Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Preferred Stock [Member]	Common Stock [Member]	Treasury Stock [Member]	Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Total
Balance at Dec. 31, 2014	$ 13,000	$ 2,931	$ (2,301)	$ 34,745	$ 17,132	$ (1,599)	$ 63,908
Net income					5,138		5,138
Other comprehensive loss						(386)	(386)
Redemption of preferred stock	$ (13,000)						(13,000)
Restricted stock compensation expense		19		323			342
Exercise of stock options		16		386			402
Taxes on stock option exercise and share award vest		(11)		(458)			(469)
Cash dividends - common					(784)		(784)
Cash dividends SBLF preferred					(50)		(50)
Sale of treasury shares to 401(k)			192	68			260
Sale of treasury shares to deferred comp. plan			94	33			127
Balance at Dec. 31, 2015		2,955	(2,015)	35,097	21,436	(1,985)	55,488
Net income					4,979		4,979
Other comprehensive loss						(289)	(289)
ERB acquisition		1,369		33,337			34,706
Restricted stock compensation expense		42		898			940
Exercise of stock options		6		(6)
Taxes on stock option exercise and share award vest		(21)		(680)			(701)
Tax benefit for restricted stock vest and stock option exercise				188			188
Cash dividends - common					(895)		(895)
Sale of treasury shares to 401(k)			178	87			265
Sale of treasury shares to deferred comp. plan			107	52			159
Balance at Dec. 31, 2016		$ 4,351	$ (1,730)	$ 68,973	$ 25,520	$ (2,274)	$ 94,840