Securities - Temporarily Impaired Gross Unrealized Losses And Fair Value Of Available-For-Sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Less Than Twelve Months, Fair Value	$ 17,131	$ 43,553
Less Than Twelve Months, Gross Unrealized Losses	(131)	(566)
Twelve Months or More, Fair Value	3,094	5,471
Twelve Months or More, Gross Unrealized Losses	(40)	(54)
Total, Fair Value	20,225	49,024
Total, Gross Unrealized Losses	(171)	(620)
U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Less Than Twelve Months, Fair Value	2,129	5,888
Less Than Twelve Months, Gross Unrealized Losses	(16)	(23)
Twelve Months or More, Fair Value	2,229	2,473
Twelve Months or More, Gross Unrealized Losses	(33)	(32)
Total, Fair Value	4,358	8,361
Total, Gross Unrealized Losses	(49)	(55)
State And Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Less Than Twelve Months, Fair Value	597	5,780
Less Than Twelve Months, Gross Unrealized Losses	(8)	(107)
Twelve Months or More, Fair Value	0	2,998
Twelve Months or More, Gross Unrealized Losses	0	(22)
Total, Fair Value	597	8,778
Total, Gross Unrealized Losses	(8)	(129)
U.S. Government-Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Less Than Twelve Months, Fair Value	14,405	31,885
Less Than Twelve Months, Gross Unrealized Losses	(107)	(436)
Twelve Months or More, Fair Value	865	0
Twelve Months or More, Gross Unrealized Losses	(7)	0
Total, Fair Value	15,270	31,885
Total, Gross Unrealized Losses	$ (114)	$ (436)