Condensed Statement of Shareholders' Equity Statement (USD $) In Thousands	Total	Preferred Stock [Member]	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Treasury Stock [Member]
Balance at beginning of period at Dec. 31, 2010	$ 230,681	$ 38,645	$ 166,298	$ 45,547	$ (4,453)	$ (15,356)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss) Attributable to Parent	8,711			8,711
Other Comprehensive Income (Loss), Net of Tax	8,437				8,437
Preferred Stock Dividends	(768)			(768)
Amortization of discount on preferred stock	0	230		(230)
Dividends, Common Stock, Cash	(2,118)			(2,118)
Reissuance of treasury stock for deferred compensation plan	176					176
Purchase of treasury stock	(90)					(90)
Stock Issued During Period, Value, Dividend Reinvestment Plan	240		240
Common shares issued under Board of Directors' compensation plan	75		75
Stock based compensation expense	186		186
Repurchase of preferred stock	(21,000)	(21,000)
Balance at end of period at Sep. 30, 2011	$ 224,530	$ 17,875	$ 166,799	$ 51,142	$ 3,984	$ (15,270)