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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, 2023
Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 142,300 $ 142,300
Accumulated Amortization (99,927) (90,753)
Net Carrying Amount 42,373 51,547
Trade Names    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 22,500 22,500
Accumulated Amortization (17,379) (15,869)
Net Carrying Amount 5,121 6,631
Technology and know-how    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 55,300 55,300
Accumulated Amortization (45,746) (42,371)
Net Carrying Amount 9,554 12,929
Customer-related intangibles    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount 64,500 64,500
Accumulated Amortization (36,802) (32,513)
Net Carrying Amount $ 27,698 $ 31,987