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Derivative Financial Instruments (Summary Of Location And Amounts Of Derivative Fair Values In The Consolidated Balance Sheets) (Details) - Non-hedging derivatives - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Derivative [Line Items]    
Derivatives $ 581 $ 162
Option contracts | Other liabilities    
Derivative [Line Items]    
Derivatives $ 581 $ 162