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Investments in Affiliates (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Jan. 25, 2025
Jan. 27, 2024
Jan. 25, 2025
Jan. 27, 2024
Apr. 27, 2024
Schedule of Investments [Line Items]          
Equity method investments $ 0   $ 0   $ 1,813
Income (loss) from equity method investments (762) $ (869) (2,594) $ (2,330)  
Reduction of equity method investment   505   781  
Equity method investment, other-than-temporary impairment 0 437 0 1,091  
Accounts payable 109 $ 2 109 2  
Amount invested     3,326 4,084  
Advances to affiliate 18,057   18,057   14,241
Purchase of convertible notes $ 17,276   17,276   14,241
Convertible note and investment in affiliates, amount     $ 17,276   16,054
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         5,050
Payment equity, foreign currency translation adjustments       97  
Interest Payable $ 587   $ 587   $ 449
Product Design and Development          
Schedule of Investments [Line Items]          
Related party transaction, amounts of transaction     $ 593 $ 162