Borrowed Funds (Short-term borrowings) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Securities Sold under Agreements to Repurchase [Member]
Short-term Debt [Line Items]
Maximum Month End Balance	$ 63,133	$ 58,464
Quarter to Date Average Balance	$ 38,036	$ 55,206
Weighted Average Interest Rate During the Period	0.10%	0.13%
Federal Funds Purchased [Member]
Short-term Debt [Line Items]
Maximum Month End Balance	$ 16,200	$ 5,965
Quarter to Date Average Balance	$ 3,741	$ 2,726
Weighted Average Interest Rate During the Period	1.78%	1.15%
Federal Reserve Bank Advances [Member]
Short-term Debt [Line Items]
Maximum Month End Balance	$ 0	$ 0
Quarter to Date Average Balance	$ 0	$ 43
Weighted Average Interest Rate During the Period	0.00%	1.54%