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Schedule of Unrealized (losses) Gains for All Equity Investments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 30, 2023	Apr. 30, 2022	Apr. 30, 2023	Apr. 30, 2022
Net losses recognized during the period on equity investments	$ (480)	$ (3,416)	$ (2,649)	$ (20,862)
Less: net gains recognized during the period on equity investments sold during the period			18	10
Unrealized losses recognized during the period on equity investments still held at the reporting date	(480)	(3,416)	(2,667)	(20,872)
Rafael Class B Common Stock [Member]
Unrealized losses recognized during the period on equity investments still held at the reporting date	11	(578)	20	(14,064)
Zedge Class B Common Stock [Member]
Unrealized losses recognized during the period on equity investments still held at the reporting date	$ (9)	$ (102)	$ (33)	$ (432)

X

- Definition

Amount of recognized unrealized gain (loss) net on equity securities redeemed (FV-NI).

+ References

No definition available.

+ Details

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X

- 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

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X

- 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

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