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Derivative Instruments (Schedule Of Mortgage Banking Derivatives) (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Derivatives, Fair Value [Line Items] |  |  |
Fair value, Derivative assets | $ 4,233 | $ 538 | $ 1,944
Fair value, Derivative liabilities | (4,233) | (538) | (1,944)
Interest Rate Commitments [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional Amount, Assets | 3,940 | 50,312 | 1,048,613
Fair value, Derivative assets |  | 555 | 18,100
TBA Mortgage-Back Securities [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional Amount, Assets |  | 53,250 | 506,750
Fair value, Derivative assets | 0 | 53,250 | 506,750
Fair value, Derivative liabilities | $ 0 | $ (73) | $ (2,690)

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