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Derivatives (Fair Value Hedges included in Consolidated Balance Sheets) (Details) - Interest Rate Swap - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Derivatives, Fair Value [Line Items]    
Other Assets, Notional Amount of Interest Rate Swaps $ 84,977 $ 85,587
Other Assets, Fair Value of Interest Rate Swaps 1,377 1,713
Other Liabilities, Notional Amount of Interest Rate Swap 84,977 85,587
Other Liabilities, Fair Value of Interest Rate Swap $ 1,471 $ 1,734