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Financial Instruments and Credit Risk Concentrations
6 Months Ended
Jan. 31, 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.

Four tenants accounted for approximately 62% and 61% of receivables as of January 31, 2024 and July 31, 2023, respectively. During the six months ended January 31, 2024 and 2023, two tenants accounted for 27% and 30% of total rental revenue, respectively.