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Cash Flow Information (Tables)
6 Months Ended
Jan. 31, 2025
Supplemental Cash Flow Elements [Abstract]  
Schedule of cash and cash equivalents and restricted cash
           
    January 31  
    2025     2024  
Cash and cash equivalents   $ 1,490,663     $ 691,515  
Restricted cash, tenant security deposits     904,174       984,162  
Restricted cash, other     71,785       71,763  
    $ 2,466,622     $ 1,747,440  
Schedule of supplemental disclosure
           
Supplemental disclosure:   Six Months Ended  
    January 31  
    2025     2024  
Cash Flow Information                
Interest paid, net of capitalized interest of $36,050 (2025) and $48,364 (2024)   $ 51,635     $ 73,178