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Investments (Details) - USD ($) $ in Thousands | Jul. 29, 2023 | Apr. 30, 2023
--- | --- | ---
Long-term investments: |  |
Equity Method Investments. | $ 18,623 | $ 18,644
Total long-term investments | 22,578 | 23,613
Investment in limited partnership fund |  |
Long-term investments: |  |
Equity Method Investments. | 18,623 | 18,644
Available-for-sale securities. |  |
Long-term investments: |  |
Total long-term investments | 3,955 | 4,969
Available-for-sale securities. | Equity securities and warrants |  |
Long-term investments: |  |
Total long-term investments | $ 3,955 | $ 4,969

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