Acquisitions, Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023
Acquired Intangible Assets
Accumulated Amortization	$ 321,207		$ 293,289
Intangible Assets, Gross (Excluding Goodwill)	742,920		742,048
Intangible Assets, Net (Excluding Goodwill)	421,713		448,759
Tradenames
Acquired Intangible Assets
Indefinite-Lived Intangible Assets	7,432		7,600
Customer Relationships
Acquired Intangible Assets
Finite-Lived Intangible Assets, Gross	510,698		509,505
Accumulated Amortization	209,210		189,967
Net Balance	$ 301,488		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	$ 114,939		114,864
Accumulated Amortization	72,039		67,602
Net Balance	$ 42,900		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	$ 98,938		99,366
Accumulated Amortization	30,195		26,978
Net Balance	$ 68,743		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	$ 10,304		10,104
Accumulated Amortization	9,450		8,453
Net Balance	$ 854		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	313		289
Net Balance	$ 296		$ 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