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Goodwill And Other Intangible Assets (Schedule Of Intangible Assets With Determinable Useful Lives By Major Category) (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 142,300 $ 142,300
Accumulated Amortization (90,753) (80,616)
Net Carrying Amount 51,547 61,684
Trade Names    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 22,500 22,500
Accumulated Amortization (15,869) (13,935)
Net Carrying Amount 6,631 8,565
Technology and know-how    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 55,300 55,300
Accumulated Amortization (42,371) (38,486)
Net Carrying Amount 12,929 16,814
Customer-related intangibles    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 64,500 64,500
Accumulated Amortization (32,513) (28,195)
Net Carrying Amount $ 31,987 $ 36,305