Other Real Estate Owned ("OREO") (Foreclosed Real Estate Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Other Real Estate Owned ("OREO") [Abstract]
Balance at beginning of year	$ 7,763	$ 9,449	$ 5,883
Additions of underlying property	3,634	3,120	5,436
Disposals of underlying property	(1,456)	(3,860)	(1,206)
Transfers of OREO to loans		(372)
Valuation allowance	(600)	(574)	(664)
Balance at end of period	$ 9,341	$ 7,763	$ 9,449