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Composition Of Certain Financial Statement Captions (Schedule Of Accrued Liabilities) (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Sep. 30, 2022
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Composition Of Certain Financial Statement Captions [Abstract] |  |
Amounts payable to patent administration program partners | $ 78,142 | $ 63,106
Accrued compensation and benefits | 80,498 | 84,111
Accrued professional fees | 21,083 | 13,057
Unpaid property, plant, and equipment additions | 17,774 | 15,428
Accrued customer refunds | 3,856 | 3,674
Accrued market development funds | 11,279 | 7,206
Other accrued liabilities | 34,125 | 43,655
Total accrued liabilities | $ 246,757 | $ 230,237

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