Borrowed Funds (Summary of Long-Term Borrowings) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Long-term FHLB advances	$ 747	$ 751
Long-term reverse repurchase agreements	45,000	45,000
Total	$ 45,747	$ 45,751