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Goodwill And Other Intangible Assets (Schedule Of Intangible Assets With Determinable Useful Lives By Major Category) (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Intangible Assets    
Gross Carrying Amount $ 142,300 $ 142,300
Accumulated Amortization (88,312) (80,616)
Net Carrying Amount 53,988 61,684
Trade Names    
Intangible Assets    
Gross Carrying Amount 22,500 22,500
Accumulated Amortization (15,396) (13,935)
Net Carrying Amount 7,104 8,565
Technology Know-How    
Intangible Assets    
Gross Carrying Amount 55,300 55,300
Accumulated Amortization (41,479) (38,486)
Net Carrying Amount 13,821 16,814
Customer-Related Intangible Assets    
Intangible Assets    
Gross Carrying Amount 64,500 64,500
Accumulated Amortization (31,437) (28,195)
Net Carrying Amount $ 33,063 $ 36,305