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Borrowed Funds (Short-term borrowings) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Securities Sold under Agreements to Repurchase [Member]        
Short-term Debt [Line Items]        
Maximum Month End Balance $ 26,761 $ 34,242 $ 37,441 $ 38,967
Average Balance $ 26,569 $ 32,957 $ 30,755 $ 34,467
Weighted Average Interest Rate During the Period 0.09% 0.09% 0.04% 0.09%
Federal Funds Purchased [Member]        
Short-term Debt [Line Items]        
Maximum Month End Balance $ 7,070 $ 16,200 $ 7,070 $ 16,200
Average Balance $ 1,982 $ 9,199 $ 1,224 $ 6,843
Weighted Average Interest Rate During the Period 2.65% 1.82% 1.71% 1.77%