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Schedule of Unrealized (losses) Gains for All Equity Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Jul. 31, 2022	Jul. 31, 2021	Jul. 31, 2020
Net (losses) gains recognized during the period on equity investments	$ (19,248)	$ 8,830	$ (336)
Less: net gains recognized during the period on equity investments redeemed during the period	10	1,090
Unrealized (losses) gains recognized during the period on equity investments still held at the reporting date	(19,258)	7,740	(336)
Rafael Class B Common Stock [Member]
Unrealized (losses) gains recognized during the period on equity investments still held at the reporting date	(14,101)	8,291	(195)
Zedge Class B Common Stock [Member]
Unrealized (losses) gains recognized during the period on equity investments still held at the reporting date	$ (533)	$ 591	$ (9)

X

- Definition

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

+ References

No definition available.

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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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- 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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