FHLB Advances and Other Borrowings (Schedule of Additional Collateral) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Advances from Federal Home Loan Banks [Abstract]
Average Daily Balance During the Year	$ 40,476	$ 33,317
Average Interest Rate During the Year	0.47%	0.39%
Maximum Month-end Balance During the Year	$ 47,934	$ 45,313
Weighted Average Interest Rate at Year-end	0.50%	0.50%