Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Acquired Intangible Assets
Accumulated Amortization	$ 280,997		$ 255,723
Intangible Assets, Gross (Excluding Goodwill)	758,304		759,043
Intangible Assets, Net (Excluding Goodwill)	477,307		503,320
Tradenames
Acquired Intangible Assets
Indefinite-Lived Intangible Assets	7,600		7,600
Customer Relationships
Acquired Intangible Assets
Finite-Lived Intangible Assets, Gross	517,588		520,273
Accumulated Amortization	180,257		163,562
Net Balance	$ 337,331		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	$ 122,373		121,167
Accumulated Amortization	67,697		62,841
Net Balance	$ 54,676		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	$ 98,650		97,810
Accumulated Amortization	24,050		21,380
Net Balance	$ 74,600		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	$ 11,484		11,584
Accumulated Amortization	8,728		7,698
Net Balance	$ 2,756		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	265		242
Net Balance	$ 344		$ 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