Borrowed Funds (Summary of Long-Term Borrowings) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
Debt Disclosure [Abstract]
Long-term FHLB advances	$ 755	$ 767	$ 792
Long-term reverse repurchase agreements	45,000	45,000	72,000
Term loans	0	903	1,354
Total	$ 45,755	$ 46,670	$ 74,146