Consolidated Statement of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Comprehensive Income	Retained Earnings	Accumulated Other Comprehensive Income
Beginning balance at Dec. 31, 2008	$ 103,350	$ 24,151	$ 1,114	$ 9,650	$ 0	$ 67,807	$ 628
Net income	9,140				9,140	9,140
Other comprehensive income, net of tax:
Unrealized gain (loss) on securities	4,260				4,260		4,260
Unrealized gain (losses) on derivative instruments	831				831		831
Comprehensive income					14,231
Amortization of unearned compensation	164			164
Issuance of restricted shares	96		3	93
Exercise of stock options	68		2	66
Tax benefit related to stock options	18			18
Stock option expense	39			39
Cash dividends on preferred stock (5.00%)	(1,132)					(1,132)
Cash dividends on common stock ($.45 and $.47 per share)	(2,229)					(2,229)
Accretion of discount on preferred stock		152				(152)
Ending balance at Dec. 31, 2009	114,605	24,306	1,119	10,030	0	73,431	5,719
Net income	10,455				10,455	10,455
Redemption of preferred stock	(6,250)	(6,250)
Other comprehensive income, net of tax:
Unrealized gain (loss) on securities	(2,199)				(2,199)		(2,199)
Unrealized gain (losses) on derivative instruments	(1,172)				(1,172)		(1,172)
Comprehensive income					7,084
Amortization of unearned compensation	68			68
Issuance of restricted shares	34			34
Exercise of stock options	120		3	117
Tax benefit related to stock options	77			77
Stock option expense	30			30
Cash dividends on preferred stock (5.00%)	(1,245)					(1,245)
Cash dividends on common stock ($.45 and $.47 per share)	(2,240)					(2,240)
Accretion of discount on preferred stock		161				(161)
Ending balance at Dec. 31, 2010	112,283	18,217	1,122	10,356	0	80,240	2,348
Net income	12,797				12,797	12,797
Redemption of preferred stock	(18,750)	(18,750)
Other comprehensive income, net of tax:
Unrealized gain (loss) on securities	7,793				7,793		7,793
Unrealized gain (losses) on derivative instruments	(2,299)				(2,299)		(2,299)
Comprehensive income					18,291
Amortization of unearned compensation	100			100
Issuance of preferred stock	12,500	12,500
Issuance of restricted shares	60		3	57
Exercise of stock options	55		1	54
Tax benefit related to stock options	8			8
Stock option expense	35			35
Cash dividends on preferred stock (5.00%)	(792)					(792)
Cash dividends on common stock ($.45 and $.47 per share)	(2,325)					(2,325)
Accretion of discount on preferred stock		533				(533)
Ending balance at Dec. 31, 2011	$ 121,465	$ 12,500	$ 1,126	$ 10,610	$ 0	$ 89,387	$ 7,842