882)	5,104
Mortgage and other debt payments	(40,640)	(37,793)
Cash (used) by financing activities	(182,522)	(32,689)
Increase in cash and cash equivalents	1,222,092	1,008,063
Cash and cash equivalents at beginning of period	664,718	1,340,203
Cash and cash equivalents at end of period	$ 1,886,810	$ 2,348,266