Other Real Estate Owned ("OREO") (Foreclosed Real Estate Expenses) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017
Other Real Estate Owned ("OREO") [Abstract]
Valuation allowance	$ 193	$ 117	$ 283	$ 313	$ 600
Operating expenses	36	28	60	27
Expenses applicable to OREO assets	$ 229	$ 145	$ 343	$ 340