Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Jun. 30, 2023	Dec. 31, 2022
Acquired Intangible Assets
Accumulated Amortization	$ 281,839		$ 255,723
Intangible Assets, Gross (Excluding Goodwill)	744,251		759,043
Intangible Assets, Net (Excluding Goodwill)	462,412		503,320
Tradenames
Acquired Intangible Assets
Indefinite-Lived Intangible Assets	7,600		7,600
Customer Relationships
Acquired Intangible Assets
Finite-Lived Intangible Assets, Gross	508,625		520,273
Accumulated Amortization	180,810		163,562
Net Balance	$ 327,815		356,711
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	$ 118,914		121,167
Accumulated Amortization	67,164		62,841
Net Balance	$ 51,750		58,326
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	$ 98,169		97,810
Accumulated Amortization	25,503		21,380
Net Balance	$ 72,666		76,430
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	$ 10,334		11,584
Accumulated Amortization	8,085		7,698
Net Balance	$ 2,249		3,886
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	277		242
Net Balance	$ 332		$ 367
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