Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Acquired Intangible Assets
Accumulated Amortization	$ 214,750	$ 202,675
Intangible Assets, Gross (Excluding Goodwill)	753,754	722,632
Intangible Assets, Net (Excluding Goodwill)	539,004	519,957
Tradenames
Acquired Intangible Assets
Indefinite-Lived Intangible Assets	7,600	7,600
Purchased research and development
Acquired Intangible Assets
Indefinite-Lived Intangible Assets	4,687	4,687
Customer Relationships
Acquired Intangible Assets
Finite-Lived Intangible Assets, Gross	501,482	487,853
Accumulated Amortization	136,343	127,048
Net Balance	$ 365,139	$ 360,805
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	17 years	17 years
Patents
Acquired Intangible Assets
Finite-Lived Intangible Assets, Gross	$ 131,232	$ 116,725
Accumulated Amortization	55,461	53,479
Net Balance	$ 75,771	$ 63,246
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	$ 96,980	$ 93,994
Accumulated Amortization	16,732	16,497
Net Balance	$ 80,248	$ 77,497
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	$ 11,464	$ 11,464
Accumulated Amortization	5,997	5,439
Net Balance	$ 5,467	$ 6,025
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	$ 309	$ 309
Accumulated Amortization	217	212
Net Balance	$ 92	$ 97
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