Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2011	$ 4,419	$ 34,698	$ 60,280	$ (5,131)	$ (7,084)	$ 87,182
Net income			1,369			1,369
Other comprehensive income (loss)				312		312
Cash dividends declared			(1,090)			(1,090)
Common stock issued under dividend reinvestment plan	34	455				489
Balance at Mar. 31, 2012	4,453	35,153	60,559	(4,819)	(7,084)	88,262
Balance at Dec. 31, 2012	4,503	35,788	62,475	(4,050)	(7,082)	91,634
Net income			1,551			1,551
Other comprehensive income (loss)				237		237
Cash dividends declared			(698)			(698)
Treasury shares issued under stock option plans		(1)			4	3
Common stock issued under dividend reinvestment plan	13	180				193
Balance at Mar. 31, 2013	$ 4,516	$ 35,967	$ 63,328	$ (3,813)	$ (7,078)	$ 92,920