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Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Jun. 30, 2024
Dec. 31, 2023
Acquired Intangible Assets      
Accumulated Amortization $ 328,852   $ 293,289
Intangible Assets, Gross (Excluding Goodwill) 741,670   742,048
Intangible Assets, Net (Excluding Goodwill) 412,818   448,759
Tradenames      
Acquired Intangible Assets      
Indefinite-Lived Intangible Assets 7,432   7,600
Customer Relationships      
Acquired Intangible Assets      
Finite-Lived Intangible Assets, Gross 513,628   509,505
Accumulated Amortization 218,930   189,967
Net Balance $ 294,698   319,538
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 $ 114,248   114,864
Accumulated Amortization 72,384   67,602
Net Balance $ 41,864   47,262
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 $ 99,849   99,366
Accumulated Amortization 31,796   26,978
Net Balance $ 68,053   72,388
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 $ 5,904   10,104
Accumulated Amortization 5,417   8,453
Net Balance $ 487   1,651
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 325   289
Net Balance $ 284   $ 320
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