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Fair Value Measurements (Details) - Schedule of fair value on a recurring basis and where they are classified within the fair value hierarchy - USD ($) $ in Thousands	Jul. 31, 2022	Jul. 31, 2021
Fair Value Measurements (Details) - Schedule of fair value on a recurring basis and where they are classified within the fair value hierarchy [Line Items]
Available-for-sale securities	$ 36,698
Hedge funds	4,764	$ 5,268
Total	41,462	5,268
Level 1 [Member]
Fair Value Measurements (Details) - Schedule of fair value on a recurring basis and where they are classified within the fair value hierarchy [Line Items]
Available-for-sale securities
Hedge funds
Total
Level 2 [Member]
Fair Value Measurements (Details) - Schedule of fair value on a recurring basis and where they are classified within the fair value hierarchy [Line Items]
Available-for-sale securities	36,698
Hedge funds
Total	36,698
Level 3 [Member]
Fair Value Measurements (Details) - Schedule of fair value on a recurring basis and where they are classified within the fair value hierarchy [Line Items]
Available-for-sale securities
Hedge funds	4,764	5,268
Total	$ 4,764	$ 5,268

X

- Definition

Amount of investments in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

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- Definition

Carrying amount as of the balance sheet date of amounts received.

+ References

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- Definition

Fair value of equity securities designated as available for sale, which are allocated to the segregated group of participating or dividend-paying policies and contracts identified as the closed block. Also a component of change in other comprehensive income in the period, which is reflected in the closed block disclosure.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 805
-Section 50
-Paragraph 3
-Subparagraph (b)(1)
-URI https://asc.fasb.org/extlink&oid=124505872&loc=d3e30806-158569

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 805
-Section 55
-Paragraph 4
-URI https://asc.fasb.org/extlink&oid=124502525&loc=d3e31071-158570

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