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Fair Value Measurements (Details Narrative) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Apr. 30, 2024 | Apr. 30, 2023 | Apr. 30, 2024 | Apr. 30, 2023 | Jul. 31, 2023
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |
Investment in hedge funds | $ 2,900 |  | $ 2,900 |  | $ 3,000
Payment for Contingent Consideration Liability, Investing Activities |  |  | 1,900 | $ 2,200 |
Business combination contingent consideration prior acquisition value | $ 100 |  | 100 |  |
Business combination, contingent consideration arrangements, change in amount of contingent consideration, liability |  |  | $ 100 | 1,600 |
Other Operating Income (Expense) [Member] |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |
Liabilities, fair value adjustment |  | $ 200 |  | $ 200 |
Common Class B [Member] |  |  |  |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |  |  |  |
Business combination contingent consideration prior acquisition shares |  |  | 2,679 |  |
Business combination contingent consideration prior acquisition value |  |  | $ 100 |  |

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