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Consolidated Statements of Cash Flows (Unaudited) - USD ($)
 3 Months Ended
Oct. 31, 2024
Oct. 31, 2023
Cash Flows From Operating Activities:    
Net income (loss) $ 26,657 $ (192,544)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:    
Bad debt expense (recoveries) 931 (33,000)
Provision (benefit) for deferred income taxes 6,000 (55,000)
Depreciation 444,066 428,264
Amortization of deferred charges 125,300 119,038
Operating lease expense in excess of cash payments 208,826 213,201
Deferred finance costs included in interest expense 9,528 9,528
Deferred costs (106,867) (152,088)
Net unrealized loss on marketable securities 163,567
Changes in Operating Assets and Liabilities:    
Receivables 159,659 74,380
Prepaid expenses and other assets 1,354,374 1,263,962
Accounts payable and accrued expenses (391,426) (81,912)
Security deposits payable (34,407)
Cash provided by operating activities 1,802,641 1,757,396
Cash Flows From Investing Activities:    
Acquisition of property and equipment (460,104) (312,727)
Cash (used) in investing activities (460,104) (312,727)
Cash Flows From Financing Activities:    
Payments - mortgages (336,065) (321,574)
Cash (used) in financing activities (336,065) (321,574)
Increase in cash, cash equivalents and restricted cash 1,006,472 1,123,095
Cash, cash equivalents and restricted cash at beginning of period 2,285,601 2,217,735
Cash, cash equivalents and restricted cash at end of period $ 3,292,073 $ 3,340,830