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Derivative Instruments (Schedule Of Mortgage Banking Derivatives) (Details) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Derivatives, Fair Value [Line Items]    
Fair value, Derivative assets $ 853 $ 1,944
Fair value, Derivative liabilities (853) (1,944)
Interest Rate Commitments [Member]    
Derivatives, Fair Value [Line Items]    
Notional Amount, Assets 401,292 1,048,613
Fair value, Derivative assets 4,071 18,100
TBA Mortgage-Back Securities [Member]    
Derivatives, Fair Value [Line Items]    
Notional Amount, Assets 246,750 506,750
Fair value, Derivative liabilities $ (288) $ (2,690)