Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Acquired Intangible Assets
Accumulated Amortization	$ 307,152	$ 293,289
Intangible Assets, Gross (Excluding Goodwill)	739,880	742,048
Intangible Assets, Net (Excluding Goodwill)	432,728	448,759
Tradenames
Acquired Intangible Assets
Indefinite-Lived Intangible Assets	7,432	7,600
Customer Relationships
Acquired Intangible Assets
Finite-Lived Intangible Assets, Gross	508,140	509,505
Accumulated Amortization	199,501	189,967
Net Balance	$ 308,639	$ 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	$ 114,459	$ 114,864
Accumulated Amortization	69,815	67,602
Net Balance	$ 44,644	$ 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	$ 99,136	$ 99,366
Accumulated Amortization	28,587	26,978
Net Balance	$ 70,549	$ 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	$ 10,104	$ 10,104
Accumulated Amortization	8,948	8,453
Net Balance	$ 1,156	$ 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	301	289
Net Balance	$ 308	$ 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