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			5,021			5,021
Other comprehensive income (loss)				1,003		1,003
Cash dividends declared			(2,474)			(2,474)
Common stock issued under stock option plan					1	1
Common stock issued under dividend reinvestment plan	70	901				971
Balance at Sep. 30, 2012	4,489	35,599	62,827	(4,128)	(7,083)	91,704
Balance at Dec. 31, 2012	4,503	35,788	62,475	(4,050)	(7,082)	91,634
Net income			5,091			5,091
Other comprehensive income (loss)				(1,890)		(1,890)
Cash dividends declared			(2,103)			(2,103)
Treasury shares issued under stock option plans		(20)			72	52
Common stock issued under dividend reinvestment plan	37	545				582
Balance at Sep. 30, 2013	$ 4,540	$ 36,313	$ 65,463	$ (5,940)	$ (7,010)	$ 93,366