Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (USD $) In Thousands, except Share data	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Stock Subscription Receivable [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Balance at Dec. 31, 2009	$ 151,885	$ 128	$ 84,674	$ (3)	$ (267)	$ 67,353
Balance, Shares at Dec. 31, 2009		12,778,935
Issuance of common stock	172		172
Issuance of common stock, shares		21,398
Repurchase of common stock	(772)	(1)	(771)
Repurchase of common stock, shares		(80,925)
Exercise of stock options	162	1	161
Exercise of stock options, shares		35,864
Tax benefit on stock options exercised	72		72
Stock option compensation recognized	194		194
Payment of receivables	1			1
Restricted stock grant		1	(1)
Restricted stock grant, shares		109,393
Restricted stock compensation recognized	2,486		2,486
Net change related to derivatives, net of tax	138				138
Net change in unrealized gain/loss on securities available for sale, net of tax	(3)				(3)
Net income	5,668					5,668
Balance at Dec. 31, 2010	160,003	129	86,987	(2)	(132)	73,021
Balance, Shares at Dec. 31, 2010	12,864,665	12,864,665
Issuance of common stock	101	0	101
Issuance of common stock, shares		8,598
Repurchase of common stock	(5,578)	(5)	(5,573)
Repurchase of common stock, shares		(476,276)
Exercise of stock options	1,029	1	1,028
Exercise of stock options, shares		103,215
Stock option compensation recognized	72		72
Restricted stock grant	0	3	(3)
Restricted stock grant, shares		280,471
Restricted stock compensation recognized	2,547		2,547
Net change related to derivatives, net of tax	83				83
Net change in unrealized gain/loss on securities available for sale, net of tax	35				35
Net income	4,115					4,115
Balance at Sep. 30, 2011	$ 162,407	$ 128	$ 85,159	$ (2)	$ (14)	$ 77,136
Balance, Shares at Sep. 30, 2011	12,780,673	12,780,673