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Schedule of Unrealized (losses) Gains for All Equity Investments (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jul. 31, 2023 | Jul. 31, 2022 | Jul. 31, 2021
Net (losses) gains recognized during the period on equity investments | $ (2,613) | $ (19,248) | $ 8,830
Less: net gains recognized during the period on equity investments sold during the period | 18 | 10 | 1,090
Unrealized (losses) gains recognized during the period on equity investments still held at the reporting date | (2,631) | (19,258) | 7,740
Rafael Class B Common Stock [Member] |  |  |
Unrealized (losses) gains recognized during the period on equity investments still held at the reporting date | (7) | (14,101) | 8,291
Zedge Class B Common Stock [Member] |  |  |
Unrealized (losses) gains recognized during the period on equity investments still held at the reporting date | $ (28) | $ (533) | $ 591

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- Definition Amount of unrealized and realized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)(d)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 321 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479536/321-10-50-4 + Details
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