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Intangibles (Net of Amortization) and Goodwill (Schedule Of Information Related To Intangible Assets and Goodwill (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]    
Amortizing intangible assets, Accumulated Amortization $ 10,877 $ 9,810
Goodwill, Gross Carrying Amount 123,560 123,922
Amortizing intangible assets and Goodwill, Gross Carrying Amount 137,200 137,562
Formulas And Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizing intangible assets, Gross Carrying Amount 6,200 6,200
Amortizing intangible assets, Accumulated Amortization 5,425 4,650
Contracts [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizing intangible assets, Gross Carrying Amount 2,000 2,000
Amortizing intangible assets, Accumulated Amortization 1,150 1,000
Customer Bases [Member]    
Finite-Lived Intangible Assets [Line Items]    
Amortizing intangible assets, Gross Carrying Amount 5,440 5,440
Amortizing intangible assets, Accumulated Amortization $ 4,302 $ 4,160