Note 12 - Investments in Equity Securities - Changes in Investments in Equity Securities (Details) - USD ($) $ in Thousands	12 Months Ended
Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Balance	$ 14,834	$ 0
Anfield Debt Settlement (Note 6)		10,951
Additions	47,192	15,215	$ (0)
Unrealized loss on revaluation of equity securities	(13,083)	(1,898)
Transferred as consideration for UEX Acquisition (Note 3)	(5,830)
Sale of investment in public listed companies	4,590	9,980	0
Foreign exchange difference	(2)
Balance	38,656	14,834	$ 0
Investment in Public Listed Companies [Member]
Additions	47,192
Sale of investment in public listed companies	4,590
UEX Acquisition [Member]
Additions	$ 135	$ 5,781

Amount of adjustment to equity securities balance for consideration for business acquisition.

No definition available.

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- Definition

Amount of foreign exchange difference on equity securities.

+ References

No definition available.

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- Definition

Amount of increase in equity securities FV-NI due to anfield debt settlement.

+ References

No definition available.

+ Details

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- Definition

Amount of 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 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1)(b))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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-Section 45
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482736/825-10-45-1A

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Balance Type:	debit
Period Type:	instant

- 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
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(3)(d)(2))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483586/944-220-S99-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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-Publisher FASB
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- Definition

Amount of cash outflow to acquire investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as investing activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-19

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- Definition

Amount of cash inflow from sale of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as investing activity.

+ References

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- Details

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