Financial Instruments and Credit Risk Concentrations	6 Months Ended
Jan. 31, 2022
Fair Value Disclosures [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. Five tenants accounted for approximately 66% of receivables as of January 31, 2022 and July 31, 2021, respectively. During the six months ended January 31, 2022 and 2021, two tenants accounted for 29% and 30% of total rental revenue, respectively.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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