CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (UNAUDITED) (USD $) In Thousands	Common stock [Member]	Surplus [Member]	Retained earnings [Member]	Treasury stock [Member]	Accumulated other comprehensive loss, net of tax [Member]	Total
Balance at Dec. 31, 2013	$ 34,348	$ 43,280	$ 102,273	$ (5,414)	$ (7,289)
Net income			3,720			3,720
Dividend reinvestment	0	0
Stock options exercised	0	0
Stock-based compensation	0	165
Other comprehensive income					3,088	6,808
Cash dividend on common stock ($0.06 per share in 2015)			0
Balance at Mar. 31, 2014	34,348	43,445	105,993	(5,414)	(4,201)	174,171
Balance at Dec. 31, 2014	34,591	44,230	116,169	(5,414)	(6,843)	182,733
Net income			4,009			4,009
Dividend reinvestment	18	143
Stock options exercised	3	16
Stock-based compensation	116	106
Other comprehensive income					1,116	5,125
Cash dividend on common stock ($0.06 per share in 2015)			(700)
Balance at Mar. 31, 2015	$ 34,728	$ 44,495	$ 119,478	$ (5,414)	$ (5,727)	$ 187,560