CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total
Balance at Dec. 31, 2011	$ 1	$ 215	$ 196,002	$ (103,563)	$ 187,367	$ (2,844)	$ 277,178
Balance (in Shares) at Dec. 31, 2011	65,000	16,527,000
Net income					1,739		1,739
Other comprehensive income, net of income taxes						719	719
Stock based compensation expense			46				46
Accretion of preferred stock			156		(156)		0
Stock options exercised (in Shares)							0
Cash dividends
Common stock					(826)		(826)
Preferred stock					(813)		(813)
Balance at Mar. 31, 2012	1	215	196,204	(103,563)	187,311	(2,125)	278,043
Balance (in Shares) at Mar. 31, 2012	65,000	16,527,000
Balance at Dec. 31, 2012	1	215	196,819	(103,563)	208,853	(2,684)	299,641
Balance (in Shares) at Dec. 31, 2012	65,000	16,527,000
Net income					5,253		5,253
Other comprehensive income, net of income taxes						1,319	1,319
Stock based compensation expense			27				27
Accretion of preferred stock			165		(165)		0
Stock options exercised			88				88
Stock options exercised (in Shares)		6,000					(6,406)
Cash dividends
Common stock					(826)		(826)
Preferred stock					(813)		(813)
Balance at Mar. 31, 2013	$ 1	$ 215	$ 197,099	$ (103,563)	$ 212,302	$ (1,365)	$ 304,689
Balance (in Shares) at Mar. 31, 2013	65,000	16,533,000