Consolidated Statements Of Changes In Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2014	$ 13,577	$ 20,905	$ 113,149	$ 6,691	$ (8,035)	$ 146,287
Net income			3,881			3,881
Total other comprehensive (loss) income				1,090		1,090
Dividend declared:
Common stock			(1,458)			(1,458)
Stock options exercised, including related tax effects		13			222	235
Recognition of stock based compensation expense		58				58
Balance at Mar. 31, 2015	13,577	20,976	115,572	7,781	(7,813)	150,093
Balance at Dec. 31, 2015	13,577	21,624	122,260	3,629	(6,938)	154,152
Net income			4,406			4,406
Total other comprehensive (loss) income				3,436		3,436
Dividend declared:
Common stock			(1,593)			(1,593)
Purchase of Treasury Stock					(190)	(190)
Stock options exercised, including related tax effects		19	(36)		170	153
Recognition of stock based compensation expense		230				230
Balance at Mar. 31, 2016	$ 13,577	$ 21,873	$ 125,037	$ 7,065	$ (6,958)	$ 160,594