CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (USD $) In Thousands, except Share data, unless otherwise specified	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) (Net of Taxes) [Member]	Total Comprehensive Income [Member]	Series A Preferred Stock [Member]	Series A Preferred Stock [Member] Preferred Stock [Member]	Series B Preferred Stock [Member]	Series B Preferred Stock [Member] Preferred Stock [Member]	Series C Preferred Stock [Member]	Series C Preferred Stock [Member] Preferred Stock [Member]
Balance at Dec. 31, 2008	$ 75,375	$ 30,479	$ 44,708	$ 188			$ 0		$ 0		$ 0
Balance (shares) at Dec. 31, 2008		7,642,280					0		0		0
Comprehensive income:
Net income	2,588		2,588		2,588
Other comprehensive income, net of tax:
Net change in unrealized gain (loss) on available-for-sale investment securities	(1,643)			(1,643)	(1,643)
Total comprehensive income					945
Issuance of stock, shares		1,264,952					7,000		1,359
Issuance of stock, Value		6,441				6,775	6,775	1,317	1,317	6,441
Issuance of common stock warrants	225	225
Stock-based compensation expense	284	284
Stock options exercised and related tax benefit, shares		42,522
Stock options exercised and related tax benefit, value	182	182
Preferred stock dividends and accretion	(321)		(365)				44
Balance at Dec. 31, 2009	91,223	37,611	46,931	(1,455)			6,819		1,317		0
Balance (shares) at Dec. 31, 2009		8,949,754					7,000		1,359		0
Comprehensive income:
Net income	3,279		3,279		3,279
Other comprehensive income, net of tax:
Net change in unrealized gain (loss) on available-for-sale investment securities	2,422			2,422	2,422
Total comprehensive income					5,701
Conversion of preferred stock Series, B to common stock - non voting, shares		258,862							(1,359)
Conversion of preferred stock Series, B to common stock - non voting, values		1,317							(1,317)
Stock-based compensation expense	239	239
Stock options exercised and related tax benefit, shares		159,400
Stock options exercised and related tax benefit, value	578	578
Preferred stock dividends and accretion	(350)		(395)				45
Balance at Dec. 31, 2010	97,391	39,745	49,815	967			6,864		0		0
Balance (shares) at Dec. 31, 2010		9,368,016					7,000		0		0
Comprehensive income:
Net income	6,477		6,477		6,477
Other comprehensive income, net of tax:
Net change in unrealized gain (loss) on available-for-sale investment securities	3,157			3,157	3,157
Total comprehensive income					9,634
Issuance of stock, shares											7,000
Issuance of stock, Value	7,000										7,000
Stock-based compensation expense	196	196
Redemption of preferred stock Series A, shares							(7,000)
Redemption of preferred stock Series A, Value	(7,000)						(7,000)
Repurchase and retirement of common stock warrants	(185)	(185)
Stock options exercised and related tax benefit, shares		179,800
Stock options exercised and related tax benefit, value	796	796
Preferred stock dividends and accretion	(350)		(486)				136
Balance at Dec. 31, 2011	$ 107,482	$ 40,552	$ 55,806	$ 4,124			$ 0		$ 0		$ 7,000
Balance (shares) at Dec. 31, 2011		9,547,816					0		0		7,000