Quarterly report [Sections 13 or 15(d)]

Note 3 - Licensing Agreements (Details Textual)

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Note 3 - Licensing Agreements (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Sep. 27, 2026
Sep. 28, 2025
Sep. 27, 2026
Sep. 28, 2025
Cost of Product and Service Sold $ 12,945 $ 17,124 $ 21,680 $ 29,084
Royalty [Member]        
Cost of Product and Service Sold $ 1,700 $ 1,900 $ 3,000 $ 2,900