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Investments in Affiliates (Details Textual) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Jan. 27, 2024 | Jan. 28, 2023 | Jan. 27, 2024 | Jan. 28, 2023 | Apr. 29, 2023
Schedule of Investments [Line Items] |  |  |  |  |
Equity method investments | $ 8,513 |  | $ 8,513 |  | $ 11,934
Equity in loss of affiliates | 869 | $ 895 | 2,330 | $ 2,596 |
Accounts payable | 2 |  | 2 |  |
Amount invested |  |  | 4,084 | 3,240 |
Purchase of convertible notes | $ 13,134 |  | 13,134 |  |
Convertible note and investment in affiliates, amount |  |  | $ 21,647 | 24,836 |
Miortech |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Ownership percentage | 55.90% |  | 55.90% |  |
XdisplayTM |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Ownership percentage | 16.40% |  | 16.40% |  |
Convertible note |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Amount invested |  |  | $ 3,000 |  |
Promissory Notes |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Amount invested |  |  | 1,084 |  |
Product Design and Development |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |
Related party transaction, amounts of transaction |  |  | $ 162 | $ 672 |

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