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Investments - Equity Securities (Details) - Equity securities and warrants - USD ($) $ in Thousands	12 Months Ended
	Apr. 30, 2024	Apr. 30, 2023
Debt Securities, Available-for-Sale [Line Items]
Net loss recognized during the period on equity securities	$ (3,945)	$ (132)
Unrealized loss recognized during the period on equity securities still held at the reporting date	$ (3,945)	$ (132)

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/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(3)(d))
-Publisher FASB
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-Section 50
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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

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