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, 2012	$ 4,503	$ 35,788	$ 62,475	$ (4,050)	$ (7,082)	$ 91,634
Net income			6,232			6,232
Other comprehensive income (loss)				(646)		(646)
Cash dividends declared			(2,810)			(2,810)
Treasury shares issued under stock option plans		(20)			72	52
Common stock issued under dividend reinvestment plan	58	868				926
Balance at Dec. 31, 2013	4,561	36,636	65,897	(4,696)	(7,010)	95,388
Net income			8,402			8,402
Other comprehensive income (loss)				1,596		1,596
Cash dividends declared			(2,847)			(2,847)
Treasury shares issued under stock option plans		(9)			68	59
Common stock issued under dividend reinvestment plan	46	877				923
Balance at Dec. 31, 2014	4,607	37,504	71,452	(3,100)	(6,942)	103,521
Net income			10,204			10,204
Other comprehensive income (loss)				(622)		(622)
Cash dividends declared			(3,139)			(3,139)
Treasury shares issued under stock option plans		6			86	92
Common stock issued under dividend reinvestment plan	52	1,194				1,246
Stock option compensation expense		74				74
Balance at Dec. 31, 2015	$ 4,659	$ 38,778	$ 78,517	$ (3,722)	$ (6,856)	$ 111,376