Supplemental Cash Flow and Non-Cash Information (Schedule Of Supplemental Cash Flow and Non-Cash Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Supplemental cash flow information:
Income taxes paid, net	$ 11,025	$ 9,995	$ 38,807	$ 33,323
Interest paid	$ 6,500	$ 9,392	21,806	22,437
Property Plant and Equipment [Member]
Non-cash investing activities:
Unpaid purchases at the end of the period			3,088	17,477
Capitalized Purchased Software Costs [Member]
Non-cash investing activities:
Unpaid purchases at the end of the period			$ 1,320	$ 0