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Derivatives (Derivative Instruments Consolidated Statement) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Interest Rate Swaps | Other Income |  |  |
Derivative [Line Items] |  |  |
Included in Other Income | $ 48 | $ 478 | $ 1,207

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