Supplemental Cash Flow and Non-Cash Information (Schedule Of Supplemental Cash Flow and Non-Cash Information) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Supplemental Cash Flow Information [Abstract]
Income taxes paid, net	$ 9,373	$ 7,768	$ 12,851	$ 9,373
Interest paid	$ 1,981	$ 1,992	3,543	4,082
Non-cash investing activity:
Additions to property, plant and equipment in accounts payable			$ 14,364	$ 8,902