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Hedge Accounting (Summary Of Hedged Transactions That Affect Earnings) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items] |  |
Loss Recognized in OCI on Derivatives (Effective Portion) | $ (267) |
Loss Reclassified from OCI into Income (Effective Portion) | 202 |
Designated as Hedging Instrument [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Loss Recognized in OCI on Derivatives (Effective Portion) | 267 | $ 182
Loss Reclassified from OCI into Income (Effective Portion) | 202 | 68
Designated as Hedging Instrument [Member] | Interest Expense [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Loss Reclassified from OCI into Income (Effective Portion) | 202 | 68
Designated as Hedging Instrument [Member] | Interest Rate Contracts [Member] |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Loss Recognized in OCI on Derivatives (Effective Portion) | $ 267 | $ 182

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