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Investments (Details) - USD ($) $ in Thousands | Jul. 27, 2024 | Apr. 30, 2024
--- | --- | ---
Long-term investments: |  |
Total long-term available-for-sale securities investments | $ 706 | $ 1,027
Equity Method Investments. | 21,181 | 19,933
Total long-term investments | 21,887 | 20,960
Equity securities and warrants |  |
Long-term investments: |  |
Total long-term investments | $ 706 | $ 1,027
Investment, Type [Extensible Enumeration] | us-gaap:DebtSecuritiesMember | us-gaap:DebtSecuritiesMember
Investment in limited partnership fund |  |
Long-term investments: |  |
Equity Method Investments. | $ 21,181 | $ 19,933

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