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Investments in Affiliates (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Oct. 28, 2023
Oct. 29, 2022
Oct. 28, 2023
Oct. 29, 2022
Apr. 29, 2023
Schedule of Investments [Line Items]          
Equity method investments $ 9,819   $ 9,819   $ 11,934
Equity in income (loss) of affiliate (771) $ (811) (1,461) $ (1,701)  
Accounts payable 14   14    
Amount invested     2,899 2,882  
Purchase of convertible notes $ 11,663   11,663    
Convertible note and investment in affiliates, amount     $ 21,483 25,343  
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     $ 2,250    
Promissory Notes          
Schedule of Investments [Line Items]          
Amount invested     649    
Product Design and Development          
Schedule of Investments [Line Items]          
Related party transaction, amounts of transaction     $ 123 $ 672