Condensed Statement of Shareholders' Equity (Unaudited) Statement (USD $) In Thousands, unless otherwise specified	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, 2011	$ 206,657	$ 0	$ 166,969	$ 53,580	$ 1,412	$ (15,304)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,657			6,657
Other Comprehensive Income (Loss), Net of Tax	(2,722)				(2,722)
Repurchase of preferred shares and common stock warrant	(1,201)		(1,201)
Dividends, Common Stock, Cash	(1,172)			(1,172)
Reissuance of treasury stock for deferred compensation plan	137					137
Purchase of treasury stock	(34)					(34)
Stock Issued During Period, Value, Dividend Reinvestment Plan	89		89
Common shares issued under Board of Directors' compensation plan	29		(18)			47
Stock based compensation expense	226		226
Balance at end of period at Mar. 31, 2012	$ 208,666	$ 0	$ 166,065	$ 59,065	$ (1,310)	$ (15,154)