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						6,730
Surrender of shares issued under stock incentive plan					(75)
Other comprehensive income, net of tax				2,705			2,705
Net income			9,475				9,475
Cash dividends paid - common shares			(5,564)
Stock option compensation and restricted stock expense		189
Balance at Jun. 30, 2012	35,225	271,058	19,434	(11,511)	(86,655)	227,551
Balance at Dec. 31, 2012	35,264	271,565	24,407	(16,491)	(86,655)	228,090	228,090
Net changes during the period						5,390
Surrender of shares issued under stock incentive plan					(18)
Other comprehensive income, net of tax				1,037			1,037
Net income			9,768				9,768
Cash dividends paid - common shares			(5,569)
Stock option compensation and restricted stock expense		172
Balance at Jun. 30, 2013	$ 35,264	$ 271,737	$ 28,606	$ (15,454)	$ (86,673)	$ 233,480	$ 233,480