Consolidated Statements of Shareholders' Equity (Unaudited) (USD $) In Thousands, except Share data	Preferred Stock	Preferred Stock Discount	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Beginning balance at Dec. 31, 2010	$ 65,000	$ (2,932)	$ 104,207	$ 183,413	$ (5,085)	$ 344,603
Beginning balance, shares at Dec. 31, 2010			16,801,000			16,801,000
Net income				12,658		12,658
Preferred stock redeemed	(65,000)					(65,000)
Preferred stock issued	63,500					63,500
Common stock issued under stock option plans			30
Common stock issued under stock option plans, shares			2,000
Common stock issued into dividend reinvestment plan			638
Common stock issued into dividend reinvestment plan, shares			53,000
Cash dividends declared ($0.24 per common share)				(4,045)		(4,045)
Preferred dividends				(2,440)		(2,440)
Accretion of preferred stock discount		2,932		(2,932)
Stock-based compensation			643			643
Stock-based compensation, shares			29,000
Other comprehensive income					1,226	1,226
Ending balance at Sep. 30, 2011	63,500		105,518	186,654	(3,859)	351,813
Ending balance, shares at Sep. 30, 2011			16,884,617			16,884,617
Beginning balance at Dec. 31, 2011	63,500		104,481	185,491	(8,682)	345,150
Beginning balance, shares at Dec. 31, 2011			16,909,820			16,909,820
Net income				2,531		2,531
Common stock issued under stock option plans, shares
Common stock issued into dividend reinvestment plan			335
Common stock issued into dividend reinvestment plan, shares			31,000
Cash dividends declared ($0.24 per common share)				(4,073)		(4,073)
Preferred dividends				(2,277)		(2,277)
Stock-based compensation			280
Stock-based compensation, shares			72,000
Other comprehensive income					846	846
Ending balance at Sep. 30, 2012	$ 63,500		$ 105,454	$ 181,672	$ (7,836)	$ 342,790
Ending balance, shares at Sep. 30, 2012			17,013,008			17,013,008