Consolidated Statements Of Changes In Shareholders' Equity (USD $) In Thousands, unless otherwise specified	Capital Stock [Member]	Preferred Stock [Member]	Surplus [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Total
Balance at Dec. 31, 2008	$ 7,287		$ 4,903	$ 67,908	$ (524)	$ (14,129)	$ 65,445
Net income				10,350			10,350
Cumulative effect adjustment for the Adoption of FSP FAS 115-2				937	(937)
Total other comprehensive income					2,034		2,034
Dividend declared:
Common stock				(2,994)			(2,994)
Preferred stock				(790)			(790)
Issuance of common stock	1,600		18,812				20,412
Issuance of preferred stock		18,114	(232)				17,882
Issuance of stock warrants			638				638
Purchase of treasury stock						(144)	(144)
Stock options exercised, including related tax effects			110	(166)		608	552
Recognition of stock based compensation expense			129				129
Cumulative dividends on preferred stock		122		(122)
Accretion of discount		122		(122)
Balance at Dec. 31, 2009	8,887	18,358	24,360	75,001	573	(13,665)	113,514
Net income				10,662			10,662
Total other comprehensive income					(289)		(289)
Dividend declared:
Common stock				(3,955)			(3,955)
Preferred stock				(138)			(138)
Issuance of common stock	164		1,777				1,941
Purchase of preferred stock and warrants (18,751 shares)		(18,873)	(279)				(19,152)
Purchase of treasury stock						(275)	(275)
Stock options exercised, including related tax effects			161	(670)		1,592	1,083
Recognition of stock based compensation expense			217				217
Restricted stock grants			(71)	(6)		77
Accretion of discount		515		(515)
Balance at Dec. 31, 2010	9,051		26,165	80,379	284	(12,271)	103,608
Net income				11,043			11,043
Total other comprehensive income					6,740		6,740
Dividend declared:
Common stock				(4,228)			(4,228)
Purchase of treasury stock						(623)	(623)
Stock options exercised, including related tax effects			248	(996)		2,359	1,611
Recognition of stock based compensation expense			99				99
Balance at Dec. 31, 2011	$ 9,051		$ 26,512	$ 86,198	$ 7,024	$ (10,535)	$ 118,250