Interest-Bearing Deposits (Schedule of Interest-bearing Deposits) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Interest-Bearing Deposits [Abstract]
Interest-bearing demand deposits	$ 332,881	$ 322,091
Savings deposits	11,168	29,430
Time deposits:
Less than $100	2,658	3,523
$100 to less than $250	33,385	37,179
$250 or more	16,455	15,082
Total	$ 396,547	$ 407,305
Weighted average interest rate	0.56%	0.48%