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Financial Instruments and Credit Risk Concentrations
9 Months Ended
Apr. 30, 2024
Investments, All Other Investments [Abstract]  
Financial Instruments and Credit Risk Concentrations

4.Financial Instruments and Credit Risk Concentrations:

Financial instruments that are potentially subject to concentrations of credit risk consist principally of marketable securities, restricted cash, cash and cash equivalents, and receivables. Marketable securities, restricted cash, cash, and cash equivalents are placed with multiple financial institutions and instruments to minimize risk. No assurance can be made that such financial institutions and instruments will minimize all such risk.

Three tenants accounted for approximately 53% of receivables as of April 30, 2024, and four tenants accounted for 61% of receivables as of July 31, 2023. During the three and nine months ended April 30, 2024, two tenants accounted for 27% of total rental revenue. During the three and nine months ended April 30, 2023, two tenants accounted for 30% of total rental revenue.