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Derivative Financial Instruments (Gains (Losses) Recognized on Derivatives (Cash Flow Hedges)) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Trading Activity, Gains and Losses, Net [Line Items]      
Effective Portion, Recognized in OCI, Amount of Gain (Loss) $ (3,639) $ 816 $ 210
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax 170 431 $ 1,290
Interest Rate Swap      
Trading Activity, Gains and Losses, Net [Line Items]      
Effective Portion, Recognized in OCI, Amount of Gain (Loss) (3,442) 995  
Interest Expense | Interest Rate Swap      
Trading Activity, Gains and Losses, Net [Line Items]      
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, before Tax $ 197 179  
Other Income | Interest Rate Swap      
Trading Activity, Gains and Losses, Net [Line Items]      
Ineffective Portion, Recognized in Income on Derivatives, Amount of Gain (Loss)   $ 0