Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Acquired Intangible Assets
Accumulated Amortization	$ 269,446	$ 255,723
Intangible Assets, Gross (Excluding Goodwill)	760,861	759,043
Intangible Assets, Net (Excluding Goodwill)	491,415	503,320
Tradenames
Acquired Intangible Assets
Indefinite-Lived Intangible Assets	7,600	7,600
Customer Relationships
Acquired Intangible Assets
Finite-Lived Intangible Assets, Gross	521,288	520,273
Accumulated Amortization	173,070	163,562
Net Balance	$ 348,218	$ 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	$ 121,674	$ 121,167
Accumulated Amortization	65,254	62,841
Net Balance	$ 56,420	$ 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	$ 98,206	$ 97,810
Accumulated Amortization	22,705	21,380
Net Balance	$ 75,501	$ 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	8,164	7,698
Net Balance	$ 3,320	$ 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	253	242
Net Balance	$ 356	$ 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