Goodwill and Other Intangible Assets (Schedule Of Goodwill) (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Dec. 31, 2022	Jun. 30, 2020	Dec. 31, 2022	Dec. 31, 2021
Goodwill [Roll Forward]
Beginning balance			$ 709,344	$ 686,407
Goodwill written off related to spin-off of a business unit				(476)
Additions				33,214
Purchase accounting adjustments			(2,834)
Impairment charge	$ (40,700)	$ (25,100)	(40,717)
Amortization of "second component" goodwill			(1,344)	(1,344)
Foreign currency translation			(21,030)	(8,457)
Ending balance	643,419		643,419	709,344
Domestic Operations
Goodwill [Roll Forward]
Beginning balance			353,470	333,502
Goodwill written off related to spin-off of a business unit				0
Additions				21,312
Purchase accounting adjustments			(2,834)
Impairment charge			0
Amortization of "second component" goodwill			(1,344)	(1,344)
Foreign currency translation			0	0
Ending balance	349,292		349,292	353,470
International and Other
Goodwill [Roll Forward]
Beginning balance			355,874	352,905
Goodwill written off related to spin-off of a business unit				(476)
Additions				11,902
Purchase accounting adjustments			0
Impairment charge			(40,717)
Amortization of "second component" goodwill			0	0
Foreign currency translation			(21,030)	(8,457)
Ending balance	$ 294,127		$ 294,127	$ 355,874