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Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Jun. 30, 2025 | Dec. 31, 2024
--- | --- | --- | ---
Acquired Intangible Assets |  |  |
Accumulated Amortization | $ 354,331 |  | $ 337,935
Intangible Assets, Gross (Excluding Goodwill) | 764,727 |  | 729,953
Intangible Assets, Net (Excluding Goodwill) | 410,396 |  | 392,018
Tradenames |  |  |
Acquired Intangible Assets |  |  |
Indefinite-Lived Intangible Assets | 7,432 |  | 7,432
Customer relationships |  |  |
Acquired Intangible Assets |  |  |
Finite-Lived Intangible Assets, Gross | 550,508 |  | 508,945
Accumulated Amortization | 256,922 |  | 228,332
Net Balance | $ 293,586 |  | 280,613
Customer relationships | Minimum |  |  |
Acquired Intangible Assets |  |  |
Estimated Useful Life in Years | 6 years | 6 years |
Customer relationships | Maximum |  |  |
Acquired Intangible Assets |  |  |
Estimated Useful Life in Years | 20 years | 20 years |
Patents |  |  |
Acquired Intangible Assets |  |  |
Finite-Lived Intangible Assets, Gross | $ 94,035 |  | 111,934
Accumulated Amortization | 58,139 |  | 74,010
Net Balance | $ 35,896 |  | 37,924
Patents | Minimum |  |  |
Acquired Intangible Assets |  |  |
Estimated Useful Life in Years | 3 years | 3 years |
Patents | Maximum |  |  |
Acquired Intangible Assets |  |  |
Estimated Useful Life in Years | 20 years | 20 years |
Tradenames |  |  |
Acquired Intangible Assets |  |  |
Finite-Lived Intangible Assets, Gross | $ 107,269 |  | 95,879
Accumulated Amortization | 34,270 |  | 30,524
Net Balance | $ 72,999 |  | 65,355
Tradenames | Minimum |  |  |
Acquired Intangible Assets |  |  |
Estimated Useful Life in Years | 3 years | 3 years |
Tradenames | Maximum |  |  |
Acquired Intangible Assets |  |  |
Estimated Useful Life in Years | 20 years | 20 years |
Non-compete Agreements |  |  |
Acquired Intangible Assets |  |  |
Finite-Lived Intangible Assets, Gross | $ 4,874 |  | 5,154
Accumulated Amortization | 4,638 |  | 4,732
Net Balance | $ 236 |  | 422
Non-compete Agreements | Minimum |  |  |
Acquired Intangible Assets |  |  |
Estimated Useful Life in Years | 3 years | 3 years |
Non-compete Agreements | Maximum |  |  |
Acquired Intangible Assets |  |  |
Estimated Useful Life in Years | 6 years | 6 years |
Other |  |  |
Acquired Intangible Assets |  |  |
Finite-Lived Intangible Assets, Gross | $ 609 |  | 609
Accumulated Amortization | 362 |  | 337
Net Balance | $ 247 |  | $ 272
Other | Minimum |  |  |
Acquired Intangible Assets |  |  |
Estimated Useful Life in Years | 2 years | 2 years |
Other | Maximum |  |  |
Acquired Intangible Assets |  |  |
Estimated Useful Life in Years | 12 years | 12 years |

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