Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (USD $) In Thousands	Common Stock [Member]	Capital Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total [Member]	Total
Balance at Dec. 31, 2011	$ 35,225	$ 270,869	$ 15,523	$ (14,216)	$ (86,580)	$ 220,821
Net changes during the period						4,503
Surrender of shares issued under stock incentive plan					(75)
Other comprehensive income, net of tax				2,655			2,655
Net income			4,602				4,602
Cash dividends paid - common shares			(2,782)
Stock option compensation and restricted stock expense		103
Balance at Mar. 31, 2012	35,225	270,972	17,343	(11,561)	(86,655)	225,324
Balance at Dec. 31, 2012	35,264	271,565	24,407	(16,491)	(86,655)	228,090	228,090
Net changes during the period						3,902
Other comprehensive income, net of tax				1,357			1,357
Net income			5,244				5,244
Cash dividends paid - common shares			(2,785)
Stock option compensation and restricted stock expense		86
Balance at Mar. 31, 2013	$ 35,264	$ 271,651	$ 26,866	$ (15,134)	$ (86,655)	$ 231,992	$ 231,992