Goodwill And Other Intangible Assets (Schedule Of Carrying Values Of Indefinite Lived Intangible Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 253,995	$ 186,697
In Process R&D [Member]
Indefinite-lived Intangible Assets [Line Items]
Total indefinite lived intangible assets	2,283	2,190
Procurement Contracts And Agreements [Member]
Indefinite-lived Intangible Assets [Line Items]
Total indefinite lived intangible assets	2,013	2,013
Trademarks [Member]
Indefinite-lived Intangible Assets [Line Items]
Total indefinite lived intangible assets	$ 765	$ 844