Consolidated Statements of Changes in Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2010	$ 4,317	$ 33,096	$ 57,984	$ (5,642)	$ (7,116)	$ 82,639
Comprehensive income:
Net income			3,608			3,608
Unrealized gain on securities, net of reclassification adjustments and taxes				1,343		1,343
Unrealized gain on hedging activities, net of reclassification adjustments and taxes				50		50
Cash dividends declared			(2,122)			(2,122)
Treasury shares issued under stock option plans		(2)			29	27
Treasury shares issued to dividend reinvestment plan	35	615				650
Balance at Jun. 30, 2011	4,352	33,709	59,470	(4,249)	(7,087)	86,195
Balance at Dec. 31, 2011	4,419	34,698	60,280	(5,131)	(7,084)	87,182
Comprehensive income:
Net income			3,275			3,275
Unrealized gain on securities, net of reclassification adjustments and taxes				316		316
Unrealized gain on hedging activities, net of reclassification adjustments and taxes				195		195
Cash dividends declared			(1,780)			(1,780)
Common stock issued to dividend reinvestment plan	53	687				740
Balance at Jun. 30, 2012	$ 4,472	$ 35,385	$ 61,775	$ (4,620)	$ (7,084)	$ 89,928