Securities - Amortized Cost And Approximate Fair Value Of Securities Available For Sale (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 89,861	$ 93,632
Gross Unrealized Gains	1,940	764
Gross Unrealized Losses	(171)	(620)
Fair Value	91,630	93,776
U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13,670	12,792
Gross Unrealized Gains	32	51
Gross Unrealized Losses	(49)	(55)
Fair Value	13,653	12,788
State And Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	32,698	37,771
Gross Unrealized Gains	1,341	507
Gross Unrealized Losses	(8)	(129)
Fair Value	34,031	38,149
U.S. Government-Sponsored Enterprises [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	41,493	43,069
Gross Unrealized Gains	567	206
Gross Unrealized Losses	(114)	(436)
Fair Value	41,946	$ 42,839
Corporate Debt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2,000
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Value	$ 2,000