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Schedule of Unrealized (losses) Gains for All Equity Investments (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jan. 31, 2023 | Jan. 31, 2022 | Jan. 31, 2023 | Jan. 31, 2022
Net losses recognized during the period on equity investments | $ (228) | $ (2,952) | $ (2,169) | $ (17,446)
Less: net gains recognized during the period on equity investments sold during the period | 22 | 25 | 18 | 10
Unrealized losses recognized during the period on equity investments still held at the reporting date | (250) | (2,977) | (2,187) | (17,456)
Rafael Class B Common Stock [Member] |  |  |  |
Unrealized losses recognized during the period on equity investments still held at the reporting date | 82 | (993) | 9 | (13,486)
Zedge Class B Common Stock [Member] |  |  |  |
Unrealized losses recognized during the period on equity investments still held at the reporting date | $ 3 | $ (168) | $ (24) | $ (330)

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- Definition Amount of recognized unrealized gain (loss) net on equity securities redeemed (FV-NI). + References No definition available. + Details
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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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117546-209714 + Details
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- Definition Amount of unrealized 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 -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(3)(d)) -URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 321 -SubTopic 10 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=126980263&loc=SL75117546-209714 + Details
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