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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)
3 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Cash Flows From Operating Activities:    
Net income $ 438,672 $ 436,024
Adjustments to reconcile net income to net cash provided by operating activities:    
Depreciation and amortization 440,985 418,555
Amortization of deferred charges 86,100 83,804
Realized (gain) on sale of marketable securities (386) (182,841)
Loss on disposition of property and equipment    4,291
Other assets - unbilled receivables (8,907) (44,926)
- deferred charges    (39,073)
Deferred income taxes 105,000 131,000
Deferred revenue (291,667)   
Changes in:    
Receivables (100,863) (56,241)
Income taxes refundable 196,006 325,072
Prepaid expenses 512,096 497,465
Accounts payable (30,031) 26,822
Payroll and other accrued liabilities (107,765) (273,570)
Income taxes payable 10,068 140,565
Other taxes payable (3,757) (2,968)
Cash provided by operating activities 1,245,551 1,463,979
Cash Flows From Investing Activities:    
Capital expenditures (404,643) (1,439,328)
Security deposits (2,655) 141,882
Marketable securities:    
Receipts from sales or maturities 270,974 1,247,323
Payments for purchases (273,307) (9,242)
Cash (used) by investing activities (409,631) (59,365)
Cash Flows From Financing Activities:    
Increase (decrease) - security deposits 1,649 (141,882)
Mortgage and other debt payments (43,695) (40,640)
Cash (used) by financing activities (42,046) (182,522)
Increase in cash and cash equivalents 793,874 1,222,092
Cash and cash equivalents at beginning of period 1,892,760 664,718
Cash and cash equivalents at end of period $ 2,686,634 $ 1,886,810