Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Acquired Intangible Assets
Accumulated Amortization	$ 345,405	$ 337,935
Intangible Assets, Gross (Excluding Goodwill)	738,960	729,953
Intangible Assets, Net (Excluding Goodwill)	393,555	392,018
Tradenames
Acquired Intangible Assets
Indefinite-Lived Intangible Assets	7,432	7,432
Customer Relationships
Acquired Intangible Assets
Finite-Lived Intangible Assets, Gross	518,072	508,945
Accumulated Amortization	237,189	228,332
Net Balance	$ 280,883	$ 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	$ 110,127	$ 111,934
Accumulated Amortization	72,183	74,010
Net Balance	$ 37,944	$ 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	$ 97,566	$ 95,879
Accumulated Amortization	30,895	30,524
Net Balance	$ 66,671	$ 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	$ 5,154	$ 5,154
Accumulated Amortization	4,793	4,732
Net Balance	$ 361	$ 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	345	337
Net Balance	$ 264	$ 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