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Derivative Instruments (Schedule Of Mortgage Banking Derivatives) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Derivatives, Fair Value [Line Items] |  |  |
Fair value, Derivative assets | $ 538 | $ 1,944 | $ 12
Fair value, Derivative liabilities | (538) | (1,944) | (12)
Interest Rate Commitments [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional Amount, Assets | 50,312 | 1,048,613 | 297,454
Fair value, Derivative assets | 555 | 18,100 | 3,104
TBA Mortgage-Back Securities [Member] |  |  |
Derivatives, Fair Value [Line Items] |  |  |
Notional Amount, Assets | 53,250 | 506,750 | 225,500
Fair value, Derivative assets | 53,250 | 506,750 | 225,500
Fair value, Derivative liabilities | $ (73) | $ (2,690) | $ (350)

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