Securities (Securities With Unrealized Losses) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	$ 7,363	$ 6,947
Less than Twelve Months, Unrealized Loss	114	51
Twelve Months or More, Fair Value	3,957	4,470
Twelve Months or More, Unrealized Loss	40	31
Total, Fair Value	11,320	11,417
Total, Unrealized Loss	154	82
U.S. Treasury [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than Twelve Months, Fair Value	7,363	6,947
Less than Twelve Months, Unrealized Loss	114	51
Twelve Months or More, Fair Value	3,957	4,470
Twelve Months or More, Unrealized Loss	40	31
Total, Fair Value	11,320	11,417
Total, Unrealized Loss	$ 154	$ 82