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, 2014	$ 4,607	$ 37,504	$ 71,452	$ (3,100)	$ (6,942)	$ 103,521
Net income			5,358			5,358
Other comprehensive income				(700)		(700)
Cash dividends declared			(1,522)			(1,522)
Treasury shares issued under employer stock option/purchase plans		5			81	86
Common stock issued under dividend reinvestment plan	18	417				435
Balance at Jun. 30, 2015	4,625	37,926	75,288	(3,800)	(6,861)	107,178
Balance at Dec. 31, 2015	4,659	38,778	78,517	(3,722)	(6,856)	111,376
Net income			4,288			4,288
Other comprehensive income				1,366		1,366
Cash dividends declared			(1,715)			(1,715)
Acquisition of 15,521 shares of treasury stock					(350)	(350)
Treasury shares issued under employer stock option/purchase plans		1			278	279
Treasury shares issued under dividend reinvestment plan		82			3	85
Common stock issued under dividend reinvestment plan	25	527				552
Common stock issued under incentive stock option plan	1	8				9
Stock option compensation expense		58				58
Balance at Jun. 30, 2016	$ 4,685	$ 39,454	$ 81,090	$ (2,356)	$ (6,925)	$ 115,948