CONDENSED CONSOLIDATED STATEMENTS OF 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, 2011	$ 34,330	$ 24,010	$ 91,303	$ (10,013)	$ (3,070)
Stock options exercised	0	0
Net (loss) income			5,368			5,368
Stock-based compensation		91				91
Other comprehensive loss					(2,915)	2,453
Balance at Jun. 30, 2012	34,330	24,101	96,671	(10,013)	(5,985)	139,104
Balance at Dec. 31, 2012	34,330	42,628	89,555	(5,414)	2,886	163,985
Stock options exercised	17	73
Net (loss) income			5,478			5,478
Stock-based compensation		198				198
Other comprehensive loss					(10,719)	(5,241)
Balance at Jun. 30, 2013	$ 34,347	$ 42,899	$ 95,033	$ (5,414)	$ (7,833)	$ 159,032