Derivatives (Derivative Instruments and Hedging Activities) (Details) - Interest Rate Swaps - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Included in Other Assets:
Interest Rate Swaps, Notional Amount	$ 85,600	$ 87,800
Other Assets
Included in Other Assets:
Interest Rate Swaps, Notional Amount	85,587	87,788
Interest Rate Swaps, Fair Value	1,713	1,564
Other Liabilities
Included in Other Liabilities:
Interest Rate Swaps, Notional Amount	85,587	87,788
Interest Rate Swaps, Fair Value	$ 1,734	$ 1,633