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Composition Of Certain Financial Statement Captions (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Thousands | Dec. 29, 2023 | Sep. 29, 2023
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Composition Of Certain Financial Statement Captions [Abstract] |  |
Amounts payable to patent administration program partners | $ 171,639 | $ 150,509
Accrued compensation and benefits | 79,384 | 118,728
Accrued professional fees | 17,131 | 18,632
Unpaid property, plant, and equipment additions | 18,116 | 18,002
Accrued customer refunds | 3,479 | 3,878
Accrued market development funds | 4,436 | 5,010
Other accrued liabilities | 33,001 | 36,640
Total accrued liabilities | $ 327,186 | $ 351,399

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