Securities (Schedule of Securities in a Gross Unrealized Loss Position) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Securities with unrealized loss position
Less than 12 Months, Fair Value	$ 17,863	$ 40,897
Less than 12 Months, Unrealized Losses	151	613
More than 12 Months, Fair Value	18,240	8,947
More than 12 Months, Unrealized Losses	308	265
Total, Fair Value	36,103	49,844
Total, Unrealized Losses	459	878
Mortgage-backed securities of government sponsored entities [Member]
Securities with unrealized loss position
Less than 12 Months, Fair Value	14,503	32,810
Less than 12 Months, Unrealized Losses	111	409
More than 12 Months, Fair Value	15,777	7,978
More than 12 Months, Unrealized Losses	236	173
Total, Fair Value	30,280	40,788
Total, Unrealized Losses	347	582
Private-label collateralized mortgage obligations [Member]
Securities with unrealized loss position
Less than 12 Months, Fair Value
Less than 12 Months, Unrealized Losses
More than 12 Months, Fair Value		40
More than 12 Months, Unrealized Losses		1
Total, Fair Value		40
Total, Unrealized Losses		1
State and political subdivisions [Member]
Securities with unrealized loss position
Less than 12 Months, Fair Value	3,360	8,087
Less than 12 Months, Unrealized Losses	40	204
More than 12 Months, Fair Value	2,463	929
More than 12 Months, Unrealized Losses	72	91
Total, Fair Value	5,823	9,016
Total, Unrealized Losses	$ 112	$ 295